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9.
Mount power head (See Section 2 ALTERNATE
MOUNTING METHODS).
• Be sure rail assembly and power head are on
door center line (line "V').
• Check the illustrations. Decide which mounting
method you will use. Materials for mounting are
not included.
• After power head is installed, remove
supporting material.
• Close door.
10. Join door arms exactly as shown (Fig. 2-16).
• Overlap arms by two (2) holes.
• Install two (2) 3/8" x 7/8" hex bolts, and hex
flange nuts.
,, Tighten hex nuts securely.
11. install assembled
door arms (Fig. 2-17).
• Attach straight end of assembled door arms to
door bracket.
- slip straight door arm into slot in door bracket.
- secure with clevis pin [90] and cotter pin [89].
, Release carriage (See emergency release tag).
• Slide carriage toward door.
• Attach short end of curved door arm to carriage.
- slip curved door arm into slot in carriage.
- secure with clevis pin and cotter pin.
12. Adjust emergency
release cord length.
• Mount the emergency release knob 6 feet from
the floor.
• Retie overhand knot and trim excess cord.
ht door arm
[91]
,,
Bolt, 3/8-16 x 7/8"
/"
[92]e' ,-"
3/8-16 nut
O/
Curved
door
arm
Clevis pin
Cotter pin
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