Lift-Master HTL User Manual

©

OWNER'S MANUAL

MODEL HTL

SOLID STATE

HEAVY DUTY

BELT DRIVEN TROLLEY OPERATOR

The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126

Serial # ___________________
(located on electrical box cover)

Date of Installation __________
Wiring Type________________

COMMERCIAL DOOR OPERATOR

®

LISTED
NOT FOR RESIDENTIAL USE

SPECIFICATIONS

MOTOR

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

HORSEPOWER:...............1/3, 1/2, 3/4 & 1Hp

Single or Three Phase

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

VOLTAGE:........................115/208-230 Single Phase

208-230 Three Phase

CURRENT:........................See Pg. 17

MECHANICAL

DRIVE REDUCTION:

1st Reduction:....................Heavy Duty (4L) V-Belt

2nd Reduction:...................#48 Chain and Sprockets

Output:................................#48 Chain on 1/3 & 1/2 Hp

#41 Chain on 3/4 & 1 Hp

OUTPUT SHAFT SPEED:...144 R.P.M.

DOOR SPEED:....................11" – 13" per sec.

BEARINGS:............................Bronze Bearings on

Clutch Shaft
Ball Bearings on Output Shaft

BRAKE:...............................Optional Solenoid drum brake

Standard on 3/4 & 1Hp
Optional on 1/3 & 1/2Hp

ELECTRICAL

CONTROL VOLTAGE:......5V dc

AUXILIARY VOLTAGE: ....24V dc

CONTROL STATION:........3 Button

OPEN/CLOSE/STOP, NEMA 1

WIRING TYPE: ..................B2 (Standard)

Momentary Contact to OPEN/CLOSE/STOP plus
Wiring for Sensing Device to Reverse and Auxiliary
Devices to Open and Close with Open Override
(Other types available. See chart.)

LIMIT ADJUST: ...................Linear Driven, Fully

Adjustable Screw Type Cams. Adjustable to 22 feet.

SAFETY

DISCONNECT:..................Spring Loaded Trolley

Disconnect Arm

CLUTCH:...........................Adjustable Friction Type

REVERSING EDGE:.........(Optional)

Electric or Pneumatic Sensing Device attached to the
Bottom Edge of Door.

A REVERSING EDGE IS STRONGLY
RECOMMENDED FOR
OPERATOR INSTALLATIONS.
THE 3 BUTTON CONTROL STATION IS OUT OF
SIGHT OF DOOR OR ANY OTHER CONTROL
(AUTOMATIC OR MANUAL) IS USED. SEE PAGE 8.

ALL

COMMERCIAL

REQUIRED

WHEN

WEIGHTS AND DIMENSIONS

POWER HEAD WEIGHT..........55 LBS.

14.5"

13.75"

9.5"

with or

without

brake

27.4"

with

brake

16.1"

9"

C

L

16.25"

DOOR HEIGHT + 4' - 2 3/8"

13"

MIN. CLEARANCE OF 2"
FROM HIGH ARC OF DOOR
TO BOTTOM OF TRACK

7-1/2"

2

ASSEMBLE TRACK AND OPERATOR

Track

Track

Spacer

Trolley

Track Idler

Shaft

Header
Bracket

Idler Shaft

Bracket

FIGURE 1

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.

WARNING

DO NOT CONNECT ELECTRIC POWER UNTIL
INSTRUCTED TO DO SO.

If possible, install the door opener 7 feet or more
above floor with the manual release handle
mounted 6 feet above the floor.

Check the identification tag mounted on the electrical
box to be sure the voltage, phase and h.p. are correct
for your needs.

1. Fasten track to the operator frame. DO NOT
TIGHTEN BOLTS. See Figure 1.

2. Position the trolley on the track. Attach track
spacer(s).

3. Place idler shaft bracket over end of track. There
are two holes on each side of bracket (Fig. 1).

Fasten shaft bracket to end of rail assembly.

4. Align track so that trolley moves easily and does
not bind. Tighten all bolts.

5. Run chain around front and rear sprockets and
attach to trolley assembly with master links. Adjust
chain only until excessive slack is removed. To
retain proper tension, tighten 3/8" lock nut.

