Tcu40 80

User Manual: tcu40-80

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W959-000-01
Revision F
October, 96

Instruction Manual

TCU 40/80

Single Channel
Temperature Control Unit

View our inventory

EDWARDS
Edwards High Vacuum International
One Edwards Park 301 Ballardvale Street Wilmington, MA 01887
Telephone: (508) 658-5410 Telex: 710-347-7672 Fax: (508)658-7969

Declaration of Conformity
We,

Edwards High Vacuum International,
One Edwards Park
301 Ballardvale St.

Wilmington, MA 01887
declare under our sole responsibility that the product(s)
TCU 40/80 Temperature Control Unit
W95000000

to which this declaration relates is in confonnity with the following standard(s)
or other normative document(s)
BSIEC1010-1

Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use.

BS EN50O81-1

Electromagnetic Compatibility, General Emission Standard.

BSEN50082-1

Generic Standard Class: Domestic, Commercial & Light Industry.
Electromagnetic Compatibility, General Immunity Standard.
Generic Standard Class: Domestic, Commercial & Light Industry

following the provisions of

89/392/EEC

Machinery Safety Directive

89/336/EEC

Electromagnetic Compatibility Directive

73/023/EEC

Low Voltage Directive

Dr. A. P. Troup, Director of Technology

0
Date and Place

This product has been manufactured under a quality system registered to ISO900I

EDWARDS

CONTENTS
Section

Title

PREFACE

1.1
2

Safety considerations
TCU 40/80

Page
1

1
3

2.1

Scope of the manual

2.2

Description of the TCU 40/80

2.3

Lockout procedure

2.4

Safety features

QUICK START PROCEDURE

3.1

Power up

3.2

Sctpoint verification

PRODUCT DESCRIPTION

4.1

Refrigeration and coolant circuits

4.2

Refrigeration

4.2.1

If cooling is required:

4.2.2

If cooling is not required:

9
10

4.3

Coolant circuit

4.4
4.5

Temperature monitoring
Front panel

10
1 ]

4.6

Rear panel

4.7
4.8

Specifications
Dimensions

14
15

INSTALLATION

5.1

Receiving and unpacking

5.2

Location

5.2.1

5.2.2
5.2.3
5.3
5.3.1
5.4

16
16

Securing the unit

Installing the secondary containment receptacle

Floor levclers
Stacking
Tie-bolts
Facilities

16
17
17
17

5.4.1

Water and coolant connections

5.4.2

Water

5.4.3
5.4.4

Coolant
Remote connections

19
19

6
6.1

OPERATION
Preparation

20
20

6.2
6.3
6.4
6.5

Powering up the TCU 40/80
Changing the setpoint value (SV1)
Temperature controller Pid settings
Remote set-point

20
21
21
22

6.6

Flow rate adjustment

/?^v

TCU 40/80 Temperature Control Unit

MAINTENANCE

7.1
7.2

Hazard warnings
Hazards

23
25

7.3

Filling the reservoir

7.4

Draining/bleeding the coolant reservoir

7.5

Temperature probe calibration

7.6

Preventive maintenance schedule

7.7
7.7.1

Semi-annual preventative maintenance
Required equipment

28
28

7.7.2

Preparation

7.7.3

Verify system status

7.7.4

Refrigeration leak check

7.7.5

Fluorinert leak check

7.7.6

Water leak check

7.7.7

Insulation repair

7.7.8

Lamp check/replacement

7.8

Annual preventative maintenance

7.8.1

Required equipment

7.8.2

Required supplies

7.8.3

Solenoid valve coil replacement

7.8.4

System check

7.9

Preventive maintenance checklist

TROUBLESHOOTING

ACCESSORIES AND SPARE PARTS

APPENDIX
Return of Edwards Equipment - Procedure

Return of Edwards Equipment- Declaration

54
(Form HS1)

(FormHS2)

Legal notices, limitations and disclaimers

MSDS (material safety data sheet)- "SUVA" HP62

'-""5\

TCU 40/80 Temperature Control Unit

ILLUSTRATIONS

Figure

Title

Figure 1- Refrigeration and coolant components

Page
6

Figure 2 - Refrigeration and coolant components

Figure 3- Refrigeration and coolant circuits

Figure 4 - Front panel

Figure 5 - Electrical rear panel

Figure 6 - TCU dimensions

Figure 7- Stacked TCU 40/80 systems

Figure 8-System rear view

Figure 9 Water connections
Figure 10 - Temperature controller

J9
21

Figure 11 - Lamp replacement

Figure 12 - Solenoid coil replacement

Figure 13 -Electrical drawer
Figure 14-Electrical drawer schematic

51
54

Figure 15 - Remote interface

Table

Title

Table 1 - Safety features
Table2 -Frontpanel Indicators

Page
4
5

Table 3 - Refrigeration and coolant components
Table 4 - Front panel controls

8
11

Table
Table
Table
Table
Table
Table
Table

5 - Front panel LED indicators
6 - Temperature controller

12
12

7 - Description of rear panel components and indicators
8 - Front panel power up indicator conditions
9 - Electrical hazards classifications
10 - Preventive maintenance schedule
11- Faults identified by front panel lamps

13
20
25
27
42

Table 12 - Faults indicated by the front panel LED indicators

Table 13 -Faults identified by rear panel indicators
Table 14 - Miscellaneous fault conditions

48
49

Table 15 -Accessories

Table 16 Spare parts

TCU 40/80 Temperature Control Unit

TRANSLATIONS
The TCU 40/80 Instruction Manual is available in the following translations:
Language

Edwards part number

English

W95900001

French

W95900004

German

W95900005

Italian

W95900006

Japanese

W95900007

For each TCU 40/80 purchased, you are entitled to one translated manual free of charge. This is

in addition to the English version provided. Fax this completed form to the nearest Edwards
location to receive your complimentary translation.

Name:
Title:
Company:
Address:

TCU serial number:
Language: (circle one)
French
German

Italian
Japanese

TCU 40/80 Temperature Control Unit

PREFACE

1.1

Safety considerations
Many safety features have been designed into the TCU 40/80 to protect the operator and the
equipment.

The following symbols are used in this manual to indicate the various safety conditions.

General Alert

General Alert symbol denotes the potential of personal hazards
or equipment failure.
Warnings are given when failure to observe the instruction
could result in injury or death to persons.
Cautions are given where failure to observe the instruction

could result in damage to the equipment, associated equipment
and process.

Statement on avoiding the hazard.

Electric Shock

Electric Shock symbol denotes the presence of high voltage or
current. It calls attention to the procedure, practice, or the like,
which if not done correctly or adhered to could result in injury
or death.
Statement on avoiding the hazard.

Eye Protection

Eye Protection symbol denotes a hazard which could cause

injury or irritation to the eyes.
Statement on avoiding the hazard.

Toxic Gases

Toxic Gases symbol denotes a personal hazard.

It calls attention to the procedure, practice, or the like, which if

not done correctly or adhered to could result in injury or death.
Statement on avoiding the hazard.

TCU 40/80 Temperature Control Unit

Hot Surfaces

Hot Surfaces symbol denotes a hazard which could cause injury
or burns.

Statement on avoiding the hazard.

Hand Protection

Hand Protection symbol denotes a hazard which could cause
injury or burns
Statement on avoiding the hazard.

High Pressure

High Pressure symbol denotes a personal hazard or equipment

failure. It calls attention to the procedure, practice, or the like,
which if not done correctly or adhered to could result in
equipment damage, injury or death.

Statement on avoiding the hazard.

Extreme Temperature

Extreme Temperature symbol denotes a hazard which could

cause injury or burns.

Statement on avoiding the hazard.

TCU 40/80 Temperature Control Unit

TCU 40/80

2.1

Scope of the manual
This manual provides information on the installation, start-up and operation of Edwards High Vacuum
Model 40/80 Temperature Control Unit (TCU 40/80).
The Quick Start Procedure on page 5 is a step by step guide for the start up and use of an installed,

working system.
Installation, starting on page 16, provides instructions and information for installing the system. The
installer must have sufficient technical understanding of electrical and mechanical systems to properly use

this information.
Operation, starting on page 20, provides more complete instructions on the preparation and use of the
system.

2.2

Description of the TCU 40/80
The TCU 40/80 is a single-channel temperature control unit engineered for temperature control of remote
heat loads.
From distances up to SO feet, the TCU 40/80 can cool the heat load generated by the process equipment.

The coolant circulates through the TCU 40/80, where it is cooled or heated as required, then is transferred
to the process equipment, and returns in a closed loop. The TCU 40/80 maintains supply coolant at a
temperature between -40 °C and +80 °C, selectable in 0.1 °C increments, with a tolerance of ±1.0 °C.

2.3

Lockout procedure
To prevent accidental or unauthorized starting of the TCU 40/80 during maintenance, disconnect the

power cord from the receptacle and install an appropriate lock-out device (Hubbell Small Plugout™ or
equivalent) on the end of the power cord.

TCU 40/80 Temperature Control Unit

2.4

Safety features
The safety features listed in Table 1 are designed into the TCU 40/80.
Table I - Safety features
Component

Ref. des.*

EMERGENCY OFF

(PB1)

Function
Shuts off power to major system components.

button (EMO)

Remote EMERGENCY

(J72J2)

Remote shut off of power to major system components.

OFF

Drawer safety switch

(LSD

Upon opening the drawer, shuts off power to major system
components.

Pressure switch

(PS1)

Protects the refrigeration system against high discharge
pressure. Interrupts operation at 300 psig.

Condenser pressure relief

(W2)

Vents refrigerant to the atmosphere above 350 psig. Fail
safe for PS1, works even if there is no power applied to the

valve

system.

Reservoir pressure relief

(Wl)

Protects the reservoir from over-pressure.

Temperature switch

(TS1)

Protects the process fluid from exceeding 99 °C

Coolant flow switch

(FS1)

Protects the process equipment from inadequate coolant

valve

flow rates.
Coolant float switch

(LLS1)

Protects against low level in the coolant reservoir by
stopping the equipment.

Coolant float switch

(LLS3)

Protects against overfill of the coolant reservoir. Indication
on front and rear panels.

Thermal overload

(K3)

Surge suppression

VR1-4

Protects the pump motor from excess current.
Protects the TCU 40/80 against voltage surges and power
line transients.

Line phase monitor

PMR1

Protects the equipment against incorrect wiring of the
supply phases and low voltage burn-out.

Current sensor

Secondary containment

CSR1

Protects the compressor against abnormal conditions.

Captures fluids (internal to the TCU) in the event of a leak.

• See Figure 3 on page 9.

TCU 40/80 Temperature Control Unit

QUICK START

Table 2 - Front panel Indicators

PROCEDURE

Indicator

Reset

Start

Condition

POWER ON

Green

RESET

White

FACILITY POWER

Green

FACILITY WATER

Green

CIRCUIT

Green

Off

Green

Off

Green

OfT

Off

Green

(if used)

This Quick Start procedure is for easy start
up and operation of an installed and fully

working TCU 40/80. If your TCU 40/80 is
not installed, go to Installation on page 16.
Detailed operating instructions are in
Operation on page 20.

If at any time an alarm occurs, press STOP
and correct the fault indicated by the display

as directed in the Troubleshooting Guide
on page 42. Press RESET and START to
continue operation.

3.1

Power up
Before applying power, verify that all water

BREAKERS
COMPRESSOR

TEMPERATURE

and coolant lines are connected to the
system. The handles on both coolant line

FLOW

valves should be in the open position. For

the location of these connections, refer to

NORMAL LEVEL

Figure 8 on page 18.
To power up the TCU 40/80:

READY light should be on. If the
ready light is not on see Powering Up

the TCU 40/80 on page 20.
2.

LOW LEVEL
REMOTE RTD
(optional)

Press RESET. Verify that front panel

indicators are as shown in the Reset
column of Table 2 on this page.

Press START. Verify that front panel
indicators are as shown in the Start

Condition column of Table 2 on this
page.

If in steps two or three any front panel
indicators do not match Table 2, refer to the

3.2

Setpoint verification
Verify that the manual mode setpoint value

(SV1) displayed on the temperature control
is the value desired. To change the Setpoint
value see Changing the Setpoint Value
(SVl)onpage21.

Troubleshooting Guide on page 42 for

Do not to exceed the normal operating

corrective action.

parameters. The system is designed to

operate from -40 °C to +80 °C.

Verify that the coolant pressure gauge

(located on the front access panel)
reads less than 100 psig.

TCU 40/80 Temperature Control Unit

PRODUCT DESCRIPTION

4.1

Refrigeration and coolant circuits
Figure 1, Figure 2, and Table 3 on page 8 describe the refrigeration and coolant components of the TCU
40/80.

Figure 1- Refrigeration and coolant components

TCU40/80 Temperature Control Unit

Figure 2 - Refrigeration and coolant components

TCU 40/80 Temperature Control Unit

/^\

Table 3 - Refrigeration and coolant components
Item

Component name

Function

Reservoir

A holding tank for the Fluorinert coolant.

Level switch

Monitors the coolant level in the reservoir.

