Logic3 T Owner's Manual

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NOT FOR RESIDENTIAL USE

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PATENT PENDING

The Maintenance Alert System™ allows the
installer to set an internal Maintenance
Cycle Counter. The Logic 3 operator
incorporates a self-diagnostic feature built
into the (MAS) Maintenance Alert System
LED. An LED on the 3-button station will
signal when the set number of
cycles/months is reached or when the
operator requires immediate service.

This Operator Features

the Enhanced

Radio Receiver

Built on Board

Serial # Box

Installation Date

2 YEAR WARRANTY

315MHz

Visit www.LiftMaster.com to locate a professional installing dealer in your area.

INTENDED FOR PROFESSIONAL
INSTALLATION ONLY

A SAFETY DEVICE IS HIGHLY RECOMMENDED

2

TABLE OF CONTENTS

SPECIFICATIONS

Carton Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Operator Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Operator Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

PREPARATION

Track Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Powerhead Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Trolley Carriage/Chain Attachment . . . . . . . . . . . . . . . . . . . . . . . .5

INSTALLATION

Mount the Header Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Mount the Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Hang the Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Straight Arm Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Entrapment Protection Accessories . . . . . . . . . . . . . . . . . . . . . . .8

ADJUSTMENT

Limit Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Emergency Disconnect System . . . . . . . . . . . . . . . . . . . . . . . . .10

Brake Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Clutch Adjustment and Auxiliary Reversal System . . . . . . . . . .11

POWER & GROUND WIRING

Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Power Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Ground Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .12

CONTROL STATION WIRING & INSTALLATION

Control Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .13

External Radio Wiring Connections . . . . . . . . . . . . . . . . . . . . . .13

Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

DIAGRAMS

Standard Power & Control Connection Diagrams . . . . . . . . . . .14

1 Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

3 Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Logic Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

PROGRAMMING

Logic Control Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Determine and Set Wiring Type . . . . . . . . . . . . . . . . . . . . . . . . .18

Failsafe Wiring Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Self-Monitoring Safety Device Options . . . . . . . . . . . . . . . . . . .19

Programming Remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-21

Maintenance Alert System (MAS) . . . . . . . . . . . . . . . . . . . . . . .22

Mid Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Timer To Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-24

Car Dealer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

AUTOMATICALLY LEARNED PROGRAMMING

Auxiliary Reversal System/RPM Sensor . . . . . . . . . . . . . . . . . . .25

Maximum Run Timer (MRT) . . . . . . . . . . . . . . . . . . . . . . . . . . .25

OPTIONAL PROGRAMMING

Red/Green Warning Light Card . . . . . . . . . . . . . . . . . . . . . . . . . .26

Resetting Factory Defaults - Clearing Memory . . . . . . . . . . . . . .26

MAINTENANCE

Maintenance Shedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Life of Operator Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

How to Order Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

TROUBLESHOOTING

Diagnostic Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Troubleshooting Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Troubleshooting Radio Functionality . . . . . . . . . . . . . . . . . . . . .31

REPAIR PARTS

Electrical Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32-33

Repair Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-35

Control Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .36

When you see these Safety Symbols and Signal Words on the
following pages, they will alert you to the possibility of serious
injury or death if you do not comply with the warnings that
accompany them. The hazard may come from something
mechanical or from electric shock. Read the warnings carefully.

When you see this Signal Word on the following pages, it will
alert you to the possibility of damage to your door and/or the
door operator if you do not comply with the cautionary
statements that accompany it. Read them carefully.

Mechanical

Electrical

WARNINGWARNING

WARNING

WARNINGWARNING

WARNING

CAUTIONCAUTION

WARNING

WARNING

IMPORTANT NOTES:

• BEFORE attempting to install, operate or maintain the operator,
you must read and fully understand this manual and follow all
safety instructions.

• DO NOT attempt Installation, repair or service of your
commercial door and gate operator unless you are an
Authorized Service Technician.

Before beginning your installation check that all components were provided.

CARTON INVENTORY

OPERATOR DIMENSIONS

3

DESCRIPTION

POWERHEAD ASSEMBLY
OWNER’S MANUAL AND CAUTION LABELS
HARDWARE BOX (INCLUDES FASTENERS, TRACK SPACERS, TROLLEY, DOOR ARM ASSEMBLY, FRONT IDLER AND HEADER

MOUNTING BRACKET)
3-BUTTON CONTROL STATION WITH LED
TROLLEY DRIVE CHAIN (#48 FOR 1/3 & 1/2 HP, #41 FOR 3/4 HP AND HIGHER)

NOTE: The tracks are shipped separately.

11.63"

*Door Height Plus 4 feet (minimum)

*23.43"

13.05"

Highest Point of Door Travel

4"

*

- For Units with Brake add 3-1/2”

(Standard on 3/4 & 1 HP models; Optional on 1/3 & 1/2 HP)

WEIGHTS AND DIMENSIONS

HANGING WEIGHT: 80-110 LBS.

4

OPERATOR SPECIFICATIONS

SAFETY

DISCONNECT: . . . . . . . . . . . . . . .Quick disconnect door arm for

emergency manual door operation.

SAFETY PHOTO EYES (Optional CPS-L): Through beam or retro

reflective devices used to provide non-contact

safety protection.

SAFETY EDGE (Optional): Electric or pneumatic sensing device

attached to the bottom edge of door.

MOTOR

TYPE:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Duty

HORSEPOWER: . . . . . . . . . . . . . . . . . . . 1/3, 1/2, 3/4 and 1 HP

SPEED: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1725 RPM

VOLTAGE: . 115/230V 1 Phase, 208/230/380/460/575V 3 Phase

CURRENT: . . . . . . . . . . . . . . . . . . . . . . . . See Motor Nameplate

ELECTRICAL

TRANSFORMER: . . . . . . . . . . . . . . . . . . . . . . .24Vac Secondary

CONTROL STATION: . . . . . . . . . . . . . . .NEMA 3-Button Station

Open/Close/Stop w/LED

WIRING TYPE: . . . . . . . . . . . . . . . . . . . . . . . . . . .C2 (Standard)

Momentary contact to OPEN & STOP, constant pressure to
CLOSE, plus wiring for sensing device to reverse and auxiliary
devices to open and close with open override. See pages 18 and
19 for optional wiring types and operating modes.

LIMIT ADJUST: . . . . . . . . .Linear driven, fully adjustable screw

type cams. Adjustable to 24'.

MECHANICAL

DRIVE REDUCTION: . . . . . . . .Primary: Heavy duty (5L) V-Belt

Secondary: #41 chain/sprocket;

Output: #48 chain (1/3 & 1/2 HP) or #41 chain (3/4 & 1 HP)

OUTPUT SHAFT SPEED: . . . . . . . . . . . . . . . . . . . . . . .140 RPM

DOOR SPEED: . . . . . . .11 - 12" per second depending on door

BRAKE: . . . . . . . . .Solenoid actuated disc brake on 3/4 & 1 HP

BEARINGS: . . . . . . . . . . . . .Output Shaft: Shielded Ball Bearing

Clutch Shaft: IronCopper sintered and oil impregnated

5

PREPARATION

TRACK ASSEMBLY

1. Using the 3/8"-16 x 3/4 " bolts and flange hex nuts provided,
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.

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.

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

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 ).

2. Secure the operator in place by installing six 3/8"-16 x 3/4"
bolts in the three holes on each side of the frame and track.

3. Connect the track to the powerhead by fastening
(2) 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 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. Using the other master link, attach the chain to the take-up
bolt and tighten to the desired chain tension.

CHAIN TENSION: With trolley positioned at either end of the
track, a properly adjusted chain will sag about 3" at the midpoint.
If necessary, remove links from the chain to achieve proper
adjustment.

To prevent possible SERIOUS INJURY or DEATH:

• DO NOT connect electric power until instructed to do so.

• If the door lock needs to remain functional, install an
interlock switch.

• ALWAYS call a trained professional door serviceman if door
binds, sticks or is out of balance. An unbalanced door may
not reverse when required.

• NEVER try to loosen, move or adjust doors, door springs,
cables, pulleys, brackets or their hardware, ALL of which are
under EXTREME tension and can cause SERIOUS personal
INJURY.

• Disable ALL locks and remove ALL ropes connected to door
BEFORE installing and operating door operator to avoid
entanglement.

WARNING

WARNINGWARNING

Reel Chain
Around Idler and
Over Spacer Brackets

Master Link

Hex Nut

Lockwasher

Trolley Assembly

Trolley Carriage

Hex
Nut

Master Link

Take-up Bolt

Roller Chain

Front Idler Assembly

Trolley Carriage

Spacer Bracket
(Mounted Nylon Pad Side Up)

L - Slot

Straight Arm

6

INSTALLATION

IMPORTANT NOTE: Before your operator is installed, be sure the door has been properly aligned and is working smoothly. The
operator may be wall mounted or mounted on a bracket or shelf. If necessary, refer to the preparation on page 5. Refer to the
illustrations and instructions below that suit your application.

MOUNT THE HEADER BRACKET

1. Close the door and mark the inside vertical centerline of the
door.

2. Extend the line onto the header wall above the door.

You can fasten the header bracket within 2 feet of the left or
right of the door center only if a torsion spring or center
bearing plate is in the way.

