Lift-Master GJR User Manual
The Chamberlain Group, Inc.
©
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126
OWNER'S MANUAL
MODEL GJR/HJR
WALL MOUNTED STARTER
ADDENDUM
Refer to Model GJ or HJ
Installation Instructions
Serial #
(located on electrical box cover)
Installation Date
Wiring Type
COMMERCIAL DOOR OPERATOR
LISTED
®
NOT FOR RESIDENTIAL USE
PHYSICAL MOUNTING DIMENSIONS - MODEL GJR
3
"
4
/4
B
A
1
5
/2
"
GJR OPERATOR
CLUTCH
DIMENSION A
DIMENSION B
3
"
8
/4
3
"
7
/8
29
14
14
11/16
13/16
3
"
/4
"
"
25
11
15/16
1/16
"
"
30
15
5/16
7/16
"
26
"
11
"
11
1/2 HP 3/4 HP 1 HP 1-1/2 HP 2 HP
YES NO YES NO YES NO YES NO YES NO
29
14
3/16
5/16
"
"
10
25
7/16
9/16
"
"
29
14
5/16
7/16
"
"
25
10
9/16
11/16
"
"
14
29
11/16
9/16
"
"
25
10
13/16
15/16
"
"
9/16
11/16
"
"
2
PHYSICAL MOUNTING DIMENSIONS - MODEL HJR
7
"
17
/8
3
"
3
13
"
/16
Max.
3/4"
3
15
"
/16
8"
2
3/4"
1
/32
1"
"
19 1/2
"
13
1
"
5
/2
7
"
/16
DIM. "B"
Brake
8"
DIM. "A"
DIM.
A
B
WITH
BRAKE
15
16
/16
18
9/16
"
"
WITHOUT
BRAKE
17
7/16
1/2
"
"
16
3
ELECTRICAL ENCLOSURE WALL MOUNTED
STARTER MODELS HJR/GJR
7
"
/8
9
"
6 5/8
9 3/32
"
"
6 13/16
13 1/2
"
Important Notes
Please Read Before Proceeding
1. Make sure that the serial number on the operator limit switch cover matches the serial
number on the electrical enclosure cover.
2. All field installed wiring must be run using U.L. listed conduit and connectors.
3. Install high voltage wiring and 24VAC (control and limit) wiring in separate conduits.
Installation
1. Install the operator motor and frame assembly according to the Owner's Manual for your
model operator, (either GJ or HJ).
2. Securely attach the electrical enclosure to the wall adjacent to and within sight of the door
and operator. See Figure 1.
3. Refer to Figure 1 and wiring diagrams for locations of conduit and wiring connections.
4
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