Chamberlain 1156 Garage Door Opener User Manual


 
23
INSTALLATION STEP 12
Connect Door Arm to Trolley
Follow instructions which apply to your door type as
illustrated below and on the following page.
SECTIONAL DOORS ONLY
Make sure garage door is fully closed. Pull the
emergency release handle to disconnect the outer
trolley from the inner trolley. Slide the outer trolley
back (away from the door) about 200mm as shown
in Figures 1, 2 and 3.
Figure 1:
Fasten straight door arm section to outer trolley
with the 8mm x 25mm clevis pin. Secure the
connection with a ring fastener.
Fasten curved section to the door bracket in the
same way, using the 8mmx 32mm clevis pin.
Figure 2:
Bring arm sections together. Find two pairs of
holes that line up and join sections. If possible, use
the top and bottom holes on the curved door arm,
as shown.
Figure 3, Hole Alignment Alternative:
If holes in curved arm are above holes in straight
arm, disconnect straight arm. Cut about 150mm
from the solid end. Reconnect to trolley with cut
end down as shown.
Bring arm sections together.
Find two pairs of holes that line up and join with
screws, lock washers and nuts.
Pull the emergency release handle toward the
opener at a 45° angle so that the trolley release
arm is horizontal. Proceed to
Adjustment Step 1,
page 25. Trolley will re-engage automatically when
opener is operated.
Ring
Fastener
Door
Bracket
Clevis Pin
8mm x 32mm
Curved
Door Arm
Straight
Door Arm
Clevis Pin
8mm x 25mm
Inner Trolley
Outer Trolley
Lock
Washers
8mm
Nuts
8mm
Door Bracket
Hex Screws
8mm x 20mm
Emergency
Release
Handle
Lock
Washers
8mm
Nuts
8mm
Hex Screws
8mm x 20mm
Cut This End
Figure 1
Figure 2
Figure 3
Lock Washer 8mm
Nut 8mm
Ring Fastener
Hex Screw
8mm x 20mm
Clevis Pin
8mm x 25mm (Trolley)
Clevis Pin
8mm x 32mm (Door Bracket)
HARDW
ARE SHOWN
ACTUAL
SIZE
114A2845