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Briggs & Stratton Power Products Backup Power System
Owner’s Manual
13
AUTOMATIC OPERATION
To select automatic transfer operation, do the following:
1. Set the main distribution panel circuit breaker that
sends utility voltage to the transfer switch to ON.
2. Set the AUTO/OFF/MANUAL switch to AUTO.
3. Set the generator’s main circuit breaker to its ON
position.
Checking Automatic Operation
To check the system for proper automatic operation,
proceed as follows:
1. Check that AUTO/OFF/MANUAL is set to OFF.
2. Apply utility power to the Automatic Transfer Switch
by turning ON the main distribution panel circuit
breaker.
3. Set the AUTO/OFF/MANUAL switch to AUTO.The
Automatic Power System is now ready for automatic
operation.
4. Turn OFF the main distribution panel circuit breaker
sending power to the automatic transfer switch.
The engine will crank and start once the utility voltage
drops out and the sensor has timed out.After starting, the
Automatic Power Transfer System will transfer essential
circuit sub-panel loads to the generator. Let the system go
through its entire automatic operation sequence.
5. With the generator output supplying its loads, turn
ON the main distribution panel circuit breaker that
supplies utility power to the Automatic Power Transfer
Switch.
6. After about 6 seconds, the automatic transfer switch
will transfer loads back to the utility power.
7. About one minute after re-transfer, the engine will shut
down.
This completes the test procedures for automatic
operation.The backup power system will now start
automatically when utility power is lost and will supply
power to the essential circuit sub-panel.
Stopping the System
To disable the power transfer system for maintenance:
1. Ensure that the main distribution panel circuit breaker
that sends utility voltage to the transfer switch is ON.
2. Set the AUTO/OFF/MANUAL switch to OFF.
3. Set the generator’s main circuit breaker to its OFF
position.
Setting Exercise Timer
The Backup Power System is equipped with an exercise
timer that will start and exercise the system once every
seven days. During this exercise period, the unit runs for
approximately 12 minutes and then shuts down. Electrical
load transfer DOES NOT occur during the exercise cycle
(unless an utility power outage occurs).