Chamberlain Protector 87LM User manual

Installation procedures are
the same for sectional and
one-piece doors.
Without a properly working safety reversing
sensor, persons (particularly children) could be
killed by a closing garage door. Read and follow
all instructions.
To protect small children, install the safety
reversing sensor so the beam is no higher than
4"-6" above the garage floor.
Disconnect power to the garage door opener
before installing the Protector System.
Invisible Light Beam
Protection Area
Sensor
Unit Sensor
Unit
— Right Side of Garage —
—Left Side of Garage—
FIGURE 1 Facing the door from inside the garage
The brackets must be securely fastened to a solid
surface such as the studs on either side of the door,
or add a piece of wood at each location if installing in
masonry construction.
The invisible light beam path must be unobstructed.
No part of the garage door (or door tracks, springs,
hinges, rollers or other hardware) can interrupt the
beam while the door is closing. If it does, use a piece
of wood to build out each sensor mounting location to
the minimum depth required for light beam clearance.
The Protector System™
Safety Reversing Sensor Model 87LM
Look at the label on the connector end of each case
to identify the sensors.
The sending eye transmits an invisible light beam to
the receiving eye.
If an obstruction breaks the light beam while the
garage door is closing, the door will stop and reverse
to full open position; and the opener lights will flash
for 5 seconds to alert you to the obstruction.
The units can be installed on either side of the garage
door (Figure 1) as long as the sun never shines
directly into the receiving eye lens, but the brackets
must be connected and fastened so that the sending
and receiving eyes face each other as shown in
Figure 1.
1
WARNING

FIGURE 5 FIGURE 6
2
1/4 x 1-1/2"
Lag Screw
#10 - 32 x 3/8"
Screw 1/4" - 20
Lock Nut
#10 x 32
Lock Nut Staples 1/4" - 20 x 1/2"
Carriage Bolts
Mounting Bracket
With Square Holes

#10-32x3/8"
Screws
"C" Wrap
#10 - 32
Lock Nuts
Garage WALL or DOOR TRACK Installation
Figures 2 , 3 and 4 show recommended assembly of
bracket(s) and "C" wrap based on the wall installation of
the sensors on each side of the garage door as shown
on page 1, or on the garage door tracks themselves.
Figures 5 and 6 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.
Garage Wall or Door Track Installation Procedure
• Fasten the "C" wraps to the mounting brackets with
square holes, using the hardware shown in Fig. 2.
Garage Wall Installation Procedure
• Connect each assembly to a slotted bracket, using the
hardware shown in Fig. 3.Note alignment of
brackets for left and right sides of the door.
• Finger tighten the lock nuts.
• 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 1.
• Attach bracket assemblies with 1/4"x1-1/2" lag screws
as shown in Fig. 3.
• Adjust right and left side bracket assemblies to the
same distance out from mounting surface. Make sure
all door hardware obstructions are cleared. Tighten the
nuts securely.
Garage Door Track Installation Procedure
Discard slotted bracket. Drill 3/8" holes in each track and
fasten securely with hardware as shown in Fig. 4.
"C" Wrap
Inside
Garage
Wall
Mounting Bracket
with Square Holes
Mounting Bracket
with Slot
Alternate Wall Mount
Sensor
Garage
Floor
Indicator Light
Garage
Floor
Inside
Garage
Wall
Alternate Floor Mount
Mounting Bracket
with Slot
Mounting Bracket
with Square Holes
"C" Wrap
Sensor
Indicator Light
Attach with
concrete anchors
(not provided)
Hardware Shown Actual Size
Mounting Bracket
with Slot1/4" - 20
Lock Nuts
1/4 x 1-1/2"
Lag Screws

1/4-20 x 1/2" Carriage Bolts
(with square shoulder)
Inside
Garage
Wall
"C" Wrap
Mounting Bracket
with Square Holes
Garage WALL Installation
Inside
Garage
Wall
"C" Shaped
Wrap
Mounting Bracket
with Square Holes
1/4-20 x 1/2"
Carriage Bolts
1/4 " Lock Nuts
Drill 3/8"
Holes
Garage
Door Track
Garage DOOR Track Installation
FIGURE 4
FIGURE 3
FIGURE 2

