01 30961A 1345 1HP 0130961

User Manual: 1345 - 1HP

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L
IC

OWNER’S MANUAL

C
O
N
TR
O
L

FACTORYSET

MODEL T

C2 Wiring
See pages 15 & 16
for other wiring
configurations

LOGIC CONTROL (VER. 2.0)
INDUSTRIAL DUTY DOOR OPERATOR

PATENT PENDING

The Maintenance Alert System™
allows the installer to set an internal
Maintenance Cycle Counter. An LED
on the 3-button station will signal when
the set number of cycles is reached or
when the opener requires immediate
service.

2 YEAR WARRANTY
Serial #
(located on electrical box cover)
Installation Date
Wiring Type

NOT FOR RESIDENTIAL USE

Before attempting to install, operate or maintain the operator, you must read and fully understand this
manual and follow all safety instructions.
These instructions are intended to highlight certain safety related issues. These instructions are not
intended to be comprehensive. Because each application is unique, it is the responsibility of the purchaser,
designer, installer and end user to ensure that the total door system is safe for its intended use.

TABLE OF CONTENTS
SPECIFICATIONS

EMERGENCY DISCONNECT SYSTEM

Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Motor Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Weights & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Disconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

BRAKE ADJUSTMENT
Brake Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

CLUTCH ADJUSTMENT
Clutch Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

PREPARATION
Track Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Powerhead Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Trolley Carriage/ Chain Attachment . . . . . . . . . . . . . . . . . . . . . . .4

WIRING DIAGRAMS
1
3
1
3

INSTALLATION INSTRUCTIONS
Mounting Header Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Mounting Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Operator Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Straight Arm Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

PH
PH
PH
PH

Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

STANDARD PROGRAMMING
Wiring Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 & 16
Self Monitoring Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . .16
RPM Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Maximum Run Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Maintenance Alert System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

ENTRAPMENT PROTECTION ACCESSORIES
Sensing Edges & Photo Eyes . . . . . . . . . . . . . . . . . . . . . . . . . . .7

LIMIT SWITCH ADJUSTMENT
Limit Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

OPTIONAL PROGRAMMING
Mid Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Timer to Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Red Green Warning Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Board Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

POWER & CONTROL WIRING
Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Ground Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Control Station Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Radio Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Optional Control Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Control Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .28

REPLACEMENT PARTS & MAINTENANCE
Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . .21 & 22
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Customer Service Contact Information . . . . . . . . . . . . . . . . . . .23
Electrical Box parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 & 25
Chassis Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 & 27

PACKING LIST
Before beginning your installation check that all components were supplied and received undamaged.

HARDWARE KIT (K77-13821)
PART #
01-17278
02-103L
10-10203
10-10204
10-10205
11-10130
11-10197
19-41ML
40-15259
40-55
75-10174

DESCRIPTION

QTY.

OWNERS MANUAL
3 BUTTON STATION
DOOR CURVED ARM
DOOR BRACKET
TRACK END BRACKET
PIVOT SHAFT
TAKE-UP BOLT
MASTER LINK, #41
LABEL, MAINTENANCE ALERT
LABEL, TROLLEY CAUTION
FRONT IDLER ASSEMBLY

1
1
1
1
1
1
1
2
1
2
1

PART #
DESCRIPTION
75-10214
DOOR ARM ASSEMBLY
75-10259
TRACK SPACER ASSEMBLY
75-17942
TROLLEY SLIDER
82-HN38-12
HEX BOLT, 3/8-16 X 3/4" LONG
82-HN38-16
HEX BOLT, 3/8-16 X 1" LONG
82-RN31-26
CARRIAGE BOLT, 5/16-18 X 2-1/2"
84-FN-31
FLANGE NUT, 5/16-18
84-FN-38
FLANGE NUT, 3/8-16
84-LH-38
LOCKNUT, 3/8-16
85-LS-38
LOCKWASHER, 3/8"
86-CP045-108 COTTERPIN, 9/64 X 1-1/2" LONG
2

QTY.
1
2
1
10
3
2
2
12
1
3
2

SPECIFICATIONS
ELECTRICAL
TRANSFORMER: . . . . . .24VAC Secondary
CONTROL STATION: . . .NEMA 1 three button station.
OPEN/CLOSE/STOP W/ LED
WIRING TYPE: . . . . . . . .C2 (Factory Shipped)
Momentary contact to OPEN & STOP, constant pressure
to CLOSE, open override plus wiring for sensing device
to reverse. See pages 15 thru 19 for optional wiring
types and operating modes.
LIMIT ADJUST: . . . . . . . .Linear driven, fully adjustable
screw type cams. Adjustable to 24 feet.

MOTOR
TYPE: . . . . . . . . . . . . . . . . . .Continuous duty
HORSEPOWER: . . . . . . . . .1/3, 1/2, 3/4 & 1 HP
SPEED: . . . . . . . . . . . . . . . .1725 RPM
VOLTAGE: . . . . . . . . . . . . . .115, 208-230 Single phase
230, 380, 460, 575 Three
Phase
CURRENT: . . . . . . . . . . . . . .See motor nameplate

SAFETY
DISCONNECT: . . . . . . . . . . . . .Quick disconnect door
arm for emergency manual door operation.
SAFETY PHOTO EYES (Optional): Thru beam or retro
reflective devices used to provide non-contact safety
protection. Directly interface to Lift Master CPS-L or
CPS-LN4 Commercial Protector Systems.
SAFETY EDGE (Optional): . . . Electric or pneumatic
sensing device attached to the bottom edge of door.
A REVERSING DEVICE IS STRONGLY
RECOMMENDED FOR ALL COMMERCIAL
OPERATOR INSTALLATIONS. REQUIRED WHEN THE
3 BUTTON CONTROL STATION IS OUT OF SIGHT OF
DOOR OR ANY OTHER CONTROL (AUTOMATIC OR
MANUAL) IS USED.

MECHANICAL
DRIVE REDUCTION: . . . . . . .Primary: Heavy duty (5L)
V-Belt. Secondary: #41 chain/sprocket. Output: #48
chain (1/3 &1/2HP) or #41 chain (3/4 &1HP)
OUTPUT SHAFT SPEED: . . . .140 R.P.M.
DOOR SPEED: . . . . . . . . . . . .11" - 12" per sec.
depending on door
BRAKE: . . . . . . . . . . . . . . . . . .Solenoid actuated disc
brake on 3/4 & 1HP
BEARINGS: . . . . . . . . . . . . . . .Output Shaft: Shielded
Ball Bearing. Clutch Shaft: IronCopper sintered and oil
impregnated.

WEIGHTS AND DIMENSIONS
HANGING WEIGHT:
80-110 LBS.

13-1/8"

Door Height Plus 4 feet (minimum)

4"
10-1/2"
Highest Point of Door Travel

*20-1/2"

*
3

For Units with Brake add 3-1/2"
(Standard on 3/4 & 1HP models Optional on 1/3 & 1/2HP)

OPERATOR PREPARATION
POWERHEAD ATTACHMENT
1. Position the track assembly on the frame of the
powerhead so that the motor side of operator is in back
(away from door ).

WARNING

KEEP DOOR BALANCED. STICKING OR BINDING DOORS
MUST BE REPAIRED. DOORS, DOOR SPRINGS, CABLES,
PULLEYS, BRACKETS AND THEIR HARDWARE MAY BE
UNDER EXTREME TENSION AND CAN CAUSE SERIOUS
PERSONAL INJURY OR DEATH. CALL A PROFESSIONAL
DOOR SERVICEMAN TO MOVE OR ADJUST DOOR SPRINGS
OR HARDWARE.

