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Wiring
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. DO NOT apply power to the operator until instructed to do so.
•
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 separate conduit.
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.
NOTE: Use caution when removing knockouts to avoid damaging the
internal components.
NOTE: For NEMA4X wiring, please ensure approved watertight fittings
are used
1.
Open the electrical box cover.
2.
Run power wires to electrical box according to national and local
electrical codes.
NOTE: For THREE PHASE POWER, only connect two of the
incoming power legs to L1 and L2. Cap off the third leg. Connect
Ground to GND.
3.
Attach power and ground wires to appropriate terminals. Incoming power leads go to L1 and L2. Connect Ground
wire to GND.
NOTE: The operator must be properly grounded. Failure to properly ground the operator could result in electric
shock and serious injury.
4.
Ensure the power disconnect at the panel box is acceptable to be used as the main disconnect for a single pole,
two pole or a three pole application as applicable. It needs to disengage ALL power legs at the same time.
5.
Ensure proper balancing of the multi-phase multi-wire configuration. The electrician will be responsible to ensure
proper balancing of loads.
* 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 boards (see Image A), verify incoming voltage and phase type.
4.
Plug the connector to the appropriate plugin labeled 120Vac OR 240Vac.
Applying AC Power
DO NOT apply power to the operator until instructed to do so. The Wall Control and Entrapment Protection Devices (if
not C2 constant pressure to close) MUST be installed prior to applying power to the operator.
NOTE: If using an electric driver to secure screws, set clutch to lowest setting.
WARNING
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Image A
Image B
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