Lift-master 90 254000 User Manual

APPLICATION

Available on single phase operators and on three phase, fractional horsepower operators (standard on three phase integral horsepower models) not available in conjunction with logic control board (L) operators.

FUNCTIONS

This current sensitive relay replaces the bi-metal heat sensor that is standard in three phase fractional horsepower motors. The relay may be adjusted to match the motor overload amperage and will trip if this amperage is exceeded, dropping out the reversing contactor and cutting off power to the overload motor. Must be factory installed.

WIRING

Refer to the wiring diagram provided with the operator. If this diagram is missing, or you are unsure of wiring requirements please call Technical Support @ 1-800-528-2806.

90254000

OVERLOAD RELAY

MODIFICATION