3

INSTALL OPERATOR

CAUTION: AT LEAST TWO PERSONS AND A STRONG, SAFE WORKING PLATFORM ARE
REQUIRED FOR THE INSTALLATION OF OPERATOR.

CAUTION

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.

DO NOT RUN THE OPERATOR BEFORE MAKING
LIMIT SWITCH ADJUSTMENTS.

FOR METAL BUILDINGS ONLY: A strong mounting

surface for the operator front header bracket is
needed. On the wall above the center stile, weld or
bolt a 2"x2"x1/4" piece of angle iron or another
suitable, heavy-duty material as shown in Figure 2.

6. Draw a vertical line on header (or reinforcement
material) above center stile of door.

7. Raise the door to its high arc point. Use a
carpenter's level to locate high arc point on wall
above door center stile as shown in Figure 3. Make
a horizontal line, intersecting the vertical centerline
mark.

FIGURE 2

FIGURE 3

Building
Support

2"x 2"x 1/4"

Carpenter's

Angle Iron

Level

Vertical

Centerline

Center

Stile

Header

Wall

High Arc

Point

FIGURE 4

Header

2" Header

Wall

Bracket

High Arc

Point of Door

8. Close the door and refer to Figure 4. Position
operator chassis on the floor with the bottom edge of
header bracket 2" above horizontal mark and
centered on vertical line. Mark mounting holes.

FOR METAL BUILDINGS: Drill 3/8" holes for fastening
bolts. FOR CONCRETE BUILDINGS: Drill 3/8" holes
for anchor bolts, following manufacturer's instructions.

NOTE: Be sure header bracket is level before
tightening the bolts.

4

9. Raise operator straight up until the door can be
raised to the full open position. See Figure 5.
Temporarily secure to ceiling or rafters with rope
or other suitable means.

WARNING

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

10. Raise door to full open position. Place a 2x4
board on top of leading edge of door. Lower
operator to rest on 2x4 board.

Make four hangers from 2"x2"x1/4" angle iron. IT IS

RECOMMENDED THAT RAIL BE CENTER­SUPPORTED AS WELL. Bolt the operator into place.

Building
Support

COIL CORD (OPTIONAL)

REFER TO (A) IN ILLUSTRATION

Connect operator end of coil cord to junction box (not
supplied) fastened to the wall approximately half-way
up the door opening.

Electrician must hardwire the junction box to the
operator electrical box in accordance with local
codes.

REEL (OPTIONAL)

REFER TO (B) IN ILLUSTRATION

Take-up reel should be installed 12" above the top of
the door.

2"x2"x1/4"
Angle Iron

Door

Bracket

Center

Stile

Trolley

Door

Arm

Wire 5V dc

Track

Spacer

Rope

Release

Air Hose

B

A



Hanger Angles

2"x2"x1/4"

Reversing

Edge

Pneumatic Air Switch

Not Required or Supplied

When Electric Reversing

Edge is Used

FIGURE 5

5

CONNECT OPERATOR TO POWER SUPPLY AND INST ALL CONTROL STA TION

WARNING

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.

INSTALL THE CONTROL STATION WHERE THE
DOOR IS VISIBLE, 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,

EDGE MUST
THE DOOR.

EDGE UNDER THESE CIRCUMSTANCES MAY
RESULT IN SERIOUS INJURY OR DEATH TO
PERSONS TRAPPED BENEATH THE DOOR.

BE INSTALLED ON THE BOTTOM OF

FAILURE TO INSTALL A REVERSING

WARNING

A REVERSING

CAUTION

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.

DO NOT ALLOW TROLLEY TO OVERRUN FRONT
IDLER SPROCKET OR RUN INTO OPERATOR HEAD.
LIMIT SWITCHES MAY NOT BE IN THE PROPER
POSITIONS. (See Limit Adjustments).

REFER TO MASTER WIRING DIAGRAM.
MAKE CONNECTION THROUGH THE 1-1/16" DIA. LABELED HOLE. DO NOT RUN CONTROL WIRES IN THE SAME
CONDUIT AS THE POWER WIRES.