CAUTION

WARNING

2. Loosely install two 3/8"-16 x 3/4" bolts and nuts in third
hole from the end of the track .
3. Align the track so that the bolts inserted in step 2 line up
with the L-Slots in the frame.

TRACK ASSEMBLY
1. Using the 3/8"-16 x 3/4" bolts and flange hex nuts
supplied, assemble the operator track by installing and
tightening the track spacer brackets. Position the
spacers evenly over the length of the track.
NOTE: The nylon pad on the spacer bracket should
face up.

4. Connect the track to the powerhead by fastening two
3/8"-16 x 3/4" bolts and nuts through the frame and the
end holes in track. Tighten all four bolts to secure the
track to the powerhead.

TROLLEY CARRIAGE / CHAIN ATTACHMENT
1. Attach the take-up bolt to the trolley carriage using
3/8-16" hex nuts and lock washer, as shown below.

2. Using (2) 3/8"-16 x 1" bolts and lock washers, install the
front idler assembly to the second set of holes of one
end of the track. Refer to the illustration below.

2. Using one of the master links, attach the chain to the
other end of the trolley carriage. Reel the chain around
the front idler shaft, over the spacer brackets, back to
the drive shaft sprocket, and then to the take-up bolt on
the carriage.

3. Slide the trolley carriage onto the track so that the
take-up bolt will be toward the operator.

Front Idler Assembly

3. Using the other master link, attach the chain to the
take-up bolt and tighten to the desired chain tension.

Reel chain
around idler and
over spacer brackets

Chain Tension: With trolley positioned at either end of
the track, a properly adjusted chain will sag about 3" at the
mid-point. If necessary, remove links from the chain to
achieve
proper adjustment.
Trolley Carriage

Trolley Assembly

Spacer Bracket
(mounted nylon pad side up)

Master Link
L - Slot
Trolley Carriage

Take-up Bolt

Hex Nut
Lockwasher
Hex
Nut

Master Link
Roller Chain

Straight Arm

INSTALLATION INSTRUCTIONS
IMPORTANT NOTE: Before the operator is installed, be sure the door has been properly aligned and is working
smoothly. Although each installation will vary due to particular building characteristics, refer to the following general
procedures to install the operator.
MOUNT HEADER BRACKET
The trolley operator is generally mounted over the center
of the door. However, off center mounting may be
required due to interfering structures or location of door
stile / top section support. In such cases, the operator
may be mounted up to 24" off center on torsion spring
doors. Extension springs require center mounting.

MOUNT OPERATOR
1. Allowing the motor to rest on the floor, raise the front
end of the track assembly to the front header bracket
and fasten using the 3/8" dia. x 6.40" long pivot shaft
and cotterpins supplied.

Header Bracket

1. Locate the center of the door and mark a line on the
wall directly above the door. Extend this line up the
wall.
2. Determine the highest point of door travel. Slowly raise
the door and observe the action of the top section.
When the top section reaches its highest point, use a
level and project a line from this point to the center line
the of the door.
Carpenter’s
Level

Cotterpins

Header Wall
Pivot Shaft

High Point
of Travel

2. Swing the operator to a horizontal position above the
guide rails and temporarily secure with a suitable rope,
chain, or support from the floor. Now open garage door
slowly, being careful not to dislodge the temporary
support. Using the door as a support, place a level
against the rail and shim the operator until it is
horizontal. Make sure that the operator is aligned with
the center line of the door.

Door Travel
Projection

3. Using the projected lines for location, mount a suitable
wood block or length of angle iron to the wall above the
door opening. Refer to the illustration below. This will
provide a mounting pad for the front header bracket of
the operator. If necessary reinforce the wall with
suitable mounting brackets to ensure adequate support
of mounting pad. Using suitable hardware, mount the
(U-shaped) front header bracket to the pad.

Guide
Rails

Using the door as support, shim
operator to a horizontal position.
3.50"
1.75"

High Rise Point
Projection Line
4" MIN.

Vertical Center Line of Door

Header Bracket Drill Pattern

Operator Alignment
Operator
Alignment

INSTALLATION INSTRUCTIONS
OPERATOR SUPPORT
1. The illustration below shows a typical method of
hanging the operator from the ceiling. Each installation
may vary, but in all cases side braces should be used
for additional strength.

STRAIGHT ARM ATTACHMENT
1. Fully close the door and move the trolley slider to within
(2") two inches of the front idler.
2. Latch the straight door arm to the fixed roll pin in the
trolley carriage. Make sure the open side of notch on
the arm faces the doorway.

2. For mounting of the support brace(s) to the powerhead,
Four holes (clearance up to 3/8" bolts) are located on
each side of frame.

3. Attach the door bracket to the door arm using the
3/8"-16 x 1" bolt and nylon locking nut provided. Leave
the nut and bolt loose enough to allow the two pieces to
pivot freely.

NOTE: If the operator is longer than 15 feet, use of a midspan support is recommended.

4. Using 3/8" hardware provided, bolt the curved door arm
to the straight arm, aligning the mounting holes in such
a way that the door bracket pivot bolt will be in line with
the top rollers on the door.
5. Position the door bracket to the center line on the door.
Using suitable hardware, attach the door bracket to the
door. Many installations, except solid wood doors, will
require additional support for the door. Refer to the
illustration below.

WARNING

FAILURE TO SUSPEND THE OPERATOR SECURELY MAY
RESULT IN SERIOUS PERSONAL INJURY OR DEATH,
AND/OR PROPERTY DAMAGE.

CAUTION

WARNING
IMPORTANT NOTE: At this time, ensure all bolts and lag
screws are properly secured.

Top
Roller

Mid-Span
Support Brace

Straight Arm
Center Line of Door
Door Bracket
Curved
Door Arm

Powerhead Support Brace
Pivot Bolt

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
PHOTO EYES & SENSING EDGES
Sensing devices supplied for door industry type operators
with an isolated normally open (N.O.) dry contact output
are compatible with your operator. This includes
pneumatic and electric edges, and through beam and retro
reflective photo eyes. If your door does not have bottom
safety photo eyes or a sensing edge and you wish to add
a safety device to your application, please contact your
local LiftMaster Authorized Dealer.
If not pre-installed by the door manufacturer, mount the
sensing edge on the door according to the instructions
provided with the edge. The sensing edge may be
electrically connected by either coiled cord or take-up reel.
Important Notes:
a. Proceed with Limit Switch Adjustments before making
any sensing edge wiring connections to operator as
described below.
b. Electrician must hardwire the junction box to the
operator electrical box in accordance with local codes.

NOTICE
It is strongly recommended that a SAFETY PHOTO EYE OR
SENSING EDGE BE USED IN CONJUNCTION WITH THE
OPERATOR.
WIRING:
For wiring of your sensing device to the operator, refer to
the wiring diagrams supplied on pages 13 and 14. See
field connection terminals identified as Reversing Device.
TAKE-UP REEL: Take-up reel should be installed 12"
above the top of the door.
COIL CORD: Connect operator end of coil cord to
junction box (not supplied) fastened to the wall
approximately halfway up the door opening.

LIMIT SWITCH ADJUSTMENT
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.
1. To adjust limit nuts depress retaining plate to allow nut
to spin freely. After adjustment, release plate and
ensure it seats fully in slots of both nuts.
2. To increase door travel, spin nut away from actuator.
To decrease door travel, spin limit nut toward actuator.
3. Adjust open limit nut so that door will stop in open
position with the bottom of the door even with top of
door opening.
4. Repeat Steps 1 and 2 for close cycle. Adjust close limit
nut so that actuator is engaged as door fully seats at
the floor.

