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Operation
Owner’s Manual for 60 Hz Air-Cooled Generators 17
Manual Transfer Operation
Prior to automatic operation, manually exercise the
transfer switch to verify that there is no interference with
proper operation of the mechanism. Manual operation of
the transfer switch is required if electronic operation
should fail.
Transfer to Generator Power Source
1. Verify generator is OFF.
2. Set the main line circuit breaker (MLCB) (generator
disconnect) to OFF (OPEN).
3. Turn off the utility power supply to the transfer
switch using the means provided (such as a main
line utility breaker).
4. Use the manual transfer handle (A in Figure 3-10)
inside the transfer switch to move the main
contacts to STANDBY (loads connected to the
standby power source).
5. Press the control panel MANUAL button to crank
and start the engine.
6. Allow the engine to stabilize and warm up for a few
minutes.
7. Set the MLCB (generator disconnect) to ON
(CLOSED). The standby power source now
powers the loads.
Figure 3-10. Manual Transfer Switch Operation
(000132)
DANGER
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
in death or serious injury, and equipment damage.
002565
A
MANUAL
• Will not transfer to generator if utility is present.
• Will transfer to generator if utility fails (below 65% of nominal for five consecutive seconds)
after warm-up.
• Will transfer back when utility returns for 15 consecutive seconds. The engine will continue to
run until removed from the MANUAL mode.
AUTO
• Will start and run if utility fails for five consecutive seconds (factory default).
• Will start an engine warm-up timer (duration varies when Cold Smart Start is enabled).
–Will not transfer if utility subsequently returns.
–Will transfer to generator if utility is not present.
• Will transfer to utility once utility returns (above 80% of nominal) for 15 seconds.
• Will not transfer to utility unless utility returns. The generator will shut down if the OFF button
is pressed or a shutdown alarm is present.
• Once utility power is returned, the generator will shut down after one minute cool-down time.
EXERCISE
• Will not exercise if generator is already running in either AUTO or MANUAL mode.
• During exercise, the controller will only transfer if utility fails during exercise for 10 seconds,
and will switch to AUTO.
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