11. Complete the electrical connections to operator and

control station (Refer to Control Connection Diagram,
Pg. 20). Fasten the control station to the wall.

FASTEN THE WARNING NOTICE BESIDE OR
BELOW THE PUSH BUTTONS.

Push

Buttons

OPEN

CLOSE

12. Apply power to operator. Press either the OPEN or

the CLOSE push button and observe direction of

STOP

trolley travel. Press the STOP button.
If trolley did not move in the correct direction, check

for improper wiring at control station or between
opener and control station.

If the operator is three phase and control station
wiring is correct, exchange any two of the three
incoming power leads.

If electrical problems persist, call our Toll Free number
(1-800-528-6563) for assistance.

13. Operate push button so that the trolley moves forward
(toward close position). Press STOP button when
trolley is approximately 10" from front wall.

CAUTION

Control Station

WARNING

TO PREVENT ENTRAPMENT

DO NOT START DOOR DOWNWARD

UNLESS DOORWAY IS CLEAR

WARNING Notice

CONNECT DOOR ARM AND BRACKET

CAUTION

REINFORCE CENTER STILE WITH A VERTICAL
BRACE. USE A PIECE OF ANGLE IRON THAT WILL
SPAN THE HEIGHT OF TOP PANEL. DO NOT CUT
HORIZONTAL STRUT.

14. With door CLOSED, snap door arm onto operator
trolley. Position door bracket against reinforced
center stile of top section of door. Make sure arm is
straight and centered on stile. Mark bracket holes.
Drill and fasten with 5/16" bolts.

NOTE 1: Choose a set of holes which aligns door
arm in a near vertical position.

NOTE 2: If door strut interferes with placement of
door bracket, position bracket below strut. DO NOT
CUT OR MODIFY STRUT.

Attach door arm to door bracket using 3/8"-16x1" screw
and lock nut.

Trolley

Door

Bracket Reinforcement

Center Stile

6

Door Arm

Brace

EMERGENCY DISCONNECT SYSTEM

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

Trolley

Track

WHEN PULLING THE EMERGENCY RELEASE.

WARNING

Header
Bracket

Emergency
Disconnect

Door

Bracket

12B0407

Door

Clevis

Pin

Straight

Door Arm

Assembly

1C3681

Curved

Door Arm

178B0045

NOTICE

Chain

Emergency

Release Handle

ADJUST LIMITS

WARNING

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

OLS

Open Limit

Switch

Actuator

Close Limit

Switch

Actuator

CLS

SLS

CLOSEOPEN

Emergency
Disconnect

TO DISCONNECT 

DOOR FROM OPENER

Pull emergency release handle

Door Arm

straight down. Emergency

disconnect will open.

Emergency

Disconnect

Door Arm

Lift free end of door arm to trolley.

TO RECONNECT

DOOR ARM TO TROLLEY

Pull emergency handle to allow arm 

to engage clevis pin. Release handle. 

Emergency disconnect will close.

MAKE SURE THE LIMIT NUTS ARE POSITIONED
BETWEEN THE LIMIT SWITCH ACTUATORS
BEFORE PROCEEDING WITH ADJUSTMENTS.

1. Depress open limit switch. The operator should
stop.

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. Be sure
close limit actuator is engaged as door fully seats
at the floor.

If other problems persist, call our toll-free number for
assistance - 1-800-528-6563.

Close Limit

Nut

Travel Nut

Retainer

Open Limit

Nut

Press Travel Nut Retainer

Down Toward Frame

TO DISENGAGE.

7

ADJUST CLUTCH

Adjust clutch so that it is tight enough to open and
close the door but will slip when the door meets an
obstruction. Either loosen or tighten the clutch nut
with 1/4 turn increments. The clutch will require
periodic inspection and adjustment.

CAUTION: The adjustable friction clutch is NOT
an automatic reversing device. An electric or
pneumatic reversing edge can be added to
bottom edge of door if desired.

CONNECT REVERSING EDGE DEVICE (OPTIONAL)

WARNING

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,

ON THE BOTTOM OF THE DOOR.

