Install The Safety Reversing Sensor - Chamberlain Security + 9902C Owner's Manual

Installation Step 4

Install the Safety Reversing Sensor

(Receiving and Sending Eyes)
Figures 1 and 2 show assembly of brackets and "C" wrap
based on the recommended installation of the sensors on
each side of the garage door as shown on page 16.
However, Figures 3 and 4 are variations which may fit
your installation requirements better. Make sure the
wraps and brackets are aligned so the sensors will
face each other across the garage door.
1. Fasten the "C" wraps to the mounting brackets having
square holes, using the hardware shown in Figure 3.
2. Connect each assembly to a slotted bracket, using the
hardware shown in Figure 2.
Note the alignment of the brackets for left and
right sides of the door.
3. Finger tighten the lock nuts.
4. Use bracket mounting holes as a template to locate and
drill (2) 3/16" diameter pilot holes on both sides of the
garage door, 4"-6" above the floor but not exceeding
6". (See warning on page 16.)
5. Attach bracket assemblies with #14-10x1-1/2" HH
lag screws as shown in Figure 2.
6. Adjust right and left side bracket assemblies to the
same distance out from the mounting surface. Make
sure all door hardware obstructions are cleared.
Tighten the nuts securely.
Figure 3
Alternate Wall Mount
Inside
Garage
Wall
Mounting Bracket
with Slot
Garage
Floor
#10x32
#10-32x3/8"
Screw Lock Nut
Mounting Bracket
with Square Holes
"C" Wrap
Sensor
with wire
Indicator Light
Hardware Shown Actual Size
#14-10x1-1/2" HH
Lag Screw
Figure 1
Mounting Bracket
With Square Holes
#10 - 32
Lock Nuts
Figure 2
#14-10x1-1/2" HH
Lag Screws
Inside
Garage
Wall
Mounting Bracket
1/4" - 20
Lock Nuts
Figure 4
Alternate Floor Mount
Inside
Garage
Sensor with wire
Wall
"C" Wrap
Garage
Floor
Staples
17
"C" Wrap
#10-32x3/8"
Screws
1/4-20 x 1/2" Carriage Bolts
(with square shoulder)
"C" Wrap
with Slot
Mounting Bracket
with Square Holes
Indicator Light
Mounting Bracket
with Square Holes
Mounting Bracket
with Slot
Attach with
concrete anchors
(not provided)
1/4"-20x1/2" 1/4"-20
Carriage Bolts Lock Nut