8
Installation
Section 6 - Fasten Rail to Opener and Install Chain
Remove four washered bolts (1) from top of opener. Place rail (2) on opener,
fl
ush with stops (3) on top of
opener. Wrap chain (4) around slot in spreader (5) and over sprocket (6).
Push idler pulley bracket assembly toward front of the rail to eliminate excess slack in chain.
Align bolt holes on brackets (7) with bolt holes on opener. Secure brackets to opener with previously
removed bolts. Tighten bolts securely. The opener sprocket teeth must engage the chain.
Section 8 - Position the Header Bracket
The header bracket must be rigidly fastened to a structural support of the garage.
Reinforce the wall or ceiling with a 40mm (1-1/2”) board if necessary. Failure to comply may result in
improper operation of safety reverse system.
You can attach the header bracket either to the header wall or to the ceiling. Follow the instructions that
will work best for your particular requirements.
With the door closed, mark the vertical centerline of the garage door. Extend line onto header wall
above the door.
Open door to highest point of travel. Draw an intersecting horizontal line on header wall 5cm (2”) above
high point to provide travel clearance for top edge of door.
Section 7 - Assemble Header Sleeve
Note: The spring must be able to compress and bounce during operation. Final tensioning can be
performed after installation if necessary. Over tightening the belt may overload the system and cause
excessive wear.
1. Tension the belt by adjusting the nut on the pulley assembly clockwise until the spring is engaged.
2. Continue tightening to compress the spring and remove all the slack in the belt. DO NOT OVER-
TIGHTEN but ensure belt is
fi
rm. 36-38mm as indicated in the diagram is normal.
36 - 38 mm
1
Header Wall
Unfinished
Ceiling
Vertical Centerline
of Garage Door
Mounting
Location
Structural
Supports
Level
(Optional)
OPTIONAL
CEILING
MOUNT FOR
HEADER
BRACKET
Sectional door with curved track
Header Wall
Track
5 cm (2")
Highest Point
of Travel
Door
Summary of Contents for LM-W8ME
Page 21: ...Security 2 0 myQ Chamberlain Group Unit 1 75 Epping Road North Ryde NSW 2113 LM W8ME...
Page 22: ...2 1 8 3A BS1362 1 5 40 1 8 40 400 The Protector System The Protector System LiftMaster...
Page 25: ...5 1 2 240 220...
Page 26: ...6 LM W8ME 883LMW ME 960LM Security 2 0 883LMW ME 960LM 2 R 2 1 10mm 8mm 4 5mm 4mm 11mm 13mm...
Page 27: ...7 1 2 3 4 5 2 13 7 6 1 83 6 7 8 9 a 1 5 5 b c 10 11 12 3 8 1 1 2 4 2 13...
Page 28: ...8 3 2 1 6 5 4 7 1 1 2 40 2 5 1 2 36 38 36 38 mm 1 5 cm...
Page 29: ...9 A 4 5 B 150 4 5 8 R 80 2 50 mm 3 1 4 A 150 mm 1 2 3 5 5 2 3 1 4 200 mm 50 200 mm 1 2...
Page 30: ...10 50 1 2 50 3 1 4 5 3 16 4 5 3 2 1 25 6 A C 3 1 2 2 5 5 2 3 1 2 3 1 B 2 4 1 3 3 2 6 6 6...
Page 31: ...11 883LMW 4 Security 2 0 myQ Security 2 0 LiftMaster 1 5 1 6 2 3 12 1 5 5 2 6ABx1 6 mm 1 2 3...
Page 32: ...12 G F Z G F 1 G F G F G F Z Z G 2 11 3 G F C G G F C 11 mm 2 3 1 RED WHITE WHITE GREY...
Page 33: ...13 1 2 LED RED WHITE WHITE GREY 3 8 4 2 UP DOWN...
Page 39: ...19 LEARN LEARN 1 LED LEARN myQ 1 LED LEARN 2 LED LEARN LED 1 2 3 CR2032...