A REVERSING EDGE UNDER THESE CIRCUMSTANCES
MAY RESULT IN SERIOUS PERSONAL INJURY OR
DEATH TO PERSONS TRAPPED BENEATH THE DOOR.

A REVERSING EDGE MUST BE INSTALLED

FAILURE TO INSTALL

Clutch Pad

Clutch Plate

Jam Nut

Adjusting Nut

Spring

Washer

Clutch Pulley

The operator has been pre-wired to accept
connection of a reversing edge device (Figure 5,
Page 5). Connect the normally open contacts to
terminals T4 and T8 on the low voltage terminal
block. A cut-off switch will de-activate the safety
device during the last few inches of the door's
downward travel.

MAINTENANCE SCHEDULE

Check at the intervals listed in the following chart.

EVERY EVERY EVERY

ITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHS

Drive Chain 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 ●✔

✳ 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.

8

BRAKE INSTALLATION & ASSEMBLY PARTS

HTL/APT Shown

WARNING

TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRICAL
POWER TO OPERATOR BEFORE PROCEEDING.

1. Install brake drum on clutch pulley shaft as
illustrated in Fig. A.

2. Attach the three spacers provided to back of brake
assembly housing using three 5/16 x 5/8 sems
screws (Figs. B and C).

3. Push brake lever engaging nylon stud release
between brake shoes and align brake drum
between brake shoe assembly (Fig. B).

4. Adjust spring loaded bolt on brake shoe assembly
so that spring is compressed to 1".

5. Mount brake assembly housing with spacers
attached to operator frame using three 5/16 x 5/8
sems screws (See Fig. B).

6. Remove plug from 7/8" hole in electrical box and
attach conduit assembly.

7. Connect wires per master wiring diagram.

8. Reconnect power to the operator.

9. Test for proper brake operation and replace brake
cover.

ADJUSTMENT: The brake assembly is self­adjusting and should not require further
adjustment.

A

3/4" Washer

B

Nylon

Stud

Release

5/16" x 5/8"

SEMS Screw

C

Cotter

Pin

3/4" Washer

Brake Drum

Push Brake Lever

to Disengage Brake

Shoe Assembly

Brake Shoe

Assembly

1

Brake

Drum

2

APT Bearings Shown.
Models HTL and APT

Brake Installation Identical

Clutch

Pulley Shaft

Cotter

Pin

5/16" x 5/8"

SEMS Screw

Spacer

Operator

Frame

11

REPAIR PARTS FOR BRAKE ASSEMBLY

ITEM PART NO. DESCRIPTION & QUANTITY

1 17D111 Brake Box (1)
2 204B118 Solenoid 115V (1)

204B118-1 Solenoid 230V (1)
3 113B49 Brake Lever Pivot (1)
4 179A46 Brake Release Stud
5 142A143 Brake Stud Plate (1)
6 1B4421 Brake Shoe Assy. (2)

12

8

3

4

10

7

6

5

ITEM PART NO. DESCRIPTION & QUANTITY

7 60B31 Brake Drum (1)
8 179B45 Brake Pivot Stud (3)

9 184A111 Brake Spacer (3)
10 1B4726 Conduit Assy. H-Series (1)
11 31D387 Cover (1)

12 31A388 Dome Plug (1)

9

9

SOLID STATE SINGLE PHASE 

WIRING DIAGRAM

OPEN

NC

White

Gry./Wht.

2

Yellow

Red

Yellow

3

Blue

Brown

1

RADIO CONTROL

LIMIT

SWITCH

C

POWER

INDUCTOR

Yellow

Red

White

Blue

NO

Remove Jumper

to Install Interlock

Blue

White

Blue

White

Yellow

Red

Black

E10

P1-

P7-

15

P6-

E12

Q7

E8

E9

P3-

P2-

U1

4

12345678910

TB1-

1

Open / Close

Orange

Q8

E14

E11

234
1

ON

Open

Close

Sensing Device

Yellow

White

Red

Q9

E13

P4-

OFF

Stop

White

E17

E16

NC
NO

Red

White

White

Q10

E15

E1

E2

E3

SENSING

SWITCH

E20

E19

LIMIT

C

NC
NO

Yellow
Orange
White

Q11

E18

N

L1

H

L3 L2

E4

E21

XMFR SECONDARY

CLOSE

LIMIT

SWITCH

C

*

Black

Black

Red

White
Black
White White

Neutral 115V
208-230V, 1Ø

Hot 115V
208-230V, 1Ø

Black

Black

Blue

Yellow

E6 E7

Yellow

Black

Black

Black

Black

Black 115V

Orange 208-230V

Blue

Blue

Yellow

Internal Interlock

(when used)

