Merlin MT5580P Installation And Operating Instructions Manual page 12

FASTEN DOOR BRACKET
20
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. 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 sheet metal screws (4).
C. One-piece door optional
Fasten with wood screws (5).
CONNECT THE DOOR ARM (ONE PIECE DOORS)
21
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 limit the door should NOT
have a backward slant when fully open as illustrated
(Figure 5). A slight backward slant will cause unnec-
essary buckling and/ or jerking operation as the door
is being opened or closed from the fully open position
(figure 5).
A 3
1
2
Figure 4
Door
Bracket
Clevis Pin
12
3
A. 0-100mm
B. 150-250mm
B 1
3
R-Clip
Straight
Arm
Figure 5
Correct Angle
Open Door
4
C
5
1
2
4
Nuts
Lock
Washers
Curved
Door Arm
Trolley
Door with
Backward Slant
(Incorrect)