Step 24: Upper Door Arm Positioning
Trolley must be at the factory preset fully close posi- tion. If not, activate opener to bring trolley to factory preset close limit, (see illustration).
CAUTION: Door arm will swing down when tie wrap is cut. Support upper arm with your free hand, to prevent door arm from swinging down unexpectedly.
The upper door arm is secured to the spacer bracket with one tie wrap during shipping. Remove tie wrap attaching upper door arm to the spacer bracket, this will allow door arm to swing down. Slide the trolley until it snaps on the chain latch assembly. Attach warning label and red pull knob to red release cord connected to trolley.
Step 25: Setting Trolley Close Posi- tion
Verify trolley close position is 11” to 13” between trolley clevis pin and the inside face of the door. If adjustment of the trolley position is required, use the close travel adjustment screw located on the bottom of the motor head. A 1/4 turn equals approximately 1” of trolley travel; turn clockwise to decrease distance (forward) and
Step 26: Connecting Door Arm to Door
Align lower door arm hole in curved end (single hole) with middle hole of door bracket. Install 5/16” clevis pin through lower door arm and door bracket, slide 5/16” flat washer over clevis pin and se- cure with retaining ring.
Align upper and lower door arm pieces to nearest matching holes. Note: It may be necessary to apply downward pressure on the door or slightly raise the door during this process. Secure upper and lower door arms to each other using two
Note: Door arm angle must be 10° to 30° degrees (see illustration). If not, repeat Step 25 and increase distance between trolley clevis pin and inside face of the door. Note: Install machine bolts as far apart as possible.
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