Service Manual For BBRx Haier Refrigerator HXC 358 P020140307478323461102

Haier Refrigerator HXC-608 P020140307478323461102

User Manual: Haier Refrigerator HXC-358

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Page Count: 49

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Service Manual

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BloodBankRefrigerator

HXC-158•HXC-258•HXC-358

HXC-608•HXC-608A•HYC-610

HaierMedical&LaboratoryProductsCo.,Ltd.

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FILENo.HMRSM‐002‐02

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Effective models

This service manual is effective for following models

ModelnameProductcode climate

type

Voltage(V)/

Frequency(Hz)

Plug‐type

HXC‐158BE06L7E1TST220V/50HzBritishroundplug

HXC‐158BE06L8E1TST220V/50HzEuropeanplug

HXC‐158BE06L9E1TST220V/50HzBritishflatplug

HXC‐158BBE06LA01TST220V/50HzEuropeanplug

HXC‐258BE06MAE1TST220V/50HzEuropeanplug

HXC‐258BE06M9E1TST220V/50HzBritishflatplug

HXC‐258BE06MCE1TST220V/50HzBritishroundplug

HXC‐358BE06NFE1TST220V/50HzEuropeanplug

HXC‐358BE06NDE1TST220V/50HzBritishflatplug

HXC‐358BE06NEE1TST220V/50HzBritishroundplug

HXC‐358BBE06NGE1TST220V/50HzEuropeanplug

HXC‐358BE06NJE1TST220V/60HzEuropeanplug

HXC‐608BE06PJE1TST220V/50HzEuropeanplug

HXC‐608BE06PGE1TST220V/50HzBritishflatplug

HXC‐608BE06PHE1TST220V/50HzBritishroundplug

HXC‐608BBE06PQE1TST220V/50HzEuropeanplug

HXC‐608BE06PTE1TST220V/60HzEuropeanplug

HXC‐608BE06PUE1TST115V/60HzAmericanplug

HXC‐608ABE06PKE1TT220V/50HzEuropeanplug

HXC‐608ABE06PNE1TT220V/50HzBritishflatplug

HXC‐608ABE06PME1TT220V/50HzBritishroundplug

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Content

【Designation】 ............................................................................................................................... 4

【Safe Caution】 .............................................................................................................................. 5 

【Product appearance】 ................................................................................................................... 6

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Temperature control system of blood storage refrigerator and control principles of each

component.

Color definitions of indicator lamps ............................................................................................... 10

Definitions of keys .......................................................................................................................... 11

Initial state ....................................................................................................................................... 12

Temperature adjustment and control functions ............................................................................... 13

Temperature of machine start-up and shutdown: ............................................................................ 15

Buzzing and luminotron(ALARM)flashing-alarm function: .......................................................... 16

Door-opening alarm function: ......................................................................................................... 17

Long-distance alarm function: ........................................................................................................ 18

Defrosting function: ........................................................................................................................ 19

Fan delay after ending forced defrosting ......................................................................................... 20

Treatment of sensor failure ............................................................................................................. 21

Control of inner fan: ........................................................................................................................ 22

The access rule of compressor and defrosting relays: ..................................................................... 23

Amendment of temperature display ................................................................................................ 24

Requirement for rechargeable battery circuit: ................................................................................. 25

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Technical improvement process introduction of blood refrigerator

Box structure of Haier new product blood storage refrigerator ...................................................... 33

Door Body Instructions of New Product - Blood Storage Refrigerator .......................................... 36

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Recorder Installation, Operation and Maintenance Manual

Normal Faults Analysis and Maintenance Measures ...................................................................... 47

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4

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【Designation】

Regulationsfortypenaming:

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Note:ratedvolumecanbethegrossvolumeoreffectivevolume;themanufacturer

candecideitbyhimaccordingtotheactualsituation.Theeffectivevolumevalue

mustbemarkedonthenameplatewhethereffectivevolumeorgrossvolumeis

markedintheproductname.

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Examples:

HXC‐358meansthattheBloodBankrefrigeratorwiththetemperatureat

characteristictemperature4℃,horizontalandratedeffectivevolume358L.

 HYC‐610isderivative of HXC-608, all the structures are the same, so that we write the

service manual here.

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HXC XXX X

Design No. is expressed with character sequence

B: Drawer type

Rated volume value is shown with L

Blood storage refrigerator

5

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【Safe Caution】

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1. The machine is using an AC 220V/50/60HZ power. If the voltage used is lower than

198V or higher than 242V, an auto stabilizer above 4000W shall be equipped. Power line

that required for lengthening shall be with a cross section no less than 1.5mm.

2. An independent private jack shall be used and reliably connected. The power line for

refrigerator is equipped with three-wire, grounding-type plug which meets standard

three-wire, grounding-type receptacle. In no circumstance should the third plug foot

(grounding) of the power line be cut or removed. The plug shall be touchable after

installation of refrigerator. Power line or plug with abrasion shall not be used. Abraded or

damaged power line shall be sent to maintenance point designated by the manufacturer

or be replaced by qualified personnel.