OVERLOAD

PROTECTOR

Blue

MOTOR

*THIS WIRE NOT USED 

WITH POWER INDUCTOR

RedRedRed

OrangeOrange

TO
MECHANICAL
BRAKE

GND

White

Orange 115V

Black 208-230V

LINE

TRANSFORMER

LOAD



10

STANDARD POWER AND

CONTROL CONNECTION DIAGRAM

(Solid State Board CDO - 115V, 208-230V, 1Ø)

123

RADIO CONTROL

(24V dc only)

TB1-

Remove Jumper

to Install Interlock

12 345678 910

Open

Close

Open / Close

Stop

Sensing Device

L1 N

L2 H

L3

GND

Neutral 115V, 208-230V, 1Ø

Hot 115V, 208-230V, 1Ø

The Chamberlain Group, Inc.
1Ø Standard Power & Control Connection Diagram
Solid State CDO
2/22/94 - 2/25/94

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference, in which case the user will be required to correct the interference at his own expense.

11

SOLID STATE THREE PHASE

WIRING DIAGRAM

OPEN

NC

LIMIT

SWITCH

C

NO

Blue

White

Yellow

White

White

NC

NO

Red

White

White

SENSING

LIMIT

SWITCH

C

NC
NO

CLOSE

LIMIT

SWITCH

C

*THIS WIRE NOT USED ON 3/4 HP

AND ABOVE WITH POWER INDUCTOR

Blue

Yellow

Orange

Blue

White

Yellow

POWER

INDUCTOR

Red

Yellow

Red

White

Blue

Blue

White

Yellow

E10

P1-

P7-

P6-

Red

Yellow

Yellow Yellow

Orange

Q7

Q8

E12

E14

E11

E9 E8

Red

1/3 &1/2 HP ONLY

U1

P3-

P4-

234
1

ON OFF

P2-

51

41

12345678910

TB1-

Q9

E13

E16

E17

Red

Q10

E15

E3

Black

MOTOR

Red

Yellow

1/3 & 1/2 HP ONLY

Orange

Yellow

Yellow

T1

T2

Black

White

*

Black

Q11

E18

E20

E19

E1

L1

E2

Red

Orange

Black
White
White

N

208-230V, 3Ø

H

208-230V, 3Ø

White

T3

Black

96

Blue

95

3/4 HP

& Above

OVERLOAD

3/4 HP & Above

RedRed

Orange

TO
MECHANICAL
BRAKE

Black

**

**THIS WIRE NOT USED ON 1/3 & 1/2 HP

WITH POWER INDUCTOR

White

GND

L1

Black

L2

Wht.

L3

208-230V, 3Ø

L3 L2

E4

E21

Black

White

E5

Black

Orange

Black

E7

Blue

Black

Black

Blue

White

Orange

208-230V

YellowYellow

Black

LINE

Yellow

E6

XMFR SECONDARY

TRANSFORMER

Brown

1

Yellow

Gry./Wht.

3

2

RADIO CONTROL

Open / Close

Open

Close

Stop

Sensing Device

Black

Blue

12

Blue

Yellow

Blue

Yellow

Internal Interlock

(when used)

External Interlock

(if required)

LOAD

STANDARD POWER AND

CONTROL CONNECTION DIAGRAM

(Solid State Board CDO - 208-230V, 3Ø)

123

RADIO CONTROL

(24V dc only)

TB1-

12 345678 910

Open

Close

Open / Close

Stop

Sensing Device

L1 N

L2 H

L3

GND

208-230V, 3Ø

208-230V, 3Ø

208-230V, 3Ø

OPTIONAL SETTINGS

Set Maximum Run Timer

Begin with door in closed position. Set dip switch to max. run timer
mode. Press control station open button to operate door from closed to
full open position without stopping. Set dip switch to desired operating
mode (B2, C2, D1, E2, T, TS).

