Chamberlain PD220 Assembly Instructions

5
Assembly
STEP 1 Assemble the rail and trolley
To prevent INJURY from pinching, keep hands and fingers away from the jointswhile assembling the
rail.
To avoid installation difficulties,do not run the garage dooropener untilinstructed todo so.
The front rail hasa cutout “window” at the door end (see illustration). The front rail hasa rail tab. This tab
MUST be on the top ofthe rail when assembled.
1. Remove the straight door arm and hanging bracketpackaged inside the front rail and set aside
for Installation Step 5 and 9. NOTE: To prevent INJURY while unpacking the rail carefully remove
the straight door arm stored within the rail section.
2. The rail sections have a groove onthe sides near the bottom edge. Use these grooves to
align the rail sections.Slide the tapered ends into the larger ones.Tabs along the side will lock
into place.
3. Asa temporary stop,inserta screwdriver into the hole in the second rail section from the motor
unit,as shown.
4. Check to be sure there are 4 plastic wear padsinside the inner trolley.Iftheybecame loose
during shipping, check all packing material. Snap them back into position as shown.
5. Slide the trolley assemblytoward the screwdriver as shown.
6. Slide the chain spreader onto the rail until it stops.
TIP: Ensure the rail sections are aligned properlyand the chain spreader has been installed
before fastening the rail to motor unit.
Inner Trolley
Wear Pads
Front Rail
Section
(TO DOOR)
To garage
door opener
(TO MOTOR UNIT)
Chain
Spreader
Outer Trolley
Alignment
Groove
Alignment
Groove
Trolley
SLIDE CHAIN
SPREADER
ONTO RAIL
Rail
Tab
Window
Cut-Out
Idler
Pulley
Hole

Chamberlain PD220 Specifications

General

Brand	Chamberlain
Model	PD220
Category	Garage Door Opener
Language	English