3. Hazardous articles of inflammable, explosive, materials such as acid and alkali with

strong corrosion are prohibited in the refrigerator.

4. Please don’t use flammable spray closely to avid fire.

5. When there is inflammable gas such as coal gas leakage:

● Shut the valve for leakage;

● Open the door and window for ventilation;

● Don’t pull out or insert power plug of the refrigerator.

6. Once the power of the refrigerator is cut, it shall be re-connected at least five

minutes later to avoid damage on compressor or the system. The power shall be cut for

maintenance. Do not roll or damage the power line.

7. Please wear protective equipments during accessing to the refrigerator to avoid

freezing injury. When the refrigerator is scrapped, please remove the doorman. The

scrapped refrigerator shall be away from fire and be sent to appointed site for

disposition.

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【Product appearance】

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10

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Color definitions of indicator lamps

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A. Alarm indicator lamp(red): flashing display, indicates alarm state.

B. upper temperature display indicator lamp(lime orange): when the lamp is lighting,

digital tube displays upper sensor temperature.

C. Lower temperature display indicator lamp(lime orange): when the lamp is lighting,

digital tube displays lower sensor temperature.

D. Upper and lower temperature display indicator lamps are lighting at the same time:

display the average value of upper and lower temperature sensors.

E. Power indicator lamp(red): when the lamp is lighting, indicate that it is under master

power supply state; when the lamp is flashing, it is under master power failure state.

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Definitions of keys

A. ‘Buzzing Cancel’ key: at the time of buzzing alarm, cancel buzzing;

B. ‘Temperature Change’ key: change the display temperature of digital tube；

C. ‘Alarm Test‘ key: test alarm function; each time it is pressed, the buzzer gives

out 3 sounds of 1Hz, meanwhile, alarm indicator lamp flashes for 3 times; if it is

not under long-distance hardware alarm state, long-distance alarm relay

switches off after 3s suck-shut, then determines action according to whether

alarm is needed, alarm is normal, otherwise, alarm is failure; when

rechargeable battery switch is not turned on, or battery electric quantity is low;

press Alarm Test key once, except for above functions, “E5” is flashed on

display window 3 times, 3 seconds each time.

D. More than 5 seconds ‘Sensing Selection’ key +‘Calibration Cancel’ keys:

temperature setting

E. More than 5 seconds “Temperature Conversion“+“Calibration Confirmation”

keys: amend the temperature value of each sensor.

F. More than 10 seconds “Buzzing Cancel”+“Alarm Test” keys: clear corrected

value and reset to default parameter setting.

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Initial state

The first-time power-on operation state is initial state: temperature display is the mean

temperature of upper and lower sensors, temperature gear is set at 4 ℃, control whether

starting up compressor or not according to temperature.

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Temperature adjustment and control functions

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Press ‘Sensing Selection’ key and ‘Calibration Cancel ’ key at the same time more than 5

seconds, original setting begins flashing, enter in temperature setting state; latter, each

time ‘Calibration Cancel ’ key is pressed down, temperature value adds 0.1 until reach

setting upper limit; system default is “8”, press again, then change to be setting lower

limit again, system default is “2”, each time ‘Sensing Selection’ key is pressed down,

temperature value reduces 0.1 until reach setting lower limit; system default is “2”, press

again, then change to be setting upper limit again, system default is “8”, restart again;

when the temperature value that is needed to be set appears, if there is no key operation

for more than 5 seconds, temperature setting will be saved in system, and the state of

temperature setting control will automatically exit(default temperature setting range is

2-8 ℃).

Digital window redisplays inside-box sensor temperature value or its mean temperature

value(no flash)before setting. Within 3 seconds after temperature setting is finished,

under that condition that system still does not exit the state of temperature setting control,

continue press ‘Calibration Confirmation’ key for 10 seconds, system enters in the state

of temperature range setting, firstly, display SHE, within 4 seconds, press ‘Calibration

Cancel ’ key or ”Sensing Selection” key , then it displays that temperature upper limit

can be set now, default setting is 8℃, upper limit temperature can be added by

pressing ‘Calibration Cancel ’ key again (can also make adjustment through “Sensing

Selection” key, its adjustment value is opposite to “Calibration Cancel ”), the maximum is

20℃, the minimum is SEL, 4 seconds after adjustment, system will automatically log in

the temperature setting and displays SEL, press ‘Calibration Cancel ’ key or ”Sensing

Selection” key within 4 seconds, display temperature lower limit that can be set now,

default setting is 2℃. lower limit temperature can be added (can also make adjustment

through “Sensing Selection” key, its adjustment value is opposite to “Calibration Cancel ”)

by pressing ‘Calibration Cancel ’ key again, the minimum is -5℃, the maximum is SHE,

4 seconds after adjustment, system will automatically log in the temperature lower limit

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setting and display AOF, press ‘Calibration Cancel ’ key or ”Sensing Selection” key within

