LiftMaster T T LOGIC VERSION 2 Manual - Page 7

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL) PHOTO EYES & SENSING EDGES Sensing devices supplied for door industry type operators with an isolated normally open (N.O.) dry contact output are compatible with your operator. This includes pneumatic and electric edges, and through beam and retro reflective photo eyes. If your door does not have bottom safety photo eyes or a sensing edge and you wish to add a safety device to your application, please contact your local LiftMaster Authorized Dealer. If not pre-installed by the door manufacturer, mount the sensing edge on the door according to the instructions provided with the edge. The sensing edge may be electrically connected by either coiled cord or takeup reel. Important Notes: a) Proceed with Limit Switch Adjustments before making any sensing edge wiring connections to operator as described below. b) Electrician must hardwire the junction box to the operator electrical box in accordance with local codes. NOTICE IT IS STRONGLY RECOMMENDED THAT A SAFETY PHOTO EYE OR SENSING EDGE BE USED IN CONJUNCTION WITH THE OPERATOR. WIRING: For wiring of your sensing device to the operator, refer to the wiring diagrams supplied on pages 13 and 14. See field connection terminals identified as Reversing Device. TAKE-UP REEL: Take-up reel should be installed 12" above the top of the door. COIL CORD: Connect operator end of coil cord to junction box (not supplied) fastened to the wall approximately halfway up the door opening. LIMIT SWITCH ADJUSTMENT MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE PROCEEDING WITH ADJUSTMENTS. 1. To adjust limit nuts depress retaining plate to allow nut to spin freely. After adjustment, release plate and ensure it seats fully in slots of both nuts. 2. To increase door travel, spin nut away from actuator. To decrease door travel, spin limit nut toward actuator. 3. Adjust open limit nut so that door will stop in open position with the bottom of the door even with top of door opening. 4. Repeat Steps 1 and 2 for close cycle. Adjust close limit nut so that actuator is engaged as door fully seats at the floor. CLOSE Limit Switch WARNING TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM ELECTROCUTION, DISCONNECT ELECTRIC POWER BEFORE MANUALLY MOVING LIMIT NUTS. If other problems persist, call our toll-free number for CAUTION assistance - 1-800-528-2806. OPEN Limit Switch Actuator WA SAFETY (Aux. Close) Limit Switch 7 Retaining Plate