Invisible Light Beam
Protection Area
Sensor
Sensor
Connect Wire to
Opener Terminals
Bell Wire
Bell Wire Finished
Ceiling
RED-1 WHT-2 BLK-3
OPENER TERMINAL SCREWS
Sensor
Connections
Door Control
Connections
(dotted line)
• Center each sensor unit in a "C" wrap with lenses
pointing toward each other across the door.
• Secure sensors with the hardware shown in Figure
7. Finger tighten the wing nut on the receiving eye to
allow for final adjustment. Securely tighten the
sending eye wing nut.
• Run wires from both sensors to the opener as
shown in Figure 7. Use insulated staples to secure
the wire to the wall and ceiling.
• Connect both sets of wires to the opener terminals
as shown (depending upon your model).
• Plug in the opener. If your opener has the Multi-
Function Door Control, make sure the Lock Feature
is off . Red indicator lights in both the sending and
receiving eyes will glow if wiring connections and
alignment are correct.
If the indicator lights are blinking (and the invisible
light beam path is not obstructed), alignment is
required.
• Loosen the receiving eye wing nut to allow slight
rotation of unit. Adjust sensor vertically and/or
horizontally until the red indicator light glows .
• When indicator lights are glowing in both units,
tighten the wing nut in the receiving eye unit.
1/4-20 x 1-1/2"
Hex Bolt
"C" Wrap Wire
Sensor
Wing Nut
Indicator Light
1/4-20 x 1-1/2"
Hex Bolt
Wing Nut
Hardware Shown Actual Size
FIGURE 7
3
BLK
WHT
RED
Sensor Connections
Connect Sensor Wires
to Opener Terminals

Trouble Shooting
TEST THE PROTECTOR™ SYSTEM
• Press the remote control push button to open the door.
• Place the opener carton in the path of the door.
• Press the remote control push button to close the door.
The door will not move more than an inch, and the
opener light(s) will flash.
The garage door opener will not close from a remote
control if the indicator light in either sensor is
blinking (alerting you to the fact that the sensor is:
a. not connected, b. misaligned or c. obstructed).
The garage door can be closed by pressing and
holding the Door Control push button until down travel
is completed.
Without a properly working Protector™
System, persons (particularly children) could
be seriously injured or killed by a closing
garage door. Repeat this test once a month.
Professional service is required if the opener
closes the door when the Protector System is
obstructed.
TEST THE SAFETY REVERSE SYSTEM
TEST:
• Place a one-inch board (or a 2x4 laid flat) on the
floor, centered under the garage door.
• Operate the door in the down direction. The door
must reverse on striking the obstruction.
ADJUSTMENT:
If the door stops on the obstruction, it is not traveling
far enough in the down direction.
• Increase the DOWN limit by turning the DOWN limit
adjustment screw counterclockwise 1/4 turn.
• Repeat the test.
On a sectional door, make sure limit adjustments
do not force the door arm beyond a straight up
and down position.
• When the door reverses on the one-inch object,
remove the obstruction and run the opener through
3 or 4 complete travel cycles to test adjustment.
If the door will not reverse after repeated
adjustment attempts, call for professional door
service.
GARAGE DOOR
1 Inch Obstruction
Failure to test and adjust the safety reverse
system may result in serious injury or death
from a closing garage door. Repeat this test
once a month and adjust as needed.
One-Inch board (or a 2x4 laid flat)
1. If the sending eye or receiving eye indicator light
does not glow after installation, check for:
• Electric power to the opener.
• A short in the black/white wires. These can occur
under staples or at screw terminal connections.
• Incorrect wiring between sensors and opener.
• An open wire (wire break).
2. If only the receiving eye indicator light is off (and
the invisible light beam path is not obstructed),
check for an open wire to the receiving eye.
3. If both sensors are blinking, realign or remove
obstruction.
©1993, The Chamberlain Group, Inc.
114A1564G All Rights Reserved Printed in Mexico
WARNING
WARNING
2-strand black & white wire with connector 41B4115
Safety Sensor Kit (receiving and sending eyes only) 41A4373
Safety sensor hardware bag 41A4116
C-Wrap Bracket 12B483
Square Hole Bracket 12B484
Slotted Bracket 12B485
Replacement Parts
TOLL FREE NUMBER - 1-800-528-9131