4 seconds, display the value of currently controlled temperature difference, default

setting is 0.5℃, the value of temperature difference can be added by pressing

‘Calibration Cancel ’ key (can also make adjustment through “Sensing Selection” key, its

adjustment value is opposite to “Calibration Cancel ”), adjustment step value is 0.1℃ ,

the maximum is setting temperature 3, the minimum is 0.5℃. 4 seconds after adjustment,

system will automatically log in the setting temperature and display ALH, press

‘Calibration Cancel ’ key or ”Sensing Selection” key within 4 seconds, display the

temperature value of current high temperature alarm, default setting is 6℃. Lower limit

temperature can be added by pressing ‘Calibration Cancel ’ key (can also make

adjustment through “Sensing Selection” key, its adjustment value is opposite to

“Calibration Cancel ”), the maximum is 20℃, the minimum is setting temperature ALL; 4

seconds after adjustment, system will automatically log in the temperature value of high

temperature alarm, and display ALL, press ‘Calibration Cancel ’ key or ”Sensing

Selection” key within 4 seconds, display the temperature value of current low

temperature alarm, upper limit temperature can be added by pressing Calibration

Cancel ” again, the maximum is setting temperature ALH, the minimum is -5℃, (can also

make adjustment through “Sensing Selection” key, its adjustment value is opposite to

“Calibration Cancel ”, default setting is 2℃. 4 seconds after adjustment, system will

automatically log in the temperature value of low temperature alarm; if there is on

operation within 10 seconds, system automatically exit the state of temperature setting

control. Digital window redisplays inside-box sensor temperature value or its event

temperature value(no flash)before setting.

SettemperatureSHESHL

AOFALHALL

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Temperature of machine start-up and shutdown

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1.The start-up and shutdown of compressor is controlled by control sensor RT2.

Compressor start-up temperature : setting Ts)+AOF+0.5

Compressor shutdown temperature : setting(Ts)-AOF+0.5

The downtime of compressor shall not be less than 3 minutes each time.

2.After compressor has continued operation for 1 hour and not shut down, shut down it

forcedly for 5 minutes; at that time, electric heating is OFF, internal fan is

operating normally.

Each time when compressor shuts down, estimate the accumulated operation time of

compressor, if it is longer than 7 hours, shut down compressor.(at that time, electric

heating is OFF, internal fan is operating normally.) When downtime reaches 5 minutes, or

either of the temperature of upper and lower display temperatures exceeds 5.6 ℃, start

up compressor.

3.When either of the upper and lower display temperatures is lower than 2.5℃,

compressor is shut down forcedly, defrosting heater strip is power-off, internal

fan is operating normally; downtime shall not be less than 3 minutes.

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Buzzing and luminotron(ALARM)flashing-alarm function

1. Temperature requirement for over-temperature alarm: alarm temperature upper limit

ALH— when either of upper and lower display temperatures is over ALH for continuous 2

minutes, start over-temperature alarm；alarm temperature lower limit—when either of

upper and lower display temperatures is lower than ALL, start over-temperature alarm.

Meanwhile, when display temperature reaches requirement, that is, display temperature

reaches close to setting temperature, inside-box actually-measured temperature shall be

in line with display temperature.

2. Power-off alarm function: when power AC220V/110V is off, it is switched by relay,

standby rechargeable battery will provide power to CPU.

After power-off, standby rechargeable battery provides power to computer panel, start

buzzing alarm immediately; power luminotron on panel(ALARM)is flashing；display

screen window displays inside-box upper and lower sensors’ mean temperature for 1

minute, stop displaying for 2 minutes, alternately display, alarm sound can be canceled

by pressing Buzzing Cancel key, but long-distance alarm function can not be canceled.

3. Sensor failure alarm: when there is a failure in either of upper (control ) and lower

(defrosting) sensors, buzzing alarm appears.

When appearing above alarm, buzzer gives out continuous buzzing in 1Hz, the current

failure buzzing can be canceled by pressing “Buzzing Cancel” key. After 20 minutes, if

alarm state continues existing, buzzing alarm would restart until “Buzzing Cancel” key is

pressed again.

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Door-opening alarm function

when the time of door-opening is ≥600S, luminotron on panel(ALARM)is flashing, buzzer

gives out continuous buzzing in 1Hz.

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Long-distance alarm function

1. Controller is working normally; long-distance alarm relay is power-on, give out no

alarm.

2. ①There are two control sensors, con and alarm, use CON as first control, con failure,

use ALARM as control. When both of them are failure, it is control failure.

② Either of upper and lower sensors is over-temperature;

③ Either of upper and lower (control and defrosting) sensors is failure;

④ Power AC220V/110V is power-off; (hardware alarm)

⑤ Door-opening time≥600s；

When meeting one of above five items, normally-closed contact closes, start up

long-distance alarm function. (Long-distance alarm function can be realized by

connecting to an electric bell.

