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Lift-Master
The Professional Line
OWNERS MANUAL
The Chmaberlain Group, Inc.
A Unit of Duchossois Industries, Inc.
845 Larch Avenue, Elmhurst, Illinois 60126
MODEL BJ
BELT JACK
SERIES B
WIRING
TYPE
COMMERCIAL DOOR OPERATOR
LISTED
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TYPE STATION NUMBER FUNCTION
B 3 Button 453365 Momentary contact to open, close and stop.
B1 3 Button 453639 Momentary contact to open, close and stop plus wiring for sensing
device to stop.
B2 3 Button 453642 Momentary contract to open, close and stop plus wiring for sensing
device to reverse and auxiliary devices to open and close with
override.
C 3 Button 453636 Momentary contact to open and stop with constant pressure to
close.
C1 3 Button 453640 Momentary contact to open and stop with constant pressure to close
and wiring for sensing device to stop.
C2 3 Button 453643 Momentary contact to open and stop with constant pressure to
close.
D 2 Button 453641 Constant pressure to open and close.
D1 2 Button 453641 Constant pressure to open and close with wiring for sensing device
to stop.
E 2 Button 453638 Momentary contact to open and constant pressure to close. Release
of close button will cause door to reverse (rollback feature).
E2 2 Button 453644 Momentary contact to open with open override and constant
pressure to close.
S 1 Button 453645 Momentary contact to open and close plus wiring for sensing device
to reverse, auxiliary devices to open and close, with open override.
T 3 Button 453646 Momentary contact to open, close and stop with open override and
timer to close. Open button may be connected to activate timer if
desired. Auxiliary controls may be connected to open and activate to
close or to open and close, without activating timer.
ST 1 Button 453647 “T” type wiring with single button instead of three button operation.
(See “S” type wiring.)
TS 3 Button 453648 momentary contact open, close and stop with open override and
timer to close. EVERY device that causes door to open will activate
timer to close including sensing device to reverse. Timer may be
deactivated until next opening signal is received by depressing stop
button after door has reached open position or permanently by use
of optional timer defeat switch. Photo-cell or loop detector not
recommended for use as a sensing device to reverse with this wiring
type.
STS 1 Button 453649 ‘TS” type wiring with single button instead of three button operation.
(See ‘S” type wiring.)
Notes: 1. External interlocks may be wired into all wiring types.
2. Auxiliary devices are any devices that have only one set of contacts.
Examples are: photo-cell, loop detector, pneumatic or electric 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 step button first.
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MOTOR WIRING DIAGRAMS
1 PHASE
114A1039 1987, The Chamberlain Group, Inc
Rights Reserved Printed in Mexico
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CONTROL CONNECTION DIAGRAM
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ILLUSTRATED PARTS BREAKDOWN
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ELECTRICAL BOX ASSEMBLY
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1
1
1
1
1
1
1
/
/
/
/
3
3
H
H
P
P
O
1
2
P
1
3
E
5
* OPTIONAL
** SPROCKET SIZE VARIES WITH TYPE OF
DOOR USED.
SPROCKET CAN BE USED ON EITHER END
OF SHAFT.
