Chamberlain Merlin MT5580, Installation And Operation Instructions Manual

INSTALL THE LIGHT AND LENS –

Install a 40 watt maximum light bulb 

(1)

in the socket as shown. The light will turn on and remain lit for 4-1/2 minutes when power is connected.

After 4-1/2 minutes it will turn off.

Replace burned out bulbs with 

rough service

light bulbs.

Apply slight pressure on sides of the lens 

(2)

and slide tabs 

(3) 

into slots 

(4)

in the end panel. Reverse the procedure to remove the lens.

15

2

1

40W

E27

3

FASTEN DOOR BRACKET – 

If yours is a canopy or dual-track style garage door, a door arm conversion kit is required. Follow the instal-
lation instructions included with the replacement door arm. Exercise care in removing and assembling arm
conversion kit. Keep fingers away from the sliding parts.

NOTE: 

Horizontal and vertical reinforcement is needed

for lightweight garage doors.

Sectional and One-Piece Door Installation Procedure:

Door bracket 

(1)

has left and right side fastening holes.

Assemble and install the bracket and plate 

(2)

if your

installation requires top and bottom fastening holes.

1. Center bracket (with or without plate, as required) at

the top of inside face of door as shown. Mark holes.

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 sheet metal screws 

(4)

.

16

3

4

B

1

4

C

A

1

2

3

3

1

2

4

A. 0-100mm
B. 150-250mm

10