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Defrosting function

1. Normal defrosting function: each time compressor stops, start up defrosting

function; after compressor starts up, defrosting stops.

2. Enter in forced defrosting function: When working environment temperature is

large or there is a wet object in refrigerator, when compressor changes from

shut-down into starting-up state, temperature checked by defrosting sensor is

still ≤-5℃, at this time, start up defrosting relay(coil is power-on);

3. Exit forced defrosting: when upper and lower display temperature ≥5.6℃, or

time ≥20min, or the temperature of control sensor and alarm sensor≥7℃, exit

defrosting state, and enter in automatic normal operation.

4. Forced defrosting is at most carried out once within adjacent 24 hours. When

forced defrosting starts up, compressor and fan stop operating.

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Fan delay after ending forced defrosting

After forced defrosting, compressor starts up, after delaying for 3 minutes, fan starts

normal operation.

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21

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Treatment of sensor failure

When a sensor is open circuit or short circuit, alarm lamp on panel is flashing(1Hz),

buzzer gives out alarm.

1 Upper temperature sensor is open circuit or short circuit: display E1.

2 Lower temperature sensor is open circuit or short circuit: display E2.

3 Control sensor is open circuit or short circuit: display E3.

4 Defrosting sensor is open circuit or short circuit: display E4.

E3 display > E1 display > E2 display >E4 display >temperature display

5 When control sensor is failure, compressor is operating according to 5 minutes

starting-up and 5 minutes shut-down.

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Control of inner fan

When refrigerator door is open, inner fan stops operation; when refrigerator door is

closed, inner fan operates normally.

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23

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The access rule of compressor and defrosting relays

Three relays are accessed according to the following order: only two of them are used at

each time, one is idle, next time, another one is idle, repeat in this way again and again.

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Amendment of temperature display

Press ”Temperature Conversion” Key and “Calibration Confirmation” key at the same

time for more than 10 seconds, enter in the amendment state of temperature display, at

this time, screen displays “D1”, can circularly select the sensor that is to be amended

by press ”Sensing Selection” key again, the meaning of each code: “D1” : upper

temperature sensor, “D2” : lower temperature sensor, “D3”: control sensor, “D4”:

defrosting sensor, “D5”: alarm sensor. Press ”Sensing Selection” key to select the

sensor that is to be amended.

Press “Calibration Cancel ” key, display the current value of sensor that is to be amended,

then press “Alarm Test” key, corrected value appears, initial state is 0, the corrected

value of the sensor can be added by pressing “Calibration Cancel” key, each time

“Calibration Cancel ” key is pressed, displayed value increases 0.1 ℃; the corrected

value of the sensor can be reduced by pressing ”Sensing Selection” key, each time

“Calibration Cancel ” key is pressed, corrected value reduces 0.1 ℃; the corrected value

of sensor is ±2℃.

After the completion of temperature sensor corrected value, press “Calibration

Confirmation” key, or there is no operation within 2 seconds, display the current

corrected sensor code, then can continue selecting the sensor that is to be amended by

pressing ”Sensing Selection” key; if there is no operation within 10 seconds,

automatically save corrected value and exit the amendment state of temperature display.

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25

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Requirement for rechargeable battery circuit

(1) Rechargeable battery circuit is 8V/12V and switchable. Stitching mode: set dial

switch on master control panel. When dial switch is placed at 8V, 8V rechargeable

battery is used; When dial switch is placed at 12V, 12V rechargeable battery is used.

(2) Charge mode:

A. Use 12V rechargeable battery. When blood storage refrigerator is power-on,

check the voltage of rechargeable battery, when the voltage is lower than 11.5V,

rechargeable battery shall be charged, charging voltage is 14.2V. After charging

for 30 minutes, stop for 5 minute, check battery voltage, if it is lower than 13.2V,

continue repeating the process of charging for 30 minutes and stopping for 5

minutes until the voltage is larger than 13.2V, then stop charging. If battery has

been charged continuously for 100 hours and still fails to reach 10.8V, the

battery is broken, don’t charge it again, replace the battery with a new

one(when refrigerator is power-on again, it is defaulted as replacing battery).

B. Use 8V rechargeable battery. When blood storage refrigerator is power-on,

check the voltage of rechargeable battery, when the voltage is lower than 7.4V,

rechargeable battery shall be charged; at the time of charging, the voltage

applied on both ends of battery is 9.5V. After charging for 30 minutes, stop for 5

minute, check battery voltage, if it is lower than 9.2V, continue repeating the

process of charging for 30 minutes and stopping for 5 minutes until the voltage

is larger than 9.2V, then stop charging. If battery has been charged

continuously for 100 hours and still fails to reach 6.5V, the battery is broken,

don’t charge it again, replace the battery with a new one.

C. Rechargeable battery circuit has anti-inverse-plugging-in design. If battery

positive and negative electrodes are connected inversely, control panel buzzer

would give out a sound continuously.

