Chamberlain Commercial Protector System CPS-U User manual

COMMERCIAL PROTECTOR SYSTEM®
INSTALLATION INSTRUCTIONS
To reduce the risk of SERIOUS INJURY or DEATH:
• This device is for use ONLY on LiftMaster®Commercial Door
Operators.
• For INDOOR USE ONLY.
• Disconnect power BEFORE installing the Commercial Protector
System®.
• READ AND FOLLOW ALL INSTRUCTIONS.
Facing the door from inside the garage (installation procedures are the same for all door types).
Left Side of Garage Right Side of Garage
Photoelectric Sensor
Photoelectric Sensor
Invisible Light Beam
Protection Area
THE COMMERCIAL PROTECTOR SYSTEM®
IMPORTANT INFORMATION ABOUT THE PHOTOELECTRIC SENSORS
Be sure power to the operator is disconnected.
When properly connected and aligned, the photoelectric sensors will detect an obstruction in the path of its invisible light beam. If an
obstruction breaks the light beam while the door is closing, the door will stop and typically reverse to the full open position.
The photoelectric sensors must be installed inside the garage so that the sending and receiving sensors face each other across the door,
no more than 6" (15 cm) above the floor. Either can be installed on the left or right of the door as long as the sun never shines directly
into the receiving eye lens. This product is not suitable for outdoor use.
The brackets must be securely fastened to a solid surface such as the wall framing. If installing in masonry construction, add a piece of
wood at each location to avoid drilling extra holes in masonry if repositioning is necessary.
The invisible light beam path must be unobstructed. No part of the garage door (or door tracks, springs, hinges, rollers or other
hardware) may 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.
APPLICATION
The Commercial Protector System®(CPS) is suitable for LiftMaster
Commercial Door Operators with a Normally Open (N.O.) sensing
edge input.
The CPS is for use with ancillary entrapment protection devices
only, and not used for primary monitored entrapment protection
devices.
CARTON INVENTORY
PART # DESCRIPTION QTY
CPS-U Photoelectric Sensors with Mounting Hardware 1
41K4629 Commercial Protector Interface 1
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer or birth defects
or other reproductive harm. For more information go to www.P65Warnings.ca.gov

2
INSTALLATION
ASSEMBLE AND MOUNT THE BRACKETS
The following instructions show recommended assembly of the
bracket(s) and “C” wrap based on the wall installation of the
photoelectric sensors on each side of the door or on the door
tracks themselves. There are also alternate mounting methods
which may fit your installation requirements better.
Make sure the wraps and brackets are aligned so the
photoelectric sensors will face each other across the door.
1Fasten the “C” wraps to the mounting brackets having square
holes, using hardware shown.
WALL INSTALLATION
2Connect each assembly to a slotted bracket, using the hardware
shown. Note alignment of 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 inches (10-15 cm) above the floor. Do not exceed
6 inches (15 cm).
5 Attach bracket assemblies with 1/4"x1-1/2" lag screws.
6 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.
DOOR TRACK INSTALLATION
2Discard slotted bracket. Drill 3/8" holes in each track and fasten
securely with hardware.
Mounting Bracket
with Square Holes “C” Wrap
#10-32x3/8"
Screws
#10-32
Lock Nuts
1/4"x1-1/2"
Lag Screws
1/4"-20x12" Carriage Bolts
(with square shoulders)
1/4"-20
Lock Nuts
Mounting Bracket
with Slot
Mounting Bracket with
Square Holes
“C” Wrap
ALTERNATE WALL INSTALLATION ALTERNATE FLOOR INSTALLATION
Mounting Bracket
with Slot
Mounting Bracket
with Square Holes
“C” Wrap
Photoelectric Sensor with Wire
Indicator Light
Floor
Photoelectric Sensor with Wire
Inside
Wall Indicator Light
Mounting Bracket with
Square Holes
Mounting Bracket
with Slot
“C” Wrap
Floor
Attach with Concrete
Anchors (Not Provided)
“C” Wrap
Mounting Bracket with
Square Holes
1/4" Lock Nuts
Door Track
Drill 3/8" Holes
1/4"-20x1/2"
Carriage Bolts
Inside
Wall
Inside
Wall
Inside
Wall