3. Open your door to the highest point of travel as shown. Draw
an intersecting horizontal line on the header wall 4" (10 cm)
above the high point. This height will provide travel clearance
for the top edge of the door.

MOUNT THE OPERATOR

1. Position the operator on the floor below the header bracket.

2. Position the front idler assembly against the header bracket.

3. Align the bracket holes and join with pivot shaft as shown.
Secure with cotterpins (provided).

3.5"

(8.89 cm)

1.75"
(4.45 cm)

4" (10.16 cm)

Min.

4. Raise the operator to a horizontal position above the guide rails
and temporarily secure with a suitable rope, chain, or support
from the floor. Open 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.

4. 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.

High Rise Point
Projection Line

Header Bracket

Cotterpins

Pivot Shaft

Door Travel
Projection

Carpenter’s
Level

High Point
of Travel

Header Wall

Vertical Centerline of Door

Header Bracket Drill Pattern

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

Guide Rails

Operator Alignment

7

To avoid possible SERIOUS INJURY from a falling operator,
fasten it SECURELY to structural supports of the garage.
Concrete anchors MUST be used if installing ANY brackets

into masonry.

WARNINGWARNING

WARNING

HANG THE OPERATOR

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.

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. Check to make sure the track is centered over the door (or in
line with the header bracket if the bracket is not centered above
the door).

NOTE: If the operator is longer than 15' use of a mid-span
support is recommended.

STRAIGHT ARM ATTACHMENT

1. Fully close the door and move the trolley slider to within 2" 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.

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.

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.

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

INSTALLATION

Top Roller

Mid-Span
Support Brace

Powerhead
Support Brace

Curved
Door Arm

Straight Arm

Vertical Centerline of Door

Door Bracket

Pivot Bolt

8

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

PHOTO EYES & SENSING EDGES

Sensing devices provided 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 you would
like to order or receive more information on safety devices, please
contact your local 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 described below before

making any sensing edge wiring connections to operator.

b. Electrician must hardwire the junction box to the operator

electrical box in accordance with local codes.

WIRING

For wiring of your sensing device to the operator, refer to the
wiring diagrams provided on pages 14 and 15. 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 provided)
fastened to the wall approximately halfway up the door opening.

INSTALLATION

To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:

• The radio is used.

• The 3-button control station is out of sight of the door.

• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.

WARNINGWARNING

WARNING

9

ADJUSTMENT

To avoid SERIOUS personal INJURY or DEATH from
electrocution, disconnect electric power BEFORE manually
moving limit nuts.

WARNING

WARNINGWARNING

LIMIT SWITCH ADJUSTMENT

NOTE: Make sure the limit nuts are positioned between the limit
switches before proceeding with adjustments.

1. Depress retaining plate to allow nut to spin freely. After
adjustment, release plate and move nut back and forth to
ensure it is fully seated in slot.

2. To increase door travel, spin nut away from limit switch. To
decrease door travel, spin limit nut toward limit switch.

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 the limit switch is engaged as door fully seats at the floor.

SAFETY

(Aux. Close) Limit Switch

CLOSE Limit Switch

OPEN Limit Switch

CLOSE OPEN

10

To prevent possible SERIOUS INJURY or DEATH from a falling
door or arm:

• DO NOT stand under the door arm when pulling the
emergency release.

• If possible, use emergency release handle to disengage
trolley ONLY when door is CLOSED. Weak or broken springs
or unbalanced door could result in an open door falling
rapidly and/or unexpectedly.

• NEVER use emergency release handle unless doorway is
clear of persons and obstructions.

WARNINGWARNING

WARNING

EMERGENCY DISCONNECT SYSTEM

ADJUSTMENT

TO DISCONNECT DOOR FROM OPERATOR

The door should be in the fully closed position if possible. Pull
down on the emergency release handle (so that the trolley release
arm snaps into a vertical position) and lift the door manually. The
lockout feature prevents the trolley from reconnecting
automatically, and the door can be raised and lowered manually
as often as necessary.

TO RECONNECT DOOR ARM TO TROLLEY

Pull the emergency release handle toward the operator at an
angle so that the trolley release arm is horizontal. The trolley will
reconnect on the next UP or DOWN operation, either manually or
by using the door control or remote.

Emergency
Disconnect

Door Arm

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

Emergency
Disconnect

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.

NO EC

I

T

Header
Bracket

Trolley

Track

Chain

Clevis Pin

Emergency
Disconnect

Straight
Door Arm
Assembly

Door
Bracket

Curved
Door Arm

Door

Emergency
Release Handle

11

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 brake assembly.

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

CLUTCH ADJUSTMENT AND AUXILIARY REVERSAL SYSTEM

The Auxiliary Reversal System is designed to protect the door
and motorized operator. It is NOT a substitute for a safety sensing
device. The Auxiliary Reversal System works in tandem with the
adjustable clutch to detect if a closing door runs into or comes
across 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 when closing or stops the door when
opening.

1. Remove cotterpin from nut on the clutch shaft.

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

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.

4. Reinstall cotterpin.

ADJUSTMENT

To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:

• The radio is used.

• The 3-button control station is out of sight of the door.

• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.

WARNINGWARNING

WARNING

Clutch Pulley

Cotterpin

Washer

Adjusting Nut

Spring

Clutch Pad

Clutch Plate

Brake Assembly

Brake Plate
Assembly

Cotterpin

Release Lever

Solenoid

12

POWER WIRING & GROUND WIRING

GROUND WIRING CONNECTIONS

1. Connect earth ground to the chassis ground screw in the
electrical box enclosure.

2. Use same conduit entry into the electrical box as the power

wiring.

IMPORTANT NOTE: This unit must be properly grounded. Failure
to properly ground this unit could result in electric shock and
serious injury.

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. All power and control wiring must be run in separate
conduit in accordance with local electrical codes.

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

NOTE: Must use #14 AWG or thicker wire for power wiring.

ON THREE PHASE MACHINES ONLY: Incorrect phasing of the
power supply will cause the motor to rotate in the wrong
direction. To change motor rotation, exchange incoming power
leads L1 and L2.

To reduce the risk of SEVERE 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 locking-out the power via the operator
power switch. Upon completion of maintenance the area MUST
be cleared and secured, at that time the unit may be returned
to service.

• Disconnect power at the fuse box BEFORE proceeding.
Operator MUST be properly grounded and connected in
accordance with local electrical codes. The operator should be
on a separate fused line of adequate capacity.

• ALL electrical connections MUST be made by a qualified
individual.

• DO NOT install ANY wiring or attempt to run the operator
without consulting the wiring diagram. We recommend that
you install an optional reversing edge BEFORE proceeding with
the control station installation.

• ALL power wiring should be on a dedicated circuit and well
protected. The location of the power disconnect should be
visible and clearly labeled.

• ALL power and control wiring MUST be run in separate
conduit.

WARNING

WARNINGWARNING

Single Phase Power Wiring

Line Power
115/230 Vac
Single Phase

Three Phase Power Wiring

Line Power
208/230/380/460/575 Vac
Three Phase

Hot

Neutral

Ground

Phase 1

Phase 2

Phase 3

13

CONTROL WIRING CONNECTIONS

1. Connect control wires to the P1 terminal block located on the
logic board as shown.

2. Connect conduit with all control wires through the conduit
hole 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. NOTE: In “Diag” mode the 3-button control station can be

tested to verify correct wiring of Open, Close and Stop buttons
without moving the door.

If the door moves in the wrong direction and or the limits move
in the wrong direction, simply move the motor direction jumper
located on the logic board from the factory default setting (STD)
to the (REV) pins. This will change the motor rotation as well as
the functional position of the OPEN and CLOSE limit switch’s.
Then relocate the safety limit switch (SLS) only to the opposite
side with the new functional close limit location. Orient the arm
(lever) of the limit switch away from the center. NOTE: The motor

direction change is not available on the DJ and DH models.

EXTERNAL RADIO WIRING CONNECTIONS

On all models a radio terminal bracket marked R1 R2 R3 is
located on the outside of the electrical enclosure. In B2 mode 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 remote. 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 remote, a commercial three-channel radio
receiver (with connections for OPEN/CLOSE/STOP) is
recommended.

NOTE: If an external radio receiver is being used in place of the
built-in receiver, remove or disconnect the coaxial cable from the
logic board.

MOUNTING INSTRUCTIONS

1. Mount WARNING NOTICE beside or below the control station.

2. Mount MAINTENANCE ALERT label to either side of control
station.

3. Mount control station(s) within line of sight of door(s).

CONTROL STATION WIRING AND INSTALLATION

CONTROL WIRING

USE COPPER WIRE ONLY

40-10032B

To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:

• The radio is used.

• The 3-button control station is out of sight of the door.

• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.