When 220V power and battery switch are OFF at the same time, if solely opens battery

switch, display panel has no display; when 220V power and battery switch are connected

26

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at the same time, cut off the normal power supply of 220V power storage battery to

display panel.

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27

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Technical improvement process introduction of blood

refrigerator

Blood (drug) storage refrigerator computer panel and battery replacement and

maintenance process.

(8 V battery computer panel is replaced with a 12 v battery computer panel or battery)

1. Since June, 2009, all models of batteries of Haier blood (drug) storage refrigerator

have been replaced with 12V batteries(the production of 8V batteries was stopped),

meanwhile, corresponding control panel(new special number: 0074091548 )and

power panel(new special number: 0074091549)were changed at the same time, the

detailed replacement process is introduced as below:

1.1. Latest blood refrigerator computer panel can support 12V or 8V rechargeable

battery at the same time(there is a battery transfer switch on control panel, make

corresponding conversion according to V number of battery).

1.2. When replace Model 09 new computer panel, firstly, check machine battery is 8V or

12V, if it is 12V battery, only need to replace the computer panel that needs to be

replaced; if it is 8V battery, the power panel(special number: 0074090956) and

control panel(special number: 0074090957)on original machine need be replaced at

the same time.

Note: at the time of replacement, battery transfer switch needs to be adjusted to

corresponding position.

1.3. New power panel special number is 0074091549, new control panel special number

is 0074091548. The layout of each connecter on new computer panel and

connection method are the same as old computer panel; When replacing computer

panel, just plug each terminal into new computer panel according to original

plugging-in method.

1.4. Compared with original computer panel, a two-core connecting line is added to new

12V computer panel between master control panel and power panel(special number:

28

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0070401668).

1.5. In future maintenance, if a battery needs to be replaced due to a failure, if it is 12V

battery, may directly apply for 12 V battery replacement(special number:

0074091430)；if it is 8V battery, 12 V battery, power panel and control panel, and the

connecting wire of power panel and control panel shall be replaced at the same

time.

Note: at the time of replacement, battery transfer switch needs to be adjusted to

corresponding position.

In brief, in future maintenance course of blood (drug) storage refrigerator, if it is an

earlier-stage 8V battery machine, in case of battery failure, when can not apply for

8V battery, can apply for 12V battery replacement, meanwhile, need to apply for

replacing control panel and power panel, and convert battery switch to 12V

position; if it is any part failure of control panel or power panel, under the

condition of using original battery, firstly, apply for original parts to make

replacement, if can not obtain original parts, need to apply for replacing Model 09

control panel or power panel at the same time, battery transfer switch shall be

adjusted to corresponding position.

29



2. Introductions of original control panel and power panel and Model 09 control panel

and power pane:

Original 8V rechargeable battery blood refrigerator computer panel—control

panel:

BT1

Rechargeable battery

wire connecting

terminal: the terminal

is connected to

rechargeable battery

wire connecting

terminal( red black

wire)

DOOR SW door alarm

switch wire connecting

terminal：the terminal is

connected to door switch

wire connecting

terminal( two black wires)

CN6 long-distance

alarm terminal：the

terminal is connected

to long-distance alarm

terminal (two red

wires)

CN5 display panel control

panel wire connecting

terminal: the terminal is

connected to five-core wire

terminal in accessory.

30



Original 8V rechargeable battery blood refrigerator computer panel— power panel:

New 12V rechargeable battery blood refrigerator computer panel— power

panel(special number: 0074091549)

HTR: control defrosting

heater strip

FAN: control

inner fan

L: brown wire,

connect to junction box

live wire

N: blue wire, connect to

junction box zero wire



Three chicken claws are

connected to three terminals,

control compressor and door

heating transformer.

31



New 12V rechargeable battery blood refrigerator computer panel—control panel

(special number: 0074091548)

New 12V rechargeable battery blood refrigerator control panel power panel

connecting line(special number: 0070401668)

Replacement method: After replacing new computer panel, oppositely plug the white

line socket between control panel and display panel together, use control panel and

power panel connecting line to connect the two computer panels, other terminals are

plugged into new computer panel according to original plugging-positions on old

computer panel.

NC 8V BAT

(8v battery mark)

8V and 12V

battery

i

NC 12V BAT

(12v battery

mark)

32





Control panel

and power

panel

connecting wire

33



Box structure of Haier new product blood storage refrigerator



Take blood storage basket in blood

refrigerator out (if it is stainless steel drawer,

the drawer needs to be removed

)

,

the

Upper

sensor

Lower

sensor

Take off the covers of upper and lowe

r

sensors, expose sensor probes, remove

temperature-sensing stainless steel trim

strips and upper and lower sensors with a

screwdriver.

34



Remove the attaching clamp of control

sensor beside inner fan (the attaching

clamp fixes control sensor and alarm

sensor

Cut off the rope that fixes

defrosting sensor, remove

defrosting sensor.

Remove the screws that

fix vertical plate, take the

vertical plate out of box.

Remove the screws

that fix fan shield, take

fan shield out.

