Briggs & Stratton 71009, 71008, 71010 manual System Operation, Testing the Automatic Transfer Switch

OPERATION

SYSTEM OPERATION

To select automatic transfer operation, do the following:

1A. For models 071008 & 071009, set service disconnect switch that sends utility power to transfer switch contactor to “On” position.

B.For models 071010 & 071011, set service disconnect switch that sends utility power to transfer switch utility disconnect circuit breaker to “On” position.

2.For models 071010 & 071011, set transfer switch utility disconnect circuit breaker 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. Should loads be 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 service disconnect feeding the transfer switch contactor to the “Off” position.The Automatic Sequence of the system will follow.To go back to utility power, turn the service disconnect to the “On” position.

Automatic Sequence

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 fixed at 20 seconds or 50 seconds with removal of jumper on control board.

Transfer

Transfer from utility to standby supply occurs after standby 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 standby 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.

When Calling the Factory

Before contacting Briggs and Stratton Power Products regarding service or repair of this transfer switch, obtain the Model Number and Serial Number from the unit data decal located on or inside the enclosure.

To contact Briggs and Stratton Power Products call 1-800-743-4115, between 8:00 AM and 5:00 PM CT.

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