ITEM PT. NO. DESCRIPTION QUANTITY
1 451915 Base, Frame 1 1 1 1 1 1 1 1 1 1 1 1
2 451917 Leg, Frame 2 2 2 2 2 2 2 2 2 2 2 2
3 451919 Brace, Frame 2 2 2 2 2 2 2 2 2 2 2 2
4 452957 Assembly, Pulley Shaft 1 1 1 1 1 1 1 1 1 1 1 1
5 450169 Shaft, Output-1” Diameter 1 1 1 1 1 1 1 1 1 1 1 1
6 450333 Dental, Disconnect-3/4” Bore 1 1 1 1 1 1 1 1 1 1 1 1
7 451615 Spring, Disconnect-BJ 1 1 1 1 1 1 1 1 1 1 1 1
8 452956 Assembly, Sprocket Dental 3/4” Bore 1 1 1 1 1 1 1 1 1 1 1 1
9* 450926 Wheel, Chain-3/4” Dia. w/Dental 1 1 1 1 1 1 1 1 1 1 1 1
10 450168 Shaft, Disconnect-BJ 1 1 1 1 1 1 1 1 1 1 1 1
11 452219 Bushing, Flanged Keyed 3/4” 4 4 4 4 4 4 4 4 4 4 4 4
12 452214 Bushing, Flanged w/Flat 1” 2 2 2 2 2 2 2 2 2 2 2 2
13 453105 Collar, Shaft 3/4” 4 4 4 4 4 4 4 4 4 4 4 4
14 560301 Collar, Shaft 1” 2 2 2 2 2 2 2 2 2 2 2 2
15 450574 Sprocket, 43-B-14 1” Bore 1 1 1 1 1 1 1 1 1 1 1 1
16 450588 Sprocket, 43-B-30 1” Bore 1 1 1 1 1 1 1 1 1 1 1 1
17 450572 Sprocket, 43-B-10 3/4” Bore 2 2 2 2 2 2 2 2 2 2 2 2
18 451855 Chain, Roller #65, 43 Pitch w/Link 3 3 3 3 3 3 3 3 3 3 3 3
19 452958 Assembly, Disconnect Arm 1 1 1 1 1 1 1 1 1 1 1 1
20 452033 Screw, Sheet Metal 6x3/8” 4 4 4 4 4 4 4 4 4 4 4 4
21 230703 Screw, Cap-Hex Head 3/8-16x1” 9 9 9 9 9 9 9 9 9 9 9 9
22* 230301 Nut, Hex 3/8-16 13 13 13 13 13 13 13 13 13 13 13 13
23 230601 Washer, Lock 3/8” 9 9 9 9 9 9 9 9 9 9 9 9
24 450419 Key, 1/4x1” 2 2 2 2 2 2 2 2 2 2 2 2
25 Assembly, Electrical Box See Detail
26* 450410 Bolt, Eye 3/8-16x4”, 1” I.D. Eye 2 2 2 2 2 2 2 2 2 2 2 2
27 450421 Key, Woodruff 3/16” 2 2 2 2 2 2 2 2 2 2 2 2
28 452032 Screw, Set-Socket Head 5/16-18x1/4” 14 14 14 14 14 14 14 14 14 14 14 14
29 452030 Screw, Set-Socket Head 1/4-20x1/4” 2 2 2 2 2 2 2 2 2 2 2 2
30 230707 Bolt, Hex Head-1/4-20x1/4” 4 4 4 4 4 4 4 4 4 4 4 4
31 230303 Nut, Hex-1/4” 4 4 4 4 4 4 4 4 4 4 4 4
32 450420 Key, 3/15x1-1/4” 1 1 1 1 1 1 1 1 1 1 1 1
33* 350104 Hand Chain, 910 1 1 1 1 1 1 1 1 1 1 1 1
34 451276 Cover, Electrical Box 1 1 1 1 1 1 1 1 1 1 1 1
35 ** Sprocket, Drive Shaft 1 1 1 1 1 1 1 1 1 1 1 1
451347 Motor 1/3 HP. 115/230V 1 Phase 1 1
36 451350 Motor 1/3 HP. 230/460V 3 Phase 1 1
451348 Motor 1/2 HP. 115/230V 1 Phase 1 1 1
451351 Motor 1/2 HP 230/460V 3 Phase 1 1
451349 Motor 1 HP. 115/230V 1 Phase 1 1
451352 Motor 1 HP. 230/460V 3 Phase 1 1