35



Rear

Left

Front

A

fter removing

screws and welded

pipe, the compressor

bottom board can be

Engine chamber inner

electrical control box,

can open from the

right side of engine

chamber, and make

th i i f l t i l

36



Door Body Instructions of New Product - Blood Storage

Refrigerator



Door body

structure: Fill

foam on all sides,

the middle is

electric

heating glass;

electric heating

of glass and

start-stop of

Outgoing lines of lower hinge

of door body are: Connecting

line of glass heating wire is

connected to the transformer

inside the cabin; connecting

line of display board is

connected to the control board

inside the electric

control system of cabin;

connecting line of lamp switch

on the door body is connected

to the ballast and null line.

Glass on the door body has

37



Recorder Installation, Operation and Maintenance Manual

1. Power Supply:

The recorder uses alternating current under normal working condition. If AC power

supply is abnormal, the recorder is equipped with backup power supply, green LED

starts to flicker, means that main power supply is out of order; otherwise green LED is

always on. The recorder has power cord or fixed transformer is connected to AC power

supply. If fixed transformer is connected to AC power supply, as shown in Fig. 6, it can be

connected to AC 115V, 50~60HZ or AC 230V, 50~60HZ main power supply.

2. Temperature Sensing Probe:

(1) Most of temperature recorders have a temperature sensing probe. If the recorder

has a temperature/humidity probe, when the recorder uses the probe, take off the

plastic cap on the temperature sensing probe; when it requires cleaning, push down

the plastic cap.

(2) If you use own temperature sensing probe, we will tell you how to install:

The recorder can accept current input (such as 4~20mA), voltage input (such as 0~1V,

0~5V, 1~5V, or 0~10V), or 100Ω resistance.

3. Notes:

(1) When the recorder is switched on, don’t touch the end of transformer. In order to

prevent electric shock hazard, before turning on the recorder, take off

the power plug. If the recorder is equipped with backup battery, disconnect 9V

battery to avoid damaging the recorder or consuming battery.

(2) 6-inch recording disk is embedded in one metal shell, recording disk on the recorder

should be fastened by four bolts, loosen the bolt, lightly move the recording disk,

microprocessor board is exposed. In addition, the recorder can fasten the recording

38



disk through tightening two bolts at upper right corner and lower right corner. Move

away two bolts and the recording disk can be turned on.

4. PC Control Panel:

J3 and J4 are external terminals, can provide at most two pens of signal input, J4 is used

to connect to the probe that provides the voltage signal for the recorder. 5V voltage is

provided for external probe.

5. Replace Recording Paper:

Press the paper changing button 3# for about one second until the recording pen starts

to move to left of paper, and then loosen the button. When the recording pen is

completely moved to outside of recording paper, counterclockwise loosen the bolt in the

middle of paper, move away recording paper, replace new paper, align the time line on

the paper and time line slot on the recording disk. Refer to Fig. 5 and confirm the time

line slot. Fasten newly the middle bolt so as to fasten recording paper. Press the paper

changing key 3# for about 1 second, the recording pen starts to move toward recording

paper. Check whether recording pen is easy to use; if it is not easy to use, adjust the

cross beam of recording pen and make the pen point contact with recording paper.

6. Recording System:

The model of pen has a multi-hole plastic ink cartridge, is fastened at the outer edge of

cross beam of metal pen. Pen cap is used to protect the recording pen during the

transportation of recording pen or the recording pen is not used. When the pen cap

should be removed, gently lift up the pen beam, take off the pen cap, lightly put the pen

in place, don’t make the pen heavily fall on the recording paper suddenly; otherwise may

damage the pen point and make the recording line on recording paper unclear. Place the

pen cap in a safe place for future use.

39



If recording pen contact is poor, lightly bend the center of cross beam of recording pen,

but don’t use too large force, only make the pen lightly contact with recording paper.

Notes: When ink of recording pen is almost used up, pen color will become shallow; it

means that recording pen should be replaced.

7. Replace Pen:

Notes: No ink recorder (for example, make use of pressure inductive recording paper)

doesn’t need to replace recording pen. The recorder have red and blue ink pens, can be

seen from red and blue pen handles; pen handles are fastened at the end of cross beam

of pen through a U-shaped clamp. For the convenience of replacement, fasten the cross

beam of pen using two bolts. Loosen the plastic U-shaped clamp, take away old pen and

change into new pen.

8. Adjust the Cross Beam of Recording Pen:

(1) In order to check and adjust the precision of recording pen, press the paper

changing key 3# until pen away from recording paper, press newly 3# key until pen

newly return to recording paper. Make the recording pen pause at the outermost

temperature line of recording paper, and then return to starting recording position. If

the pen is not paused at the above positions, it should balance the recording pen

through adjusting 1#(left)or 2#(right)arrow key.

(2) When recording pen is returned to recording paper and paused, you can adjust the

pen position within 5 seconds using 1# or 2# arrow key.