Compressor

Compresses the refrigerant fluid.

Crankcase regulator

Protects the compressor against pressure overload.

Suction service valve

Allows isolation at the compressor.

Discharge service valve

Allows isolation at the compressor.

Temperature switch

High limit switch for reservoir heater.

Pressure switch

Limits maximum allowable discharge pressure.

Condenser

Transfers heat from the compressed refrigerant to the facility water.

Filter dryer

Removes contaminants and moisture from the refrigerant.

Safety cooling valve

Limits the discharge temperature.

Motor

Drives the coolant pump.

Pump

Circulates the Fluorinert coolant.

Bypass valve

Regulates coolant flow.

Hot gas bypass valve

Regulates cooling capacity.

Subcooler

Further cools the refrigerant that is returning to the compressor.

Solenoid valve SV2

Allows refrigerant to pass through the hot gas bypass valve, then to

the compressor suction line when energized.
18

Solenoid valve SV1

Allows refrigerant to pass to the TEV when energized.

Sight glass

Allows visual inspection of the refrigerant charge and presence of
moisture in the system.

TEV (Thermostatic

Allows the refrigerant to expand from a liquid to a gas.

expansion valve)

Heater

Raises the temperature of the coolant when the process requires
heating.

Flow switch

Monitors the flow rate.

Heat exchanger

Extracts heat from the coolant and transfers it to the refrigerant.

Pressure relief valve

Discharges refrigerant from the system to the atmosphere in the
event of severe over-pressure condition.

TCU 40/80 Temperature Control Unit

Bypass vaSn

Profisure
Gwlttfc

Oran valve

RID
temperature

probe

Figure 3- Refrigeration and coolant circuits

4.2

Refrigeration
(see figure 3 above)

Refrigerant gas enters the compressor at low temperature and pressure. It leaves the compressor at
high pressure and temperature.

The gas passes into the condenser, where heat is removed by the external water supply, causing the
gas to condense into a liquid.

The cool liquid refrigerant exits the condenser and passes through a filter dryer that removes any
residual moisture or contaminants.

4.2.1

If cooling is required:
1.

Solenoid valve SV1 opens (coil energized), allowing the refrigerant to flow into the Thermostatic
Expansion Valve (TEV). The pressure drop across the TEV causes the refrigerant to change from a
liquid to a mixture of liquid and gas.

The liquid and gas mixture enters the heat exchanger where it becomes entirely a gas. The process of
expansion from a liquid to a gas reduces the temperature by absorbing energy.

The refrigerant leaving the heat exchanger returns to the compressor through the subcooler and a
crankcase pressure regulator. The subcoolcr further cools the refrigerant entering the TEV.

TCU 40/80 Temperature Control Unit

4.2.2

If cooling is not required:
1.

Solenoid valve SVl closes (coil de-energized).

Hot refrigerant from the compressor is passed through SV2 (coil energized) and a hot gas bypass

valve before returning to the compressor suction line. This bypassing allows the compressor to run
continuously.

Cooling, required to prevent the compressor from overheating, is provided by allowing some of the

liquid from the condenser to pass through the safety cooling automatic expansion valve into the
suction line, thus maintaining the discharge gas temperature below 99 °C.

4.3

Coolant circuit
Coolant is pulled from the reservoir by the circulation pump and transferred to the heat exchanger where
it is cooled by the refrigeration system as required. It then flows to the process equipment by means of the
coolant supply hose.
The coolant returns to the TCU 40/80 reservoir by means of the coolant return hose.

The coolant system requires 8 liters of coolant for the reservoir, plus the volume of the circulation lines
and any other spaces filled with coolant that are attached to the TCU 40/80.

To increase the coolant temperature, the reservoir uses an electrical resistance heater that is controlled by
the temperature controller. The heater must be fully submerged at all times, and if the coolant in the
reservoir falls below 3.S liters, a level switch causes the status alarm signal to automatically shut down the
TCU 40/80.
A three-float level switch, a thermostat, and a flow sensor provide coolant status signals to the TCU 40/80
control system.

4.4

Temperature monitoring
A Resistance Temperature Device (RTD) monitors the temperature of the coolant leaving the TCU 40/80

and transmits this information to the temperature controller. The TCU 40/80 compares the output of the
RTD to the selected process temperature (SVl) and determines if the coolant needs to be cooled or heated.
The temperature controller then operates the main cooling solenoid valve or heater.
The coolant temperature at the supply port on the rear panel is measured by a local, internally connected
RTD. If sensing of process equipment temperature is needed, connect an RTD to J72J3 at the rear panel

(see Figure 5 on page 13). For remote connection schematic details, see Figure IS on page 56.

^WIITV

TCU 40/80 Temperature Control Unit

4.5

Front panel
Figure 4 shows the Front Panel. Table 4, Table 5 and Table 6 identify its controls and indicators.

> mat mu

|M O <
? 5

aw-"

Figure 4 - Front panel
Table 4 - Front panel controls
Description

Control name

POWER ON

Lights green when power is being supplied to the TCU 40/80.

RESET

Resets alarms and makes the TCU 40/80 ready to operate. The white light
indicates that the TCU 40/80 is ready to operate.

EMERGENCY OFF

Removes power from all TCU 40/80 circuits except the EMERGENCY
OFF circuit. To shut off power, push EMERGENCY OFF (EMO). To reset,
rotate the EMERGENCY OFF button clockwise as shown on the switch.

START/STOP
ALARM

Starts and stops the operation of the TCU 40/80.
Emits a high pitched sound when there is a fault condition which has caused
the TCU 40/80 to stop operation.

MUTE

Silences the audible alarm.

TCU 40/80 Temperature Control Unit

Table 5 - Front panel LED indicators
LED name
FACILITY POWER

Condition

Description

Green

Power phases are normal.

Red

FACILITY WATER

Power phases are reversed or low line voltage.

Green

Water pressure and flow are normal.

Red

Water pressure or flow are not adequate. (See
Specifications on page 14.

CIRCUIT BREAKERS

COMPRESSOR

COOLANT
TEMPERATURE
COOLANT FLOW

Green

Rear panel circuit breakers 2, 3, and 4 are on.

Red

One or more of these breakers is tripped or off.

Green

Compressor is operating normally.

Red

Compressor has stopped operating.

Green

Coolant reservoir temperature is normal.

Red

Coolant temperature is above the operating range.

Green

Coolant flow is normal.

Coolant flow is not adequate.

Red
COOLANT NORMAL
LEVEL

COOLANT LOW LEVEL

Green

Coolant level is normal.

Amber

Coolant level is over filled.

Off

Coolant level is normal

Amber

REMOTE RTD

Coolant level is low.

Red

Coolant level is very low.

Off

Remote RTD not connected.

Remote RTD temperature probe is in use.

Green

Table 6 - Temperature controller
Description

Controls and indicators

Process Value (PV)

The present temperature of the coolant, as indicated by the internal RTD
or the remote RTD.

Setpoint Value (SP)

The TCU 40/80 regulates to this temperature, as set by the operator.

Pushbuttons

Used to program the controller.

Remote Mode LED (Aux)

Indicates mode of operation:
Off indicates local operation.
On indicates remote operation.

TCU 40/80 Temperature Control Unit

4.6

Rear panel
Figure 5 shows the rear panel. Table 7 identifies the controls and indicators on the rear panel.

cocuurr iml

t90/t0* VAC » *M
•0/W Hi *0A

Figure 5 - Electrical rear panel

Table 7 ■■ Description of rear panel components and indicators
Label
J72J3

Description

Five pin connector for remote RTD interface. See Figure 15 on page 56 for
pinouts.

CB7 24 VAC

1 -pole, 2 Amp circuit breaker. Isolates the 24 VAC transformer. Normally on
(in).

CB8 24 VDC

l-pole, 2 Amp circuit breaker. Isolates the 24 VDC power supply output.
Normally on (in).

J72J2

Nine pin connector for remote EMERGENCY OFF, start-stop operation, and
remote setpoint operation enable. See Figure 15 on page 56 for pinouts.

CB4 reservoir heater

3-pole, 10 Amp circuit breaker. Normally on (up).

CB3 circulation pump

3-pole, 6 Amp circuit breaker. Normally on (up).

CB2 compressor

3-pole, 16 Amp circuit breaker. Normally on (up).

CB1 main power

3-pole, 25 Amp circuit breaker. Normally on (up).

normal/overfill

Normal, LED Green
Overfilled, LED Amber

low/fault

Low, LED Amber
Fault, LED Red

200/208 VAC 3 PH

Mains input power connector.

50/60 Hz 30A
CB5-XFMR
CB6-PSU
J72J1

2-pole, 0.5 Amp circuit breaker. Isolates the equipment transformer.
2-poIe, 0.3 Amp circuit breaker. Isolates the power supply.

37 pin D-subminiature connector, for setpoint value signal, process value
signal, and remote fail and warning signals.

See Figure 15 on page 56 for pinouts.

TCU 40/80 Temperature Control Unit

4.7

Specifications
Parameter

Conditions

Temperature ramp

Coolant short circuit conditions

Cooling capacity @

Specification

+25°Cto+80°C

Elapsed time: <25 minutes

+25°Cto-30°C

Elapsed time: <20 minutes

Process coolant @ -40 °C

350 watts

Process coolant @-20 °C to +80 "C,

2000 watts

process equipment
ISO watt coolant line
losses; coolant water @

15 °C

2800 watts

Heating element
System flow

@20 °C, 60 psig

Process temperature

3 gpm (11.36 lpm)
-40°Cto+80°C

range

Setpoint resolution

±0.1 °C

Temperature regulation

± 1.0 °C typical

Facility water
requirements
Power requirements

+10oC(-0°+2°)to

3 to 6 gpm

+26 "C (+0° -2°)

(11.36 to 22.71 lpm)

3-phase delta (balanced load), 4 wire

30 amp outlet

(3 phases & earth gnd), 200 to 208
VAC, 50/60 Hz

+ 10°Cto+50°C

Ambient operating
temperature

Weight

450 pounds (204 kg)

Dimensions

22" wide x 30" deep x 35" high
(56 cm x 76 cm x 89 cm)
Up to 2000 meters

Altitude

(6562 ft.)

Up to 31 "C

80%

Above31°C

Derate linearly to 50% @ 50 °C,

Transient overvoltage

IEC 664, Installation Category II

2.5 kV

Pollution Degree

IEC 664

211

Sound pressure level

At a distance of 1 meter.

65dB(A)

Max. relative humidity

TCU 40/80 Temperature Control Unit

4.8

Dimensions

TCU 40/80

inches

(millimeters)

Figure 6 - TCU dimensions

TCU 40/80 Temperature Control Unit

INSTALLATION

5.1

Receiving and unpacking
Do a complete visual inspection of the TCU 40/80 for any damage. Do not use the TCU 40/80 if physical

damage is evident. If there is any damage, notify your supplier and the carrier in writing within three
days; state the item number of the TCU 40/80 together with your order number and supplier's invoice
number. Retain all packing materials for inspection.

Caution

When using a forklift to move or position the TCU
40/80, do not install the secondary containment
receptacle until the TCU 40/80 is in position.

Failure to follow these instructions may lead to
damage of the secondary containment receptacle
caused by the forks of the forklift.

5.2

Location
Allow a space 46" wide x 54" deep for the TCU 40/80 cable and coolant connections. The TCU 40/80
should have at least two feet of clearance at the rear and one foot along the sides of the unit. Be sure that
the mounting surface can safely support the weight of the TCU 40/80 (450 pounds evenly distributed).
The center of gravity is approximately the center of the refrigeration compartment.
When using a fork-lift to move the TCU 40/80, position the forks from the side of the unit.
The TCU 40/80 weighs 450 pounds (204 kg).
Failure to take proper care in moving or lifting
these units can result in serious bodily injury.

A 3 foot (1m) service length of the power cable is required to fully open the electrical drawer. Therefore,
do not install the TCU 40/80 further than 7 feet (2.1 m) from the power source.

5.2.1

Securing the unit
The four lockable casters of the TCU 40/80 swivel to provide maximum maneuverability. Make sure that
all four casters are turned inward and locked in position once Ihe TCU 40/80 is situated.

5.2.2

Installing the secondary containment receptacle
The secondary containment receptacle slides into the base from the rear of the unit.

5.2.3

Floor levelers
An optional floor leveler kit is available to compensate for uneven surfaces. See Table 15 on page 52 for
ordering information.

TCU 40/80 Temperature Control Unit

5.3

Stacking
The TCU 40/80 may be stacked two high. Be sure that the mounting surface can safely support the weight

of the two units (900 pounds, 408 kg).

Be sure that the casters of the top unit are turned inwards, but are not locked, until the top unit is fully
seated.

5.3.1

Tie-bolts
An optional tie-bolt kit is available for attaching stacked units. See Table 15 on page 52 for ordering
information.

