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10
FASTEN DOOR BRACKET
Sectional and One-Piece Door Installation Procedure:
Door bracket (1) has left and right side
fastening holes. If your installation requires
top and bottom fastening holes use both the
door bracket and door bracket plate (2) as
shown.
1. Center door bracket (with or without
door bracket plate, as required) at the
top inside face of door as shown.
Mark holes.
A. One-piece doors: locate bracket
at inside face of the door 0-100mm
down.
B. Sectional door: 150 - 250mm
below the top of the door.
2. A. Wooden doors
Drill 8mm holes (5/16") and fasten
the door bracket with nut,
lock washer, and carriage bolt (3).
B. Sheet metal doors
Fasten with sheet metal screws
(4).
C. One-piece door optional
Fasten with wood screws (5).
19
2
1
24V/21W Max.
INSTALL LIGHT
Gently pull lens (2) downward until the lens hinge is in the fully
open position. Do not remove the lens. Install a 24V/21W
maximum light bulb (1) in the socket as shown. The light will
turn on and remain lit for 2-1/2 minutes when power is
connected. After 2-1/2 minutes it will turn off. To close, gently
push diffuser up until engaged.
Replace burnt out bulbs with Chamberlain 041A0079 or
reputable light bulbs.
18
3
4
B
1
5
C
A
1
2
3
3
1
2
4
A. 0-100mm
B. 150-250mm
CONNECTING DOOR ARM ONE PIECE DOORS
Assemble the Door Arm:
• Fasten the straight and curved door arm
sections together to the longest possible
length (with a 2 or 3 hole overlap) (Figure 4).
• Make sure the garage door is fully closed.
Connect the straight door arm section to the
door bracket with the clevis pin.
• Secure with a ring fastener.
• Pull the emergency release handle disengage
the trolley by pulling straight down on the
emergency release cord. Slide the trolley
toward opener.
• Connect the curved arm section to the trolley
using the clevis pin and ring provided.
NOTE: When setting the up limits, the door
should NOT have a backward slant when fully
open (as illustrated Figure 5). A slight
backward slant will cause unnecessary
buckling and/or jerking operation as the door
is being opened or closed from the fully open
position (figure 5).
20
Open Door
Door with
Backward Slant
(Incorrect)
Correct Angle
Trolley
Figure 5
Nuts
Lock
Washers
R-Clip
Straight
Arm
Door
Bracket
Clevis Pin
Curved
Door Arm
Figure 4