(3) For one double-pen recorder, each pen will pause at the outer edge of temperature

curve, and make an adjustment using 1# or 2# arrow key. If it is time for adjusting

the first pen, the second pen will pause at the outer edge of temperature curve;

make an adjustment at the time.

40



(4) When replaces pen or paper, make an adjustment newly according to the above

methods, otherwise the recorder error will cause incorrect recorded temperature.

9. Precision Check of Recorder:

The recorder has been precisely adjusted before leaving the factory; therefore, the

recorder should work for 24 hours before adjustment. If it really should be adjusted,

please conduct according to the following procedures. Pay attention not to place the

temperature and humidity sensors in any solution.

(1) Place a standard thermocouple in one solution bottle, together with recorder

thermocouple.

(2) If there is curve drawing on the recorder, compare the temperature on recording

paper drawn by the recording pen with temperature of thermocouple.

For double-pen recorder, compare the temperature of the second pen and temperature

of the second standard thermocouple.

(3) If it should be adjusted, calibrate using 1# or 2# arrow head, make two temperatures

consistent. Press the key for 5 seconds, recording pen starts to move.

(4) For double-pen recorder, you should first select the recording pen that requires

calibration. Press 1# key to select red pen, press 2# key to select blue pen, press 1

or 2 key until LED is off, and then operate as described in 3.

10. Backup Battery:

Green LED is always on, which means that battery and main power supply are normal;

position of LED is as shown in Fig. 5. If main power supply is out of order or electric

quantity of backup battery is insufficient, green LED will flicker, it means that main power

supply is out of order or the battery should be replaced; under the circumstances, the

recorder only can normally work 24 hours.

41



11. Fastening and Replacement of Battery:

4-inch, 6-inch and 10-inch recorders

In order to replace the battery, open the recorder door first, the battery is located in the

top right corner of recorder.

Notes: It only can be replaced by 9V alkaline battery.

12. 8-inch Recorder

Notes: When the recorder is connected to main power supply, don’t touch the

transformer terminal. In order to avoid electric shock, before replacing the battery,

disconnect the recorder from main power supply. In order to replace the battery on 8-inch

recorder, open the recorder door first, and then loosen the bolt on the right side of

recording disk, open the recording disk, the battery is fastened on the back of recording

disk. It only can be replaced by 9V alkaline battery.

13. Optional Alarm, Control Relay:

(1) Notes: When the recorder is connected to main power supply, don’t touch the

transformer terminal. In order to avoid clicking, before connecting the relay terminal,

disconnect the recorder and main power supply first. If the recorder is equipped with

backup battery, disconnect 9V battery to avoid damaging the recorder or consuming

electric quantity of battery.

(2) Temperature recording disk on 6-inch recorder embedded in metal shell is fastened

by four screws, loosen the screw, remove the recording disk, and then the relay

being fastened on the back of recorder disk is exposed. In addition, some recorders

have a recording disk with hinge, fastened by two screws in the lower part and upper

part of recording disk. Twist two screws off, and then open the recording disk with

hinge. On 8-inch recorder, one screw on the right is fastened the shell of recording

42



disk, loosen the screw, open the recording disk, the relay terminal should be

exposed. If you don’t know how to connect the relay terminal, please contact with

COBEX recorder company.

(3) The relay on the recorder is self-locking, that is to say, relay contact is off or on

(even it is not powered off) unless the recorder has the signal for changing the

contact position.

(4) The position of relay terminal blocks is as shown in Fig. 1. Notes: Red, black and

white lines have been provided as the external connection module of relay. When

the recording pen is located on the right side of control point, connection position NC

will be closed; when recording pen is located on the left side of control point, NC will

be opened.

(5) Relay current is divided into the following maximum values:

2.0 amperes at AC 30V;

0.6 ampere at AC 125V;

0.6 ampere at AC 110V

Warning: If relay current exceeds standard, it may damage the recorder.

14. Set up the Control Point of Relay:

In order to set up the recording pen’s position on recording paper, confirm the closing

time of relay contact according to the following methods:

(1) Press the paper changing key 3# until pen beam starts to move outside paper, after

a while, recording pen will move outside recording paper. When newly press the

paper changing key 3#, the recording pen moves back to recording paper, and stay

at the outermost scale mark for a short time.

(2) Recording pen will return to the position of the first control point, green LED will go

out. When the recording pen is stayed in five seconds, it is allowed to adjust the

43



control point using 1# or 2# allow key. When time for adjusting control point is 5

seconds, green LED is on, the recorder starts to work.

(3) If the recording pen has two control points, the recording pen is moved to the

second control point; it can adjust the second control point within 5 seconds. Each

pen with two control points can make use of relay closing to control the maximum

temperature and minimum temperature. After adjusting the control point for 5

seconds, LED is on; the recording pen is moved to current temperature position, the

recorder starts to work.

15. Range Selection of Recording Paper:

(1) If the temperature range of your temperature recorder is stored in the memory of

recording disk, the following conditions are suitable for you.