TCU 40/80

inches

(millimeters)
Figure 7- Stacked TCU 40/80 systems

5.4

Facilities
The TCU 40/80 requires a water supply flow rate between 3 to 6 gallons per minute at a maximum
pressure of 100 psig, and an inlet temperature range of 10 °C to 26 °C

Power input is by a fused, suitable isolating electrical outlet, 208 VAC, 50/60 Hz, 30 amp, 3-phase delta
(balanced load), 3-wire and earth.

The required receptacle type is Hubbell P/N L21-30R2810-A, or equivalent.

TCU 40/80 Temperature Control Unit

5.4.1

Water and coolant connections
Figure 8 shows a rear view of the TCU 40/80 with its water and coolant connections.

inches
(millimeters)
Figure 8- System rear view

TCU 40/80 Temperature Control Unit

5.4.2

Water
Connections to the water supply and return are made to either Vi" brass barb fittings or Vi" compression
fittings.

For bare hose connections ("A" nominal I.D.):
1.

Slip the hose over the barb fitting and tighten the hose clamp.

Turn on the water supply and check for leaks.

For connections using hose with tube adapters or tubing ('/i" nominal O.D.):
1.

Remove the adapter coupled to the hose barb.

2.
3.

Tighten the compression nut, turn on the water supply, and check for leaks.

Insert the tube adapter or tubing with the appropriate ferrule and compression nut.

Rear Acctii Pantl

F»rrulo

• 1/2' Compr.jslon Nut

• 1/2" O.O. Tubing or
Hose Tuba Adaptor

Supplied Adaptor
With Hoie Barb

/JWN

♦NOT INCLUDED

Figure 9 Water connections

5.4.3

Coolant
Note: Ifthis TCU 40/80 is being installed on process equipment that has been used mth a coolant other
than Fluorinert. contact process equipment supplierfor retrofit instructions.

Connections to the coolant supply and return are made on the rear panel (see Figure 8 on page 18). The
maximum distance between the process equipment and the TCU 40/80 is 50 feet (100 feet total hose
length).

1. Attach the hoses to the supply and return compression fittings. Follow the hose manufacturers
recommendations for appropriate adapters.

5.4.4

Insulate the hoses with closed cell insulation in order to minimize heat loss.

Tape and glue the insulated joints to avoid condensation and icing.

Remote connections

Wiring details for remote connections are shown in Figure 15 on page 56. Remote connections should not
be run near or parallel to a.c. power lines or in the vicinity of equipment that generates large electric
fields.

TCU 40/80 Temperature Control Unit

OPERATION

6.1

Preparation
Verify that water and coolant connections are made at both ends, that the drain valve is closed and the
coolant supply and return valves are open. Connect the remote interfaces if required.

To use an external RTD probe, attach it to connector J72J3. Refer to Figure 15 on page 56. Verify
that the plug J72J2 is installed.

Press the EMERGENCY OFF button on the front panel.

Plug the TCU 40/80 power cord into a fused, switchable, 30 amp, 3-phase, 208 VAC outlet.

Ensure that all circuit breakers on the rear panel are in the ON position. CB7 and CB8 are nonswitchable circuit breakers and will trip when there is a problem. They cannot be turned on or off, but
they are re-settablc.

6.2

Powering up the TCU 40/80
1.

Verify that the POWER ON lamp on the front panel is illuminated.

Release the EMERGENCY OFF button.

If the Facility Power LED illuminates, the line

voltage is low, or the phase of the main power
supply is reversed.

Adjust the line voltage, if it is low.
Correct the phases by swapping two phases in the
electrical outlet.

Press the RESET button and verify the front panel indicators are as in the Reset Condition column of
Table 8.

Table 8 - Front panel power up indicator conditions
Reset condition

Start condition

Green

Off

White

FACILITY POWER

Green

FACILITY WATER

Green

CIRCUIT BREAKERS

Green

Off

Green

FLOW

Off

Green

NORMAL LEVEL

Off

Green

LOW LEVEL

Red

Off

Green

Indicator

POWER ON
RESET

COMPRESSOR
TEMPERATURE

REMOTE RTD (if used)

TCU 40/80 Temperature Control Unit

Press MUTE to silence the alarm.

The TCU 40/80 is shipped without coolant. The coolant level alarm will sound and the front panel
Reservoir Coolant Low Level LED will be red indicating that the reservoir must be filled.
5.

Fill the coolant reservoir using the procedure Filling the Reservoir on page 26.

Press the START button and verify the front panel indicators are as in the Start Condition column of
Table 8.

Use a halogen leak detector to check all supply and return line connections at both the TCU and
process equipment, around the pump head assembly, drain valve, heater, flow switch, vent line, fill
line, and reservoir pressure relief valve.

6.3

Changing the setpoint value (SV1)
The following instructions are for local temperature control only.
Do not exceed the temperature range of-40 °C to +80

This is the normal operating range of the TCU 40/80.
To change the temperature settings press page up or page down to cither increase or decrease the
temperature. The red display "PV" indicates the process value. The green display "SP" indicates the
current setpoint.

Note: The temperature controller has been programmed to prevent the setpointfrom exceeding the
normal operating range of the TCU 40/80. The controller is also protectedfrom unauthorized changes to

the Pid and other settings, Contact the process equipment supplierfor access to these settings and other
information.

'P EDWARDS
0UT1O
OUT tO

: mb

OUH.

F -j -71 -■

HUBI

Figure 10 - Temperature controller

6.4

Temperature controller Pid settings
Edwards default settings are:

PID1 - heating

value

PID2 - cooling

parameter

Pbl

8.0

Pb2

12.5

proportional band

Arl

0.43

Ar2

0.7

automatic reset

rAtl

7.0

rAt2

9.0

rate

dbl

1.0

db2

1.0

deadband

TCU 40/80 Temperature Control Unit

6.5

Remote set-point
To use the remote set-point, wire the J72J2 mating connector as illustrated on page 56.
24vac must be applied to pins 3 and 4.

The AUX LED on the temperature controller will illuminate indicating remote setpoint enable mode as
soon as the mating connector is installed.

6.6

Flow rate adjustment
Do not exceed coolant pressure of 100 psi.

Caution

Exceeding the coolant pressure may result in damage to
the pump.

The Fluorinert flow rate of the TCU 40/80 is factory set to provide approximately 3 gpm at 60 psig/20°C
for a unit operating at 208vac/3-ph/60Hz. If the flow rate requires adjustment to accommodate the

process equipment suppliers recommendations, follow the steps below. The flow rate may be measured
using a flow meter external to the TCU 40/80.
1.

Open the left side access door.

Peel back the insulation covering the by-pass valve. Refer to Figure 1 on page 6.

The valve handle can be found in the plastic bag secured to the pump. Reduce the flow by turning the
valve stem clockwise. To increase the flow, turn the stem counter clockwise. The valve is a 1/4 turn
valve.

Once the required flow rate has been achieved, return the valve handle to the bag for future use, glue
the insulation back in place, and secure the access door.

TCU40/80 Temperature Control Unit

MAINTENANCE
This section contains information that will allow you to safely keep your TCU 40/80 in working order. It
contains important Hazard Warnings, a Preventive Maintenance Schedule on page 27, and a
Troubleshooting Guide on page 41.

Maintenance to the electrical system of the
TCU40/80 should be performed by qualified
personnel only.

Warning

The refrigeration units are scaled and are not user
serviceable. Only trained and licensed

refrigeration personnel should perform repairs on
this equipment.

All applicable EPA regulations apply.

7.1

Hazard warnings

High Pressure

Water and the coolant arc pressurized within this
equipment. Water pressure will depend upon
utility supply, but usually is up to 60 psig. The
coolant can be at pressures up to 100 psig.
Refrigerant pressures can be up to 300 psig.

Do not open lines with pressure present.

Toxic Gases

The coolant breaks down above 215 °C. If the
coolant is allowed to reach these temperatures,
toxic gasses may be discharged from the unit.
Refer to the Appendix for Material Safety Data

Sheets for the coolant and refrigerant used in this
system.

High Pressure

The reservoir may become pressurized due to

changes in temperature.
Under no circumstances should the reservoir
pressure relief valve be removed or capped off.

TCU 40/80 Temperature Control Unit

High Pressure

The refrigerant lines are at high pressure.

Under no circumstances should the refrigerant

pressure relief valve be removed or capped off.

Eye Protection

Leakage or failure of high pressure circuits may
cause injury or irritation of the eyes.

Eye protection should be worn when working with
fluid systems.

Hand Protection

Hot or cold fluids and surfaces can cause injury or
irritation of the hands.

Hand protection should be worn when working
with these fluid systems.

Electric Shock

Ensure that all electrical power has been removed

and the main circuit breaker has been turned off
prior to opening the electrical drawer. The
EMERGENCY OFF circuit (EMO) does not
disconnect all power from the electrical drawer.

Extreme caution must be observed if performing
maintenance operations with the drawer open.

Hot Surface

Refrigeration and circulating fluid lines can attain
temperatures as high as 110 °C.

Caution must be observed.

TCU 40/80 Temperature Control Unit

7.2

Hazards
Table 9 gives the classifications of electrical hazards. This number indicates the severity of the hazard as
defined by SEMI S2-93.
Table 9 - Electrical hazards classifications
Classification

Description

Comment

Typel

Equipment is fully de-energized.

None called out.

Type 2

Equipment is energized. Live circuits are covered or

None called out.

insulated. Work is performed at a remote location to
preclude accidental shock.
Type 3

Equipment is energized. Live circuits are exposed and
accidental contact is possible. Potential exposures are less
than 30 volts RMS, 42.2 volts peak, 240 volt-amps, 20
Joules. (See NFPA 79-14.3, IEC 204, UL 1950 & 1262, IEC

Called out as Type 3.

950.)
Type 4

Equipment is energized. Live circuits are exposed and
accidental contact is possible. Potential exposures are greater

Called out as Type 4.

than 30 volts RMS, 42.2 volts peak, 240 volt-amps, 20
Joules or radio frequency (rf) is present.
Type 5

Equipment is energized and measurements and adjustments
require physical entry into the equipment, or equipment
configuration will not allow the use of clamp-on probes.

TCU 40/80 Temperature Control Unit

None called out.

7.3

Filling the reservoir
Warning

When retrofitting a TCU 40/80 in place of a
water/glycol unit, the coolant lines must be flushed
with nitrogen to remove moisture prior to
installation.

Open the vent port valve (see Figure 8 on page 18) to avoid air locks that may slow filling.

Remove the plug and fasten the funnel accessory to the Vi" fill port located at the rear of the unit (see
Figure 8 on page 18).

Fill the reservoir with Fluorinert heat transfer fluid. The amount needed for a new installation is

approximately 44 pounds for the TCU and an additional amount for process lines (approx. .15 lbs/ft.;
1/2" tube) and other external volumes. Fill the reservoir until the Coolant Normal Level LED on the
rear electrical panel turns green.
4.

In the event of over-filling, the Coolant Normal LED will change from green to amber. Drain excess
fluid until the Coolant Normal Level LED turns green. Refer to Draining/Bleeding the Coolant
Reservoir, below.

7.4

Draining/bleeding the coolant reservoir
It may be necessary to drain the coolant reservoir for storage of the TCU 40/80 or due to moisture

contamination of the coolant.

It may be necessary to bleed the coolant reservoir to correct an overfill condition.
Note: The unit may continue running during this procedure.
Follow the procedure below whenever it becomes necessary to drain or bleed the system.

Firtreme
UXtreme Temnerature
1 emperature

Hot or coldHot
coolant
mayfluid
reach
°C t0
+80 °C during
operation.
or cold
can"40
cause
burns.
Coolant should be at ambient temperature before
handling.

Open the vent valve located at the top of the unit.

Place an appropriate container beneath the drain valve. The capacity of the container used needs to be
10 liters plus the volume of the hoses and the volume of the process equipment.

Remove the cap fitting from the end of the drain valve.

Open the reservoir drain valve.

5a. To correct an overfill condition, drain the reservoir until the Coolant Level Normal LED on the rear
electrical panel turns green. Close the reservoir drain and vent valves when the LED turns green.
5b. To empty the reservoir, remove power to the TCU and allow the unit to drain until all coolant has
been removed.
6.

Close the reservoir drain and vent valves.

For proper disposal of the coolant, follow the manufacturers recommendations.

Note:

Uncontaminated Fluorinert may be reused. The Fluorinert should be stored in a compatible and
sealed container.

TCU 40/80 Temperature Control Unit

7.5

Temperature probe calibration
The Edwards Temperature Controller comes equipped with a factory calibrated internal +10V remote
input/output option making calibration unnecessary.

7.6

Preventive maintenance schedule
Table 10 shows the maintenance required to keep the TCU 40/80 in good working order. Failure to follow
this schedule may result in degradation of system performance.
Table 10 - Preventive maintenance schedule
Frequency

Operation

Hazard

Verify system status
Check coolant level

Semi

Check lamps

(Type 3)

Coolant leak check

(Type 3)

Refrigeration leak check

(Type 3)

Insulation repair

(Type 3)

Water leak check

(Type 3)

Replace solenoid coils SV1 and SV2

(Type 3)

System check

(Type 3)

Lamp replacement

(Type 3)

annual ly

Annually

Note: All maintenance should be recorded on the Preventative Maintenance Record label located on the
inside ofthe left-hand side access panel.