3
INSTALLATION
MOUNT AND WIRE THE PHOTOELECTRIC SENSORS
1 Center each photoelectric sensor in the bracket with the lenses
pointing toward each other across the door.
2 Attach the photoelectric sensors to the brackets with the
provided hardware. Finger tighten the receiving sensor wing
nut. Securely tighten the sending sensor wing nut.
3 Run the photoelectric sensor wires to the operator. Fasten the
photoelectric sensor wires appropriately.
4 Connect the photoelectric sensor wires to the operator (refer to
CPS Wiring Connections, page 5).
Sensor Wire
Indicator Light
“C” Wrap
Wing Nut
1/4"-20x1-1/2" Hex Bolt
Photoelectric
Sensor
Photoelectric Sensor
6" (15 cm) max. above floor
Photoelectric Sensor
6" (15 cm) max. above floor
Invisible Light Beam
Protection Area
Sensor Wires
Connect Sensor Wire to Operator
(refer to CPS Wire Connections, page 5)

4
INSTALLATION
ALIGN THE PHOTOELECTRIC SENSORS
1 Connect power to the operator. The green indicator lights in both the sending and receiving sensors will glow steadily if wiring
connections and alignment are correct.
2 If both green indicator lights are flashing rapidly (and the invisible light beam path is not obstructed), alignment is required:
• Loosen the receiving sensor wing nut to allow slight rotation of the sensor. Adjust sensor vertically and/or horizontally until the
green indicator lights glow steadily.
• When the indicator lights are glowing in both photoelectric sensor, tighten the receiving sensor wing nut.
Indicator Light
Photoelectric Sensor Photoelectric Sensor
6" (15 cm) max. above floor
Indicator Light
6" (15 cm) max. above floor

5
CPS WIRING CONNECTIONS
COMMERCIAL PROTECTOR INTERFACE
TYPICAL WIRING CONNECTIONS
* NOTE: Refer to your owner's manual for wiring diagrams specific to your LiftMaster Commercial Door Operator.
Connection at CPS
Interface Box
Emitter Wire Receiver Wire Mechanical
(Terminal)
Logic 2
(Terminal)
Logic 3-4
(Terminal)
At CPS At CPS At Operator At Operator At Operator
24V 3* 12 13
Common Wire Nut* 13 14
Photoelectric Sensors
BLACK or BROWN BLACK or BROWN BLACK or BROWN
Photoelectric Sensors
WHITE or BLUE WHITE or BLUE WHITE or BLUE
Sensing Edge Input (1/2) 3* 8 8
Sensing Edge Input (2/2) 10* 11 11
24V
Common
INFRARED
BLACK or BROWN
INFRARED
WHITE or BLUE
24 Vac/dc
Power Supply
Photoelectric Sensors
Sending Sensor (Emitter)
and Receiving Sensor (Receiver)
LiftMaster Commercial Door
Operators N.O. Sensing Edge
Input

6
TROUBLESHOOTING
If the sending sensor and receiving sensor indicator lights do not glow steadily after installation, check for:
• Photoelectric sensor alignment
• Obstruction
• Power to the operator
• A short in the wires
• Incorrect wiring between the photoelectric sensors and commercial protector interface
• A broken wire (open wire)
If both green indicator lights are flashing rapidly (and the invisible light beam path is not obstructed), alignment is required.
If the sending sensor and receiving sensor indicator lights are both glowing steadily but interrupting the photoelectric sensors does
not cause the door to reverse when closing, check both photoelectric sensors to make sure one sensor is the sending and the other
is a receiving sensor.
NOTES:
•Direct sunlight to the sending sensor may prevent the operator from closing even when both the sending and receiving indicator lights
are illuminated. A protective cover shielding both sensors from direct sunlight will resolve this issue.
•Professional service is required if the operator closes the door when the photoelectric sensors are obstructed.
•For non-solid state operators, if the door is stopped in a mid position, activation of the sensors will cause the door to open. This is
similar to activating a sensor edge.
TEST THE COMMERCIAL PROTECTOR SYSTEM®
1 Press the OPEN button to fully open the door.
2 Press the CLOSE button to close the door.
3 Obstruct the light beam while the door is closing. The door should stop and reverse.
The operator will not close if the indicator light in either sensor is not glowing steadily, alerting you to the fact that the sensor is
misaligned or obstructed.
To reduce the risk of SERIOUS INJURY or DEATH, the Commercial Protector System®MUST be properly installed and working.

7
HOW TO ORDER REPAIR PARTS
OUR LARGE SERVICE ORGANIZATION SPANS AMERICA
FOR INSTALLATION AND SERVICE INFORMATION
SIMPLY DIAL OUR TOLL FREE NUMBER:
1-800-528-2806
www.liftmaster.com
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION:
• PART NUMBER
• PART NAME
• MODEL NUMBER
ADDRESS ORDERS TO:
THE CHAMBERLAIN GROUP, INC.
Technical Support Group
6050 S. Country Club Road
Tucson, Arizona 85706

© 2010, The Chamberlain Group, Inc.
01-36145B All Rights Reserved