LiftMaster LJ8950W LJ8950W Manual - Page 14

INSTALLING THE BRACKETS, OPTION B: FLOOR INSTALLATION, Fasten Wood Block to Wall

Page 14 highlights

Installation INSTALLING THE BRACKETS Be sure power to the operator is disconnected. Install and align the brackets so the safety reversing sensors will face each other across the door, with the beam no higher than 6" (15 cm) above the floor. They may be installed in one of three ways, as follows. OPTION A: WALL INSTALLATION 1. Place the bracket against the wall with curved arms facing the door. Be sure there is enough clearance for the sensor beam to be unobstructed. 2. If additional depth is needed, an extension bracket (see Accessories) or wood blocks can be used. 3. Use bracket mounting holes as a template to locate and drill (2) 3/16" diameter pilot holes on the wall at each side of the door, no higher than 6" (15 cm) above the floor. 4. Attach brackets to wall with lag screws (not provided). If using extension brackets or wood blocks, adjust right and left assemblies to the same distance out from the mounting surface. Make sure all door hardware obstructions are cleared. OPTION B: FLOOR INSTALLATION 1. Use wood blocks or extension brackets (see Accessories) to elevate sensor brackets so the lenses will be no higher than 6" (15 cm) above the floor. 2. Carefully measure and place right and left assemblies at the same distance out from the wall. Be sure all door hardware obstructions are cleared. 3. Fasten to the floor with concrete anchors as shown. Fasten Wood Block to Wall with Lag Screws (not provided) Safety Reversing Sensor Bracket Lag Screws (not provided) Extension Bracket (See Accessories) (Provided with Extension Bracket) (Provided with Extension Bracket) Safety Reversing Sensor Bracket Attach with Concrete Anchors (not provided) Safety Reversing Sensor Bracket 14

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14
Installation
INSTALLING THE BRACKETS
Be sure power to the operator is disconnected. Install and align the brackets so the safety reversing sensors will face each other across
the door, with the beam no higher than 6" (15 cm) above the floor. They may be installed in one of three ways, as follows.
OPTION B: FLOOR INSTALLATION
1.
Use wood blocks or extension
brackets (see Accessories) to elevate
sensor brackets so the lenses will be
no higher than 6" (15 cm) above the
floor.
2.
Carefully measure and place right and
left assemblies at the same distance
out from the wall. Be sure all door
hardware obstructions are cleared.
3.
Fasten to the floor with concrete
anchors as shown.
Fasten Wood Block to Wall with
Lag Screws (not provided)
Attach with Concrete Anchors
(not provided)
OPTION A: WALL INSTALLATION
1.
Place the bracket against the wall
with curved arms facing the door. Be
sure there is enough clearance for the
sensor beam to be unobstructed.
2.
If additional depth is needed, an
extension bracket (see Accessories)
or wood blocks can be used.
3.
Use bracket mounting holes as a
template to locate and drill (2) 3/16"
diameter pilot holes on the wall at
each side of the door, no higher than
6" (15 cm) above the floor.
4.
Attach brackets to wall with
lag screws (not provided).
If using extension brackets or wood blocks,
adjust right and left assemblies to the same
distance out from the mounting surface.
Make sure all door hardware obstructions
are cleared.
Safety Reversing Sensor Bracket
Lag Screws (not provided)
Safety Reversing Sensor Bracket
(Provided with Extension Bracket)
Extension Bracket (See Accessories)
Safety Reversing Sensor
Bracket
(Provided with
Extension Bracket)