Door Arm Installation - Chamberlain ARM 1703 Operator Owner's Manual

Door Arm Installation

• With a 4.5mm (3/16") bit, drill two holes, 25mm (1")
deep.
PICTURE 12
3
A
2
4
1
5
1
A
1
3
2
Connecting the Extension Arm
1. Select the two bottom holes in the door arm that will allow
the screws to go into a cross bracing support of the door
(Figure 13). Door may REQUIRE ADDITIONAL bracing to
provide suitable support.
2. Mark and drill two 4.5mm (3/16") holes. Use the proper
screws provided.
The centerline of the garage door opener and the centerline
of the door arm should match to prevent binding of the arm
in operation.
3. Recheck and if not aligned, correct.
4. With the door fully closed, slide outer trolley (with extension
arm connected), against door arm. Line up the extension
arm and insert into slot in door arm (Figure 14).
Note: Do not move the door arm to meet the extension arm—
move the extension arm to meet the angle of the door arm.
5. Insert the two mounting bolts provided into holes as far
apart as possible and tighten (Figure 15).
6. Cut off the shipping cable tie to release the mechanism
(Figure 14 and Figure 15).
1. Header Wall
2. Rail Assembly
3. Door Spring
4. Header Bracket
5. Centerline of Header
Bracket
6. Canopy Door
B C 7
6
5
1
7
B C
1
1
7. Door Arm
8. Cross Bracing
9. Mounting Screw
10. Door Arm must be
vertical (use level)
11. Profiles
• Attach the door arm with proper hardware
provided (Figure 12).
Note: Whenever possible, use the nuts and
bolts supplied (A).
For metal or metal-braced doors, use self-tapping
screws supplied (B). For timber or timber-braced
8
doors, use wood screws supplied (C).
• Before tightening the screws, align the door
5
arm so it is vertical. Use a level to assist. The
tighten the screws.
1. Exterior of Door
2. Nut
3. Lock Washer
4. Bolt
A
1. Bolt
2. Lock Washer
3. Nut
1
3
6
6
5. Door Arm
6. Self-trapping screw
7. Timber support
8. Lag screw
B
1. Metal or Metal-
Braced
C
1. Timber or Timber-
Braced
2 Figure 13
PICTURE 13
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10
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10
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