LiftMaster TDC Installation Manual - English French Spanish - Page 22

Wiring WARNING To prevent possible SERIOUS INJURY or DEATH: • ANY maintenance to the operator or in the area near the operator MUST NOT be performed until disconnecting the electrical power and locking-out the power. Upon completion of maintenance the area MUST be cleared and secured, at that time the unit may be returned to service. • Disconnect power at the fuse box BEFORE proceeding. Operator MUST be properly grounded and connected in accordance with national and local electrical codes. The operator should be on a separate fused line of adequate capacity. • ALL electrical connections MUST be made by a qualified individual. • DO NOT install ANY wiring or attempt to run the operator without consulting the wiring diagram. • ALL power wiring should be on a dedicated circuit and well protected. The location of the power disconnect should be visible and clearly labeled. • ALL power and control wiring MUST be run in separately. Power and Ground Power and control wiring must be run in separate conduit to comply with national and local electrical codes. For power wiring, use the appropriate wire gauge. Use conduit knockouts, conduit fittings, and appropriate conduit fittings for wiring as indicated on the electrical box label. 1. Open the operator cover. Image A 2. Run power wires to electrical box according to national and local electrical codes. NOTE: ON THREE PHASE POWER only use two of the power legs cap off the third leg. 3. Attach power and ground wires to appropriate terminals. Incoming power leads go to L1 and L2. Ground is on the EMI filter board. NOTE: The operator must be properly grounded. Failure to properly ground the operator could result in electric shock and serious injury. Image B * Maximum wire gauge that can be connected to the operator's terminal is 12 AWG. When a larger wire gauge is required, the wire must be gauged down to 12 AWG. USE COPPER WIRE ONLY. Voltage Selection NOTE: LiftMaster offers two types of EMI filter boards. However, each operator will ONLY house a single type of board, dependent on operator voltage specification ordered. Reference Image A for 120/ 240Vac and Image B for 480Vac. 1. Locate EMI filter board inside of the electrical box. 2. Remove the Orange voltage sticker covering the voltage connector/s and stick it to the inside of the electrical box. 3. On units with type (A) EMI filter board. Verify incoming voltage and phase1 or phase3 type. 4. Plug the connector to the appropriate plugin labeled 120Vac OR 240Vac. 22