30
12. Switch the main breaker ON and make sure that power
transfers back to the utility. The generator should shut down
and go through a short cool-down cycle.
13. Shut OFF utility power again to automatically start the
generator. When power has transferred to the generator, close
each of the breakers in the priority load center, one at a time,
until the generator has accepted the entire priority load.
14. Now close each of the breakers in the non-priority sub-panel
one at a time until the generator has accepted the entire
non-priority load. Be aware that should the generator become
overloaded in the process, the Load Shed contactor will
automatically move UP to the disconnect position, removing
power from the non-priority loads. If this happens, it simply
confirms that the load shedding switch is working properly.
Close the remainder of the non-priority breakers.
15. With the generator carrying either the entire load (or the
priority loads if the non-priority loads were shed) re-check
gas pressure to the generator to verify that it’s at the same
level it was before the generator was started.
NOTE: Even if the generator is running smoothly at this point, a
drop in gas pressure indicates that the supply is barely adequate
to supply the generator’s needs. Changes in the generator load,
or additional gas demand by other appliances may affect the
generator’s performance. Verify gas pressure and pipe sizing.
Unhook the manometer and reinstall the port plug.
16. Switch the utility breaker ON to restore utility power to the
home.
17. The generator will continue to run to allow the engine to cool
down before shutting itself OFF.
18. Shut OFF utility power again. The generator should start
and the entire load should transfer to the generator. If the
load is too large, the non-essential load shed switch will
automatically shed the non-priority loads.
19. Close the main breaker to restore utility power and allow the
engine to cool down and shut itself OFF.
Operational tests are now complete. Refer to Appendix F
– Setting the Automatic Exercise Function to complete the
installation.
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