WARNING
TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM
ELECTROCUTION, DISCONNECT ELECTRIC POWER BEFORE
MANUALLY MOVING LIMIT NUTS.

CAUTION

If other problems persist, call our toll-free number for
assistance: 1-800-528-2806.

OPEN Limit Switch

CLOSE Limit Switch

Actuator

Retaining Plate

(Aux. Open) Limit Switch

SAFETY

INSTALL POWER WIRING & CONTROL STATION
Before installing power wiring or control stations be sure to follow all specifications and warnings described
below. Failure to do so may result in severe injury to persons and/or damage to operator.
The operator electrical box is only to be accessed by trained “LIFTMASTER” technicians. If service is
required contact your local LIFTMASTER dealer.
Do not install any wiring or attempt to run the operator without consulting the wiring diagram. Install the
optional Reversing Edge before proceeding with the Control Station installation.

Remove the cover from the electrical enclosure. Inside this enclosure you will find the wiring diagram(s) for
your unit. Refer to the diagram (glued on the inside of the cover) for all connections described below. If this
diagram is missing, call the number on the back of this manual. DO NOT INSTALL ANY WIRING OR
ATTEMPT TO RUN THIS OPERATOR WITHOUT CONSULTING THE WIRING DIAGRAM.

IMPORTANT SAFETY NOTES

WARNING
WARNING

INSTALL THE CONTROL STATION IN LINE OF SIGHT WITH
THE DOOR, BUT AWAY FROM THE DOOR AND ITS
HARDWARE. IF CONTROL STATION CANNOT BE INSTALLED
WHERE DOOR IS VISIBLE, OR IF ANY DEVICE OTHER THAN
THE CONTROL STATION IS USED TO ACTIVATE THE DOOR, A
REVERSING DEVICE MUST BE INSTALLED ON THE BOTTOM
OF THE DOOR. FAILURE TO INSTALL A REVERSING DEVICE
UNDER THESE CIRCUMSTANCES MAY RESULT IN SERIOUS
INJURY OR DEATH.

ANY MAINTENANCE TO THE OPERATOR OR IN THE AREA
NEAR THE OPERATOR MUST NOT BE PERFORMED UNTIL
DISCONNECTING THE ELECTRICAL POWER AND LOCKINGOUT THE POWER VIA, THE MAIN DISCONNECT SWITCH.
UPON COMPLETION OF MAINTENANCE THE AREA MUST BE
CLEARED AND SECURED, AT THAT TIME THE UNIT MAY BE
RETURNED TO SERVICE.

CAUTION
CAUTION

WARNING
WARNING

TO AVOID DAMAGE TO DOOR AND OPERATOR, MAKE ALL
DOOR LOCKS INOPERATIVE. SECURE LOCK(S) IN "OPEN"
POSITION.
IF THE DOOR LOCK NEEDS TO REMAIN FUNCTIONAL,
INSTALL AN INTERLOCK SWITCH.

DISCONNECT POWER AT THE FUSE BOX BEFORE
PROCEEDING.
OPERATOR MUST BE PROPERLY GROUNDED AND
CONNECTED IN ACCORDANCE WITH LOCAL ELECTRICAL
CODES. NOTE: THE OPERATOR SHOULD BE ON A SEPARATE
FUSED LINE OF ADEQUATE CAPACITY.
ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A
QUALIFIED ELECTRICIAN.

CAUTION
CAUTION

WARNING
WARNING

INSTALL POWER WIRING & CONTROL STATION (CONT’D)

ON THREE PHASE MACHINES ONLY:
Incorrect phasing of the power supply will cause the motor
to rotate in the wrong direction.

GROUND WIRING
1. Connect earth ground to the chassis ground screw in
the electrical box enclosure marked with the label
shown below.

40-10033B

2. Use same conduit entry into the electrical box as the
power wiring.
IMPORTANT: THIS UNIT MUST BE PROPERLY
GROUNDED. FAILURE TO PROPERLY GROUND THIS
UNIT COULD RESULT IN ELECTRIC SHOCK AND
SERIOUS INJURY.

13 24AC-

12 24AC+

11 CMN

10 DIAG

9 IR

8 REV

7 OPEN

6 CLOSE

5 STOP

4 CMN

1
SBC
SINGLE BUTTON CONTROL
2 2
INTERLOCK
3 3
INTERLOCK
4
CMN
COMMON
5
STOP
STOP
6
CLOSE
CLOSE
7
OPEN
OPEN
8
REV
REVERSE
9
IR
INFRARED PHOTO EYES
10 MAS
MAINTENANCE ALERT SYSTEM
11 CMN
COMMON
12 24AC+
24 VOLT AC
13 24AC24 VOLT AC
2. Be sure to run all control wires through the conduit hole
in the electrical box enclosure marked with the label
shown below.

2. Be sure to run all power wires through the conduit hole
in the electrical box enclosure marked with the label
shown below.

CONTROL WIRING CONNECTIONS
1. Connect control wires to the TB1 terminal block located
on the Printed Circuit Board (shown below).

1 SBC

POWER WIRING CONNECTIONS
1. Connect power wires coming from the main to the
captive terminal block in the electrical box enclosure
marked with the label shown below.

3. Apply power to the operator. Press OPEN push button
and observe direction of door travel and then Press the
STOP button.
If door did not move in the correct direction, check for
improper wiring at the control station or between operator
and control station.

RADIO CONTROLS
On all models with B2 control wiring, a terminal bracket
marked R1 R2 R3 is located on the outside of the
electrical enclosure. Any commercial type LiftMaster
brand receiver may be mounted to this bracket. The
operator will then open a fully closed door, close a fully
open door, stop an opening door, and reverse a closing
door from the radio transmitter. In TS control wiring the
operator will only open the door or reset the timer to close.
However, for additional door control from a 3-button
transmitter, a commercial three-channel radio receiver
(with connections for OPEN/CLOSE/STOP) is
recommended.

OR IN THE AREA NEAR THE OPERATOR MUST
NOT BE PERFORMED UNTIL DISCONNECTING
THE ELECTRICAL POWER AND LOCKING-OUT
THE POWER VIA, THE MAIN DISCONNECT
SWITCH. UPON COMPLETION OF
MAINTENANCE THE AREA MUST BE CLEARED
AND SECURED, AT THAT TIME THE UNIT MAY
BE RETURNED TO SERVICE.

Control
Station
Optional
Controls

4 Feet
Approximate

Maintenance Alert
System™
If light is Flashing
it is time for routine
Door and Opener
Maintenance.
If light is Steady On,
call for immediate
service.

MOUNTING INSTRUCTIONS
1. Mount Control Stations no further than (12") from each
other.
2. Mount Control Stations (12") from the door enclosure.
3. Mount WARNING NOTICE beside or below the Control
Station.
4. Mount MAINTENANCE ALERT label to either side of
control station.

Service every
_______ cycles.

EMERGENCY DISCONNECT SYSTEM

WARNING

Door arm is released from trolley when emergency disconnect
opens.
To avoid being struck by door arm, do not stand under the
rope or door arm when pulling the emergency release.

CAUTION

Header
Bracket

WARNING

Trolley
Track

Clevis
Pin
Chain

Emergency
Disconnect
Straight
Door Arm
Assembly
Door
Bracket

Door

Curved
Door Arm

NOT
ICE

Emergency
Release
Handle

TO DISCONNECT DOOR FROM OPENER

TO RECONNECT DOOR ARM TO TROLLEY

Emergency
Disconnect

Door Arm

Emergency
Disconnect

Pull emergency
release handle
straight down.
Emergency disconnect
will open.

