LiftMaster J J VERSION 2 LOGIC Manual - Page 7
Power Wiring Connections
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POWER WIRING CONNECTIONS Remove the cover from the electrical enclosure. Inside this enclosure you will find the wiring diagram(s) for your unit. Refer to the diagram (glued on the inside of the cover) for all connections described below. If this diagram is missing, call the number on the back of this manual. DO NOT INSTALL ANY WIRING OR ATTEMPT TO RUN THIS OPERATOR WITHOUT CONSULTING THE WIRING DIAGRAM. POWER WIRING 1. WARNING Be sure that the power supply is of the correct WARNING voltage, phase, frequency, and amperage to supply the operator. Refer to the operator nameplate on the DISCONNECT POWER AT THE FUSE BOX BEFORE cover. PROCEEDING. OPERATOR MUST BE PROPERLY GROUNDED AND 2. Using the 1-1/16" dia conduit access PERMANENTLY WIRED IN ACCORDANCE WITH LOCAL ELECTRICAL CODES. NOTE: THE knockout as shown below, bring supply lines to the OPERATOR SHOULD BE ON A SEPARATE FUSED operator and connect wires to the terminals indicated LINE OF ADEQUATE CAPACITY. CAUTION WARNING on the WIRING CONNECTIONS DIAGRAM. ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A QUALIFIED INDIVIDUAL. DO NOT TURN POWER ON UNTIL YOU HAVE FINISHED MAKING ALL POWER AND CONTROL WIRING CONNECTIONS AND HAVE COMPLETED THE LIMIT SWITCH ADJUSTMENT PROCEDURE. WARNING W IMPORTANT: THIS UNIT MUST BE PROPERLY GROUNDED. A GROUND SCREW IS SUPPLIED IN THE ELECTRICAL BOX FOR CONNECTION OF THE POWER SUPPLY GROUND WIRE. FAILURE TO PROPERLY GROUND THIS UNIT COULD RESULT IN ELECTRIC SHOCK AND SERIOUS INJURY. TO AVOID DAMAGE TO DOOR AND OPERATOR, MAKE ALL DOOR LOCKS INOPERATIVE. SECURE LOCK(S) IN "OPEN" POSITION. IF THE DOOR LOCK NEEDS TO REMAIN FUNCTIONAL, INSTALL AN INTERLOCK SWITCH. CAUTION ON THREE PHASE MACHINES ONLY! Incorrect phasing of the power supply will cause the motor to rotate in the wrong direction (open when CLOSE button is pressed and vice-versa). To correct this, interchange any two of the incoming three phase power lines. 1-1/16" dia. Power Wiring Access Hole (2 Near Side) 7/8" dia. Control Wiring Access Hole (Far Side) 7