WARNINGWARNING

WARNING

POWER

TIMER

DEFEAT

MAS

4

TS

24V

AC

24V

AC

TIMER

DEFEAT

CMN

MAS

EYES

EDGE

OPEN

CLOSE

STOP

CMN

SBC

11

10

9

14

13

12

8

7

6

5

4

3

2

1

EDGE

EYES

P1

D34

F1

D1 E2

)

D23

D15

R8

C18

D8

U7

R31

D31

C3

Ø

D7
D6
D5
D4 C25

C17

P1

Ø

D2

Ø

D21

D13

D14

D28

D17

D19

SBC

24V

AC

24V

AC

TIMER

DEFEAT

CMN

MAS

EYES

EDGE

OPEN

CLOSE

STOP

CMN

SBC

11

10

9

14

13

12

8

7

6

5

4

3

2

1

24 VOLT AC

24 VOLT AC

TIMER DEFEAT

COMMON

MAINTENANCE ALERT SYSTEM

PHOTO EYES (LiftMaster Only)

REVERSE

OPEN

CLOSE

STOP

COMMON

INTERLOCK

INTERLOCK

SINGLE BUTTON CONTROL

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.

Maintenance
Alert System

TM

If light is Flashing
Rapidly, it is time

for routine door
maintenance.

If light is Flashing
Slowly, followed
by a pause, call for
immediate service.

Service every

cycles/months

4'

Approximate

Control
Station

Optional
Controls

14

STANDARD POWER & CONTROL CONNECTION DIAGRAMS

OPEN

Radio Control
(24V DC only)

CPS-L &

CPS-LN4

Maintenance

Alert LED

R3

R2

R1

Sensing Edge

(WH)(RD)

Open

Close

Stop

Open/Close

Single Button

CLOSE

STOP

3-Button

Station

Line Power
115/230 Vac
Single Phase

Timer Defeat

Switch

Single Phase Power Wiring Three Phase Power Wiring

Hot

Neutral

Gnd

Line Power

208/230/380/460/575 Vac

Three Phase

Phase 1

Phase 2

Phase 3

Remove Jumper

To Install External

Interlock

Gnd

15

LOGIC (VER. 3.0) 1 PHASE WIRING DIAGRAM

OPEN

115V MOTOR CONNECTION 230V MOTOR CONNECTION

NOTE: Gray (GY) and purple (PU) motor wires are reversed
for H and HJ right hand models and all GH and J models.

CPS-L & CPS-LN4

Hoist Interlock

When Present

Ø
C3

R31

D8

657–A
Ø

14GP
Ø

657–A
Ø

14LG
Ø

P4

D31

D7

U7

C18

R29

E1

(YE) (BL)

D6

D5

D4 C25

C17

Ø
P1

X1

2
Ø

D3

C11

TMR DEF

SWITCH

14

AC

24V

POWER

U1

K3

Maintenance

CLOSE

Alert LED

(RD) (WH)

STOP

Open

3-Button

Sensing

Close

Station

Edge

Stop

Open/Close

Single Button

Remove Jumper

To Install External

Door Interlock

9

8

7

6

5

4

3

2

SBC

B2 PROG

C2

L5

L1

C71

C78

®

1

F1

SBC

P1

D34

D14

)

B2 C2 D1 E2

NON FAILSAFE

(

S8

FAILSAFE

P6

(YE)

(OR)
(WH)
(YE)
(PU)
(WH)
(RD)
(GY)
(YE)
(RD)
(WH)
(PU)
(YE)
(OR)

(GY)

11

D25

OLS

D17

10

MAS

CMN

R8

D24

MID

D28

MAS

D26

SLS

D23

EYES

EDGE

OPEN

CLOSE

D15

D2Ø D21

EYES

EDGE

4

OPEN

CLOSE

D1

D22

TIMER

ENABLE

DIRECTION
MOTOR

3

TIMER

D16

D27

CLS

MID

MRT

P7

2

1 RADIO

RELAY A

D36

D13

STOP

C77

STOP

RELAY B

CMN

T TS

D35

C73

FSTS E2

C54

D1 DIAG

13

12

TIMER

AC

24V

DEFEAT

D19

TIMER

DEFEAT

ØØ
J3

J1

neutral

ground

115 / 230

VOLT 1PH.

POWER IN

NOTE: Lock Sensor is provided on Models
DJ and DH only, red wire from main harness
connects to NC on Bypass L/S and to NO on
Lock Sensor switch. White wires connect the
COM on Bypass L/S and Lock Sensor switch to
NC on Open L/S.

hot

(YE)

L3 L2 L1

(WH)

MOV

MOV

(WH)

COM 120

+24 VAC -24 VAC

(WH)

COM

OPEN L/S

COM

BYPASS

L/S

LOCK

SENSOR

(see note at left)

NO

NC

NO

NC

VAC

NO

NC

(BK)

(WH)

120 / 240

(RD)

(RD)

(RD)

VAC

(PU)

(WH)

(BR)

(WH)

(YE)

(WH)

NO

CLOSE L/S

NC

NC

SAFETY L/S

NO

See Motor

Connections

NO

COM

COIL

COM

COM

(WH)

C

(GY)

(WH)

(RD)

(WH)

1 2 3 4

RPM Board

0 1

B

4

8

6

2

(YE)

(GY)

(YE)

(WH)

(WH)
(WH)

(WH)

(WH)

(WH)

(YE)

(OR)

0 1

A

4

2

(BL) (GY)

(PU)

See Motor

Connections

(YE)

(WH)

(OR)

R1 R2 R3

Radio

(PU)

8

6

16

LOGIC (VER. 3.0) 3 PHASE WIRING DIAGRAM

T4

J

T5

J

230V BRAKE

(WHEN PRESENT)

T6

T7 T1

T8

T9 T3

T4

(GY)
(BR)

T2

(PU)

(BR)
(YE)

230V BRAKE

J

T5

J

(WHEN PRESENT)

T6

T7 T1

T8

T9 T3

(GY)

(BR)

T2

(PU)

(BR)

(YE)

(BL/BK)

575V BRAKE

(WHEN PRESENT)

(BL/BK)

1

2

3

208/230V MOTOR CONNECTION 460V MOTOR CONNECTION 575V MOTOR CONNECTION

NOTE: Gray (GY) and purple (PU) motor
wires are reversed for H and HJ right hand
models and all GH and J models.

Sensing

Edge

CPS-L & CPS-LN4

Hoist Interlock

When Present

Ø
C3

R31

D8

657–A
Ø

14GP
Ø

657–A
Ø

14LG
Ø

P4

D31

U7

C18

R29

E1

D7

D6

C11

TMR DEF

SWITCH

(YE) (BL)

14

AC

24V

D5

D4 C25

C17

Ø
P1

X1

U1

2

K3

Ø
D3

11

D25

OLS

10

MAS

CMN

D23

D28

D17

R8

D24

MID

MAS

4

D26

SLS

13

12

TIMER

AC

24V

DEFEAT

D19

POWER

TIMER

DEFEAT

ØØ
J3

J1

D16

(GY)

(BR)

(PU)

(BR)
(YE)

9

EYES

EYES

DIRECTION
MOTOR

D27

CLS

D15

D1

TIMER

MID

MRT

P7

8

EDGE

EDGE

OPEN

D22

7

OPEN

D2Ø D21

CLOSE

TIMER

ENABLE

3

2

D36

1 RADIO

Maintenance

Alert LED

(RD) (WH)

Open

Close

Stop

6

5

STOP

CLOSE

D13

STOP

T TS

RELAY A

RELAY B

D35

C77

Open/Close

Single Button

4

3

CMN

FSTS E2

D1 DIAG

C54

L1

C73

C78

®

2

1

F1

SBC

P1

D14

SBC

)

B2 C2 D1 E2

NON FAILSAFE

(

S8

B2 PROG

C2

FAILSAFE

L5

C71

OPEN

CLOSE

STOP

3-Button

Station

Remove Jumper

To Install External

Door Interlock

D34

(YE)

(OR)
(WH)
(YE)
(PU)
(WH)
(RD)
(GY)
(YE)
(RD)
(WH)
(PU)
(YE)
(OR)

(GY)

P6

208/ 230 / 380 / 460

VOLT 3PH.

NOTE: Lock Sensor is provided on Models
DJ and DH only, red wire from main harness
connects to NC on Bypass L/S and to NO on
Lock Sensor switch. White wires connect the
COM on Bypass L/S and Lock Sensor switch to
NC on Open L/S.