Door Arm

Lift free end of
door arm to trolley.
Pull emergency handle
to allow arm to engage
roll pin. Release handle.
Emergency disconnect
will close.

BRAKE ADJUSTMENT
A solenoid brake is standard on 3/4 and 1 horsepower models, and is optional on 1/3 and 1/2 horsepower models. The
brake is adjusted at the factory and should not need additional adjustment for the the life of the friction pad.

Solenoid Brake System

Replace friction pads when necessary. Refer to the
illustration for identification of components for the solenoid
type brake system.

Friction Pads

Plate Assembly
Solenoid
Release Lever

CLUTCH ADJUSTMENT & AUXILIARY REVERSAL SYSTEM

1. Remove cotterpin from nut on the clutch shaft.
Adjusting Nut

2. Back off clutch nut until there is very little tension on the
clutch spring.

Clutch Pad

Spring
Clutch Plate

3. Tighten clutch nut gradually until there is just enough
tension to permit the operator to move the door
smoothly but to allow the clutch to slip if the door is
obstructed. When the clutch is properly adjusted, it
should generally be possible to stop the door by hand
during travel.

Cotterpin

Washer

Clutch Pulley

4. Reinstall Cotterpin.
The Auxiliary Reversal System works in tandem with the
adjustable clutch to detect if a closing door meets an
obstruction. If an obstruction is met and causes the clutch
to slip, the Auxiliary Reversal System will return the door
to the full open position. The Auxiliary Reversal System is
designed to protect the door and motorized operator. It is
not intended as a replacement for a safety sensing device,
nor will it work for sectional doors when a jackshaft
operator is used.

STANDARD POWER & CONTROL CONNECTION DIAGRAM
Logic Control Board (VER. 2.0) - 115V, 208, 230V, 1Ph

Logic Control Board (VER. 2.0) - 115V, 208, 230V, 1Ph

Logic Control Board (VER. 2.0) - 208, 230V, 380V, 460V, 3Ph

LOGIC CONTROL (VER. 2.0) 1 PHASE WIRING DIAGRAM

10120-1

INTERNAL MOTOR
WIRING
T1 - BLUE
T2 - WHITE
T3 - ORANGE
T4 - YELLOW
T5 - BLACK
T8 - RED
O/L- BROWN

(BL/BK)

NOTE:
CONTACTOR 1PH / 3 PH JUMPER
SHOULD BE IN 1 PH POSITION

(BL/BK)

(SEE NOTE 4)

(BL/BK)

(SEE NOTE 4)

(BL/BK)

(SEE
NOTE 4)
(BL/BK)

(SEE NOTE 2)

(SEE NOTE 4)

(SEE NOTE 3)
NOTES:
1) SEE OWNER'S MANUAL FOR DIP SWITCH FUNCTIONS AND PROGRAMMING PROCEDURES.
2) TO REVERSE MOTOR DIRECTION
115 VOLTS: ALWAYS EXCHANGE PURPLE AND GREY ALL VOLTS & PHASES.
230 VOLTS: INTERCHANGE PURPLE (E10) & GREY (E15) WIRES AT LOGIC BOARD.
3) TRANSFORMER PRIMARY VOLTAGE SAME AS LINE VOLTAGE.
4) SINGLE PHASE UNITS ARE EQUIPPED WITH AN EXTERNAL LINE
BREAK DEVICE, AND MAY BE EQUIPPED WITH AN ADDITIONAL
INTERNAL PILOT DUTY THERMAL O/L DEVICE.

LOGIC CONTROL (VER. 2.0) 3 PHASE WIRING DIAGRAM

10120-3
(BL/BK)

*
(BL/BK)

380/460 VOLT MOTOR CONNECTION

MOTOR O/L LEAD
COLOR BROWN

(BL/BK)

*
(BL/BK)

208/ 230 VOLT MOTOR CONNECTION

(SEE
NOTE 4)

(SEE NOTE 4)

EXTERNAL

(SEE NOTE 4)

(SEE NOTE 3)

NOTES:
1) SEE OWNER'S MANUAL FOR DIP SWITCH FUNCTIONS AND PROGRAMMING PROCEDURES.
2) TO REVERSE MOTOR DIRECTION: INTERCHANGE ANY 2 OF THE 3 POWER WIRES AT L1, L2 & L3,
OR EXCHANGE PURPLE (E17) & GREY (E16) WIRES AT LOGIC BOARD.
3) TRANSFORMER PRIMARY VOLTAGE SAME AS LINE VOLTAGE.
4) THREE PHASE UNITS MAY BE EQUIPPED WITH AN INTERNAL PILOT DUTY
THERMAL OVERLOAD DEVICE, OR AN EXTERNAL LINE MONITORING DEVICE.

Refer to printed circuit board illustration on page 20 for all component locations.
Before Programming the logic board, set the operators open and close limits. LEDs on the logic board
are provided to assist setting the limits. As each limit is activated the corresponding LED will light up. The
abbreviations are Open Limit Switch (OLS), Close Limit Switch (CLS) and Sensing Limit Switch (SLS).
Refer to page 7 for limit switch adjustment instructions.
Logic Control Pushbuttons Open, Close, Stop
Open, Close and Stop buttons are mounted directly on the Logic Control board. This will provide easy
programming ability and door control at the electrical box. Either the stop control or a jumper must be wired between
terminals 4 and 5 for the on board push buttons to function.

WIRING TYPE PROGRAM SETTINGS
Determine wiring mode:
There are many wiring modes available on the Logic Board. Read the descriptions of the different wiring types to
determine which setting will be correct for each application.
Set the dip switches to the desired wiring mode:
Adjust the 4 dip switches on the logic board to match the settings for the desired wiring type. The dip switches are
shown in the picture.
TYPE

STATION

C2
Function:

B2
Function:

D1
Function:

3 Button, 3 Button Radio Control
Momentary contact to open and stop with constant pressure to
close, open override plus wiring for sensing device to reverse.
Programmable mid stop available with this wiring type.
3 Button, 1 Button, 1 & 3 Button Radio Control
Momentary contact to open, close and stop, plus wiring for
sensing device to reverse and auxiliary devices to open and close
with open override. Programmable mid stop available with this
wiring type.

C2
1

OFF
ON
ON
B2
1

OFF
ON

2 Button, 3 Button Radio Control
Constant pressure to open and close with wiring for sensing
device to stop.

ON
D1

E2
Function:

3 Button Radio Control
Momentary contact to open with override and constant pressure
to close. Release of close button will cause door to reverse (rollback feature) plus wiring for sensing device to reverse.

OFF
ON
ON

TS
Function:

3 Button, 1 Button, 1 & 3 Button Radio Control
Momentary contact to open, close, and stop with open override
and Timer To Close. Every device that causes door to open,
including a reversing device, activates the Timer To Close.
Auxiliary controls can be connected to open input to activate the
Timer To Close. If the timer has been activated, the open button
and radio control can recycle the timer. The stop button will
deactivate the Timer To Close until the next command input. The
Timer To Close will function from the programmable mid-stop with
this wiring type. (NOTE: Requires Optional self monitoring
photo eyes to operate.)