TCU 40/80 Temperature Control Unit

7.7

Semi-annual preventative maintenance
Refer to the Troubleshooting section on page 42 when results for any ofthe following checkpoints are
not as expected.

7.7.1

7.7.2

Required equipment
•

12" slotted screwdriver

•

Spare lamps (24 vac / 60 mA)

•

4" slotted screwdriver

•

Fluorinert

•

Two 10" adjustable wrenches

•

Insulation Tape

•

Halogen leak detector

Preparation
•

Locate the two screws securing each of the side access panels and loosen to open doors.

•

Listen for excessive or questionable noise or sounds coming from the pump assembly, motor,
compressor, or solenoid valves (SV1 and SV2).

7.7.3

Verify system status
•

Verify system status led indicators on the front electrical panel. (See - Front panel power up
indicator conditions table on page 20.)

7.7.4

Refrigeration leak check
•

Visually check for signs of compressor oil on the base, insulation, and on all refrigeration pipework.

•

Using a halogen leak detector check around the discharge and suction service valves of the
compressor, and all accessible refrigeration pipework.

7.7.5

Fluorinert leak check
•

7.7.6

Water leak check
•

Visually check for signs of water leaks at all water line connections external to the TCU and at the
condenser connections inside the unit.

7.7.7

Insulation repair
Note:

Ificeformation is excessive, it may be necessary to correct this condition before insulation can be
repaired.

•

Visually inspect refrigeration and process fluid lines both inside the TCU cabinet and at the supply
and return line connections for signs of ice formation. Correct insulation as necessary.

TCU 40/80 Temperature Control Unit

7.7.8

Lamp check/replacement
Ensure all electrical power has been removed and

Electric Shock

the main circuit breaker has been turned off due to
the presence of high voltage or current.

Should a lamp require replacement, notify the

Caution

appropriate personnel that an EMO condition will
occur.

Failure to follow these instructions may result in
the shut-down of the process tool and associated
equipment.

Visually verify that the POWER ON and RESET lamps are working. If either lamp needs replacement
and the proper authorization has been obtained:
1.

Press STOP.

Turn off the main circuit breaker (CB1).

Disconnect power cord from mains power supply.

Locate the two securing screws on the front electrical panel and loosen . Open the electrical drawer.

If replacing the POWER ON lamp, locate contactor block (LPl) on the back side of the front
electrical panel. If replacing the RESET lamp, locate contactor block (PBl) on the back side of the
front electrical panel.

Pry up the metal retaining ring attached to the coupling plate. Remove the contact block assembly.

Replace the defective lamp.

Reinstall the contact block assembly by snapping it back onto the front clement.

Close the electrical drawer and tighten securing screws.

10. Reconnect mains power and turn on the main circuit breaker (CBI).. The POWER ON lamp should
be illuminated.

11. Press RESET. The lamp should illuminate. Press START to reactivate the TCU.

Figure 11 - Lamp replacement

TCU40/80 Temperature Control Unit

7.8

Annual preventative maintenance
Refer to the Troubleshooting section on page 42 when resultsfor any ofthefollowing check points are
not as expected.

7.8.1

7.8.2

7.8.3

Required equipment
12" slotted screwdriver

Miniature diagonal cutters

4" slotted screwdriver

Halogen leak detector

7" slotted screwdriver

3\8" open-ended wrench

8" phillips screwdriver

1\4" open-ended wrench

Two 10" adjustable wrenches

Wire crimpers - Insulated terminal

Wire strippers (14 AWG)

Digital multimeter (DMM)

Two test clips w/12" leads

Remote RTD connector plug (J72J3)

Required supplies
•

Preventative Maintenance Kit (P60153005)

•

Fluorinert

•

Insulation Tape

Solenoid valve coil replacement

Electric Shock

Ensure all electrical power has been removed and

Caution

notify the appropriate personnel that an EMO

the main circuit breaker has been turned off due to
the presence of high voltage or current.

Should a solenoid valve coil require replacement,
condition will occur.

Failure to follow these instructions may result in
the shut-down of the process tool and associated
equipment.

Press STOP.. Turn off the main circuit breaker (CB1).

Disconnect the power cord from the mains power supply.

Locate the main cooling solenoid valve (SV1) from the left side access door.

Remove the junction box attachment screw. Slide off the junction box cover.

Back off the strain relief retaining nut.

Unfasten the ground screw. Cut off the wire butt splices (ensuring that the wire labels remain
attached to the base assembly) and pull the wires through the junction box.

Remove the solenoid valve coil lock nut. Lift off the spacer cup. Separate the coil from the solenoid
valve body by gently pulling up on the coil.

Remove replacement solenoid valve coil from packaging.

Remove the junction box.

10. Note the location of the conduit hole on the coil removed and remove the appropriate "knock-out" on
the replacement coil.
30

TCU 40/80 Temperature Control Unit

11. Gently slip the replacement coil onto enclosing tube of solenoid valve body.
12. Pull the base assembly wiring through conduit hole and slip on the strain relief retaining nut.
13. Attach the ground wire to coil.

14. Strip the ends of all wires on base assembly and solenoid valve coils.
15. Crimp on the butt wire splices.

16. Tighten the strain relief retaining nut.

17. Install the original junction box cover and fasten attachment screw.
18. Install the spacer cup.
19. Install and tighten the lock nut.

20. Verify the coil junction box is labeled SV1.

21. Repeat the procedure for Hot Gas Bypass solenoid valve coil (SV2).
22. Discard the old solenoid coils.

23. Perform the System Check procedure.

Retaining nut

Lock

nut

Spacer cup

Junction

box

cover

Ground screw

Figure 12 - Solenoid coil replacement

TCU 40/80 Temperature Control Unit

7.8.4

System check
Component settings

Motor overload setting (K3)

3.S amps

Current sensing relay setting (CSR)

25 amps

Thermostat setting (TS1)

210°F (Differential set at 10°F)

High pressure switch setting (PS1)

300 psig. (Differential set at 40 psig)

Power-up conditions

•

Power cord connected to mains power supply.

•

All circuit breakers on.

•

EMO released.

•

Drawer interlock switch in maintenance position.

•

Host connector J72J2 installed (pins 5 & 6 shorted).

•

READY lamp on.
Indicator

Condition

Relays

All off

LEDs

All off

Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Reset button

1.
2.

Press RESET.
Verify contactor Kl engages.

Verify LED indicator on PMR is green.
Indicator

Relays

Condition
CR4on

all others off
LEDs

FACILTITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT TEMPERATURE, COOLANT NORMAL LEVEL, green
COMPRESSOR, COOLANT FLOW,, COOLANT LOW LEVEL, REMOTE
RTD off

Power

Reset

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

TCU 40/80 Temperature Control Unit

Temperature controller
1.

All control parameters and selections procedures for the temperature controller are accomplished
through simple MENU selections. These MENU selections are organized into PAGES. On each page
you will find a specific set of related functions. The PAGES setup structure is as follows : diSP
PAGE, Ctrl PAGE, inPt PAGE, ScAL PAGE, Outl PAGE and Out2 PAGE.
To select a PAGE :

Press and hold the RESET key, while pressing the ^ otW keys. The upper display of the
temperature controller will increment or decrement through the PAGEs, and PAGE will be displayed
in the lower display.
To select a MENU :

After reaching the correct page, press reset to move through MENUs. The alpha cue for the MENU
will appear on the upper display and the current value will appear in the lower display.
To change a MENU value :

After the MENU is selected and displayed, use the^ and *V keys to change the value.
2.

To enter the SetUp Mode, press the controller RESET key and hold it for about 3 seconds. The
controller will display LocH XXX where XXX is the security code. The security code number should

be 458. If not, press either the JLot^ keys until the display reads 458. This is the first menu in the
Ctrl PAGE.

Verify that the menu settings for the Ctrl PAGE are as follows :
PID1 -heatinR

value

PID2 - cooling

value

parameter

Pbl

8.0

Pb2

12.5

proportional band

Arl

0.43

Ar2

0.7

automatic reset

rAtl

7.0

rAt2

9.0

rate

dbl

1.0

db2

1.0

deadband

OFst = 0.0 FL = On

Orng = 0.0

LooP = OFF

Auto = 4

rrAt = OFF

Cont = HtCI

CooL == PID2

rSP = On

Enti = rSP

Au = none

Aout = Proc

rSEn = OFF

Select the next page which is the InPT PAGE. Verify that the menu settings for the InPt PAGE are
as follows:

I SEnS = rtdt unit = °C
5.

CoFF = .0

1 SPLL = -40.0

| SPUL = 80.0

Select the next page which is the ScAL PAGE. Verify that the menu settings for the ScAL PAGE
are as follows:
DP= 1 AinL = -50.0

AinH = 100.0

AotL = -100.0

AotH = 100.0

rSPL=100.0

rSPH = 100.0

Select the next page which is the Outl PAGE. Verify that the menu settings for the Outl PAGE are
as follows:

Cycl = 16

HoFF = .0

Select the next page which is the Out2 PAGE. Verify that the menu settings for the Out2 PAGE arc
as follows:
Cyc2 =16

OL1 = 100.0

OL2 = 100.0

CoFF = .0

Press START.

To return to Operating Mode, press and hold the RESET key for more than 3 seconds. The
controller will automatically return to operating mode after 10 minutes of no pushbutton activity.
9.

Press START.

TCU 40/80 Temperature Control Unit

EMO circuit

Do not perform the EMO circuit check while the
TCU is on-line with the process tool.
Failure to follow these instructions will lead to the

shut-down of the process tool and other associated

equipment.

Press the EMO button and check that the following occur.

•

READY lamp goes out.

•

All front panel LED indicators go out.

•

Temperature controller shuts off.

•

Kl contactor opens.

Release the EMO button and press RESET.

•

Remove rear panel connector J72J2. The READY lamp should go out. Contactor Kl should open, the

Perform the following:

temperature controller and the front panel LED indicators should go out. Replace J72J2 connector
and press RESET.

Press in the interlock switch then release it. The READY lamp should go out. Contactor Kl should

open, the temperature controller and the front panel LED indicators should go out. Place the drawer
interlock switch in the maintenance position.
•

Press RESET

•

Press START

PMR

On the PMR rotate the adjustment knob completely clockwise.

Verify the unit shuts down, LED 1 (Facility Power) illuminates red, and that the alarm sounds.

Press MUTE.
Condition

Indicator

CR4,CRll,CRI3on

Relays

all others off

FACILITY WATER, CIRCUIT BREAKERS, COOLANT TEMPERATURE,

LEDs

COOLANT NORMAL LEVEL green
COMPRESSOR, COOLANT FLOW, COOLANT LOW LEVEL, REMOTE
RTD.off
FACIL1TY POWER red
Power

Reset

Off

PMR

Red

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Return the PMR adjustment control to the original position.

Press RESET then START

TCU 40/80 Temperature Control Unit

Current sensing relay

Set CSRI to SO amps. The indicator LED on CSRI should go from green to red.

After a 5 second time delay, verily that the unit shuts down, COMPRESSOR illuminates red and the
alarm sounds.

Press MUTE.
Condition

Indicator
CR4.CR8.CRll.CR13 on

Relays

alt others off
FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT TEMPERATURE, COOLANT NORMAL LEVEL green

LEDs

COOLANT FLOW, COOLANT LOW LEVEL, REMOTE RTD off
COMPRESSOR red
Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Reset CSRI to 25 amps.

Press RESET.

Press START.

Circuit breaker

Power off CB4. The TCU will shut down, alarm will sound and CIRCUIT BREAKER LED should
be red.

Press MUTE.

Power on CB4, press START.

Repeat steps 1 thru 3 for CB3 and CB2.
Indicator

Relays

Condition
CRI,CR4,CRH,CR13on

all others off
LEDs

FACILITY POWER, FACILITY WATER, COOLANT TEMPERATURE,
COOLANT NORMAL LEVEL green

COMPRESSOR, COOLANT FLOW, COOLANT LOW LEVEL, REMOTE
RTD, off
CIRCUIT BREAKERS RED
Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

TCU 40/80 Temperature Control Unit

■^"^V

Water supply

Short wire #23 (TBl) to wire #54 (relay board J3-13) The TCU will shut down, alarm will sound,
and FACILITY WATER LED should illuminate red.

Press MUTE.
Indicator

Relays

Condition
CR2.CR4,CRll,CR13on

all others off
FACILITY POWER, CIRCUIT BREAKERS, COOLANT TEMPERATURE.

LEDs

COOLANT NORMAL LEVEL green

COMPRESSOR. COOLANT FLOW, COOLANT LOW LEVEL, REMOTE
RTD off
FACILITY WATER red
Power

Reset

Off

PMR

Green

Cuirait sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Remove short.

Press RESET.

Press START.

Reservoir over-temperature

Short wire #23 (TBl) to wire #56 (relay board J3-3)). The TCU will shut down, alarm will sound and
COOLANT TEMPERATURE LED should be red.