POWER IN

(YE)

(WH)

L3 L2 L1

(WH)

COM 120

+24 VAC -24 VAC

OPEN L/S

BYPASS

L/S

LOCK

SENSOR

(see note at left)

MOV

MOV

(WH)

(BK)

VAC

240 / 460 /
575 VAC

NO

COM

COIL

(WH)

D

(WH)

(WH)

(PU)

(BR)

(BR)

See Motor

Connections

(WH)

NO

COM

C

COIL

0 1

B

8 4

(WH)

6 2

(GY)

(WH)
(WH)
(WH)

(WH)

(WH)

(PU)

(OR)

0 1

A

4

(GY)

8

6 2

(YE)

See Motor

Connections

(RD)

(WH)

(RD)

(RD)

(PU)

(WH)

(WH)

(YE)

COM

NO

CLOSE L/S

NC

NC

SAFETY L/S

NO

COM

(RD)

(YE)

(WH)

1 2 3 4

RPM Board

(GY)

(YE)

(WH)

(OR)

R1 R2 R3

Radio

(WH)

COM

NO

NC

COM

NO

NC

NO

NC

17

LOGIC BOARD

Wiring Type
Selector Dial

Failsafe Switch

Maximum Run

Timer Button

Auxiliary Board

Connections

Programmed Chip

Mid Stop Learn Button

Timer to Close

Learn Button

Radio Learn Button

Open Button

Close Button

Stop Button

Control Wiring
Terminal Block

Motor Direction
Jumper

Maintenance Alert
System Button for
Programming

Single Phase &
Three Phase Jumper

C11

Ø

14LGØ657–A Ø14GPØ657–A

P4

SINGLE PHASE 

D1

FSTS E2

C18

P1

TIMER

DEFEAT

R8

MAS

4

EYES

EDGE

OPEN

CLOSE

STOP

D8

Ø

POWER

C17

D19

D17

D28

D23

D15

D2

D21

D13

Ø

E1

R29

Ø

2

D3

U1

K3

OLS

MID

SLS

D16

P7

C73

CLS

MRT

1 RADIO

C77

MID 2 TIMER

D36

D35

C54

X1

D25

D24

D26

D27

RELAY A

RELAY B

J1

REV

STD

MOTOR

DIRECTION

TIMER

3

ENABLE

T TS

J3

ØØ

CONTACTOR/3 PH 

D22

D1 DIAG

C71

L1

C2

L5

P6

B2 PROG

FAILSAFE

S8

(

B2 C2 D1 E2

NON FAILSAFE

SBC

)

D14

D34

C78

®

R31

Ø

C3

U7

D31

D7
D6
D5
D4 C25

24V

AC

14

24V

AC

13

TIMER

DEFEAT

12

CMN

11

MAS

10

EYES

EDGE

OPEN

CLOSE

STOP

CMN

9

8

7

6

5

4

3

2

SBC

P1

1

F1

18

PROGRAMMING

DETERMINE AND SET WIRING TYPE

Read the descriptions of the different wiring types to determine
which setting will be correct for each application.

SET THE SELECTOR DIAL TO THE DESIRED WIRING MODE:

NOTE: For failsafe wiring you must also set failsafe switch to
FAILSAFE.

TYPE
C2 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. Compatible with 3-Button Station

and 1-Button Station.

B2 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. Compatible with

3-Button Station, 1-Button Station and 1- and 3-Button
Remote Controls.

D1 Constant pressure to open and close with wiring for

sensing device to stop. Compatible with 2-Button
Station.

E2 Momentary contact to open with override and constant

pressure to close. Release of close button will cause
door to reverse (roll-back feature) plus wiring for
sensing device to reverse. Compatible with 3-Button

Station.

SELECTOR DIAL

FAILSAFE SWITCH

LOGIC CONTROL PUSHBUTTONS OPEN, CLOSE, STOP

Open, Close and Stop buttons are mounted directly on the logic
board. Thus, making it easy to program as well as have 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.

NOTE: Refer to logic board illustration on page 17 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 8 for limit switch adjustment
instructions.

19

FAILSAFE WIRING TYPES

TYPE
TS 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. Compatible with 3-Button Station,

1-Button Station and 1- and 3-Button Remote
Controls. (NOTE: Requires self monitoring photo

eyes to operate.)

T 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. Compatible with 3-Button Station,

1-Button Station and 1- and 3-Button Remote
Controls. (NOTE: Requires self monitoring photo

eyes to operate.)

FSTS Momentary button contact for open, close and stop

programming. Radio controls allowing open, close
and stop. User set mid stop. 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. Compatible with 3-Button

Station, 1-Button Station and 1- and 3-Button
Remote Controls. (NOTE: Requires self monitoring

photo eyes to operate this feature/wire type.)

C2 Failsafe Same functions as C2. Self Monitoring safety device

must be installed to operate door for each of the
following failsafe wiring types. See Self Monitoring
Safety Device Options. Compatible with 3-Button

Station, 1-Button Station and 1- and 3-Button
Remote Controls.

PROGRAMMING

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 self monitoring safety
device or CPS3 card with photo eyes or safety edges must be
installed.

RECOMMENDED SELF-MONITORING SAFETY DEVICES:
CPS-L NEMA 1 Direct Connect Eyes
CPS-LN4 NEMA 4 Direct Connect Eyes

IMPORTANT NOTES:

1. External interlocks may be used with all functional modes.

2. Auxiliary devices are any devices that have only dry contacts.
Examples: 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.

B2 Failsafe Same functions as B2. Self Monitoring safety device

must be installed to operate door for each of the
following failsafe wiring types. See Self Monitoring
Safety Device Options. Compatible with 3-Button

Station, 1-Button Station and 1- and 3-Button
Remote Controls.

D1 Failsafe Same functions as D1. Self Monitoring safety

device must be installed to operate door for each of
the following failsafe wiring types. See Self
Monitoring Safety Device Options. Compatible with

2-Button Station and 2-Button Remote.

E2 Failsafe Same functions as E2. Self Monitoring safety device

must be installed to operate door for each of the
following failsafe wiring types. See Self Monitoring
Safety Device Options. Compatible with 3-Button

Station and 3-Button Remote.

20

SINGLE BUTTON REMOTE CONTROL PROGRAMMED
AS A SINGLE BUTTON CONTROL (SBC)

This function programs a remote as a wireless single button
control.

In B2 mode, operation is OPEN/STOP/CLOSE/REVERSE/STOP.
In C2 mode, operation is OPEN/STOP/constant pressure to

CLOSE/STOP on release.
In T and TS modes, operation is

OPEN/STOP/CLOSE/REVERSE/STOP and Timer to Close
start/refresh. NOTE: If Car Dealer mode is enabled, SBC will be

open only stopping at the Open Mid-Stop.

In FSTS mode, operation is OPEN with Timer to Close
start/refresh only, bypassing a programmed Open Mid-Stop.

1. Press and release the RADIO button on the logic board (LED
will light).

2. Press and release the SBC externally wired button or TIMER on
the logic board (LED flashes rapidly and then remains on
solid).

3. Press and hold the remote button until the LED flashes rapidly.
The LED will then remain on solid after releasing.

4. Press and release the RADIO button on the logic board (LED
flashes rapidly and then turns off). The programming mode is
exited if no activity is performed within 30 seconds.

NOTE: Requires self-monitoring photo eyes when using constant
pressure to close (wiring C2, D1 and E2 ).

ERASING REMOTES

Press and hold the RADIO button on the logic board until the
RADIO LED flashes rapidly (approximately 5 seconds).
All remotes will be erased.

STANDARD SINGLE BUTTON REMOTE CONTROL

Built in 3-channel, 315MHz radio receiver allows you to add
as many as 23 Security✚®remote controls or dip switch
remote controls.

PROGRAMMING REMOTE CONTROLS

STANDARD SINGLE BUTTON REMOTE CONTROL

1. To enter programming press and release the RADIO button on
the logic board (LED will light).

2. Press and hold the remote control button until the LED flashes
rapidly, then release remote control button. The LED will then
remain on solid after releasing the button. Repeat to add
additional remote control(s).

3. Press and release the RADIO button to complete the
programming. The programming mode is exited if no activity is
performed within 30 seconds.

NOTE: Single button remote control is not supported with D1 and
E2 wiring modes.

PROGRAMMING

To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:

• The radio is used.

• The 3-button control station is out of sight of the door.

• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.

WARNINGWARNING

WARNING

L

i

f

t

M

a

s

t

e

r

U1

MRT

1 RADIO

MID 2 T

E2

RELA

RELA

D1

C2

B2

OLS

MID

SLS

REV

CLS

D25

D24

D26

D27

D36

C77

C73

C54

C78

L1

L5

P6

D35

D16

P7

K3

FAILSAF

X1

E1

R29

C11

D3

Ø

2

P4

Ø

14LGØ6

C71

®

RADIO

NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of this
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the
battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.

Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.

21

3-BUTTON REMOTE CONTROLS

Your 315MHz Security✚

®

or dip switch remote control can be
programmed to operate as a 3-button wireless control station:
the large button will open the door, the middle button will close
the door, and the third button will stop the door’s movement.
You may set up this feature as follows:

1. To enter programming press the RADIO button on the logic

board (the RADIO LED will light).

2. To program the OPEN button to a remote control press the

OPEN button on the logic board. The RADIO LED will flash and
then stay on solid. Then press the corresponding button on the
remote control. The RADIO LED on the logic board will flash,
this confirms that the remote control has been programmed.
(By programming the remote control you use 1 channel of the
23 channels on the radio receiver.)

3. To program the CLOSE button to a remote control press the

CLOSE button on the logic board. The RADIO LED will flash
and then stay on solid. Then press the corresponding button
on the remote control. The RADIO LED on the logic board will
flash, this confirms that the remote control has been
programmed. (By programming the remote control you use 1
channel of the 23 channels on the radio receiver.)

4. To program the STOP button to a remote control, press the

STOP button on the logic board. The RADIO LED will flash and
then stay on solid. Then press the corresponding button on the
remote control. The RADIO LED on the logic board will flash,
this confirms that the remote control has been programmed.
(By programming the remote control you use 1 channel of the
23 channels on the radio receiver.)

5. After learning remote controls press the RADIO button on the

logic board (LED will turn off). NOTE: If no activity within 30

seconds the radio will automatically exit programming mode.

