Instruction manual

23
SECTION D: For all operator control types
Adjustment of door travel is done by moving the limit cams on the threaded shaft. The position of the 4 limit
switches are factory adjusted and should not be altered. The limit switches are:
- “Open” limit switch: End of door travel in the fully open position
- “Closed” limit switch: End of door travel in the fully closed position
- “Advanced Open” or “Auxiliary advanced closed” limit switch:
A) For relay logic operators this advanced open limit switch is used for open/close devices or timer
to close features.
B) For logic board this auxiliary closed limit switch is used for open/close devices used when
motor direction is reverse of standard.
- “Advanced Closed” Limit switch: Used to prevent reversing device from reversing
door when door is almost fully closed.
To adjust door travel:
1. Open cycle: Depress cam plate and spin “Open” limit cam away from “Open” limit switch to increase door
travel or spin “Open” limit cam towards the “Open” limit switch to decrease door travel. After each adjustment
ensure that cam plate fully engages in slots of both limit nuts.
2. Adjust “Open” limit cam so that door stops at the desired fully open position.
3. Close cycle: Depress cam plate and spin “Close” limit cam away from “Close” limit switch to increase door
travel or spin “Close” limit cam towards the “Close” limit switch to decrease door travel. After each adjustment
ensure that cam plate fully engages in slots of both limit nuts.
4. Adjust “Close” limit cam so that door stops at the desired fully closed position.
LIMIT SWITCH ADJUSTMENT
WARNING
TO REDUCE THE RISK OF INJURY OR DEATH:
DO NOT ATTEMPT TO MAKE LIMIT SWITCH ADJUSTMENTS UNLESS
POWER HAS BEEN ELECTRICALLY DISCONNECTED