Chamberlain RJO20C Mode D'emploi page 18

Installation
(continued)
INSTALLING THE BRACKETS
The brackets house the safety reversing sensors in a fixed, secure position so the safety reversing sensors will face
each other across the garage door, with the beam no higher than 6" (15 cm) above the floor. Be sure power to the
opener is disconnected.
Choose one of the following installations.
OPTION A: Track Installation (Recommended)
1. Slip the curved arms over the rounded edge of
each door track, with the curved arms facing
the door, and make sure brackets measure no
higher than 6" (15 cm) above the floor.
2. Snap bracket into place against the side of the
track. It should lie flush, with the lip hugging
the back edge of the track, as shown.
If your door track will not support the bracket
securely, see Option B: Wall Installation.
OPTION B: 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 (Model 041A5281-1) or wood blocks
can be used. See Accessories section.
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.
If Option B will not work, see Option C: Floor
Installation.
OPTION C: 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.
Door
Door
Extension Bracket (See Accessories)
Door
(Provided with
Extension Bracket)
Door
18
Door Track
Safety Reversing Sensor
Bracket
Fasten Wood Block to Wall with
Lag Screws (not provided)
Safety Reversing Sensor Bracket
Lag Screws (not provided)
(Provided with Extension Bracket)
Safety Reversing Sensor
Bracket
Attach with Concrete Anchors
(not provided)
Safety Reversing Sensor Bracket