37 230719 Screw, Cap, Hex Head 5/16-18x 3/4” 4 4 4 4 4 4 4 4 4 4 4 4
38 230501 Washer, Flat 5/16” 8 8 8 8 8 8 8 8 8 8 8 8
39 230302 Nut, Hex 5/16-18 4 4 4 4 4 4 4 4 4 4 4 4
40 230604 Washer, lock 5/16” 4 4 4 4 4 4 4 4 4 4 4 4
41 450236
42 451106 Pulley, Motor-5/8” Bore 1 1 1 1 1 1 1 1 1 1 1 1
43 451415 V Belt 31” 1 1 1 1 1 1 1 1 1 1 1 1
44 453124 Lock Washer 5/16” External Tooth 4 4 4 4 4 4 4 4 4 4 4 4
45 453123 Lock Washer 1/4” External Tooth 8 8 8 8 8 8 8 8 8 8 8 8
Clamp, Cable 90°-3/8”
0
R
V
V
A
T
1
1
O
R
P
P
h
h
a
a
s
s
e
e
1 1 1 1 1 1 1 1 1 1 1 1
/
3
3
2
H
H
H
P
P
P
2
4
1
3
6
1
0
0
5
V
V
V
3
3
1
P
P
P
h
h
h
a
a
a
s
s
s
e
e
e
1
/
/
/
2
2
2
1
1
1
H
H
H
H
H
P
P
P
2
2
4
3
3
6
0
0
0
V
V
V
1
3
3
P
P
P
h
h
h
a
a
a
s
s
s
e
e
e
H
P
P
P
1
2
2
1
3
3
5
0
0
V
V
V
1
1
3
P
P
P
h
h
h
a
a
a
s
s
s
e
e
e
1
H
P
4
6
0
V
3
P
h
a
s
e
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J
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C
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R
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C
A
L
B
O
X
ITEM PT.NO. DESCRIPTION QUANTITY
A 453020 P.C. Board, Option - Commercial 1 1 1 1 1 1 1 1 1 1 1 1
B 453021 Contractor, S/D 1 1 1 1 1 1 1 1 1 1 1 1
C 453336 Switch, Limit - Open, Wired 1 1 1 1 1 1 1 1 1 1 1 1
D 453339 Switch Limit - Closed, Wired 1 1 1 1 1 1 1 1 1 1 1 1
E 453335 Assembly, Motor Cable 1 1 1 1 1 1 1 1 1 1 1 1
F 451278 Box, Electrical - P.C.B. 1 1 1 1 1 1 1 1 1 1 1 1
G 453115 Standoff 4 4 4 4 4 4 4 4 4 4 4 4
H 452077 Nut Lock 8-32 2 2 2 2 2 2 2 2 2 2 2 2
I 450587 Nut Limit - Plastic, 1/2x20 2 2 2 2 2 2 2 2 2 2 2 2
J 452078 Screw, Sheet Metal - Grn. (Gnd) 1 1 1 1 1 1 1 1 1 1 1 1
K 453231 230V I.R. Relay 1 1 1
453232 115V I.R. Relay 1 1 1
L 450252 Wire Ties 3/32” 3 3 3 3 3 3 3 3 3 3 3 3
M 450229 Terminal, Double Male 1/4” 5 5 5 5 5 5 5 5 5 5 5 5
N 452094 Screw, Sheet Metal 12-24x1/2” 2 2 2 2 2 2 2 2 2 2 2 2
O 230612 Washer, Lock #4 Internal Tooth 8 8 8 8 8 8 8 8 8 8 8 8
P 453332 Assy. Wire 22 GA. Green (Gnd) 1 1 1 1 1 1 1 1 1 1 1 1
Q 452036 Cable Clamp 1 1 1 1 1 1 1 1 1 1 1 1
R 453354 Overload, 3.5A 1 Phase 1
453355 Overload, 5.0A 1 Phase 1
453356 Overload, 7.0A 1 Phase 1
453357 Overload, 8.0A 1 Phase 1
453358 Overload, 10.0A 1 Phase 1
453359 Overload, 15.0A 1 Phase 1
453376 Assy., Overload, 195A 3 Phase 1
453378 Assy., Overload, 4.0A 3 Phase 1