PROGRAMMING

OPEN

CLOSE

STOP

U1

POWER

TIMER

DEFEAT

MAS

4

MRT

1RADIO

MID2TIMER

TIMER
ENABLE

TTS

FSTSE2

RELAY A

RELAY B

D1 DIAG

C2

B2 PROG

3

24V
AC

24V
AC

TIMER

DEFEAT

CMN

MAS

EYES

EDGE

OPEN

CLOSE

STOP

CMN

SBC

11

10

9

14

13

12

8

7

6

5

4

3

2

1

CLOSE

STOP

OPEN

EDGE

OLS

MID

SLS

MOTOR

DIRECTION

REV?

STD?

CLS

D25

D24

D26

D27

D36

C77

C73

C54

C78

L1

L5

P6

D35

S8

D16

P7

EYES

K3

P1

D34

F1

FAILSAFE(B2 C2 D1 E2

)

NON FAILSAFE

D23

D15

D1

D22

R8

J1

X1

E1

R29

C18

D8

U7

R31

D31

C3

Ø

D7
D6
D5
D4C25

C17

C11

D3

Ø

2

P1

Ø

P4

Ø

14LGØ657–A Ø14GPØ657–A

J3

ØØ

D2

Ø

D21

D13

D14

D28

D17

D19

CONTACTOR/3 PH ?

SINGLE PHASE ?

SBC

C71

®

CLOSE

STOP

OPEN

EDGE

D1

D22

D2

Ø

D21

D13

Open

Close

Stop

REMOTE CONTROL PROGRAMMING FEATURE
Program Remote Controls from the 3-button control station

(3BCS).
Requires Firmware Version 4.6 or higher and a 3BCS with the

MAS connected to the control board.

This feature allows the user to add additional remote controls from
the 3BCS. By default the remote control learn option is off. NOTE:

Requires access to the operator electrical box to enable or disable
this feature.

To turn this feature on:

1. Turn the SELECTOR DIAL to PROG.

2. Press and release the RADIO button. The RADIO LED will be lit.

3. Press and release the MID button. The RADIO LED will flash
quickly 6 times.

4. Press and release the RADIO button. The RADIO LED will turn off.

5. Return the SECTOR DIAL to the desired wiring type.

To add remote controls from the 3BCS:

1. With the door in the fully closed position (close limit activated),
press and hold STOP.

2. While holding STOP, press and hold CLOSE.

3. While holding STOP and CLOSE, press and hold OPEN.

4. Release all three buttons once the MAS LED has lit.

5. Learn a remote control by one of the following methods:

a. Programming a standard single button/single function remote

control, push and hold the remote control button until
the MAS LED goes out. Repeat steps 1 through 4 to add
additional remote controls.

b. Programming a 3-button/three function remote control

(open/close/stop), first push the button on the 3BCS (example:
OPEN) and then press and hold the button on the remote
control (example: large button) that you want to correspond
with the selected (example: OPEN) command until the MAS
LED flashes and goes out. Repeat steps 1 through 4 to add
additional buttons (close and stop).

To turn this feature off:

1. Turn the SECTOR DIAL to PROG.

2. Press and release the RADIO button. The RADIO LED will be lit.

3. Press and release the MRT button. The RADIO LED will flash
quickly 3 times.

4. Press and release RADIO button. The RADIO LED will turn off.

5. Return SELECTOR DIAL to desired wiring type.

NOTE: Restoring the operator to Factory Default (see “RESETTING
FACTORY DEFAULTS”) will also disable this feature. The remote
controls will still be learned.

22

PROGRAMMING

MAINTENANCE ALERT SYSTEM (MAS)

Feature: An internal cycle counter will activate a flashing LED on
the 3-button control station when the preset number of cycles or
months has elapsed (whichever occurs first). Setting this feature
is optional. By default this feature will never activate. Logic 3.0
operators incorporate a self diagnostic feature built into the MAS
LED. In addition to indicating when routine maintenance is due,
the MAS LED can be used to troubleshoot some problems with
the operator.

Benefit: The Maintenance Alert System (MAS) assists the
installing dealer in setting up a routine maintenance program.
Once programmed, the MAS notifies the end user (with a flashing
LED on the 3-button station) when a preset number of
cycles/months has elapsed and scheduled maintenance is due.

To Program:

1. The Maintenance Alert System (MAS) assists the installing
dealer in setting up a routine maintenance program. Once
programmed, the MAS notifies the end user (with a flashing
LED on the 3-button station) when a preset number of
cycles/months has elapsed and scheduled maintenance is due.

2. Close the door.

3. Turn the selector dial to PROGRAM.

4. Press and release the MAS SET button.

5. Press the STOP button once to clear the MAS counter.

6. Press the OPEN button once for every 5,000 cycles
increments. Press the CLOSE button once for every 3 month
increments. Press the STOP button once to clear the MAS
memory.

7. Press the MAS SET button to complete the programming. The
on board LED will flash back the programmed settings. The
OPEN LED will flash once for every 5,000 cycles. The CLOSE
LED will flash once for every 3 months.

8. Turn the selector dial back to the desired wiring type.

NOTE: If MAS LED flashes 2 or more flashes in a row followed by
a pause, an operator error occurred. Turn to page 30 to diagnose
problem.

Example: A door is installed with 30,000 cycle springs and has
an annual service contract. To set the MAS, turn selector dial to
PROGRAM, press MAS button, press the STOP button to clear
the memory and then press the OPEN button 6 times (30,000
cycles) and close 4 times (12 months). Press the MAS again to
complete the programming. Set the selector dial to desired wiring
type.

Special Notes about MAS: A 5th wire must be run to the control
station to activate the MAS LED. The MAS LED on the logic board
is always enabled. When the operator is serviced after the MAS
LED has started to flash, repeat the setup procedure to program
in the number or cycles desired until the next service visit OR
press and hold the MAS button for 5 seconds in the PROGRAM
mode to reset the MAS with its current programmed value. To
disable the MAS, follow the programming procedure above and
press the STOP button to reset the counter to zero. Every time
the operator leaves the close limit is counted as one cycle.

To view how many cycles are programmed into the MAS, set the

Operation will vary
depending on
wiring type

SELECTOR DIAL

OPEN

CLOSE

STOP

Adds 5,000 cycles to Maintenance Alert System
Activation Counter.

Adds 3 Months to Maintenance Alert System
Activation Timer.

Clears memory, sets Maintenance Alert System
Activation Counter to 0 cycles and
0 months.

Press This To Get This

3-BUTTON STATION

Maintenance
Alert LED

selector dial to DIAGNOSTIC and press the MAS button. The
OPEN button LED will flash once for every 5,000 cycle increment
programmed and the CLOSE button LED will flash once for every
3 month increment programmed.

To view how many cycles have elapsed since the last time the
MAS was programmed, set the selector dial to “Diagnostic” and
press the “MAS” button. Press the OPEN button; the OPEN LED
will flash once for every 5,000 cycles that has elapsed. Press the
CLOSE button; the CLOSE LED will flash once for every (3)
months that has elapsed. Press the MAS button to exit.

OPEN

CLOSE

STOP

OPEN MID STOP

Feature: The mid stop feature is to open the door to a preset point
prior to the fully open position.

Benefit: The door opens to a midpoint between open and close
reducing heating and cooling costs. The door will not cycle fully,
providing longer door and operator life.

To Program:

1. Close the door.

2. Turn selector dial to “PROGRAM.”

3. Press the “MID SET” button on logic board.

4. Press the OPEN button, wait until the door reaches the desired
mid stop height, then press the STOP button.

5. Press the “MID SET” button to complete programming.

6. Turn selector dial back to desired wiring type.

NOTE: A momentary open command will open the door fully from the
“Mid Stop” position. Once at the “Mid Stop,” photo eyes and other
safety devices will not open the door beyond the mid stop position,
except in E2 mode. The Timer to Close will work from the Mid Stop.

To clear the Mid Stop set the selector dial to Program and press and
hold the MID SET button for 5 seconds. The MID SET LED will flash
rapidly and turn off once the Mid Stop has been cleared.

DOWN MID STOP

A new feature is the down mid stop which can be enabled with the
purchase of the red/green light kit (RDGRNCARD). See kit
instructions of how to enable this new feature.

TIMER TO CLOSE

Feature: Timer automatically closes door after preset time. All safety
devices must be unobstructed.

Benefit: The door will automatically close after pre set amount of
time. Great for apartment buildings, fire stations and other
applications where the end user wants the door to close
automatically after a specified amount of time.

Requirements: Must have at least one of the following safety devices
attached: CPS-L, CPS-LN4 or CPS3 card with valid safety device.
Wiring type must be set to TS, T or FSTS.

TO PROGRAM MANUALLY (Method 1):

1. Close the door.

2. Turn the selector dial to PROGRAM.

3. Press the TIMER button on the logic board.

4. Press the STOP button to clear the timer.

5. Press the OPEN button for every 5 seconds the operator should wait
before attempting to close the door. Press the CLOSE button for
every 60 seconds the operator should wait before closing the door.

6. Press the TIMER button to complete programming. The
OPEN/CLOSE button LEDs will flash to confirm the timer setting.
The OPEN LED will flash once for every 5 seconds programmed and
the CLOSE LED will flash once for every 60 seconds programmed.