Press MUTE.
Condition

Indicator
Relays

CR4,CR6.CRll,CRI3on

all others off
LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT NORMAL LEVEL green
COMPRESSOR. COOLANT FLOW, COOLANT LOW LEVEL, REMOTE
RTD off

COOLANT TEMPERATURE red
Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Remove short.

Press RESET.

Press START.

TCU 40/80 Temperature Control Unit

Coolant flow

Short wire #57 (Relay board J2-5) to wire #58 (Relay board J3-9). After 5 second delay, the TCU will

Press MUTE.

shut down, alarm will sound and COOLANT FLOW LED should be red.

Condition

Indicator
CR4,CR7,CRll,CR13on

Relays

all others off

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT TEMPERATURE, COOLANT NORMAL LEVEL green

LEDs

COMPRESSOR, COOLANT LOW LEVEL, REMOTE RTD off
COOLANT FLOW red
Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Remove short.

Press RESET

Press START.

Compressor

Short wire #57 (Relay board J2-5) to wire #60 (Relay board J3-1). After 5 second delay, the TCU will
shut down, alarm will sound and COMPRESSOR LED will be red.

Press MUTE.
Condition

Indicator
Relays

CR4,CR8,CRll,CR13on

all others off
LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT TEMPERATURE, COOLANT NORMAL LEVEL green

COOLANT FLOW, COOLANT LOW LEVEL, REMOTE RTD off
COMPRESSOR red
Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green if used.

Remove short.

Press RESET.

Press START.

TCU 40/80 Temperature Control Unit

Circulation pump

Adjust overload trip on K3 to the minimum setting. Within three minutes the overload will trip.
After a five second time delay, the TCU will shut down, the alarm will sound and the COOLANT
FLOW LED should illuminate red.

Press MUTE.
Indicator

Relays

Condition
CR4,CR7,CRU,CRI3on
all others off

LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COOLANT TEMPERATURE, COOLANT NORMAL LEVEL green
COMPRESSOR, COOLANT LOW LEVEL, REMOTE RTD off
COOLANT FLOW red

Power

Reset

Off

PMR

Green

Current sensing relay

Off

Note: REMOTE RTD is optional. LED will be green ifused.

Reset overload trip to 3.5 amps.

Press RESET.

Press START.

Reservoir overfill

Short wire #23 (TBl)towire#63 (Relay board J3-4). COOLANT NORMAL LEVEL LED will go
from green to amber.
Indicator

Relays

Condition

CR4,CR5,CR10,CRI2on
all others ofT

LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COMPRESSOR, COOLANT TEMPERATURE, COOLANT FLOW
COOLANT NORMAL LEVEL green
COOLANT LOW LEVEL, REMOTE RTD off
COOLANT NORMAL LEVEL amber

Power

Reset

PMR

Green

Current sensing relay

Green

Note: REMOTE RTD is optional. LED will be green if used.

TCU 40/80 Temperature Control Unit

Remote start/stop

Remove jumper from terminal strip (TB1 ).The TCU will shut down.

Press RESET.

Press START.

Remote temperature probe

Install connector J72J3 and verify REMOTE RTD illuminates green.
Condition

Indicator
Relays

CR4,CR9,CRI0on

all others off
LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,

COMPRESSOR, COOLANT TEMPERATURE, COOLANT FLOW,
COOLANT NORMAL LEVEL, REMOTE RTD green
COOLANT LOW LEVEL, off
Power

Reset

PMR

Green

Current sensing relay

Green

Remove connector J72J3.

Cooling

Change the temperature controller set point to -40°C.

Verify CR15 on the relay board illuminates.

Verify main solenoid valve (SVl) has opened by confinning that the sight glass has filled with
refrigerant.

Verify OUT 2 LED on the temperature controller is on.
Indicator

Relays

Condition

CR4,CR10,CRI5on
all others off

LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COMPRESSOR, COOLANT TEMPERATURE. COOLANT FLOW,
COOLANT NORMAL LEVEL, REMOTE RTD green
COOLANT LOW LEVEL, REMOTE RTD off

Power

Reset

PMR

Green

Current sensing relay

Green

Note: REMOTE RTD is optional. LED will be green if used.

TCU 40/80 Temperature Control Unit

Heating
1.

Change the temperature controller set point to 80°C.

Verify contactor K4 pulls in.

Verify CR15 goes out. Verify OUT 1 on the temperature controller is on and OUT 2 is off.

Verify hot gas bypass solenoid (SV2) is energized.
Condition

Indicator
Relays

CR4,CRI0on
all others off

LEDs

FACILITY POWER, FACILITY WATER, CIRCUIT BREAKERS,
COMPRESSOR, COOLANT TEMPERATURE, COOLANT FLOW,
COOLANT NORMAL LEVEL, REMOTE RTD green

COOLANT LOW LEVEL, REMOTE RTD off
Power

Reset

PMR

Green

Current sensing relay

Green

Note: REMOTE RTD is optional. LED will be green (fused

Process value setting

Set the temperature controller to the proper process set value.

Verify all the host interface connections are mated properly.

TCU 40/80 Temperature Control Unit

7.9

Preventive maintenance checklist

Record date:

Serial no:

Customer name:

Line / area:

Checked by:

Tool name:

System status

Timer hours:

Hours

Coolant pressure:

psig

Process temperature:

°C

Fluonnert type:

FC8270

Quantity ofFluonnert added:
Operation mode:

Remote

Utilities water temperature:

Leak check results:

Parts replaced

FC77

Other:

lbs.

liters

Local

°C
Pass

Fail

Quantity

Remarks:

Cause / reason

Actions / concerns

TCU 40/80 Temperature Control Unit

>*%k

TROUBLESHOOTING
Table 11, Table 12, Table 13 and Table 14 identify fault conditions that you may encounter with the TCU
40/80. For additional assistance contact the Edwards Service Department.

Table 11- Faults identified by front panel lamps
Possible causes

Indicator
POWER ON lamp is

not illuminated.

40/80.

power

the

Action
TCU

Hazard

Verify that the power cord is plugged in.

Type 4

Verify that outlet's circuit breaker is on.
Verify that the outlet's EMO is not activated.

The

main

power

circuit

Verify that the main power circuit breaker (CB1) is

breaker (CB1) is off.

on.

POWER ON lamp requires

Verify that the POWER ON lamp assembly is

replacement.

receiving 24 VAC. To do this, opening of the
electrical drawer is necessary. This will activate the
drawer interlock switch and shut the TCU 40/80

Type 4

down.

Notify the tool operator prior to opening the
electrical drawer.

Check to see that 24 VAC is present across the lamp
assembly terminal block (LPI),\ terminals XI and
X2. If 24 VAC is present, then replace the POWER
ON lamp. (EHVI part no. P23247900).
Refer

the

"Lamp

Check/Replacement

Procedure " on page 29.

Verify that the transformer isolating circuit breaker

The transformer isolating
circuit breaker CBS may be
off.

CBS is on.

The

Verify that the transformer isolating circuit breaker

transformer

isolating

circuit breaker CB7 may be

CB7 is not tripped. Reset if necessary.

tripped.

One of the following circuit
breakers

may

not

main

power

circuit

breaker (CB1)

•

transformer
isolating
circuit breaker CB5

•

transformer

isolating

circuit breaker CB7

Type 4

P43I26700).

functional:

•

Verify that the main power circuit breaker CB1 is
functional. Replace if necessary. (EHVI part no.
Verify that the transformer circuit breaker CBS is
functional. Replace if necessary. (EHVI part no.
P43129500).

Verify that the transformer circuit breaker CB7 is
functional. Replace if necessary. (EHVI part no.
P43129100).

TCU 40/80 Temperature Control Unit

Table 11- Faults identified by front panel lamps (continued)

POWER ON lamp is
illuminated, but when

Local EMERGENCY OFF

Verify

circuit (EMO) is engaged.

(EMO) is engaged.

RESET is pressed, it
does

not

Ensure

illuminate.

not

illuminated,

and

the

temperature

the
that

front

panel

the

EMERGENCY

interface

connector

OFF

J72J2

Type 3

installed with pins 5 and 6 linked.

The front panel LEDs
are

Hazard

Action

Possible causes

Indicator

Refer to the "Remote Interface wiring schematic"
on page 56.

controller is off.
Electrical
interlock

drawer
switch

safety
is

not

Ensure the electrical drawer is fully closed and that
the securing screws are tightened.

engaged.
Remote

OFF

EMERGENCY

circuit

(EMO)

Verify

that

the

remote

EMERGENCY

OFF

(EMO) is not engaged.

engaged.
Remote

EMERGENCY

OFF circuit (EMO) is not
wired properly to interface

Verify the correct wiring to the interface connector
Refer to the "Remote Interface wiring schematic"

connector J72J2.

on page 56.

POWER ON lamp is

A failure condition exists

Review the front panel status indicators to identify

illuminated.

that must be satisfied.

When

RESET is pressed it

does

not

panel

illuminate.
the

front

LEDs

are

illuminated,

and

the failure mode.
Refer to the "Faults indicated by front panel

lamps" on page 42.

The audible alarm is
sounding,

Type 3

J72J2.

the

temperature controller
is on.
POWER ON lamp is

RESET lamp requires

Verify that the RESET lamp assembly is receiving

illuminated.

replacement.

24 VAC. To do this, opening of the electrical

When

RESET is pressed, it

does not illuminate.
There is no audible
alarm sounding. The
front panel LEDs are
illuminated and do not
indicate the presence
of a failure mode. The
temperature controller
is on.

Type 4

drawer is necessary. This will activate the drawer
interlock switch and shut the TCU 40/80 down.
Notify the tool operator prior to opening the
electrical drawer.

Check to see that 24 VAC is present across the
lamp assembly terminal block (LP2), terminals XI
and X2.

If 24 VAC is present,

then replace the

RESET lamp. (EHVI part no. P23247900).

Refer

the

"Lamp

Check/Replacement

Procedure" on page 29.

TCU 40/80 Temperature Control Unit

Table 12 - Faults indicated by the front panel LED indicators
Possible causes

Indicator

Action

Hazard

FACILITY POWER

Phasing

LED is red; audible

power is reversed.

Swap any two of the three power line supply phases
in the outlet box.

Line voltage is low (below

Correct low line voltage condition.

177 VAC).

Refer to the "Specifications Table" on page 14.

alarm

of the

incoming

Type 4

sounding;

TCU will not start or
has stopped operation.

(PMR) is not set properly to

The adjustment knob of the PMR should be
positioned such that the arrow is pointing towards

177 VAC.

the calibration mark (a black ink marking) on the

The

phase

monitor

relay

Type 4

PMR. The PMR is calibrated to trip at 177 VAC. If
necessary replace the PMR with a known calibrated
PMR. ( EHVJ part no. P60056100).
FACILITY WATER
LED is red; audible
alarm

TCU

has

Water supply is off or not

Verify that the water supply lines are connected

connected.

properly to the unit.

sounding;

Verify water is turned on.

stopped

Refer to the "Water and coolant connections"

operation.

instructions on page IS.
Water supply is below 3

Verify that water supply valves are open and that

gpm.

the water flow is between 3-6 gpm.
Refer to the "Specifications Table" on page 14.

Verify
facilities
water
supply
meets
temperature specification of 10 - 26°C.

Water is too warm.

the

Refer to the "Specifications Table" on page 14.

Pressure switch (PS1) has

Verify that the pressure switch (PS1) is set to 300

tripped.

psig.

CIRCUIT

One of the following circuit

Examine the rear electrical panel of the unit to

BREAKER LED is
red; audible alarm is
sounding; TCU has
stopped operation.

breakers as tripped:

determine which circuit breaker has tripped.

•

Compressor

circuit

breaker (CB2)
•

•

Circulation

pump

Type 4

Refer to the description of the"Rear panel" on
page 13.

Reset the tripped circuit breaker. To restart the unit

circuit breaker (CB3)

press the RESET button to clear the alarm
condition, then press START. If the circuit breaker

Heater circuit breaker

trips again, monitor the current draw from the
proper corresponding component. The maximum

(CB4)

Type 2

current draw is as follows:

•

Compressor: 7 amps per leg

•

Circulation Pump: 3.S amps per leg

•

Heater 3 amps per leg

If the current draw is in excess of the values noted
above, remove power to the unit and contact an
Edwards service representative.

TCU 40/80 Temperature Control Unit

Table 12 - Faults indicated by the front panel LED indicators (continued)
Possible causes

Action

The circuit breaker may not

Verify that the circuit breaker which is tripping is

be functioning properly.

functioning properly. Replace if necessary.

Indicator

Compressor

circuit

breaker:

Hazard

EHVI

part

Type 4

no.

P43129400

Circulation pump circuit breaker: EHVI part no..
P43129300
Heater circuit breaker: EHVI part no. P43129200
COMPRESSOR
LED is red; audible
alarm

TCU

has

Current

sensing

relay

(CSRI) has tripped.

Verify that the current sensing relay (CSRI) is set

Type 4

to 25 amps. To do this, opening of the electrical
drawer is necessary. This will activate the drawer

sounding;
stopped

interlock switch and shut the TCU 40/80 down.

operation.

