Operation; Testing The Automatic Transfer Switch - Briggs & Stratton 071036 Guide D'installation Et D'utilisation

Operation

To select automatic transfer operation, do the following:
1. In transfer switch, set utility disconnect circuit breaker
to "ON" position.
2. In transfer switch, set generator disconnect circuit
breaker to "ON" position.
3. Install 15 Amp fuse in generator's control panel.
4. Set generator's circuit breaker to "ON" position.
5. Set generator's system switch to "AUTO" position.
The system will now be in automatic operation mode.
When the generator is providing power to the transfer
switch, the transfer switch control board 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 the 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.
Enclosure Door
To open door, press the spring-load door lock to the right
and pull down on the door.
To close and latch door, push door closed against enclosure.
While in this position, push door upwards. This will cause
spring-load door lock to engage and latch door in place.
Enclosure door MUST be closed and latched at all times
except when system is being serviced.

Testing the Automatic Transfer Switch

Turn the utility disconnect circuit breaker feeding the
transfer switch contactor to the "OFF" position. The
system's automatic sequence will initiate. To return to utility
power, turn the utility disconnect circuit breaker to the
"ON" position.
Utility Fail
The generator 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. Use
jumper on transfer switch control board to select delay of
20 seconds or 50 seconds.
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 power 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.
11