Briggs & Stratton Portable Generator - Manual (Page 10)

10 BRIGGSandSTRATTON.COM
Controls
Other than a Manual Override lever, there are no operator
controls because this is an automatic transfer switch. The
manual override is to be used only by licensed professionals.
Operation
To select automatic transfer operation, do the following:
1. Set utility service disconnect circuit breaker in transfer
switch to “On” position.
2. Set generator disconnect circuit breaker in transfer
switch to “On” position.
3. Set generator’s main circuit breaker to its “On” position.
4. Install 15 Amp fuse in control panel on generator.
5A. If generator is equipped with a system ON/OFF switch,
set switch to “ON” position.
B. If generator is equipped with a AUTO/OFF/MANUAL
switch, set switch to “AUTO” position.
The system will now be in automatic operation mode.
When the generator is providing power to the transfer
switch, the controller is constantly monitoring generator
power. If the air conditioner is called to run, and there is
sufficient generator power available, the controller will close
contacts “A-A” to air conditioner contactor. Contacts “B-B”
will open before contacts A-A close. If loads are too great for
generator, contacts A-A and/or B-B will open. When air
conditioning is not needed, A-A will open. If enough power is
available, B-B will close.
Testing the Automatic Transfer Switch
Turn the utility disconnect circuit breaker in the transfer
switch, to the “Off” position. The automatic sequence will
follow. To go back to utility power, turn the utility disconnect
circuit breaker to the “On” position.
Utility Fail
The Home Standby Generator set senses when utility voltage
is below 70 percent of nominal. Engine start sequence is
initiated after 6 second time delay.
Engine Warm-Up
Time delay to allow for engine warm-up before transfer is
fixed at 20 seconds or 50 seconds with removal of jumper
on control board.
Transfer
Transfer from utility to generator supply occurs after voltage
is above set levels. Minimum engine run time is 5 minutes
after transfer.
Utility Pickup
Voltage pickup level is 80 percent of nominal voltage.
Retransfer
Retransfer from generator to utility supply is approximately
10 seconds after utility voltage supply is above pickup level
and minimum run time is completed.
Engine Cool Down
Engine will run for 60 seconds after retransfer.