Chamberlain HD930EV User Manual download pdf (Page 6)

Assembly

STEP 1 Assemble the rail and install the trolley

To preventINJURY from pinching, keep hands and fingers away from the joints while assembling the

rail.

To avoid installation difficulties, do not run the garage door opener until instructed to do so.

The front rail has a cut out “window” at the door end. The front and back rail both have rail tabs. These

rail tabs MUST be on top of the rail when assembled.

1. Remove the straightdoor arm and hanging bracketpackaged inside the front rail and setaside

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. Align the rail sections on a flat surface as shown and slide the tapered ends into the larger ones.

Tabs along the side will lock into place.

3. Place the motor uniton packing material to protectthe cover,and rest the back end of the rail on

top.For convenience, put a supportunder the front end of the rail.

4. As a temporary stop, inserta screwdriver into the hole 10" (25 cm) from the front end of the rail,

as shown.

5. Check to be sure there are 4 plasticwear pads inside the inner trolley.Ifthey became loose

during shipping, checkall packing material. Snap them back into position as shown.

6. Slide the trolley assembly along the rail from the back end to the screwdriver.

7. Slide the rail onto the “U” bracket, until it reaches all the stops on the top and sides ofthe “U”

bracket.

To garage

door opener

(TO MOTOR UNIT)

Front Rail

Section

(TO DOOR)

“U” Bracket

Outer Trolley

Inner Trolley

Wear Pads

SLIDE TO STOPS

ON TOP AND

SIDES OF

“U” BRACKET

Rail

Tab

Trolley

Window

Cut-Out

Idler

Pulley

Hole

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Chamberlain HD930EV User Manual Page 6

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