Notify the tool operator prior to opening the
electrical drawer.

Refrigerant leak.

Visually check for signs of compressor oil on the
base, insulation, around the compressor service
valves, and on all refrigeration pipework.

Type 2

Use a halogen leak detector to leak check all
accessible

refrigeration

pipework

and

the

compressor service valves.

If compressor oil is noted or a leak is located
remove all power to the unit and contact an
Edwards service representative.

Hot

gas

bypass

solenoid

valve (SV2) fail.

Verify 24 VAC is present between wire #15 (J4-5)
on the relay board and wire #4 (TBI). To do this
opening of the electrical drawer is necessary. This
will activate the drawer interlock switch and shut
the TCU 40/80 down.

Type 4

Notify the tool operator prior to opening the
electrical drawer.
Verify current draw of the solenoid is not above 1
amp.

Verify that the resistance of the coil is about 8 Cl.

If necessary, replace the coil

(EHVI part no.

P33030300).

Main cooling solenoid valve
(SVI) fail.

Verify 24 VAC is present between wire #16 (J4-5)
on the relay board and wire #4 (TBI). To do this,
opening of the electrical drawer is necessary. This
will activate the drawer interlock switch and shut
the TCU 40/80 down.

Type 4

Notify the tool operator prior to opening the
electrical drawer.

Verify current draw of the solenoid is not above 1
amp.

Verify that the resistance of the coil is about 8 Cl.
If necessary, replace

the coil

(EHVI part no.

P33O3O3OO).

TCU 40/80 Temperature Control Unit

'■V

Table 12 - Faults indicated by the front panel LED indicators (continued)
Indicator

Possible causes

Compressor
tripped
thermal over-load.

Action

Hazard

Verify that the temperature of the discharge line of
the compressor has not exceeded

Type 4

195°F. If the

temperature is above 195°F, remove power to the

unit and contact an Edwards service representative.
Warning: Ensure all electrical power has been
removed and the main circuit breaker has been

turned off prior to checking the compressor
motor winding resistance.
Verify compressor motor winding resistance.
The resistance between any two terminals of the
compressor motor should be 1.4 ft (± 0.3 fl).

Verify all three phases are within specification.
If the motor winding resistance are out of tolerance
contact an Edwards service representative.
Incorrect line voltage to the

Verify that the compressor is receiving all three

compressor.

phases (208 VAC) at the compressor terminals.

Coolant

An excessive heat load is

Ensure the heat load power does not exceed 2000

TEMPERATURE

causing

watts.

LED is red; audible
system shut
down.

°C.

alarm;

the

coolant

temperature to exceed 90

The

temperature

switch

Refer to the "Specifications Table" on page 14.

Verify that the temperature switch (TSI) is set at

(TSI) is not set correctly.

210 °F.

Coolant FLOW LED

Coolant

Verify coolant line valves are open.

is red; audible alarm;

valves at the rear of TCU

system shut down.

are closed.

supply

shut-off

Supply flow is inadequate.

Type 4

Verify adequate supply flow.

Type 2

Eliminate possible

coolant line restrictions.
Refer to the "Specifications Table" on page 14.

Circulation

pump

thermal

over-load protector (K3) is
set improperly.

Verify that the circulation pump thermal over-load
protector (K3) is set to 3.SA. To do this, opening of
the electrical drawer is necessary. This will activate
the drawer interlock switch and shut the TCU

Type 4

40/80 down.

Notify the tool operator prior to opening the
electrical drawer.
Circulation

pump

thermal

over-load protector (K3) is

tripped.

Press the "reset" button on the circulation pump
thermal over-load protector (K3) to ensure that it is

Type 4

not tripped. To do this, opening of the electrical
drawer is necessary. This will activate the drawer
interlock switch and shut the TCU 40/80 down.
Notify the tool operator prior to opening the
electrical drawer.

TCU 40/80 Temperature Control Unit

Table 12 - Faults indicated by the front panel LED indicators (continued)
Indicator

Possible causes

Action

Flow switch may not be set

Monitor the voltage between wire #57 (J2-S) and

properly.

wire #58 (J3-9) located on the relay board. To do

Hazard
Type 4

this, opening of the electrical drawer is necessary.
This will activate the drawer interlock switch and
shut the TCU 40/80 down.
Notify the tool operator prior to opening the
electrical drawer.

Place

the

drawer

interlock

switch

the

maintenance position. Press the RESET button to

clear the alarm condition, then press START.
If not, a minor
adjustment of the reed contact of the flow switch is
required.
There should be 24 VDC present.

Remove the insulation from the enclosing tube of
the flow switch. Loosen, but do not remove, the two
locking plate securing screws on the top of the flow
switch. This will allow movement of the reed
contact.

Make minor adjustments to the reed contact until 0
VDC is seen at "no flow" and 24 VDC is present
when the unit is running.

After the proper adjustment to the reed contact is
complete, tighten the locking plate securing screws
and re-attach the insulation.
Excessive

current

draw

from the circulation pump

Verify current draw from each phase of the
circulation pump motor does not exceed 3.5 Amps.

Type 4

motor.

Coolant
LEVEL

NORMAL
LED

Reservoir is over-filled.

amber.
Coolant

LEVEL

Drain the reservoir until the LED turns green.

Refer to"Draining/bleeding the coolant reservoir"
on page 26..

LOW

LED

Fluid volume is low (less
than 8 liters).

amber.

There may be a leak.

Add fluid to reservoir until LED turns green.
Refer toTilling the reservoir" on page 26.

Visually check for signs of leaks inside the unit and
at all connections between the TCU 40/80 and the
process tool. Check all process line connections for

Type 2

leaks.
Refer to the "Fluorinert leak check " on page 28.

TCU 40/80 Temperature Control Unit

Table 12 - Faults indicated by the front panel LED indicators (continued)
Indicator
Coolant

Possible causes
LOW

LEVEL LED is red.

Action

Hazard

Coolant level is very low;

Reservoir needs to be filled.

less than 3.5 liters.

Refer to "Filling the reservoir" on page 26.

Reservoir

drain

valve

Close the drain valve.

open.

There may be a leak.

Visually check for signs of leaks inside the unit and

Type 2

at all connections between the TCU 40/80 and the

process tool. Check all process line connections for
leaks.
Refer to "Fluoriaert leak check" on page 28.
REMOTE RTD is in

Terminals 4 and 5 on the

Verify that terminals 4 and 5 on interface connector

use but LED is off.

interface

J72J3 are linked.

connector

J72J3

are not linked.

Type 3

Refer to the "Remote Interface wiring schematic"
on page 56.

Table 13 - Faults identified by rear panel indicators

Coolant
LEVEL

NORMAL
LED

Drain the reservoir until the LED turns green.

Reservoir is over-filled.

Refer

amber.

Coolant
LEVEL

Hazard

Action

Possible causes

Indicator

to"Draining/bleedlng

the

coolant

reservoir " on page 26.
LOW
LED

Fluid volume is low; less

Add fluid to reservoir until LED rums green.

than 8 liters.

Refer touFilling the reservoir"on page 26.

There may be a leak.

Visually check for signs of leaks inside the unit and
at all connections between the TCU 40/80 and the
process tool. Check all process line connections for

amber.
Type 2

leaks.

Refer to "Fluorinert leak check " on page 28.
Coolant

LOW

LEVEL LED is red.

Coolant level is very low;
less than 3.5 liters.

Reservoir needs to be filled?

Reservoir

Close the drain valve.

drain

valve

Refer to"Filling the reservoir"on page 26.

open.

There may be a leak.

Visually check for signs of leaks inside the unit and
at all connections between the TCU 40/80 and the

Type 2

process tool. Check all process line connections for
leaks. Refer to "Fluorinert leak check" on page
28.

TCU 40/80 Temperature Control Unit

Table 14 - Miscellaneous fault conditions
Indicator

Possible causes

Host
fail
signal.
Supplies fail signal to
the
host
when
any

interface
of the

Action

Hazard

Unit in STOP mode

Refer to the "Faults indicated by the front panel

FACILITY POWER Fail

LED indicators" on page 44.

FACILITY WATER Fail
CIRCUIT BREAKER Fail

following occur:

COMPRESSOR Fail
TEMPERATURE Fail

FLOW Fail
Coolant

LOW

LEVEL

FAULT
Host

wam

signal.

Supplies wam signal
to

the

when

process
any

tool
the

Coolant

NORMAL

LEVEL OVER-FILL

Refer to the "Faults indicated by the front panel
LED indicators" on page 44

Coolant LOW LEVEL

following occur:
RTD wired incorrectly to

Temperature

controller
value blinks.

process

the

interface

connector

J72J3.

the

"Remote

Interface

Type 3

wiring

schematic" on page 56.

Terminals 4 and 5 are not
linked

Verify that the remote RTD is wired correctly.
Refer

the

interface

connector J72J3.

Verify that terminals 4 and 5 on connector J72J3
are linked.
Refer

the

"Remote

Interface

Type 3

wiring

schematic" on page 56.
Incorrect RTD type being

Verily that the RTD is 100 ohm European.

utilized.
Temperature
parameters

are

controller
not

set

factory defaults.
Failure to cool.

Main cooling solenoid valve
(SVl)fail.

Verify temperature controller PID settings.

Type 2

Refer to the "Temperature controller" portion of
the System Check on page 21.

Verify 24 VAC is present between wire #16 (J4-5)
on the relay board and wire #4 (TB1). To do this,

Type 4

opening of the electrical drawer is necessary. This
will activate the drawer interlock switch and shut
the TCU 40/80 down.
Notify the tool operator prior to opening the
electrical drawer.

Verify current draw of the solenoid is not above 1
amp.

Verify that the resistance of the coil is about 8 Q.
If necessary, replace the coil (EHVI part no.
P3303O3OO).

Relay board failure.

Verify that the main cooling relay (CR15) comes
on when the unit is in cooling mode.

Type 3

Moisture is in the system.

Verify that the moisture indicator in the sight glass

Type 2

is green. If it appears yellow in color remove power

from the unit and notify an Edwards service
representative.

TCU 40/80 Temperature Control Unit

Table 14 - Miscellaneous fault conditions (continued)
Indicator

Hazard

Action

Possible causes

Visually check for signs of compressor oil on the
base, insulation, around the compressor service
valves, and on all refrigeration pipework.

Refrigerant leak.

Type 2

Use a halogen leak detector to leak check all
accessible

refrigeration

pipework

and

the

compressor service valves.
If compressor oil is noted or a leak is located
remove all power to the unit and contact an
Edwards service representative.
Temperature
parameters

controller

are

not

set

factory defaults.
Temperature

Type 2

Verify temperature controller PID settings.
Refer to the "Temperature controller" portion of
the System Check on page 21.

controller

not functioning properly.

Verify that the OUT 2 lamp on the front of the
temperature controller is ON when the unit is in

Type 4

cooling mode.
Replace the temperature controller if necessary
(EHVI part no. P43008000).

Remote START/STOP

J72J2 interface connector is

Verify proper wiring of connector J72J2.

fail.

wired incorrectly.

Refer

the

"Remote

Interface

Type 3

wiring

schematic " on page 56..

Remote

START/STOP

jumper not removed

Verify that the remote START/STOP jumper
located across terminal TB1-I on terminal block
TB1 is removed. To do this, opening of the
electrical drawer is necessary. This will activate
the drawer interlock switch and shut the TCU

Type 4

40/80 down.

Notify the tool operator prior to opening the
electrical drawer.

Hour counter fail.

Hour counter not recording
operating time.

Verify 24 VDC across the wires connected to the

Type 4

hour counter (wire #28 and wire #29). To do this,
removal of the front access panel is necessary.
Replace the hour counter if necessary (EHVI part
no. P43144900).

Remote
enable fail.

setpoint

Absence of 24 VAC supply

Verify the host 24 VAC supply to pin 3 and pin 4

to interface connector J72J2

on connector J72J2.

or interface connector
wired incorrectly.

schematic" on page S6..

Relay board failure (CR14).

Refer

the

"Remote

Interface

Type 3

wiring

Verify that the remote setpoint enable relay (CR14)

Type 4

is on.

Temperature
parameters

are

controller
not set

factory defaults.

Verify temperature controller PID settings.

Type 2

Refer to the "Temperature controller" portion of
the System Check on page 21..

Temperature controller not

Verify temperature controller is in remote mode.

functioning properly.

The AUX lamp on the front of the controller should

Type 4

be ON.

Replace the temperature controller if necessary
(EHVI part no. P43008000).

TCU 40/80 Temperature Control Unit

TBl

Figure 13 - Electrical drawer

TCU 40/80 Temperature Control Unit

ACCESSORIES AND SPARE PARTS
Accessories and spare parts are available from service centers at Edwards companies in Brazil, Canada,

Germany, Great Britain, Italy, Japan, USA, and a worldwide network of distributors. The majority of
these centers employ service engineers who have undergone comprehensive Edwards training courses.
When ordering please state for each part required:
•

Model and code number of your equipment

•

Description of part

•

Serial number (if any)

Table 15 - Accessories
Description

Part number
P60150400

P60152200

P60154600

P60153100

P60152100

P30152700

Qty

1/2" male connector

Tie-bolt kit

Rod 3/8"-16 x 7"

(Anchors top to bottom unit

Hex nut 3/8"-16

when stacking)

Flat washer 3/8"

Coolant connection kit

Stabilization kit

Unistrut® channel

(Anchors bottom or single

Studs3/8"-16x5"

unit to floor.)