Set Adjustable Mid Stop

Begin with door in closed position. Set dip switch to adj. mid stop mode.
Press control station open button to operate door from closed to mid
stop position and stop with control station stop button. Set dip switch to
desired operating mode (B2, C2, D1, E2, T, TS).

Set Timer to Close (NOTE: Requires P/N 1A4811 CPSII Option
Board with Timer to Close Function)

Set dip switch to timer to close mode. Momentarily press control station
open button to set timer duration in 5 second increments. (Red
diagnostic L.E.D. will flash to indicate the entry of each 5 second
increment into memory). To re-set timer memory to zero, press control
station close button. Set dip switch to (T or TS) operating mode after
timer is programmed.

Diagnostic Mode

Set dip switch to diagnostic mode. Flashing red diagnostic L.E.D.
indicates proper microprocessor function. If the diagnostic L.E.D. does
not light, the control logic board requires replacement.

Set

max.

run

timer

Set
adj.

mid

stop

Set

timer

to close

Diagnostic

mode

123

OFF

123

OFF

123

OFF

123

OFF

4

4

4

4

13

TYPE STATION

OPERATING MODE

B2 3 Button, 1 Button, 1 & 3 Button Radio Control

Function: Momentary contact to open, close and stop, plus wiring for
sensing device to reverse and auxiliary devices to open and close
with open override.

C2 3 Button, 3 Button Radio Control
Function: Momentary contact to open and stop with constant pressure
to close, open override plus wiring for sensing device to reverse.

D1 2 Button, 3 Button Radio Control
Function: Constant pressure to open and close with wiring for sensing
device to stop.

E2 2 Button, 3 Button Radio Control
Function: 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.

T* 3 Button, 1 Button, 1 & 3 Button Radio Control
Function: Momentary contact to open, close, and stop, with open
override and timer to close. Every device that causes door to open,
except a reversing device, activates 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 until the
close button is used to close the door. (NOTE: Requires P/N 1A4811

CPSII Option Board with Timer to Close Function.)
TS* 3 Button, 1 Button, 1 & 3 Button Radio Control

Function: 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 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 until the
close button is used to close the door. (NOTE: Requires P/N 1A4811

CPSII Option Board with Timer to Close Function.)

B2

C2

D1

E2

T

TS

123

OFF

123

OFF

123

OFF

123

OFF

123

OFF

123

OFF

4

4

4

4

4

4

NOTE:

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

2. Auxiliary devices are any devices that have only one set of
contacts. Examples are: photocell, loop detector, pneumatic or
electrical treadles, residential 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.

14

NEMA MOTOR WIRING DIAGRAMS

The Chamberlain Group, Inc.
NEMA Motor Wiring Diagrams
2/19/94

Motor

Cable

Motor

T2 White
T4 YellowYellow

115V

Blue
Yellow

Orange

SINGLE VOLTAGE

1/3 & 1/2HP 115V only

115V

T1 - BlueBlack

T4 - Yellow

T5 - Black

T8 - RedRed

1 PHASE

208-230V

Motor

T4 YellowOrange

Orange

Blue

Black

Red

Cable

Motor

Yellow

Black

Blue
Orange

Red

T5 Black

T3 Orange
T1 Blue

T8 Red

Black

Cable

Yellow

Blue

Red

T5-Black

T1 Blue

3 PHASE

1/3 & 1/2HP 3/4HP & OVER

Motor

Yellow

Black
Blue

Orange

Red

T1

T7

T2

T8

T3

T9

P2

P1

T7

T2

T8
T3

208-230V

T1

T4

T5

T6

T9

T8

RedT3Orange

T2
White

208-230V

T4

T5

T6

Cable

DENOTES WIRENUT CONNECTION

Cable

15

ILLUSTRATED PARTS - SOLID STATE ELECTRICAL BOX

8

18

12

2

22

17

16

11

3

11

6

10

21

20

15

13

14

13

7

19

3

23

4

WIRING

CONTROL

1

2

NEC CLASS 2 CIRCUIT

3

9

1

5

16

ITEM

NO.