E2
1

OFF
ON
ON
TS
1

OFF
15

WIRING TYPE PROGRAM SETTINGS CONT’D
TYPE

STATION

T
Function:

3 Button, 1 Button, 1 & 3 Button Radio Control
Momentary contact to open, close, and stop, with open override and
Timer To Close. Every device that causes the door to open, except a
reversing device, activates the Timer To Close. Auxiliary controls can
be connected to open input to activate the Timer To Close. If the Timer
To Close has been activated, the open button and radio control can
recycle the timer. The stop button will deactivate the timer until the next
command input. The Timer to Close will function from the
programmable mid-stop with this wiring type. (NOTE: Requires
Optional self monitoring photo eyes to operate.)

ON
ON
T
1

C2 Failsafe

B2 Failsafe

Momentary button contact for open, close and stop. Radio controls
allowing open, close and stop. User set midstop. User set Timer To
Close. The single button station opens the door to the full open limit
bypassing the mid stop and activates the Timer To Close, putting the
operator in TS mode until the door reaches the down limit, or is
stopped in travel. At which time the operator enters the B2 mode.
(NOTE: Requires Optional self monitoring photo eyes to operate.)
3 Button, 3 Button RadioControl
Same functions as C2. Self Monitoring safety device must be installed
to operate door. See Self Monitoring Safety Device Options below.

OFF
ON
ON
FSTS
1

FSTS

OFF
ON
ON
C2
FAIL
SAFE
1

OFF
ON
ON
B2
FAIL
SAFE
1

3 Button, 1 Button, 1 & 3 Button Radio Control
Same functions as B2. Self Monitoring safety device must be installed
to operate door. See Self Monitoring Safety Device Options below.

OFF
ON
ON

D1 Failsafe

E2 Failsafe

2 Button, 3 Button Radio Control
Same functions as D1. Self Monitoring safety device must be installed
to operate door. See Self Monitoring Safety Device Options below.
2 Button, 3 Button Radio Control
Same functions as E2. Self Monitoring safety device must be installed
to operate door. See Self Monitoring Safety Device Options below.

D1
FAIL
SAFE
1

OFF
ON
ON
E2
FAIL
SAFE
1

OFF

SELF MONITORING SAFETY DEVICE OPTIONS
To use the operator in any of the Failsafe wiring modes, or Timer To Close wiring modes (TS, T, FSTS), a LiftMaster self
monitoring safety device must be installed.
Recommended LiftMaster Self Monitoring Safety Devices:
CPS-L
NEMA 1 Direct Connect Eyes
CPS-LN4 NEMA 4 Direct Connect Eyes
NOTE:
1. External interlocks may be used with all functional modes.
2. Auxiliary devices are any devices that have only dry contacts. Examples are: photocell, loop detector, pneumatic or
electrical treadles, radio controls, one button stations, pull cords, etc.
3. Open override means that the door may be reversed while closing by activating an opening device without the need
to use the stop button first.
16

STANDARD PROGRAMMING FEATURES
RPM Sensor/Auxiliary Reversal System (Programming is Recommended)
Feature:

Benefit:

By programming the RPM sensor to a specific application, the logic
board learns the speed the door travels with reference to the spinning
motor. This sensor activates the start winding and recognizes clutch
slippage.
By removing the centrifugal start switch from 1/3 and 1/2 horsepower
single-phase motors the leading cause of motor failure is eliminated.
The auxiliary reversing benefits of the RPM sensor are designed to
prevent excessive door and operator damage upon hitting a solid
obstruction. LiftMaster recommends the use of safety devices for
primary safety protection.

To
1.
2.
3.

Program:
The open and close limits must be set before setting the RPM sensor.
Start with the door closed and turn all dip-switches to the off position.
Press open then press and hold the “learn” button on the Logic board until the
door reaches the full open position. You should see the Learn LED turn off
after pressing the learn button; it will turn back on about 5 seconds later. If the
LED did not cycle, start over and wait about 1/4 to 1/2 second between
pressing “open” and “learn.”
4. Return the dip switches to your regular wiring type (C2, B2, etc.) and close the
door.
Note: LiftMaster 2.0 Logic operators are designed to work in most cases without
adjusting the RPM sensor. It is still recommended to set this feature on every
installation. This feature will need to be reset if the motor or logic board is ever
replaced.

ON
ON

Maximum Run Timer (Setting is Recommended)
Feature:

Benefit:

SET
MAX RUN
TIMER

The door will run in one direction for a set amount of time. Default time
is 90 seconds. Installer can adjust the 90 second timer to the open
cycle plus 10 seconds.
Should the door hit an obstruction that is not detected by a sensor, it
will stop after the programmed amount of time and not continue to drive
into the obstruction. This may help prevent prolonged human
entrapment as well as help prevent damage to the door and operator .

To Program:
1. Start with the door closed and the limits set.
2. Set the dip switches to "set Max Run Timer".
3. Press Open and wait for the door to reach the full open limit.
4. Return the dip switches to the desired wiring type (C2, B2, etc.) and Close the
door. The Maximum Run Timer is now set and will allow the door to move in one
direction no more than 10 seconds longer than it normally takes to travel from
close to open.
Example: If it takes the door 13 seconds to open normally, the operator will stop
running after 23 seconds. If the Max Run Timer is not programmed, it will run for
90 seconds total in either direction.
Note: For very large, slow moving doors, where the normal travel time is close to
90 seconds setting the MRT is essential to move the door the full travel distance.
17

OFF

STANDARD PROGRAMMING FEATURES CONT’D
Press This

MAS (Maintenance Alert System)
Feature:

Benefit:

An internal cycle counter will activate a flashing LED on the
three-button control station when the preset number of cycles is
reached. Setting this feature is optional. By default, this feature will
never activate.
The consumer will be aware of when it is time for a scheduled
maintenance on the door or operator.

To
1.
2.
3.
4.

Program:
Close the door.
Set the dip switches to “set Maintenance Alert System”
Press “close” to zero out the counter.
Press “open” for every 5,000 cycles the operator should wait before
flashing the LED.
5. Return the dip switches to your regular wiring type (C2, B2, etc.) and close
the door.

To Get This
Adds 5,000 cycles to
Maintenance Alert
System Activation
Counter.
Clears memory, sets
Maintenance Alert
System Activation
Counter to 0 cycles.
Adds 10,000 cycles
to Maintenance Alert
System Activation
Timer.

Open

Stop

ON
ON
MAINTENANCE
ALERT
SYSTEM
1

OFF

EXAMPLE: The door is being installed with 30 thousand cycle springs. To set
the MAS for 30,000 cycles press close, then open 6 times. Return the dip
switches to the desired wiring type.
Special Notes about the MAS: A 5th wire must be run to the control station to
activate the MAS LED. When the operator is serviced after the MAS has started
the LED flashing, repeat the setup procedure for the next service visit. To see
how many cycles the operator has been through set the dip switches to “set
MAS” and watch the MAS led. It will flash once for every 1000 cycles the
operator has been used then pause and repeat. Every time the operator leaves
the close limit is counted as one cycle.

Maintenance
Alert LED

OPTIONAL PROGRAMMING FEATURES
Mid Stop

ON
Feature:
Benefit:

Door will open to an installer set height that is less than fully open.
The door will not open fully which will reduce unwanted airflow
through the doorway. The door will not cycle fully providing longer
door and operator life.

To Program:
1. Close the door.
2. Set dip switches to “set mid stop.”
3. Press open (the door will begin moving)
4. Press stop when the desired mid stop height is reached.
5. Return the dip switches to the desired wiring type (C2,B2,etc.). The door will
now stop at this height every time the door is opened.
Notes: A momentary open command will open the door fully from the mid stop
position. Photo eyes and other safety devices will not further open the door from
the mid stop position. Timer To Close will work from the mid stop position.

