Transfer To Utility Power Source; Automatic Transfer Operation; Automatic Sequence Of Operation; Utility Failure - Generac Power Systems G0065510 Owner's Manual

Operation

Transfer to Utility Power Source

Shut down generator and transfer to utility source after
utility power has been restored. Proceed as follows to
manually transfer to utility power and shut down the
generator:
1. Set the MLCB (generator disconnect) to OFF
(OPEN).
2. Run engine for one minute at no-load to stabilize
the internal temperature.
3. Press the OFF mode button on the control panel.
The engine will shut down.
4. Verify utility power supply to the transfer switch is
turned OFF.
5. Move the main contacts to the UTILITY position
(loads connected to the utility power source) using
the manual transfer handle (A in
inside the transfer switch.
6. Turn on the utility power supply to the transfer
switch using the means provided.
7. Press the AUTO mode button on the control panel.
8. Return the MLCB (generator disconnect) to ON
(CLOSED).
9. Close and lock the lid.

Automatic Transfer Operation

Proceed as follows to select automatic operation:
1. Verify transfer switch main contacts are set to
UTILITY (loads connected to the utility power
source).
2. Verify normal utility power source voltage is
available to loads connected to the transfer switch.
3. Press the AUTO mode button on the generator
control panel.
4. Set MLCB (generator
(CLOSED).
The generator will start automatically when utility source
voltage drops below a preset level. Loads are transferred
to standby power source after the unit starts.
22
Figure 3-11)
disconnect) to ON
Automatic Sequence of
Operation

Utility Failure

If the generator is set to AUTO, when utility fails (below
65% of nominal) a five second (dealer programmable)
line interrupt delay time is started. The engine cranks and
starts if utility power is still unavailable when the timer
expires. An engine warm-up timer will be initiated once
the engine is started. Timer duration varies depending on
whether or not Cold Smart Start
controller will transfer the load to the generator when the
warm-up time expires. If the utility power is restored
(above 80% nominal) at any time from the initiation of the
engine start until the generator is ready to accept load
(warm-up time has not elapsed), the controller completes
the start cycle and runs the generator through its normal
cool down cycle. However, the load will remain on the
utility source.

Cranking

The system will control the cyclic cranking as follows:
•
9 kW Unit: five cranking cycles as follows: 15
seconds cranking, 7 seconds resting, followed by
four additional cycles of 7 seconds cranking
followed by 7 seconds resting.
•
11–22 kW Units: five cranking cycles as follows:
16 seconds cranking, 7 seconds resting, 16
seconds cranking, 7 seconds resting, followed by
three additional cycles of 7 seconds cranking
followed by 7 seconds resting.
NOTE: An alarm will be triggered if the generator does
not start after these five attempts.
Owner's Manual for 60 Hz Air-Cooled Generators
is enabled. The