Controlled Products Systems Group CPS-RPEN4 - Manuel (Page 8)

8
TROUBLESHOOTING
REPLACEMENT PARTS LIST
ALIGN THE PHOTOELECTRIC SENSOR AND REFLECTOR
TEST THE LIFTMASTER ® PROTECTOR SYSTEM
The photoelectric sensor and refl ectors must be on the same horizontal plane to each other. When properly
wired and aligned the amber LED within the photoelectric sensor will not be illuminated. The alignment LED
within the photoelectric sensor will blink rapidly when the eye is not at the optimal positioning. If the LED is
solidly illuminated this indicates it is powered up properly and is not aligned with the refl ector.
Commercial door installations:
The photoelectric sensor works on the close cycle on a LiftMaster ® commercial door operator only. With
the door in the full open position place an obstruction in the path of the photoelectric sensor and then try a
CLOSE command. The operator should not move. Now remove the obstruction and give the operator a close
command. The door should close and when the path of the photoelectric sensor is obstructed the door should
reverse.
Gate installations:
The photoelectric sensor can be installed to work on either the open or closing cycles. Refer to the gate
operator installation manual for more information.
Symptom Cause Resolution
No alignment LED seen 1. Not wired properly.
2. Wired properly and aligned with
refl ector.
1. Check wiring. Polarity sensitive.
2. None. Working properly.
Alignment LED on solid Wired properly but NOT aligned with
the refl ector. Adjust photoelectric sensor to refl ector
until the LED goes out.
Alignment LED blinking Indicates the photoelectric sensor is
not optimally aligned with the refl ector. Adjust photoelectric sensor to refl ector
until the LED goes out.
P/N: Description
RPEN4-BKT Mounting Bracket
RPEN4-RFLCTR Refl ectors with Support Bracket
1-800-528-2806
www.liftmaster.com