Fasten Door Bracket - Chamberlain Merlin Professional MT230 Installation And Operating Instructions Manual

15

FASTEN DOOR BRACKET

Sectional and One-Piece Door Installation Procedure:
1. Centre 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 wood screws (2).
C. One-piece door optional
Fasten with wood screws (2).
16
CONNECT THE 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 an R-clip.
• 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 R-clip provided.
NOTE: When setting the up limit the door should
NOT have a backward slant when fully open as
illustrated (Figure 5). A slight backward slant will
cause unnecessary bucking and/or jerking opera-
tion as the door is being opened or closed from the
fully open position (figure 5).
A
3
1
3
Figure 4
Clevis Pin
9
3
A. 0-100mm
B. 150-250mm
B
1
2
Door
Bracket
R-Clip
Straight
Arm
Figure 5
Correct Angle
Open Door
2
1
C
1
Nuts
Lock
Washers
Curved
Door Arm
Trolley
Door with
Backward Slant
(Incorrect)
2