The temperature selection range of recorder is stored in the recorder in the manner of

program.

Notes: Recording paper must match with the temperature range of selected recorder;

otherwise the recording pen’s position above recording paper can not consistent with

measured temperature. In addition, if the recorder keeps still at the center or at the edge

of recording paper, it means that temperature range of selected recorder is abnormal.

The recorder inside has a safety protection device; when current measured temperature

is not within the selected range, the recording pen will move to the maximum

temperature.

(2) The recorder has at most 8 optional ranges, can select a suitable range according to

following methods:

After the recorder is switched on and run normally (record temperature), press the paper

changing key 3#, until recording pen is away from recording paper. When recording pen

is away from recording paper, press left arrowhead 1 or right arrowhead 2 for about 5

44



seconds, and then loosen the key. If presses 1 key, green LED will flicker once; if

presses 2 key, green LED will flicker twice. Press left arrowhead 1 key to increase

temperature range, press right arrowhead 2 key to reduce temperature range. After

completing the temperature range selection, press paper changing key 3# until recording

pen returns to recording paper, selected temperature range will be stored in the recorder

memory.

16. Specification of Recorder:

Input: Normal input voltage: Single-phase AC115/230V, normal input current:

40mA/20mA

Warning: Relay current exceeds standard, may damage the recorder.

17. Detailed Description of Recorder Installation

(1) Remove the cover plate of recorder first.

(2) Make white wiring harness of recorder pass through marked round hole.

45



(3) Remove the right side plate of cabin and cover plate of electric control box; make

white wiring harness pass through electric control box from the threading hole in the

upper right part of electric control box.

(4) Fasten three terminals on the connector bar inside the electric control box according

to the graphical position.

Detail

Drawing of

Back of

Electric

46



(5) Fasten the recorder at the removed cover plate using the screw, install the cover

plate of electric control box and right side plate of cabin.

47



Normal Faults Analysis and Maintenance Measures

Problem Cause Analysis Maintenance Measures

1. Temperature inside the

cabinet is not uniform;

temperature difference of

upper and lower part is too

big.

1. Internal fan failure Replace the fan.

2. Fan duct is blocked up by

obstacles. Remove the obstacles.

3. Door switch is broken. Replace the door switch.

4. Computer board is out of order. Replace the computer board.

2. Display

board

doesn’t

display the

value.

Display E4

1. Battery switch is not turned on or

damaged.

Turn on the switch and

replace the switch.

2. Rechargeable battery is broken. Replace the

rechargeable battery.

Display E3 3. Defrost sensor has open circuit

fault or is damaged. Repair or replace.

Display E2 4. Control sensor has open circuit

fault or is damaged. Repair or replace.

Display E1 5. Lower display sensor has open

circuit fault or is damaged. Repair or replace.

Display E0 6. Upper display sensor has open

circuit fault or is damaged. Repair or replace.

3. Refrigerator refrigeration is

poor.

1. Serious leakage of refrigerant Check the leakage and refill

the refrigerant.

2. Filth blockage of capillary or

system

Clean the capillary or replace

the filter.

4. Recorder failure

1. Record temperature is not correct. Check the recorder.

2. Recording paper can’t record

temperature.

Remove by adjusting the

recording pen.

3. After disconnecting the recorder

battery, the lamp is not on.

Check whether the upper and

lower connectors are

connected in place.

5. No alarm

1. Connection is not in place. Check the installation.

2. Control board failure Replace the control board.

48



Problem Question & Answer Measures

1. Temperature inside the

case is too high or too

low

Display temperature has a certain

relation to ambient temperature; if

temperature is too high or too low, it can

solve the problem through adjusting the

control temperature.

For the specific

operation method, see the

attached instructions.

2. Surface of external glass

door is hot.

Adopt imported electric heating external

glass door, surface heating is normal,

not out of order.

3. There is deviation

between display

temperature and

measured temperature.

Display temperature refers to the

temperature on the surface of

temperature measuring box. When

blood bank is run stably, it equals to the

surface temperature of stored blood

bag; while the thermometer measures

the air temperature inside the box at the

time, and varies within a certain range,

thus can’t correctly reflect the blood bag

temperature at the time.

4. Recorder temperature

has deviation.

Record temperature of recorder reflects

the measuring point temperature inside

the box, it is normal that it has a certain

deviation from display temperature; if

the temperature deviation at the position

measured by thermometer is very large,

it can be calibrated according to the

method introduced by the instructions.

5. There is seeper at the

bottom of box after

running for a period of

time.

If there is a small amount of seeper, it

should be periodically wiped off by a

towel. If there is a lot of seeper, check

whether the drainpipe is blocked or

drainage is smooth, unblock with a

piece of fine iron wire.

49





Inspired living

HaierMedical&LaboratoryProductsCo.,Ltd.

Room403D,BrandBuilding,HaierIndustrialPark,No.1HaierRoad

QingdaoChina



Website:www.haiermedical.com