ON
SET
MIDSTOP
1

OFF

OPTIONAL PROGRAMMING FEATURES CONT’D
Timer To Close

ON
ON

Feature:

Installer can set a timer to automatically close after a preset amount
of time once all safety devices are unobstructed.
Benefits: Door will automatically close after being used. Extremely convenient
where users may not be concerned with closing the door. For
example Apartment Buildings and Fire Stations.

SET
TIMER
TO CLOSE
1

OFF

Requirements: Must have at least one of the following safety devices
attached: CPS-L, CPS-LN4, CPSII, CPSII-N4. When running, the dip switches
must be set for TS, T, or FSTS
Press This
To Program:
1. Close the door.
2. Set dip switches to “Set Timer To Close”
3. Press “close” to zero out the timer.
4. Press “open” for every 5 seconds seconds the operator should wait before
attempting to close the door.

Open

Example: The door is supposed to close 30 seconds after the user drives
through. To set the TTC for 30 seconds press close, then open 6 times.
Stop

Return the dip switches to the desired wiring type. TS, T, or FSTS

Notes: For longer delay time settings, use the Single Button Control (terminal
1) to add 1 minute at a time. To deactivate the timer press stop. The timer will
be reactivated on the next operation command.
Reminders: FSTS wiring mode allows the Timer To Close to be activated by
the Single Button Control (terminal 1) only. T wiring mode allows the door to
attempt to close only one time for safety purposes.

Single Button
Control

To Get This
Adds 5 seconds to
countdown timer.
Resets the timer to
close to 0 seconds.
Turns off electronic
search for photo eyes
after photo eyes have
been intentionally
removed.
Adds 5 seconds to
“Red warning light
before closing” time.
Adds 60 seconds to
countdown timer.

Adjusting your red/green warning lights
Feature:
Benefit:

The logic board can adjust the amount of time that a warning light will flash before the Timer To Close will
activate the door to close.
Advanced warning of door closure helps prevent traffic collisions with the door.

To Program:
1. Set the dip switches to “Set Timer To Close”
2. Press stop for every additional 5 seconds of
pre-movement warning.
3. Return the dip switches to the desired wiring type.
Requirements: Must have the Logic 2 red green warning light kit #001A4730 and must have at least one of the
following safety devices attached: CPS-L, CPS-LN4, CPSII, CPSII-N4. When running, the dip switches must be set for
TS, T, or FSTS. See red/green warning light instructions for further details.

LOGIC 2.0

PCB BOARD ILLUSTRATION

RPM Learn
Button

(see page 16)

Power Wiring
Terminal Block
(see pages 8-9)

Control Wiring
Terminal Block
(see pages 8-9)

Dip Switch
Open, Close, Stop Buttons

(see pages 8-9)

TROUBLE SHOOTING
TROUBLESHOOTING GUIDE

SYMPTOM

PROBABLE CAUSE
RPM sensor is not adjusted
correctly.

Reset the RPM sensor. Also
verify that the software is
version 260 or better.
Order replacement chips from
Parts and Service.

The Maximum run timer is not
set correctly.

Reset the Maximum Run Timer

There may be a Mid Stop set.

Reset the mid-stop by
programming it to be at the open
limit.

a) The Photo Eyes, edge or
other sensing device is
obstructed or activated.
b) The Logic board thinks that
the direct connect photo eyes
are attached and blocked

a) Remove the obstruction,
check the safety device wires
for continuity and shorts.
b) Unlearn the photo eyes
from the memory (see clear
memory section). Also
verify that the Logic Board
Chip is Version 260 or
better. Order replacement
Chips from Parts and Service.

The operator will not respond to
any commands

a) Operator control station is
wired wrong
b) Motor is malfunctioning

a) Use the LEDs to help check
correct wiring (see
Diagnostic procedure) Verify
that the board is accepting
commands by using the
onboard control station.
b) Verify voltage getting to the
motor.

Clearing The Memory 3 - steps
STEP 1: To reset most of the user installed settings back to factory defaults:
1. Turn all the dip switches ON.
2. Press and hold the Learn button about 5 seconds.
3. The Learn LED will turn off while you hold the button down and turn back on
about 5 seconds later.
4. Return the dip switches to the desired wiring type.
Note:

RESOLUTION

Each open command will open
the door about a foot and a half
then stop, after reaching the open
limit each close command will
close the door about a foot and a
half then reverses back to full
open.
The door will open some but not
completely. And the door will
close some and not completely.
Extra commands are able to get
the door to move completely
The door will open some but not
completely. An extra open
command is able to get the door
to open completely
The door will open but will only
close after a 5 second delay with
constant pressure on the close
button.

A. The Max Run Timer is now set to 90 seconds
B. The Timer To Close is now set to 0 seconds
C. The Mid Stop is now deactivated
D. The Maintenance Alert System is now deactivated

Note: To clear the Mid Stop only Set/Program the Mid Stop at the open limit.
The logic board understands this to mean that no mid stop is desired.

TROUBLE SHOOTING
STEP 2: To “unlearn” the photo eyes.
The latest software automatically learns if direct connect photo eyes (CPS-L or CPS-LN4) are attached during the first
open cycle of operation. If they are disconnected at some point after this, they must be unlearned.
1.
2.
3.

Set the dip switches to set Timer To Close.
Press Open 2 times then Close 2 times and then Stop 2 times (order is not specific).
Return the dip switches to the desired wiring type.

STEP 3: Relearn RPM.
Because factory default is set without a door attached to the operator, factory default setting is not a preferred status.
1.
2.

Start with the door closed and set all Dip switches to the off position.
Press open then press and hold the “learn” button on the Logic board (see picture) until the door reaches the full
open position. You should see the Learn LED turn off after pressing the learn button; it will turn back on about 5
seconds later. If the LED did not cycle, start over and wait about 1/4 to 1/2 second between pressing “open” and
“learn.”
Return the dip switches to your regular wiring mode and close the door.

Diagnostic LED
There should always be 3 green LEDs activated (24Vac, 5 VDC, and STOP Button). Check for this first then proceed to
check the status of the remaining LEDs
ORDER
1
2
11
10

LED
24Vac
5VDC
Diag
REV

COLOR
Green
Green
Red
Red

MEANING OF EACH LED
Indicates that 24 VAC is being received from the transformer
Indicates that 5VDC is being generated for the logic board to use
Indicates that the MAS LED on the 3 button control station is being turned on.
Indicates a short between common and terminal 8. Pressing the edge should turn ON this LED

4
5

Open
Close

Red
Red

Indicates a short between common and terminal 7. Pressing the open button should turn ON this LED
Indicates a short between common and terminal 6. Pressing the close button should turn ON this LED

Stop

Green

Indicates a short between Common and terminal 5. Pressing the stop button should turn OFF this LED.

SBC

Red

7
8
9
12

OLS
CLS
SLS
Learn

Red
Red
Red
Amber

Indicates a short between Common and terminal 1. Pressing the Single Button
Control station should turn ON this LED.
Indicates the Open Limit Switch being pressed
Indicates the Close Limit Switch being pressed
Indicates the Sensing Limit Switch being pressed
This LED is normally on and in Diagnostic mode (all dip switches on) this LED
will flash to indicate the chip is OK.

