Chamberlain PD220 1/2 HPS Chain Drive Garage Door Opener Manual - Page 14

STEP 3 Attach the rail to the header bracket, STEP 4 Position the garage door opener

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Installation STEP 3 Attach the rail to the header bracket 1. Align the rail with the header bracket. Insert the clevis pin through the holes in the header bracket and rail. Secure with the ring fastener. NOTE: Use the packing material as a protective base for the garage door opener. Clevis Pin 5/16"x1-1/2" HARDWARE Ring Fastener Clevis Pin 5/16"x1-1/2" Ring Fastener STEP 4 Position the garage door opener To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of door. 1. Remove the packing material and lift the garage door opener onto a ladder. 2. Fully open the door and place a 2x4 (laid flat) under the rail. NOTE: A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall enough you will need help at this point. If the door hits the trolley when it is raised, pull the trolley release arm down to disconnect the inner and outer trolley. Slide the outer trolley toward the garage door opener. The trolley can remain disconnected until instructed. Connected Disconnected 13

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13
Installation
STEP 3 Attach the rail to the header bracket
1.
Align the rail with the header bracket. Insert the clevis pin through the holes in the header bracket
and rail. Secure with the ring fastener.
NOTE:
Use the packing material as a protective base for the garage door opener.
HARDWARE
Clevis Pin 5/16"x1-1/2"
Ring Fastener
Clevis Pin
5/16"x1-1/2"
Ring Fastener
STEP 4 Position the garage door opener
To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of door.
1.
Remove the packing material and lift the garage door opener onto a ladder.
2.
Fully open the door and place a 2x4 (laid flat) under the rail.
NOTE:
A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall
enough you will need help at this point. If the door hits the trolley when it is raised, pull the trolley release
arm down to disconnect the inner and outer trolley. Slide the outer trolley toward the garage door
opener. The trolley can remain disconnected until instructed.
Connected
Disconnected