7. Turn the selector dial to desired timer wiring type (TS ,T or FSTS).

Example: To close the door after 70 seconds. Turn selector dial to
Program, press the TIMER button, press the STOP button to clear the
timer, press the CLOSE button once for 60 seconds and press the
OPEN button twice for 10 seconds. Press the TIMER button to finish
programming the timer. Turn selector dial to desired timer wiring type.
(TS, T, FSTS).

23

Operation will vary
depending on
wiring type

SELECTOR DIAL

Operation will vary
depending on
wiring type

SELECTOR DIAL

PROGRAMMING

To prevent possible SEVERE INJURY or DEATH, install reversing
sensors when:

• The radio is used.

• The 3-button control station is out of sight of the door.

• Or ANY other control (automatic or manual) is used.
Reversing devices are recommended for ALL installations.

WARNINGWARNING

WARNING

24

TIMER TO CLOSE

PROGRAM TIMER TO CLOSE BY EXAMPLE (Method 2):
To Program:

1. Close the door

2. Turn the selector dial to PROGRAM.

3. Press and hold TIMER button for 5 seconds until TIMER LED
flashes.

4. Press the OPEN button and wait for the door to reach full open
or mid stop position.

5. Wait for desired amount of time to pass. (An internal stop
watch starts counting when the door stops moving.)

6. Press the TIMER button or CLOSE button to stop the timer.
(TIMER SET LED will turn on.)

7. Turn the selector dial to the desired wiring type.

Example: The door should close 15 seconds after a truck enters a
garage. To program the Timer to Close, turn the selector dial to
PROGRAM, press the TIMER button until the TIMER LED blinks,
press the OPEN button and wait until the door reaches the open
position, wait for the truck to pass through, count 15 seconds and
then press the CLOSE button.

NOTES: To read back the Timer to Close setting, turn the selector
dial to Diagnostic and press the TIMER button. The OPEN LED will
flash once for every 5 seconds programmed and the CLOSE LED
will flash once for every 60 seconds programmed.

CAR DEALER MODE

Feature: The car dealer mode uses the SBC (Single Button
Control input) to bring the door from a closed position to the
programmed Open Mid-Stop position and keep it at that location
even with multiple inputs.

Benefit: Provides energy cost savings by limiting the door
opening height.

Requirements: This feature works in conjunction with the
programmable Timer-to-Close feature. To enable this feature you
must first connect a treadle, photo eye or loop detector accessory
to the SBC input and must have at least one of the following
safety devices attached: CPS-L, CPS-LN4 or CPS3 card with valid
safety device. Wiring type must be set to TS or T.

Requirements:

1. Start with the door in the closed position.

2. Turn the SELECTOR DIAL to PROG.

3. Push the TIMER button and release (Green Timer LED will
belit).

4. Push the MID button and release. This turns on the Car
DealerMode. (The Green Timer LED will flash 6 times
indicating theCar Dealer Mode is turned on)

5. Push the TIMER button and release.

6. Turn the SELECTOR DIAL to the desired wiring type (TS or T).

NOTE: To disable the Dealer Mode follow steps 2 and 3, then
press the MRT button and release (The GREEN TIMER LED will
flash 3 times indicating that the Car Dealer Mode is off).

Operation will vary
depending on
wiring type

SELECTOR DIAL

PROGRAMMING

To deactivate the timer from the open position press the STOP
button. The timer will be reactivated on the next operation
command. To deactivate the timer for more than one cycle, attach
a switch to 11 & 12 (Common and Timer Defeat).

All timer modes require a supervised safety device to be installed.
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.

Operation will vary
depending on wiring type

SELECTOR DIAL

25

MAXIMUM RUN TIMER (MRT)

Feature: The operator can learn the time it takes to open or close
the door plus and an additional 10 seconds.

Benefit: If the operator does not meet its open or close limit
within the set time it will stop, limiting damage to the door and
operator.

To Program:

NOTE: The default setting for the MRT is 90 seconds. In the event
the application requires the MRT be manually learned for a longer
duration follow steps below.

1. Start with the door in the closed position.

2. Set the selector dial to “PROGRAM.”

3. Press MRT button on logic board.

4. Press the OPEN button and wait for the door to reach the full
open limit.

5. Once the door has reached the open position, programming is
complete.

6. Turn dial to desired wiring type.

NOTE: To reset MRT only, turn selector dial to program and press
and hold the MRT button until the MAS led flashes rapidly.

Operation will vary
depending on
wiring type

SELECTOR DIAL

AUTOMATICALLY LEARNED PROGRAMMING

AUXILIARY REVERSAL SYSTEM / RPM SENSOR

Feature: This feature utilizes the RPM sensor connected to the
logic board to detect when the clutch slips and reverses the door
(clutch must be properly adjusted). In addition, the RPM
eliminates the need for a centrifugal switch on 1/3 and 1/2
horsepower single phase motors.

Benefit: The Auxiliary Reversal System reverses the operator
upon hitting an obstruction, preventing excessive door and
operator damage. We require the use of safety devices for
primary safety protection. By removing the centrifugal for 1/3 and
1/2 horsepower single phase motors, the leading cause of motor
failures is eliminated. (Auxiliary Reversal System not applicable
on models GH and GT.)

NOTE: This feature is automatically learned and does not require
programming.

RPM Sensor

Logic Board

OSE OPEN

26

OPTIONAL PROGRAMMING

RESETTING FACTORY DEFAULTS - CLEARING MEMORY

To reset most of the user installed settings back to factory
defaults:

1. Turn the selector dial to DIAGNOSTIC.

2. Press and hold the STOP button for 5 seconds. The MAS LED

will flash momentarily when the factory defaults have been
restored.

3. Return the selector dial to the desired wiring type.

Factory Defaults:

a. Timer to close = 0 seconds
b. CPS-L photo eyes = unlearned
c. The Mid Stop is deactivated
d. The Maintenance Alert System is deactivated
e. The Maximum Run Timer is set to 90 seconds
f. Dealer Mode is deactivated
g. Restoring the operator to Factory Default will also disable this

feature. The remote controls will still be learned.

NOTE: Life of Operator feature (Odometer/Cycle Counter) and
programmed remote controls are not cleared.

Operation will vary
depending on
wiring type

SELECTOR DIAL

RED/GREEN WARNING LIGHT CARD

Feature: The Red/Green warning light card flashes a warning light
for 10 seconds prior to the Timer to Close activating the door to
close.

Benefit: Advanced warning of the door closing helps prevent
traffic collisions with the door.

Light Control Module Operation: The green lights on the OPTION
BOARD will turn on if the board is seated properly and the power
is on. When the door reaches the full open limit or mid stop, the
timer circuit and the green lamp holder will be activated. (Green
lamp will not be activated if timer setting is less than 10
seconds.) The red lamp holder will receive power as indicated at
right.

Requirements: Must have the LiftMaster Red/Green warning light
kit RDGRNCARD and must have at least one of the following
safety devices attached: CPS-L, CPS-LN4 or CPS3. See
Red/Green warning light instructions for further details.

TIMER SETTING RED LAMP HOLDER RECEIVES POWER

Timer setting equals
zero

Activates when the door closes and until
close limit is activated

Greater than 10
seconds

10 seconds before door starts to close
and until close limit is activated

Less than or equal to
10 seconds

Activates when the door reaches the
open limit or mid stop

The red lamp holder receives power
when the door opens and remains
activated if the door is stopped manually
before reaching the mid stop or the open
limit

27

LIFE OF OPERATOR FEATURE
(ODOMETER/CYCLE COUNTER)

The operator is equipped with an odometer to show how many
months and cycles the operator has performed from the time it
was installed. This feature can help determine how long the
operator has been in service.

1. Start with the door in the closed position.

2. Turn the SELECTOR DIAL to DIAG (diagnostic mode).

3. Press and release the MAS button on the logic board.

4. Press and release the MRT button on the logic board.

5. The open and close lights will flash. OPEN for every 5,000
cycles and CLOSE for every 3 months.

6. Return the SELECTOR DIAL to the desired wiring type.

NOTE: If the operator has not reached 5,000 cycles or 3 months,
there will be no indications.

MAINTENANCE SCHEDULE

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

ITEM

Drive Chain

Sprockets

Clutch

Belt

Fasteners

Manual Disconnect

Bearings and Shafts

Safety Reversing
Sensors

PROCEDURE

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

Check set screw tightness.

Check and adjust as required.

Check condition and tension.

Check and tighten as required.

Check and operate.

Check for wear and lubricate.

Check alignment and
functionality.

EVERY 3 MONTHS

OR

5,000 CYCLES







EVERY MONTH



EVERY 6 MONTHS

OR

10,000 CYCLES









EVERY 12 MONTHS

OR

20,000 CYCLES











HOW TO ORDER REPAIR PARTS

OUR LARGE SERVICE ORGANIZATION SPANS AMERICA

Installation and service information are available.

Call our TOLL FREE number:

1-800-528-2806

www.liftmaster.com



Use SAE 30 Oil (Never use grease or silicone spray).

• Do not lubricate motor. Motor bearings are rated for

continuous operation.

• Do not lubricate clutch or V-belt.



Repeat ALL procedures.



Inspect and service whenever a malfunction is observed or
suspected.