10 155B16 1 Heat Sink
11 133A182 2 Limit Nut 1/2"
12 171A411 4 Screw 4/40 x 1-1/2" Pan Head
13 216A184 2 Thrust Washer
14 216A191 1 Washer, Spring Curved
15 158A49 1 Retaining Ring 3/8"
16 184A109 4 Spacer - Stand Off - Round
17 180B133 2 Limit Switch

PART NO. QTY. DESCRIPTION

1 1B3727 1 Terminal Assy. 3-Lug
2 41K4304 1 Switch Bracket Assy. (Aux. & Sensing)
3 1B3796 1 Ltd. Shaft-Sprocket Assy.
4 1B4681 1 Cover & Hinge Assy.
5 1C4691 1 Electric Box Assy.
6 1B4683 1 Wire Harness Limit Switch
7 11A012 1 Flanged Sleeve Bearing
8 12B552 1 Limit Bracket
9 31A388 1 Dome Plug

REPAIR PARTS - 
SOLID STATE
ELECTRICAL BOX

DESCRIPTION

MOTOR P/N

1/3 HP, 115V, 1 PHASE

123D121

1/3 HP, 230V, 1 PHASE

123D121

1/3 HP, 230V, 3 PHASE

123D117

1/2 HP, 115V, 1 PHASE

123D122

1/2 HP, 230V, 1 PHASE

123D122

1/2 HP, 230V, 3 PHASE

123D118

3/4 HP, 115V, 1 PHASE

123D123

3/4 HP, 230V, 1 PHASE

123D123

3/4 HP, 230V, 3 PHASE

123D119

1 HP, 115V, 1 PHASE

123D124

ITEM PART NO. DESCRIPTION QUANTITY
M111

18
19
20
21

22
23

REMARKS: *Overload to be set at 115% maximum of motors rated current.

1D4650
180C104-3
204B134
180B159-0
180B159-1
180B159-2
180B159-3
180B159-4
180B159-5
180B159-9
1B4682
1B4824

Motor
PCB Assy.
Overload 2.8 - 4.4A*
Transformer 115V/230V
Overload 3.5A
Overload 5A
Overload 7A
Overload 8A
Overload 10A
Overload 15A
Overload 12A
Radio Control Harness
Inductor Power Assy.

11 11 1 11111

1

1
1

1

1111111 11111
1111111 11111

111

1

11

1

1

1

11111

1

1

11

11

1

11

1

1

1 HP, 230V, 1 PHASE

123D124

1 HP, 230V, 3 PHASE

123D120

1

11

1

17

ILLUSTRATED PARTS - OPERATOR MODEL HTL LOW PROFILE

9

18

The Chamberlain Group, Inc.
HTL Low Profile CDO Manual
Exploded View
#114A1798
5/23/94, 7/94

16

12

15

10

15

11

8

20

9

14

8

5

19

13

21

7

7

8

6

5

17

18

3

4

2

18

1

19

REPAIR PARTS FOR MODEL HTL

ITEM
NO. PART NO. QTY DESCRIPTION

1 1 Electrical Box Assy. (See detail)
2 1B4684 1 Motor Cable Assy.
3 See Chart 1 Motor
4 1C4707 1 Motor Mounting Bracket Assy.
5 1A3742 2 Chain Assy. (43 Pitches)
6 81C172 1 Sprocket-10T
7 See Chart 2 L-Rail
8 1B4001 1 Trolley Assy.
9 1C3992 1 Bracket Assy.
10 1B4694 1 Clutch Shaft Assy.
11 See Chart Varies Spacer
12 144B44 1 Pulley 7" - 4L
13 41K4300 1 Ball Bearing Kit
14 1B4695 1 Output Shaft Assy. (1/3 & 1/2 HP)

1B4696 1 Output Shaft Assy. (3/4 & 1 HP)
15 41K4301 1 Clutch Assy. Kit
16 20B12 1 V-Belt 30" - 4L
17 144A43 1 Pulley 1-5/8" - 4L
18 59D54-2 1 Frame Rt. Side