Diagnostic Checklist Procedure
1. Look for the 3 Green LEDs
A. If the 24Vac light is out, check the transformer and any interlock switches, then replace either the transformer or
the logic board.
B. If the 5 VDC light is out, and the 24Vac is lit, replace the board.
C. If the Stop Button light is out, check the wiring to the control station, if the site does not require a stop button use
a jumper across terminals 4 and 5. If the LED is still not lit call for more assistance.
2. Check your control station:
A. Place the operator into diagnostic mode (all DIP switches ON)
B. Watch the LEDs as each control button is pressed. The LEDs should light with each Open, Close, and Single
Button Control command. The Stop should turn off the LED.
3. Activate the limit switches to verify functionality. Also watch the LEDs during door travel to check for over active limit
switches.
4. Disconnect all devices and reattach them one at a time testing for failure after each item is replaced. This will
determine which device is causing the failure. For further assistance call for technical support.
22

MAINTENANCE SCHEDULE
For use with Maintenance Alert System.
Check at the intervals listed in the following chart.

ITEM

EVERY 3 MONTHS
OR
5,000 CYCLES

PROCEDURE

EVERY 6 MONTHS
OR
10,000 CYCLES

EVERY 12 MONTHS
OR
20,000 CYCLES

Check for excessive slack.
Check & adjust as required.
Lubricate

Sprockets

Check set screw tightness

Clutch

Check & adjust as required

Belt

Check condition & tension

Fasteners

Check & tighten as required

Manual Disconnect

Check & Operate

Bearings & Shafts

Check for wear & Lubricate

Drive Chain

Use SAE 30 Oil (Never use grease or silicone spray).
Repeat ALL procedures.
Do not lubricate motor. Motor bearings are rated for continuous operation.
Do not lubricate clutch or V-belt.
Inspect and service whenever a malfunction is observed or suspected.
CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY.

HOW TO ORDER REPAIR PARTS
OUR LARGE SERVICE ORGANIZATION
SPANS AMERICA
INSTALLATION AND SERVICE INFORMATION
IS AS NEAR AS YOUR TELEPHONE SIX DAYS A WEEK.
SIMPLY DIAL OUR TOLL FREE NUMBER:

1-800-528-2806
HOURS: (Central Standard Time)
6:00 A.M. TO 7:00 P.M. - Monday through Friday
8:00 A.M. TO 4:30 P.M. - Saturday

www.liftmaster.com
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE
FOLLOWING INFORMATION:
• PART NUMBER
• PART NAME
• MODEL NUMBER
ADDRESS ORDERS TO:
THE CHAMBERLAIN GROUP, INC.
Technical Support Group
6020 S. Country Club Road
Tucson, Arizona 85706

ILLUSTRATED PARTS - ELECTRICAL BOX

S7
S1
S3

S6
S5
S2
S8

S9
5

L9
6

4
8

9
L6
L2

L2
L6
L4
2

1
3

REPAIR PARTS KITS – ELECTRICAL BOX

LOGIC CONTROL (VER. 2.0)

Below are replacement kits available for your operator. For replacement of electrical box, motor or brake components be sure
to match model number of your unit to kit number below to ensure proper voltage requirements. Optional modifications and/or
accessories included with your operator may add or remove certain components from these lists. Please consult a parts and
service representative regarding availability of individual components of kits specified below. Refer to page 23 for all repair part
ordering information.

Electrical Box Replacement Kits
To order a complete electrical box kit, add a K- prefix to the
model number of your operator. For example:
T5011L (Operator) = K-T5011L (Electrical box replacement kit)
Electrical Box Sub-Assemblies
K72-13912
Limit Shaft Assembly
K72-12514
Limit Switch Assembly
Motor Kits
K20-1033B2L Models T3311L, T3321L
K20-3033B4
Models T3323L, T3338L, T3343L
K20-51033B
Model T3325L
K20-1050B2L Models T5011L, T5021L
K20-3050B4
Models T5023L, T5038L, T5023L
K20-51050B
Model T5025L
K20-1075B2
Models T7511L, T7521L
K20-3075B4
Models T7523L, T7538L, T7543L
K20-51075B
Model T7525L
K20-1100B2T Models T1011L, T1021L
K20-3100B4T Models T1023L, T1043L
Shaft Assemblies
K72-12506
Clutch Shaft Assembly (1/3 & 1/2 HP Models)
K72-12507
Clutch Shaft Assembly (3/4 & 1 HP Models)
K72-12508
Output Shaft Assembly (1/3 & 1/2 HP Models)
K72-12509
Output Shaft Assembly (3/4 & 1 HP Models)
Hardware, Track, Drive Chain Kits
K77-13821
Hardware Kit
See pg. 19
Drive Chain
See pg. 19
Track
Brake Kits
71-B120
115 Volt Models
71-B240
230-460 Volt Models
Notes: Single phase units are equipped with an external line
break device and may be equipped with an additional internal
pilot duty thermal O/L device.
Three phase units may be equipped with an internal pilot duty
thermal O/L device or an external line break device.

* COMPLETE ELECTRICAL BOX KITS
Item
1
2
3
4
5
6
7
8
9
10

Qty
1
1
1
1
1
1
9
1
1
1

Description
Electrical Box
Electrical Box Cover
(See Variable Components)
(See Variable Components)
PCB assembly
Terminal Block, Radio
Standoff, Assembly
RPM Sensor Board
Housing, RPM Board
Programmed Chip

P/N
10-13790
10-10115
21-XXXX
25-XXXX
79-13433
42-10040
75-13705
79-15016
093D0148
29-CDO-XXX

* Electrical Box Kits include parts from K72-13912 and K72-12514

K72-13912
Item
L1
L2
L3
L4
L5
L6
L7
L8
L9

LIMIT SHAFT ASSEMBLY KIT
Description
Limit Shaft, Standard T
Flange Bearing, 3/8" I.D.
Limit Nut
Sprocket 48B9 x 3/8" Bore
Washer, Shim 3/8" I.D. x .050 THK.
Washer, Shim 3/8" I.D. x .010 THK.
Roll Pin, 1/8 DIA. x 1 Long
E Ring, 3/8"
Rotating Cup

P/N
11-10021
12-10028
13-10024
15-48B9A
80-10025
80-10026
86-RP05-108
87-E-038
29-10344

Qty
1
2
2
1
1
4
1
3
1

K75-12514 LIMIT SWITCH ASSEMBLY KIT
Item
S1
S2
S3
S4
S5
S6
S7
S8
S9

P/N
10-10013
10-12553
10-12806
18-10036
23-10041
31-12542
82-PX04-20
82-PX06-16
84-LH-06

Description
Depress Plate
Nut Plate, Switch
Backup Plate
Spring, Depress Plate
Limit Switch
Standoff, Limit Switch
Screw, #4-40 x Pan Head Phillips
Screw, #6-32 x 1" Pan Head Phillips
Locknut, #6-32 Nylon Hex

Qty
1
3
1
2
3
3
6
2
2

ITEM

PART NO.