Hex nut 3/8"-16

Flat washer 3/8"

Lock washer 3/8"

100Q RTD; 3 wire, 15' leads

5 pin circular connector (J72J3)

Coolant RTD assembly

100*2 RTD; 3 wire, 15" leads

(external)

5 pin circular connector (J72J3)

Vi" X Vi" pipe connector

Leveler pad

Rod3/8"-16x7"

Hex nut 3/8"-16

Flat washer 3/8"

Lock washer 3/8"

Removable spill containment system

Remote RTD assembly
(auxiliary)

P60188300

Contents

Ball valve 1/2" female NPT

Leveler kit

Secondary containment
receptacle

P60141100

Funnel

Off-set funnel with Swagelok connector

P60153200

Host interface connector kit

9 pin plug (J72J2)

Sockets (J72J2)

37 pin male "D" connector (J72J1) 1

Backshell w/hardware (J72J1)

5 pin circular connector (J72J3)

P53289800

Fluorincrt

11 pound container

P53289900

Fluorinert

44 pound container

TCU 40/80 Temperature Control Unit

Table 16 Spare parts
Part number
P60153005
P60140600
P60153001

P60153003

P60153004

P60140301

Contents

Description

Qty

Preventative maintenance

Lamps, 28vac, 60 mA

kit

Solenoid valve coils

Electrical drawer assembly

Electrical drawer

Refrigeration refurbishment

Filter/dryer

kit

Discharge service valve

Suction service valve

Heater contactor

Electrical refurbishment kit

Coolant pump rebuild kit

Coolant pump/motor

Pump contactor

Solenoid valves

Lamps

Gear shafts

Gears (idler & drive)

Seals

Wear plates

Bearings

Coolant pump/motor

assembly

TCU 40/80 Temperature Control Unit

APPENDIX

Figure 14- Electrical drawer schematic

TCU 40/80 Temperature Control Unit

Process
equipment

TCU
J72J1

#1
#20

+10 VDC

■¥>

#24

+10 VDC

-•Out

#26
#28

«ln

-©

Function

TCU coolant

temp (PV)
Remote
setpoint temp

?n4JTCU fail

VOC

•Out 24~l

,,„ VDCJTCU wornin9

■«-

J72J2 u<
n ■

TCU EMO
condition

24 VAC

iH
#5

#6
i

§7

//
''

enable

N/C
Process equipment
EMO

N/Cr

Stop

i~lrv•

Setpoint

button

Remote

Start button
<

N/O

J72J3
Remote RTO

Figure 15 - Remote interface

TCU 40/80 Temperature Control Unit

i^"ft\

Return of Edwards Equipment - Procedure

(Form HS1)

Introduction
Before you return your equipment you must warn your supplier if the substances you used (and produced) in the

equipment can be dangerous. You must do this to comply with health and safety at work laws.
You must complete the Declaration (HS2) on the next page and sent it to your supplier before you dispatch

the equipment. If you do not, your supplier will assume that the equipment is dangerous and he will refuse to
accept it. If the Declaration is not completed correctly, there may be a delay in processing your equipment.
Guidelines

Take note of the following guidelines:

•

Your equipment is 'uncontaminatcd' if it has not been used or if it has only been used with substances that

•

are not dangerous. Your equipment is 'contaminated' if it has been used with any dangerous substances.
If your equipment has been used with radioactive substances, you must decontaminate it before you return it to
your supplier. You must send independent proof of decontamination (for example a certificate of analysis) to
your supplier with the Declaration (HS2). Phone your supplier for advice.

•

We recommend that contaminated equipment is transported in vehicles where the driver does not share the
same air space as the equipment.

PROCEDURE

Use the following procedure:

Contact your supplier and obtain a Return Authorization Number for your equipment.

Turn to the next page(s), photocopy and then complete the Declaration (HS2).

Drain all fluids from the equipment and its accessories.

Disconnect all accessories, such as levelers and host connectors, from the equipment.

Close the drain, supply and return valves.

Ensure that the electrical drawer and all access doors are fastened securely.

Coil the main power cord and secure.

Wrap the TCU in bubble, polythene, or shrink wrap and enclose in the original or replacement shipping crate
(Edwards part number P90150100).

If the equipment is contaminated, label the pallet (or box) in accordance with laws covering the transport of
dangerous substances.

10. Fax or post a copy of the Declaration (HS2) to your supplier. The Declaration must arrive before the
equipment.

11. Give a copy of the Declaration to the carrier. You must tell the carrier if the equipment is contaminated.

12. Seal the original Declaration in a suitable envelopes attach the envelope securely to the outside of the
equipment package. WRITE YOUR RETURN AUTHORISATION NUMBER CLEARLY ON
THEOUTSIDE OF THE ENVELOPE OR ON THE OUTSIDE OF THE EQUIPMENT PACKAGE.

TCU 40/80 Temperature Control Unit

Return of Edwards Equipment- Declaration

(FormHS2)

Return Authorization Number
You must:

•

Know about all of the substances which have been used and produced in the equipment before you complete this
Declaration

•

Read the Procedure (HS1) on the previous page before you attempt to complete this Declaration

•

Contact your supplier to obtain a Return Authorization Number and to obtain advice if you have any questions

•

Send this form to your supplier before you return your equipment

SECTION 1 : EQUIPMENT
FOR SEMICONDUCTOR APPLICATIONS ONLY:

Tool Reference Number

Equipment model _
Serial Number

Process

Hours

Has the equipment been used, tested, or operated?

Failure Date

yes □ Go to Section 2

Serial Number of Replacement TCU

no □ Go to Section 4

SKCTION 2 : SUBSTANCES IN CONTACT WITH THE EQUIPMENT
Are any of the substances used or produced in the equipment

•

Radioactive

yesQ

noQ

•
•

Biologically active
Dangerous to human health and

yesD
yesQ

noD
noD

safety?
If you have answered 'no' to all of

Your supplier will not accept delivery of any

equipment that is contaminated with radioactive
substances, unless you:

•

Decontaminate the equipment

•

Provide proof of decontamination

YOU MUST CONTACT YOUR SUPPLIER FOR

these questions, go to Section 4.

ADVICE BEFORE YOU RETURN SUCH

EQUIPMENT
/0

SECTION 3 : LIST OK SUBSTANCES IN CONTACT WITH THE EQUIPMENT
Substance name

Chemical

Precautions required
(for example, use protective gloves, etc.)

symbol

Action required after spillage

or human contact.

2
3
4

5
6

SECTION 4 : RETURN IN! ORMATION
Reason for return and symptoms of malfunction:

If you have a warranty claim:

•

who did you buy the equipment from ?

•

give the supplier's invoice number

SECTION 5 : DECLARATION
Print your name:

Print your job title:_

Print your organization:
Print your address:
Telephone number:

Dale of equipment delivery: _

I have made reasonable inquiry and I have supplied accurate information in this Declaration. I have not withheld any

information. I have followed the Return of Edwards Equipment Procedure (HSl) on the previous page.
Signed:_

TCU 40/80 Temperature Control Unit

Date:

Legal notices, limitations and disclaimers
For a period of twelve (12) months from the date of original shipment to Purchaser, the apparatus and

each part of component manufactured be Edward's High Vacuum International (Edwards) is warranted to
be free from functional defects in materials and workmanship. The foregoing warranty is subject to the
condition that regular periodic maintenance and service be performed or replacements made in
accordance with instructions provided by Edwards. The foregoing warranty shall not apply to any
apparatus, part, or component that has been repaired other than by Edwards or an authorized Edwards
representative or in accordance with written instructions provided by Edwards, that has been altered by
anyone other than Edwards or that has been subject to improper installation or abuse, misuse, negligence,
accident, or corrosion.

Purchaser's sole and exclusive remedy under the above warranty is limited to, at Edward's option, repair

or replacement of defective parts of components or return to Purchaser of the price of the apparatus. The
defect must be promptly reported to Edwards or Purchaser must return the part or component with a
statement of the observed deficiency no later than seven (7) days after the expiration date of the warranty
to the address designated by Edwards, transportation charges prepaid. In the event that Edwards elects to
refund the purchase price, the apparatus shall be the property of Edwards and shall be shipped to Edwards
at Edward's expense. This Mechanical Warranty shall be void and the apparatus shall be deemed to be
purchased AS IS in the event that the entire purchase price has not been paid within thirty (30) days of
original shipment of apparatus.

THERE ARE NO EXPRESS OR IMPLIED WARRANTIES THAT EXTEND BEYOND THE
WARRANTY HEREIN ABOVE SET FORTH. THERE IS NO PARTICULAR WARRANTY OF
MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE
APPARATUS OR ANY PART OR COMPONENT THEREOF AND NO WARRANTY SHALL BE
IMPLIED BY LAW.

Items not of Edwards's manufacture but resold by Edwards are the products of other manufacturers and
their warranty, if any, shall apply. THERE ARE NO WARRANTIES OF ANY KIND ON PRODUCTS
OF OTHER MANUFACTURERS RESOLD BY EDWARDS EXCEPT THE WARRANTY OF TITLE.
AND NO WARRANTIES SHALL BE IMPLIED BY LAW. THERE IN NOT EXPRESS OR IMPLIED
WARRANTY OF MERCHANT ABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE WITH
RESPECT TO PRODUCTS OF OTHER MANUFACTURERS.
In no event shall the Purchaser be entitled to any special, indirect, or consequential damages.

TCU 40/80 Temperature Control Unit

MSDS (material safety data sheet) - "SUVA" HP62

MATERIAL SAFETY DATA SHEETS

Du Pont Chemicals
6002FR

Revised 15-JUL- 1993

Printed 16-DEC-1993

"SUVA" HP62"
CHEMICAL PRODUCT/COMPANY IDENTIFICATION
Material Identification

"SUVA" is a registered trademark of DuPont.
Corporate MSDS Number

DUO05612

Company identification

MANUFACTURER/DISTRIBUTOR
DuPont

1007 Market Street
Wilmington, DE 19898

PHONE NUMBERS

Product Information
Transport CHEMTREC:
Medical Emergency

1 -800-441 -9442
1-800-424-9300
1-800-441-3637

COMPOSITION/INFORMATION ON INGREDIENTS
Components
Material

CAS Number

PENTAFLUOROETHANE (HFC-125)

354-33-6

ETHNE, 1,1,1- TRIFLUORO- (HFC-143a)

420-46-2

811-97-2

ETHANE, 1,1,1,2 - TETRAFLUORO. (HFO-134a)

HAZARDS IDENTIFICATION
# Potential Health Effects

Inhalation of high concentrations of vapor is harmful and may cause heart irregularities, unconsciousness, or
death. Intentional misuse or deliberate inhalation may cause death without warning, Vapor reduces oxygen
available for breathing and is heavier than air. Liquid contact can cause frostbite.
(Continued)

TCU 40/80 Temperature Control Unit

HAZARDS IDENTIFICATION (Continued)
HUMAN HEALTH EFFECTS:

Overexposure to the vapors by inhalation may include temporary nervous system depression with
anesthetic effects such as dizziness, headaches, confusion , incoordination, and loss of consciousness.
Higher exposures to the vapors may cause temporary alteration of the heart's electrical activity with
irregular pulse, palpitations, or inadequate circulation; or fatality from gross overexposure. Contact with
the liquid may cause frostbite.
Individuals with preexisting diseases of the central nervous or cardiovascular system may have increased
susceptibility to the toxicity of increase exposures.
Carcinogenicity Information

None of the components present in this material at concentrations equal to or greater than 0.1% are listed
by IARC, NTP, OSHA or ACGIH as a carcinogen.

FIRST AID MEASURES
First Aid
INHALATION

If high concentrations are inhaled, immediately remove to fresh air. Keep person calm. If not
breathing, give artificial respiration. If breathing is difficult, give oxygen. Call a physician.
SKIN CONTACT

Flush skin with water for at least 15 minutes after excessive contact. Treat for frostbite if necessary
by gently wanning affected area. Call a physician if irritation is present.

EYE CONTACT

In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a
physician.

INGESTION

Ingestion is not considered a potential route of exposure.

Notes to Physicians

Because of possible disturbances of cardiac rhythm, catecholamine drugs, such as epinephrine, should
only be used with special caution in situations of emergency life
support.

(Continued)

TCU 40/80 Temperature Control Unit

FIRE FIGHTING MEASURES
Flammable Properties

Flash Point

will not burn

Method

TOC

Flammable limits in Air

% by Volume

LEL

Not applicable

UEL

Not applicable

Autoignition

Not determined

Fire and Explosion Hazards:
Cylinders may rupture under fire conditions. Decomposition may occur.

