LiftMaster GH GH LOGIC 3 Manual - Page 8

INSTALLATION ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL) PHOTO EYES AND SENSING EDGES Sensing devices provided 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 you would like to order or receive more information on safety devices, please contact your local 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 take-up reel. Important Notes: a. Proceed with limit switch adjustments described below before making any sensing edge wiring connections to operator. b. Electrician must hardwire the junction box to the operator electrical box in accordance with local codes. WARNING To prevent possible SEVERE INJURY or DEATH, install reversing sensors when: • The radio is used. CAUTION • The 3-button control station is out of sight of the door. • Or ANY other control (automatic or manual) is used. Reversing devices are recommended for ALL installations. WIRING For wiring of your sensing device to the operator, refer to the wiring diagrams provided on pages 13 and 14. See field connection terminals identified as Reversing Device. TAKE-UP REEL Take-up reel should be installed 12" (30.48 cm) above the top of the door. AVERTISSEMENT COIL CORD ATTENTION Connect operator end of coil cord to junction box (not provided) fastened to the wall approximately halfway up the door opening. WARNING ADJUSTMENT WARNING LIMIT SCWAITCUHTADIJOUSNTMENT NOTE: Make sure the limit nuts are positioned between the limit switches before proceeding with adjustments. 1. Depress retaining plate to allow nut to spin freely. After adjustment, release plate and move nut back and forth to ensure it is fully seated in slot. 2. To increase door travel, spin nut away from limit switch. To decrease door travel, spin limit nut toward limit switch. 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 the limit switch is engaged as door fully seats at the floor. AVERTISSEMENT ATTENTION CLOSE WARNING To avoid SERIOUS personal INJURY or DEATH from electrocution, disconnect electric power BEFORE manually moving limit nuts. ADVERTENCIA AVERTISSEMENT PRECAUCIÓN OPEN AVERTISSEMENT SAFETY (Aux. Close) Limit Switch CLOSE Limit Switch OPEN Limit Switch 8