Assembly step 1, Fasten the rail to the power unit, Assembly step 2 – Chamberlain 2000SDC 1/2HP User Manual
Page 6: Instali the trolley
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Assembly Section: Pages 6 - 7
ASSEMBLY STEP 1
Fasten the Rail To the Power Unit
NOTE: To aid in assembly and installation, replace
the foam packing around the power unit. Remove it
after Installation Step 5.
• Working on a level surface, align the rail assembly with
the power unit, as shown.
• Slip the coupling over the rail sprocket.
• Slide the rail through the power unit bracket until the
coupling fits securely over the power unit sprocket.
• Align the two screw holes in the rail with those in the
power unit bracket. Insert two 1/4"-20x5/8" hex screws
and lock nuts. Tighten securely with a 7/16" socket
wrench.
Rail/Power Unit
Bracket
Power Unit
Sprocket
Lock Nuts
1/4”-20
Rail
Sprocket
Opener
Chassis
Coupling
Hex Screws
1/4"-20x5/8"
Foam Packaging
Trolley
ASSEMBLY STEP 2
instali the Trolley
As illustrated above, slide the trolley onto and along the
bottom of the rail until it snaps firmly in place.
Be certain
to install it facing correctly: the trolley release arm must
be horizontal (lock position), with its arrow pointed
away from the power unit.
6