Potential Combustibility:

"SUVA" HP62 is notflammable at temperatures up to 80 deg C (176 deg F) and at atmospheric pressure.
Data are not available at higher temperatures and pressures. However, one of the components, HFC-143a
is flammable. Another, HFC-134a, has been shown in tests to be combustible at pressures as low as 6o
psig at ambient temperature when mixed with air at concentrations of 65 volume % air. Therefore,
"SUVA" HP82 should not be mixed with air for leak testing. In general, it should not be used or allowed
to be present with high concentrations of air above atmospheric pressures. Experimental data have also
been reported which indicate combustibility of HFC-134a in the presence of certain concgntrations of
chlorine.
Extinguishing Media

As appropriate for combustible in area.
Fire Fighting Instructions

Cool cylinder with water spray or fog. Self-contained breath ng apparatus (SCBA) is required if cylinders
rupture and contents are released under fire conditions.

ACCIDENTAL RELEASE MEASURES
Safeguards (Personnel)

NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before
proceeding with clean-up. Use appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up.
Accidental Release Measures

Ventilate area, especially low or enclosed places where heavy vapors might collect. Remove open flames.
Use self-contained breathing apparatus (SCBA) for large spills or releases.
(Continued)

TCU 40/80 Temperature Control Unit

HANDLING AND STORAGE
Handling (Personnel)

Avoid-breathing vapor. Avoid liquid contact with eyes and skin. Use with sufficient ventilation to keep
employees exposure below recommended limits. Contact with chlorine or other strong oxidizing agents
should also be avoided. See Fire and Explosion Data section.

Storage

Clean, dry area. Do not heat above 52 deg C (125 deg F).

EXPOSURE CONTROLS/PERSONAL PROTECTION
Engineering Controls

Avoid breathing vapors. Avoid contact with skin or eyes. Use with sufficient ventilation to keep employee
exposure below the recommended exposure limit. Local exhaust should be used if large amounts are
released. Mechanical ventilation should be used in low or enclosed places..

Personal Protective Equipment

Impervious gloves should be used to avoid prolonged or repeated exposure. Chemical Splash goggles
should be available for use as needed to prevent eye contact. Under normal manufacturing conditions, no
respiratory protection is required when using this product. Self-contained breathing apparatus (SCBA) is
required if a large release occurs.

Exposure Guidelines

Applicable Exposure Limits
PENTAFLUOROETHANE (HFC-125)
PEL
(OSHA)

TLV

(ACGIH)

None Established
None Established

AEL *

(Du Pont)

1000 ppm,

8 & 12 Hr. TWA

ETHANE. 1, 1, l-TRIFLUORO-(HFC-143a)
PEL
(OSHA)
None Established

TLV
AEL*
ETHANE,
PEL
TLV

(ACGIH)
(DuPont)

None Established-.
1000ppm, 8&12Hr. TWA

1, 1, 1,2-TETRAFLUORO- (HFC-134a)
(OSHA)
None Established
(ACGIH)
None Established

AEL •

(Du Pont)

WEEL

(AIHA)

1000 ppm, 8 & 12 Hr. TWA
1000 ppm, 8 Hr. TWA

* AEL is DuPont's Acceptable Exposure Limit. Where governmental imposed occupational
exposure limits which are lower than the AEL are in effect, such limits shall take precedence.
(Continued)

TCU 40/80 Temperature Control Unit

PHYSICAL AND CHEMICAL PROPERTIES
Physical Data

Boiling Point
Vapor Pressure
%Volatiles

-46.7 C (-52, 1 F) Average
182.1 psia at 25 deg C (77 deg F)
100WT%

Evaporation Rate

(CL4 = 1)
Greater than 1

Solubility in Water

Not determined

Odor
Form
Color
Specific Gravity

slight ethereal
Liquefied gas
Clear, colorless
1.05 @25C(77F)

STABILITY AND REACTIVITY
Chemical Stability

Material is stable. However, avoid open flames and high temperatures.
Incompatibility with Other Materials

Incompatible with active metals, alkali or alkaline earth metals - powdered Al, Zn, Be, etc.
Polymerization

Polymerization will not occur.
Other Hazards

Decomposition

Decomposition products are hazardous. "SUVA" HP62 can be decomposed by
high temperatures (open flames glowing metal surfaces, etc) forming

hydrochloric and hydrofluoric acids, and possibly carbonyl halides.

TOXICOLOGICAL INFORMATION
Animal Data

The blend is untested.
HFC-125

Inhalation 4-hour ALC: >709,000 ppm in rats

Single high inhalation exposures caused decreased activity, labored breathing and weight loss. Cardiac
scnsitization occurred in dogs exposed to concentrations of 10-30% in air and given an intravenous
epinephrine challenge; no cardiac sensitization occurred at a concentration of 7.5%.
No animal data are available to define carcinogenic hazards. HFC-125 did not cause cmbryotoxicity or
developmental toxicity in rats or rabbits at inhalation concentrations up
(continued)

TCU 40/80 Temperature Control Unit

TOXICOLOGICAL INFORMATION (Continued)
to 50,000 ppm. HFC-126 does not produce genetic damage in bacterial or mammalian call cultures or
when tested in animals.
HFC-134a

Inhalation 4-hour LC50: 567,000 ppm in rats

A 5 or 10 second spray of vapor produced very slight eye irritation and a 24-hour occlusive application
produced slight skin irritation in rabbits. The compound is not a skin sensitizer in animals. No toxic effects
were seen in animals from exposures by inhalation to concentrations up

to 81,000 ppm. Lethargy and rapid respiration were observed at a vapor concentration of 305,000 ppm and
pulmonary congestion, edema, and central nervous system effects occurred at a vapor concentration of
750,000 ppm. Cardiac sensitization occurred in dogs at 75,000 ppm following an epinephrine challenge.
No effects in animals occurred from repeated inhalation-exposures to 99,000 ppm for two weeks or higher
concentrations to 50,000 ppm for three months. Repeated exposures to higher concentrations caused
transient tremors, incoondination and some organ weight changes. Long-term exposures produced increased
testes weights and increased urinary fluoride levels. No adverse effects were observed in male and female
rats fed diets containing 300 mg/kg/day of HFC-134a for 52 weeks. Animal testing indicates that this
compound does not have carcinogenic or mutagenic effects. Inhalation of 50 000 ppm for two years caused
an increase in benign testicular tumors in male rats. No effects were observed at lower concentrations. The
tumors were late-occurring and were judged not to be life-threatening. Embryotoxic activity has been
observed in some animal tests but only at high concentrations that were also maternally toxic.

HFC-143a
Inhalation 4-hour LC50: >540,000 ppm in rats

Single exposures by inhalation to 500,000 ppm caused anesthesia but no mortality at 540,000 ppm. Cardiac
sensitization occurred in dogs at 600,000 ppm following an intravenous challenge with epinephrine. Two, 4-week
inhalation have been conducted. In the first study, pathological changes in the testes were observed at all exposure
concentrations; no effects were observed in females. The testicular effect was considered related to the method
used to expose the rats to HFC-143a. In the second study using the same exposure concentrations, no effects were
noted in males at any concentration. Data from a 90-day study revealed no effects in male or female rats at
exposures up to 40,000 ppm. Long-term exposure caused significantly decreased body weights in male rats fed 300
(continued)

TCU 40/80 Temperature Control Unit

TOXICOLOGICAL INFORMATION (Continued)
mg/kg for 52 weeks, but there was no effect on mortality. Tests in rats demonstrated no carcinogenic
activity when administered orally 300 mg/kg/day for 52 weeks and observed for an additional 73 weeks.

Tests in bacterial cell cultures demonstrated mutagenic activity, but the compound did not induce
transformation of mammalian cells in culture or in the whole animal. Tests in animals demonstrate no
developmental toxicity.

ECOLOGICAL INFORMATION
Ecotoxicological Information
Aquatic Toxicity
HFC 143a

96-hour LC50,

rainbow trout:

>40 mg/L

DISPOSAL CONSIDERATIONS
Waste Disposal

Comply with Federal, State, and local regulations. Reclaim by distillation or remove to a permitted waste
disposal facility.

TRANSPORTATION INFORMATION
Shipping Information
D/MO
Proper Shipping Name

LIQUEFIED GAS, N.O.S.
(CONTAINS PENTAFLUORDETHANE AND
TETRAFLUOROETHANE)

Hazard Class

2.2

UN No.

1956

DOT/IMO Label

NON-FLAMMABLE GAS

Shipping Containers
Tank Cars,
Cylinders

Ton Tanks

REGULATORY INFORMATION
US Federal Regulations

TSCA Inventory Status
Reported/Included.
TITLE III HAZARD CLASSIFICATIONS SECTIONS 311,312

TCU 40/80 Temperature Control Unit

(Continued)

REGULATORY INFORMATION(Continued)
Acute:

Chronic:

Fire:

Reactivity:

Pressure:

yes

LISTS:

SARA Extremely Hazardous Substance

CERCLA Hazardous Material

SARA Toxic Chemicals

OTHER INFORMATION
NFPA, NPCA-HMIS

NPCA-HMIS Rating
Health

Flammability

Reactivity

Personal Protection rating to be supplied by user depending on use conditions.
Additional Information

HFC-125 and HFC 143a are TSCA listed, and are controlled by a TSCA Section 5 Consent Order.

The date in this Material Safety Data Sheet relates only to the specific material designated herein and does
not relate to use in combination with any other material or in any process.
Responsibility for MSDS DuPont Chemicals.
Address
Engineering & Product Safety
P. 0. Box S0709, Chestnut Run
Wilmington, DE 19880-0709
Telephone

302-999-4946

# Indicates updated section.

End of MSDS

<$#

TCU 40/80 Temperature Control Unit

NOTES:

Edwards International
EUROPE

AMERICAS

PACIFIC

UNITED KINGDOM

USA

JAPAN

Edwards High Vacuum International
Manor Royal

Edwards High Vacuum International
One Edwards Park
301 BaltardvaleSl
Wilmington, MA 01887
Tel: 508 658 5410
Fax: 508 658 7969

Nippon Edwards KK

Edwards High Vacuum International
Sierra Technology Center
Building A Suite 120
3100 Alvin Devane Boulevard
Austin, TX 78741
Tel: 512 389 3883
Fax: 512 389 3890

Nippon Edwards KK
Esaka Yodo Building 5F

Crawlcy

West Sussex RHI0 2LW
Tel: (01293)528844

Fax:(01293)533453

Shuwa Shiba Park Building A-3F
2-4-1 Shibakoen
Minato-ku
Tokyo 105

Tel: 3 5470 6530
Fax: 3 5470 6521

BELGIUM
Edwards
Bergensesteenweg 709
BI600 Sint-Pieters-Leeuw
Tel: 2 360 3671
Fax: 2 360 3591

16-34Enoki-cho

Suita-shii
Osaka 564
Tel: 6 384 7052
Fax: 6 384 7504

FRANCE

Nippon Edwards KK
508-1 Yomogi-machi
Kumamoto-shi

Edwards SA
125 Avenue Louis Roche
92238 Germevilliers. Cedex
Tel: (1)4798 2401
Fax: (1)4798 4454

Edwards High Vacuum International
550 Sycamore Drive
Milpitas,CA 95035
Tel: 408 946 4707
Fax: 408 946 8510

GERMANY

CANADA

HONG KONG

Edwards Hochvakuum GmbH
Poslfach 1 409
D3S004 Marburg
Tel: 6420 82410

Edwards High Vacuum
3375 North Service Road

Edwards High Vacuum (Pacific)
1308 Tower II
World Trade Square
123 Hoi Bun Road
Kwun Tong, Kowlocn
Hong Kong
Tel: 796 9111
Fax: 796 9095

Kumamoto 861-55

Tel: 96 326 7300
Fax: 96 326 7302

Fax: 6420 82411

Units B2/B3
Burlington
Ontario, L7N3G2
Tel: 905 336 9119
Fax: 905 845 4924

ITALY

BRAZIL

REPUBLIC OF KOREA

Edwards Alto Vuoto SpA
Via Carpaccio 35

Edwards Alto Vacuo

Songwon Edwards Ltd
Sun In Building
738-41 Panpo-Dong
Sochu Gu, Seoul
Tel: 2515 18)1
Fax:2 515 1818

20090 Trczzano SulNaviglio
Milano
Tel: 2 4840 2258
Fax: 2 4840 1638

Rua Benardo Wrona, 222
Bairro do LimSo
02710 -Sao Paulo -SP
Tel: 11 858 0377
Fax: 11 265 2766

SWITZERLAND

TAIWAN

Edwards (ECH)
Posi fiich

Zimmerman Scientific Co Ltd

CH-4l04Obrwil-Basel
Tel: 61 401 4344
Fax: 61 401 4352

EDWARDS
Edwards High Vacuum International is port of BOC Limited
The stripe symbol is a trade mark of The BOC Group

Golden Dragon Building
8FLNol27
Fu-Shin South Road
Section 1, Taipei
Tel: 2 752 7075
Fax: 2 771 9415

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