LiftMaster CSW200UL CSW200UL W/ SURGE SUPPRESSION & RADIO RECEIVER Manual - Page 26

110Vac EXTERNAL LOOP DETECTOR WIRING (Sold Individually) 110Vac "Center" Loop Detector: Allows gate to stay open when vehicles are obstructing path. Caution: This option is for all vehicles including ones less than 14 feet long. Center loop system requires two safety loops. Center Loop 110Vac "Safety" Loop Detector: Allows gate to stay open when vehicles are obstructing path. Caution: Suggested for vehicles 14 feet or longer. If a vehicle is shorter, a center loop system is recommended and should be installed. If the "Inside" and "outside" safety loops are connected to the same loop detector: • They should be series connected to the detector. • Have the same dimensions. • Have the same number of wire turns. (See table below.) Safety Loop NOTE: Use separate 110Vac power for each loop detector. 110Vac "Exit" Loop Detector: Allows gate to automatically open for exiting vehicles. Exit Loop Installing Insulated Loop Wire Number of Wire Turns Needed for Loop Sizes Loop Perimeter 10 feet to 13 feet 14 feet to 26 feet 27 feet to 80 feet 80 feet and up Number of Wire Turns 4 3 2 1 The wire is continuously wound in the loop saw cut for the required number of turns. One turn shown (refer to table). Saw Cut The wire MUST be twisted together 6 twists per foot from the end of the feeder slot to the loop detector. Remove sharp inside corners by making corner cuts. Home Run 1/8" to 1/4" Width Saw Cut Feeder Slot Contact your local dealer for more information about loop detectors. Road Surface Sealant Backer Rod Recommended Loop Wire XLPE 12-18 gauge (Use heavier wire gauge for a more durable loop.) Insulated loop wire 3 turns shown, amount varies. Refer to table. 2" to 2.5" Depth Saw Cut 24 NOTE: Wire mesh or reinforcement imbedded in the road surface should be cut away a minimum of 6 inches from the perimeter of the loop.