LiftMaster BG770 Industrial-Duty Single Arm Barrier Gate Operator - Manual (Page 13)

13
ELECTRICAL OPERATION
The BG770 and BG790 barrier gate operators are designed to
provide years of trouble-free operation. The gate may be operated
by means of the two button control station, or by other means if
provided.
ON/OFF POWER SWITCH
The gate is provided with an ON/OFF power switch. To shut power
off, remove the access cover and move the toggle switch on the
right side of the main electrical cabinet to the “OFF” position.
OVERLOAD PROTECTION
The motor is protected by either a manual reset (Single Phase
unit) or automatic reset (3 phase unit) thermal overload protector.
The overload protector will trip when the motor temperature is too
hot.
DO NOT ATTEMPT TO BYPASS THIS UNIT
If the overload trips, the gate could start by itself when the
overload is reset (either manual or automatic). Exercise caution
when resetting the overload. On one phase units, the reset
button is located on the cover of the electrical cabinet.
If after resetting, the overload continues to trip, consult a qualified
service company.
MANUAL OPERATION
ACCESS CONTROL “EMERGENCY” BYPASS
To open the gate in an emergency, remove the keyed access cover
and open the electrical cabinet. Flip the AUTO/MANUAL switch to
the “MANUAL” position.
The gate arm will remain in the up position, and no other control
device will have any effect until the switch is set back to the
“AUTO” position.
O P E R A T I N G I N S T R U C T I O N S
Keep hands clear of moving parts. The motor will start when
AUTO/MANUAL switch is flipped to the “MANUAL” position.
CAUTION