* * * *
1
1
1
1
1
/
/
/
3
3
H
H
P
P
1
2
1
3
5
0
V
V
1
1
P
P
H
H
A
A
S
S
E
E
/
3
3
H
H
P
P
2
4
3
6
0
0
V
V
3
3
P
P
H
H
A
A
S
S
E
E
1
/
/
2
2
H
H
P
P
1
2
1
3
5
0
V
V
1
1
P
P
H
H
A
A
S
S
E
E
1
1
/
/
1
1
2
2
H
H
P
2
3
0
V
3
P
H
A
S
E
H
P
P
4
1
6
1
0
5
V
V
3
1
P
P
H
H
A
A
S
S
E
E
1
H
H
P
P
2
2
3
3
0
0
V
V
1
3
P
P
H
H
A
A
S
S
E
E
1
H
P
4
6
0
V
3
P
H
A
S
E
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B
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ITEM PT.NO. DESCRIPTION QUANTITY
S 452048 Screw, Rd. 8-32x3/8” 2 2 2 2 2 2 2 2 2 2 2 2
T 453207 Assembly, Transformer 110V 1 1 1
453208 Assembly, Transformer 230V 1 1 1 1 1 1
U 452033 Screw, Sheet Metal #6x3/8” 2 2
V 453247 Spring, I.R. Relay 1 1 1 1 1 1
W 453037 Power Terminal Strip Guard 1 1 1 1 1 1 1 1 1 1 1 1
X 230615 Lock Washer #8 External Tooth 1 1 1 1 1 1 1 1 1 1 1 1
LIMIT SWITCH ASSEMBLY
* * * *
1
1
1
1
1
/
/
/
3
3
H
H
P
P
1
2
1
3
5
0
V
V
1
1
P
P
H
H
A
A
S
S
E
E
/
3
3
H
H
P
P
2
4
3
6
0
0
V
V
3
3
P
P
H
H
A
A
S
S
E
E
1
/
/
2
2
H
H
P
P
1
2
1
3
5
0
V
V
1
1
P
P
H
H
A
A
S
S
E
E
1
1
/
/
1
1
2
2
H
H
P
2
3
0
V
3
P
H
A
S
E
H
P
P
4
1
6
1
0
5
V
V
3
1
P
P
H
H
A
A
S
S
E
E
1
H
H
P
P
2
2
3
3
0
0
V
V
1
3
P
P
H
H
A
A
S
S
E
E
1
H
P
4
6
0
V
3
P
H
A
S
E
ITEM PT. NO. DESCRIPTION QUANTITY
100 171A335 Hex. Hd. Mach. Scr. #4-40x5/8” 4 4 4 4 4 4 4 4 4 4 4 4
101 450347 Spacer, Limit Switch 4 4 4 4 4 4 4 4 4 4 4 4
102 171A336 Hex Hd. Mach Scr. #4-40x5/16” 2 2 2 2 2 2 2 2 2 2 2 2
103 171A275 Hed Hd. Mach Scr. #8-32x3/4” 2 2 2 2 2 2 2 2 2 2 2 2
104 177A113 Spring Compression 2 2 2 2 2 2 2 2 2 2 2 2
105 450353 Bracket, L/S Mounting 1 1 1 1 1 1 1 1 1 1 1 1
106 450349 Retaining Ring 1 1 1 1 1 1 1 1 1 1 1 1
107 450350 Bearing, Flange 2 2 2 2 2 2 2 2 2 2 2 2
108 450179 Shaft Limit 1 1 1 1 1 1 1 1 1 1 1 1
109 450348 Sprocket, Limit Switch 1 1 1 1 1 1 1 1 1 1 1 1
110 171A338 Scr. Skt. Hd. Set #10-21x1/4 1 1 1 1 1 1 1 1 1 1 1 1
111 450352 Retainer, Travel Nut 1 1 1 1 1 1 1 1 1 1 1 1
112 171A337 Scr. Hex Hd. Mach #8-32x1/2” 4 4 4 4 4 4 4 4 4 4 4 4
113 452026 Washer, Split Lock #8 4 4 4 4 4 4 4 4 4 4 4 4
114 452003 Nut, Hex #8-32 4 4 4 4 4 4 4 4 4 4 4 4
* MOTORS AT THESE RATINGS ARE SUPPLIED AS STANDARD WITH AN INTERNAL AUTOMATIC
RESETTING OVERLOAD. (IN LINE OVERLOADS ARE OPTIONAL.)
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