59D54-1 1 Frame Lt. Side
19 184B97 1 Spacer
20 41K4302 1 Header Bracket Assy.
21 11A49 2 Bronze Bearing

HOW TO ORDER REPAIR PARTS

OUR LARGE SERVICE ORGANIZATION

SPANS AMERICA

INSTALLATION AND SERVICE INFORMATION

ARE AVAILABLE 6 DAYS A WEEK

CALL OUR TOLL FREE NUMBER - 1-800-528-6563

HOURS 7:00 TO 3:30 p.m. (Mountain Std. Time)

MONDAY through SATURDAY

IN CANADA

CALL OUR TOLL FREE NUMBER – 1-800-654-4736

WHEN ORDERING REPAIR PARTS

PLEASE SUPPLY THE FOLLOWING INFORMATION:

PART NUMBER DESCRIPTION MODEL

NUMBER

ADDRESS ORDER TO:

THE CHAMBERLAIN GROUP, INC.

Electronic Parts & Service Dept.
2301 N. Forbes Blvd., Suite 104

Tucson, AZ 85745

RAIL - CHAIN ASSEMBLY - SPACER KIT

for #48 Chain

ITEM #7 ITEM #11
Door Chain #48 Chain 1 Set
Height Rail Qty Assembly Qty Master Link Qty Spacer Kit Qty

8 Ft. 183C0137 2 1A4765-1 1 1A0995 1 1A4004 2
10 183C0137-1 2 1A4765-2 1 1A0995 1 1A4004 2
12 183C0137-2 2 1A4765-3 1 1A0995 1 1A4004 2
14 183C0137-3 2 1A4765-4 1 1A0995 1 1A4004 3
16 183C0138 2 1A4765-5 1 1A0995 1 1A4004 3
18 183C0138-1 2 1A4765-6 1 1A0995 1 1A4004 3
20 183C0138-2 2 1A4765-7 1 1A0995 1 1A4004 4
22 183C0138-3 2 1A4765-8 1 1A0995 1 1A4004 4

RAIL - CHAIN ASSEMBLY - SPACER KIT

for #41 Chain

ITEM #7 ITEM #11
Door Chain #41 Chain 1 Set
Height Rail Qty Assembly Qty Master Link Qty Spacer Kit Qty

8 Ft. 183C0137 2 1A4766-1 1 109A0021 2 1A4005 2
10 183C0137-1 2 1A4766-2 1 109A0021 2 1A4005 2
12 183C0137-2 2 1A4766-3 1 109A0021 2 1A4005 2
14 183C0137-3 2 1A4766-4 1 109A0021 2 1A4005 3
16 183C0138 2 1A4766-5 1 109A0021 2 1A4005 3
18 183C0138-1 2 1A4766-6 1 109A0021 2 1A4005 3
20 183C0138-2 2 1A4766-7 1 109A0021 2 1A4005 4
22 183C0138-3 2 1A4766-8 1 109A0021 2 1A4005 4

CONTROL CONNECTION DIAGRAM

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

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

STANDARD

7645

Open

Close

Stop

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

STANDARD

764

7645

2 OR MORE KEY LOCKOUT

Open

Close Close

Stop Stop

Open

2 OR MORE

764

®

7645

Open

Close

Stop

Keyswitch

D1 & E2

Open

Close

1 BUTTON STATION OR ANY AUXILIARY DEVICE

OPEN / CLOSE

14

SENSING DEVICE TO REVERSE OR STOP EXTERNAL INTERLOCK

48

MODE ONLY

B2, T & TS

MODE ONLY

Open

Close Close

RESIDENTIAL RADIO CONTROLS

OPEN TIMER TO CLOSE

RADIO CONTROL

REMOVE JUMPER

23

Open

4110

123

(24Vdc only)

D1 & E2

MODE ONLY

23

ONE

WIRING TYPES - ALL

2 OR MORE

© 1995, The Chamberlain Group, Inc.

114A1798B All Rights Reserved Printed in Mexico