Installation Summary; Shutting Generator Down While Under Load Or During A Utility Outage; Auxiliary Shutdown Switch - Generac Power Systems PowerPact 7.5 kW Installation Manuallines

60 hz air-cooled generators
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With the generator running and loads powered by
generator AC output, turn ON the utility power supply to
the transfer switch. The following should occur:
After approximately 15 seconds, the switch should
transfer loads back to the utility power source.
Approximately one minute after re-transfer, the
engine should shut down.

Installation Summary

1. Verify the installation has been properly performed
as outlined by the manufacturer and meets all
applicable laws and codes.
2. Test and confirm proper operation of the system as
outlined in the appropriate Installation and Owner's
Manuals.
3. Educate the end user on the proper operation,
maintenance and service call procedures.
Shutting Generator Down While
Under Load Or During A Utility
Outage
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
IMPORTANT NOTE: To avoid equipment damage, follow
these steps, in order, during utility outages. Shutdowns
may be required during utility outages to perform routine
maintenance or to conserve fuel.
To turn the generator OFF:
1. Set the main utility disconnect to OFF (OPEN).
2. Set the generator MLCB (generator disconnect) to
OFF (OPEN).
3. Allow the generator to run for a cool-down period of
approximately one minute.
4. At the controller, set the generator to OFF.
5. Remove the 7.5A fuse from the controller.
To turn the generator back ON:
Installation Guidelines for 60 Hz PowerPact™
1. Install 7.5A fuse in controller.
2. Confirm the generator MLCB (generator disconnect)
is OFF (OPEN).
3. At the controller, set the generator to AUTO mode.
4. Generator will start and run. Allow generator to run
and warm up for a few minutes.
5. Set the MLCB (generator disconnect) to ON
(CLOSED).
6. Set the main utility disconnect to ON (CLOSED).
The system now operates in automatic mode.

Auxiliary Shutdown Switch

All generators are provided with an external means to
shut down the generator which complies with the 2017
NEC code requirement. The primary generator shutdown
sequence is described in the previous topic.
See
Figure
on the exterior of the generator back panel. This switch
shuts down the generator and disables restarts.
(000191)
Figure 7-3. Auxiliary Shutdown Switch
NOTE:
Whenever possible, perform the primary
shutdown procedure before disabling the generator with
the auxiliary shutdown switch.
If the auxiliary shutdown switch is open (O), the
generator will not start. The controller displays a High
Temperature alarm and the High Temperature LED on
the controller flashes until the switch is closed (I). Once
the switch is closed (I), the generator will return to either
AUTO mode or OFF mode.
Control Panel/Start-Up/Testing
7-3. An auxiliary shutdown switch is located
005570
005570
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