To avoid SERIOUS PERSONAL INJURY or DEATH from
electrocution, disconnect ALL electric power BEFORE
performing ANY maintenance.

WARNING

WARNINGWARNING

28

DIAGNOSTIC CHART

The logic board has several LEDs to assist in the installation and troubleshooting of the operator. The following chart should assist in
verifying the operator is functioning properly. Turn the selector dial to DIAGNOSTIC to keep the door from moving while
troubleshooting.

TROUBLESHOOTING

Power Green Indicates that power is being generated for the logic board.

Stop Green Indicates a closed circuit between common and terminal 5. Pressing stop should turn off this LED.

Open Yellow Indicates a closed circuit between common and terminal 7. Pressing the open button should turn

ON this LED.

Close Yellow Indicates a closed circuit between common and terminal 6. Pressing the close button should turn

ON this LED.

Eyes Green Solid on indicates photo eyes learned. Flashing indicates photo eyes need to be connected or obstructed.

Solid off indicates no eyes learned.

Timer Defeat Yellow Solid on indicates a closed circuit between common and terminal 12. Timer to close will not close.

OLS Yellow Pressing the Open Limit Switch should turn ON this LED.

CLS Yellow Pressing the Close Limit Switch should turn ON this LED.

SLS Yellow Pressing the Sensing Limit Switch should turn ON this LED.

Edge Yellow Indicates a closed circuit between common and terminal 8. Pressing the edge should turn ON this LED.

Mid Stop Yellow Solid on indicates door is stopped on up or down mid stop. Flashing indicates MID STOP is being set.

Timer Enabled Green Solid on indicates TIMER is programmed and will activate from open or mid stop position. Flashing

indicates Timer is counting down and door will close after preset time.

SBC Yellow Indicates a closed circuit between common and terminal 1. Pressing the single button control station

should turn ON this LED.

MAS Yellow Indicates the Maintenance Alert System has been activated or an error code has been triggered.

Relay A Yellow Indicates open or close command has been given to the motor. LED turns on when OPEN/CLOSE button is

pressed.

Relay B Yellow Indicates open or close command has been given to the motor. LED turns on when OPEN/CLOSE button is

pressed.

LED COLOR DEFINITION

29

TROUBLESHOOTING GUIDE

THE OPERATOR WILL
NOT RESPOND TO ANY
COMMANDS

POWER LED IS NOT ON

STOP BUTTON LED IS
NOT ON

THE DOOR WILL MOVE
ABOUT A FOOT THEN
STOP. AFTER STOPPING,
ONLY CONSTANT
PRESSURE COMMANDS
WILL MOVE THE DOOR

THE DOOR WILL MOVE
MOST OF THE WAY
TOWARDS A LIMIT THEN
STOP. AN EXTRA OPEN OR
CLOSE COMMAND IS ABLE
TO GET DOOR TO
COMPLETE CYCLE

THE DOOR WILL OPEN
SOME BUT NOT
COMPLETELY. AN EXTRA
OPEN IS ABLE TO GET THE
DOOR TO OPEN
COMPLETELY

THE DOOR WILL OPEN BUT
WILL ONLY CLOSE AFTER
A FIVE SECOND DELAY
WITH CONSTANT
PRESSURE ON THE CLOSE
BUTTON

a) No power supply

➤ Verify primary line voltage from power source.

b) Operator control station is wired wrong

➤ Use the OPEN, CLOSE and STOP LEDs to help check correct wiring.

Verify that the board is accepting commands by using the onboard
station. Green light next to stop button must be on.

c) Interlock switch is activated

➤ Check Interlock(s). If more than one external interlock is present they

must be wired in series.

d) Dial still in programming or diagnostic

➤ Set dial to desired wiring type.

mode

e) Motor is malfunctioning

➤ Verify proper voltage getting to the motor (Check motor name plate).

f) Motor thermal overload tripped

➤ Check for obstructions and verify the door moves freely. Cycle operator

in constant pressure one full cycle open and close to reset fault. Check
to see if motor is hot. Allow motor to cool before attempting to move
door.

g) Failsafe switch is activated requiring

➤ Move switch to non-failsafe or connect a failsafe sensing device.

photo eyes

h) Off Board relay may need to be

➤ When the OPEN or CLOSE button is pressed, Relay A or B LED should

replaced see wiring diagram turn on and the door should move in the corresponding direction. If

Relay A or B lights and the door does not move, off board relay may
need to be replaced (see wiring diagram Off Board Relays).

i) Possible accessory malfunction

➤ Disconnect all devices, reattach them one at a time testing for a failure

after each one is replaced.

j) Possible logic board failure

➤ Replace logic board.

a) Control station not connected or wired

➤ Check wiring to control station.

correctly

b) Interlock switch

➤ Check interlock switch(es) for continuity.

a) The photo eyes, edge or other sensing

➤ If the on board EYES LED is flashing, the photo eyes are misaligned or

device is obstructed or activated not connected. Remove any obstructions, check the safety device wires

for continuity and shorts.

b) The logic board thinks that the direct

➤ Unlearn the photo eyes from the memory by resetting factory defaults.

connect photo eyes are attached and
blocked

c) Failsafe switch set

➤ Slide switch to Non-Failsafe mode.

FAULT POSSIBLE CAUSE FIX

RPM sensor is not connected properly ➤ Check the RPM assembly for loose connections. Check that RPM wheel
or may need to be replaced is turning when operator is running. Check for foreign matter blocking

optical lens.

➤ Replace RPM sensor.

The Maximum Run Timer is not set

➤ Manually reprogram the Maximum Run Timer (page 25).

correctly OR reset the factory defaults (page 26).

There may be a Mid Stop set

➤ Check to see if the Mid Stop LED is on. Clear the Mid Stop by turning

the selector dial to program. Press and hold the MID STOP button for
5 seconds. Return dial to desired wiring type.

a) Loose secondary wiring connections

➤ Repair or replace connections or control transformer.

or a faulty control transformer

b) Logic board failure

➤ Replace logic board.

c) Interlock switch

➤ Check interlock(s).

30

TROUBLESHOOTING ERROR CODES

Logic 3.0 operators incorporate a self diagnostic feature built into
the MAS LED. In addition to indicating when routing maintenance
is due, the MAS LED can be used to troubleshoot some problems
with the operator.

If the MAS LED is flashing on and off rapidly, the Maintenance
Alert System has been triggered and the schedule operator
service is due. If the MAS LED flashes 2 or more pulses in a row

ERROR CODE DESCRIPTION EFFECT DISPLAY CORRECTION

E1 MAS triggered (cycles or months) None normal operation 1 blink Reset MAS.

E2 No RPM input during opening or closing The door only responds to 2 blinks Clutch is slipping,

constant pressure commands. adjust clutch, or verify RPM

sensor connection or replace
RPM sensor.

NOTE: To relearn the RPM
sensor, move the door with a
constant pressure command.
The door will stop once
relearned and normal
operation will resume.

E3 (MRT) Maximum Run Time timed out The door stops before reaching 3 blinks First check Operator

the desired time. for any faults (i.e., Bad Limit

switch), manually learn Max
Run Timer (page 25)
OR reset factory defaults
(page 26).

E4 Obstruction sensed on closing Operator will be in the OPEN 4 blinks Cleared by removing

position. obstruction or realigning

photo eyes and giving a close
command.

E5 Stuck key button pressed for greater than Stuck key on 3-button station 5 blinks Stuck key must be

2 minutes. will not respond. unstuck before it will be

recognized as an input.

E6 Rotary dial in invalid position for greater The door will not respond to 6 blinks Rotary dial must be

than 30 seconds. the 3-button station or any set to a valid position.

other input.

E7 Failsafe Safety device faulted or not Normal operation (5 second 7 blinks Cleared when safety

connected for greater than 2 minutes constant pressure override device is cleared or

required to close). connected.

E8 Brownout Detected Operator will run as long as 8 blinks 1. Check AC line for

enough power is present. voltage.

2. Check transformer
secondary for low voltage. To
many accessories may be
connected to the transformer.

E9 Motor movement at invalid time Operator will continue to Flash on start Check relays and the

function normally for 5 operations of movement drive circuitry to insure
and then default to a constant that they are turning off.
pressure mode. Operator must run correctly

for two starts for the error to
be cleared.

followed by a pause, an operator error has occurred. To view how
many errors currently exist, turn the selector dial to DIAGNOSTIC
and press the OPEN button. To read out each individual error
code (if more than one exists) press CLOSE. It is possible to have
more than one error at a time.

The chart below can assist with identifying the flashes on the
MAS LED.

NOTES: Error codes take priority over normal MAS LED operation. Error codes will repeat on the MAS every 1.5 seconds until cleared.
There may be more than one error present, but only the highest priority will flash. If the highest error is cleared, the next highest will
flash. All errors self-correct when the corrective action is taken and a reset is not needed.

31

TROUBLESHOOTING RADIO FUNCTIONALITY

The error codes will display at the radio LED.

NOTE: Radio receiver is compatible with 315MHz remotes

ERROR CODE SYMPTOM DISPLAY POSSIBLE PROBLEM CORRECTION

R1 No response from the remote Quick Flash Unlearned remote - Try re-learning the

A user tries to use a remote, remote (page 20).
but the RADIO LED only flashes
briefly and there is no response
from the operator.