Transformer, 115 Volts

21-5460

Transformer, 460 Volts

25-2006

Overload, 6 Amp

25-2008

Overload, 8 Amp

25-2010

Overload 10 Amp

25-2015

Overload 15 Amp

25-2020

Overload 20 Amp

25-10296

Overload 2.8-4.4 Amp

25-13840

Overload 2.0-3.0 Amp

T1043L

T1023L

T1021L

T1011L

T7538L

T7525L

T7543L

T7523L

T7521L

T7511L

T5038L

T5025L

T5043L

T5023L

T5021L

T5011L

T3338L

T3325L

T3343L

T3323L

DESCRIPTION

21-14182
3

T3321L

T3311L

VARIABLE COMPONENT KITS

ILLUSTRATED PARTS - MODEL T

H4
H6
H8
H3

H5
DRIVE CHAIN

O11

TRACK

O3
O9
O1

H2
H7

O8
O10

10-10030

C16
O9

C3
C2

C13
O2
O4

C10

10-10011M1

C14
C15

O5
O6
C10

27-10188

C1
C6

ELECTRICAL BOX
(SEE PG. 17))

C8
C3
C9

MOTOR (SEE PG. 17)

C11
C5
C12
B15
B10
B3

B13

B12
B4

B5
B16

B9
B2

B11

B1
B8
B14

B15

17-6014

B14
Brake Components

Standard on 3/4 & 1HP units; Optional on 1/3 & 1/2HP units

REPAIR PARTS KITS – MODEL T

LOGIC CONTROL (VER. 2.0)

Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or accessories
are included with your operator, certain components may be added or removed from these lists. Individual components of
each kit may not be available. Please consult a parts and service representative regarding availability of individual
components. Refer to page 23 for all repair part ordering information.
CLUTCH SHAFT ASSEMBLY KITS

BRAKE ASSEMBLY KITS
KIT PART #
71-B120
71-B240
ITEM
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16

OPERATOR(S)
115 Volt Models
230-460 Volt Models

FOR

PART #
07-10179
10-10187
10-10190
10-10191
11-16094
11-16095
18-10194
19-48001
22-120
22-240
31-10186
75-10180
75-10184
80-9001
82-WX10-08T
86-CP04-108
87-P-062

K72-12507 (1/3 &1/2 HP)

DESCRIPTION
Brake Hub
Brake Solenoid Cover
Brake Release Lever
Brake Disc, Zinc Plated
Spring Cup for Brake Assembly
Brake Stud
Spring, Compression x .875" Long
Chain, #48 x 1 Pitch
Brake Solenoid, 115V
Brake Solenoid, 230-460V
Spacer, .20 I.D. x .31 Long
Brake Mounting Plate Assembly
Brake Pressure Plate Assembly
Feather Key
Screw, #10-32 x 1/2" Serrated Flange
Cotter Pin, 1/8" x 1-3/4" Zinc Plate
Push on Fastener, 5/8" Int. Star

ITEM
C1
C2
C3
C4
C5
C6
C7

QTY
1
1
1
1
4
4
4
1
1
1
2
1
1
1
8
2
1

C8
C9
C10
C11
C12
C13
C14
C15
C16

PART #
10-10203
10-10204
10-10205
11-10130
75-10170
75-10174
75-10214
75-10259

DESCRIPTION

K75-12870 STRAIGHT AND CURVED ARM ASSY
H1
H7

10-10203
75-10214

1
1

Curved Armbly
Straight Arm Assembly

K72-12506 (3/4 & 1 HP)
QTY

Clutch Plate
Clutch Shaft
Bearing 3/4" I.D.
Sprocket, 48B10 x 3/4"
Cogged Belt
4L Motor Pulley 7" O.D.
Spring, Clutch (1/3 & 1/2 HP)
Spring, Clutch (3/4 & 1 HP)
Clutch Disc
Shim Washer Thick
Shim Washer Thin
Nut 3/4-16 Castle
Flatwasher 3/4" I.D.
Cotterpin 1/8" x 1-3/4" Long
Roll Pin 1/4" x 1-1/8" Long
Roll Pin 1/4" x 2" Long
Turac 3/4" Push on Fastener

ITEM PART #
DESCRIPTION
Output Shaft
O1
11-10015
Bearing, Flange
O2
12-10331
Sprocket, 41B10 x 3/4" Bore, PM
O3
15-41B10G1
15-48B10GXX Sprocket, 48B10 x 3/4" Bore, Steel
O4
15-41B32GXX Sprocket, 41B32 x 3/4" Bore
Sprocket, 48B10 x 3/4" Bore, PM
O5
15-48B10G1
Drive Chain, #41 x 47 Pitches
O6
19-41047M
Limit Chain, #48 x 33 Pitches
O7
19-48033
Shim Washer, Thin
O8
80-10023
Roll Pin, 1/4" Dia. x 1-1/8" Long
O9
86-RP08-102
Roll Pin, 1/4" Dia. x 1-1/2" Long
O10 86-RP08-108
Push Ring, 3/4" I.D.
O11 87-P-075

QTY
1
1
1
1
1
1
1
2

Curved Arm
Door Bracket
Header Bracket
Header Pivot Pin
Slider Assembly
Front Idler Assembly
Straight Arm Assembly
Track Spacer Assembly

10-10166
11-10014
12-10029
15-41B10G1
16-5L300
17-10165
18-10164
18-10168
39-10167
80-10022
80-10023
84-SH-76
85-FW-75
86-CP05-108
86-RP08-102
86-RP08-200
87-P-075

DESCRIPTION

1
1
2
1
1
1
1
1
1
2
3
1
5
1
1
1
1

OUTPUT SHAFT ASSEMBLY KIT
K72-12508 (1/3 &1/2 HP) OR K72-12509 (3/4 & 1 HP)

K77-13821 HARDWARE KIT
ITEM
H1
H2
H3
H4
H5
H6
H7
H8

PART #

QTY
1
2
1
1
1
1
1
1
2
2
1
1

DOOR TRACK AND DRIVE CHAIN KITS
DOOR TRACK
DOOR HEIGHT
Doors
Doors
Doors
Doors
Doors
Doors
Doors
Doors
Doors

to
to
to
to
to
to
to
to
to

8'
10'
12'
14'
16'
18'
20'
22'
24'

PART #
10-5808
10-5810
10-5812
10-5814
10-5816
10-5818
10-5820
10-5824
10-5824

DOOR DRIVE CHAIN

DESCRIPTION
Track, 11' Length
Track, 13' Length
Track, 15' Length
Track, 17' Length
Track, 19' Length
Track, 21' Length
Track, 23' Length
Track, 27'-6" Length
Track, 27'-6" Length

#48 CHAIN (1/3 & 1/2 HP)
19-5810
19-5810
19-5812
19-5814
19-5816
19-5818
19-5820
19-5824
19-5824

#41 CHAIN (3/4 & 1 HP)
19-5112
19-5112
19-5112
19-5114
19-5116
19-5118
19-5120
19-5124
19-5124

CONTROL CONNECTION DIAGRAM
IMPORTANT NOTES:
The 3-Button Control Station provided must be connected for operation.
If a STOP button is not used, a jumper must be placed between terminals 4 and 5.
3 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER AND STOP BUTTON
STANDARD
7

2 OR MORE
6

(RED)

Maintenance
Alert LED

Stop

(WHITE)

(RED)

Open
Maintenance
Alert LED

KEY LOCKOUT

Open

Stop

(WHITE)

Open

Maintenance
Alert LED

Close
Stop

(WHITE)

Stop

Keyswitch
2 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER
STANDARD
7

2 OR MORE
7

D1 & E2
MODE ONLY

Open
See Note

Open

1 BUTTON STATION OR ANY AUXILIARY DEVICE

RADIO CONTROLS
OPEN / CLOSE
R1 R2
R3

OPEN / CLOSE
1

See Note

4
B2, T, TS & FSTS
MODE ONLY
Any Commercial Type
LiftMaster Brand Receiver

See Note
SENSING DEVICE TO REVERSE OR STOP

EXTERNAL INTERLOCK

Note: 11 & 4 are both the same common
Either is acceptable

Remove Factory Installed Jumper
When Interlock is Used

Sensing Device
ONE

2 OR MORE
All Wiring Types

01-30961A

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01 30961A 1345 1HP 0130961

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