R2 No response from the remote No LED Cannot recognize remote - Replace battery - OR -

activity A weak signal caused by a eliminate interference - OR-

discharged battery or outside obtain a qualified remote.
interference with the
radio - OR - the radio
being learned is not compatible
with the operator.

R3 The remote cannot be learned Radio LED Cannot recognize remote - Replace battery - OR -

turns off after A weak signal caused by a eliminate interference - OR­30 seconds discharged battery or outside obtain a qualified remote.

interference interfering with the
learn process - OR - the radio
being learned is not compatible
with the operator.

R4 The remote cannot be learned 2 Blinks No free records - Erase all learned remotes

A user enters RADIO function and re-learn the desired
learning mode but there is no remote.
space left to add another remote.

R5 The remote cannot be learned 3 Blinks Duplicate remote - This remote already has a

A user enters RADIO function function associated with it. To
learning and selects the function change the function, erase all
to be learned. When the remote learned remotes and
button is pressed for learning, a re-learn the desired remote.
search reveals that remote
is already learned.

R6 Cannot close via constant pressure in IR LED flashes No safety device present - Obtain direct connect eyes or

C2, D1 or E2 modes. A safety device is required to a CPS3 device - OR - change

close via constant pressure. to a mode that does not

require constant pressure.

32

ELECTRICAL BOX

(K72-10047-1)

(K72-12515-1)

9

10

6

7

5

4

2

K2

3

8

11

1

K1

33

ELECTRICAL BOX LOGIC (VER 3.0)

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.

SERVICE KITS

ITEM PART # DESCRIPTION

K1 K72-10047 Limit shaft kit

K72-10047-1 Limit shaft kit (3 HP)

Complete with: Limit shaft, limit nuts,
limit bearings, limit sprocket,
interrupter cup, shim washers,
compression ring, roll pin,
and e-rings.

K2 K72-12515-1 Limit switch kit

Complete with: Limit nut retainer,
switch plates, backup plate, depress
plates, limit switches, standoffs,
screws, and locknuts.

*To order a complete electrical box kit, add a K- prefix to the

model number of your operator. For example:
T5011L3 (Operator) = K-T5011L3 (Electrical box kit)

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION

1 13-10024 Limit nut
2 23-10041 Limit switch
3 K75-32268 Cover
4 21-14182 Transformer, 115/230V

21-35057 Transformer, 460V
21-5575 Transformer, 575V

5 29-31244 Relay 24Vdc DPST - (A & B relay)

all operators

6 29-31245 Relay 12Vdc SPDT - (C & D relay)

3 Phase only

29-31229 Relay 24Vdc SPDT - (C relay)

1 Phase only
7 K74-31243 MOV 580V
8 K79-15016-1 RPM sensor assembly
9 K1A5729 Logic board - Logic 3
10 K2A761 Coaxial cable
11 K1C3196-3 Antenna

*Non stocked item. Please allow additional delivery time.

21

(K72-12508
K72-12509)

(71-B120
71-B240)

34

MODEL T

K5 (K75-12870)

(K72-12507
K72-12506)

(K75-10177)

22

19

20

18

K4

K5

15

17

12

13

4

12

14

16

18

11

5

K3

3

10

8

5

23

9

K3

6

K1

7

2

1

K2

35

REPAIR PARTS KITS - MODEL T

SERVICE KITS

ITEM PART # DESCRIPTION

K1 71-B120 Brake kit - 115 Volt models

71-B240 Brake kit - 230-460 Volt models
71-B575 Brake kit - 575 Volt models

Complete with: Brake hub kit, brake
release lever, brake disk, spring cup,
studs, compression springs, brake
solenoid, solenoid cover, spacers,
mounting plate, pressure plate, feather
key and conduit.

K2 K75-10177 Brake hub kit

Complete with: Brake hub, set screw,
push on fastener and feather key.

K3 K72-12506 Clutch shaft kit (1/3 & 1/2 HP)

Complete with: Clutch plate, clutch
shaft, bearing 3/4" I.D., sprocket
41B10x3/4", 5L belt, motor pulley,
spring, clutch disc, shim washers,
castle nut, flatwashers, cotterpin, roll
pins and push on fastener.

K72-12507 Clutch shaft kit (3/4 & 1 HP)

Complete with: Same as kit above.

K4 K72-12508 Output shaft kit (1/3 & 1/2 HP)

Complete with: Output shaft, bearing,
roller chain with master link, limit
chain, shim washers, roll pins, push
ring 3/4" and sprockets (41B32 &
48B10).

K72-12509 Output shaft kit (3/4 & 1 HP)

Complete with: Same as kit above.

K5 K75-12870 Door arm kit

Complete with: Curved arm, straight
arm, door bracket and hardware.

NOT SHOWN

DOOR HEIGHT #48 CHAIN #41 CHAIN

(1/3 & 1/2 HP) (3/4 & 1 HP)

Doors 8' to 10' 19-5810 19-5112
Doors to 12' 19-5812 19-5112
Doors to 14' 19-5814 19-5114
Doors to 16' 19-5816 19-5116
Doors to 18' 19-5818 19-5118
Doors to 20' 19-5820 19-5120
Doors 20' to 24' 19-5824 19-5124

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION

1 22-120 Brake solenoid, 115V

22-240 Brake solenoid, 230-460V

22-575-1 Brake solenoid, 575V
2 80-14414 Feather key
3 10-10166 Clutch plate
4 11-10014 Clutch shaft
5 12-10029 Bearing 3/4" I.D.
6 15-41B10G1 Sprocket, 48B10 x 3/4"
7 16-5L300 Cogged belt
8 17-10165 5L Motor pulley 7" O.D.
9 18-10164 Spring, clutch (1/3 & 1/2 HP)

18-10168 Spring, clutch (3/4 & 1 HP)
10 39-10167 Clutch disc
11 87-P-075 Push on fastener

12 12-10331 Bearing, flange
13 15-41B10G1 Sprocket, 41B10 x 3/4" (3/4 & 1 HP)

15-48B10GXX Sprocket, 48B10 x 3/4" (1/3 & 1/2 HP)
14 15-48B32GXX Sprocket, 48B32 x 3/4"
15 15-48B10G1 Sprocket, 48B10 x 3/4"
16 19-41047 Roller chain, #41 x 47 pitches
17 19-48033 Limit chain, #48 x 33 pitches
18 75-10170 Trolley
19 75-10174 Front Idler Assembly
20 K75-10259 Tracker Spacer
21 10-10205 Header Bracket
22 11-10130 Header Pivot Pin
23 K20-1033B-2LPMotor - models T3311L3, T3321L3

K20-3033B-4P Motor - models T3323L3, T3343L3

K20-3033M-5 Motor - model T3353L3

K20-1050B-2LPMotor - models T5011L3, T5021L3

K20-3050B-4P Motor - models T5023L3, T5043L3

K20-3050M-5 Motor - model T5053L3

K20-1075B-2LPMotor - models T7511L3, T7521L3

K20-3075B-4P Motor - models T7523L3, T7543L3

K20-3075M-5 Motor - model T7553L3

K20-1100B-2LPMotor - models T1011L3, T1021L3

K20-3100B-4P Motor - models T1023L3, T1043L3

K20-3100M-5 Motor - model T1053L3

NOT SHOWN

01-19458 Owner’s Manual - English

01-19458SP Owner’s Manual - Spanish

01-19458FR Owner’s Manual - French

DOOR DRIVE CHAIN KITS

©2008, The Chamberlain Group, Inc.

01-19458J All Rights Reserved

CONTROL CONNECTION DIAGRAM

n

IMPORTANT NOTES:

1. The 3-Button Control Station provided must be connected for operation.

2. If a STOP button is not used, a jumper must be placed between terminals 4 and 5.

3. When adding accessories, install them one at a time and test each one after it is added to ensure proper installation and operatio
with the Commercial Door Operator.

3 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER AND STOP BUTTON

STANDARD

(RED)

Maintenance

Alert LED

(WHITE)

2 OR MORE KEY LOCKOUT

7 6 4 5

7 6 4 5

10

10 10

(RED)

Open

Close

Stop

(RED)

Maintenance

Alert LED

(WHITE)

Open

Close

Stop

Open

Close

Stop

Maintenance

Alert LED

(WHITE)

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

7 6 4

STANDARD

7 6 4

2 OR MORE

7 6 4 5

Open

Close

Stop

Keyswitch

D1 & E2

MODE ONLY

Open

Close

See note 2.

Open

Close

Open

Close

1 BUTTON STATION OR ANY AUXILIARY DEVICE RADIO CONTROLS

OPEN / CLOSE

OPEN / CLOSE

1

4

R1 R2 R3

B2, T, TS & FSTS

MODE ONLY

Any Commercial Type

See note 2.

SENSING DEVICE TO REVERSE OR STOP

Note: 11 and 4 are both the same common.

Either is acceptable.

11

8

LiftMaster Brand Receiver

EXTERNAL INTERLOCK

Remove Factory Installed Jumper

When Interlock is Used

2

3

Sensing Device

ONE 2 OR MORE

All Wiring Types

D1 & E2

MODE ONLY

See note 2.

2

3