16
Maintenance
Before performing any generator maintenance, always
perform the following steps:
1. Set generator circuit breaker to its OFF position.
2. Turn the generator off.
3. Remove control board fuse from control board.
4. Utility voltage is present at generator control board.
Disconnect power before servicing control board by
removing the fuses from the transfer switch.
5. After all servicing has been completed, replace fuses
in transfer switch, replace control board fuse in
control board, set circuit breaker
ON
and turn the
generator on.
Servicing the System
The generator may have to run for long periods of time
with no operator present. For that reason, the system is
equipped with sensors that automatically shut down the
generator in the event of potentially damaging conditions,
such as low oil pressure, high temperature, over speed, and
other conditions.
The generator’s control board shows possible shutdown
alarms descriptions on the digital display.
The possible shutdown alarms are listed below:
• Overspeed
• Underspeed
• Low Oil Pressure
• High Coolant Temperature
• External Shutdown 1
• External Shutdown 2
• External Shutdown 3
• GCB (Generator Circuit Breaker) Fail
• Generator Overvoltage
• Generator Undervoltage
• Generator Overfrequency
• Generator Underfrequency
• Generator CCW Rotation
• Start Fail
• Stop Fail
• Battery Flat
• Voltage Autodetect
Reset Shutdown Alarm Detection System
The operator must reset the shutdown alarm detection
system each time it activates.
Refer to the
Control Panel Application Guide
supplied with
this generator for more detailed information on resetting the
Shutdown Alarm Detection System.
Overspeed
This shutdown alarm is indicated by
Overspeed
showing
on the digital display. This condition occurs if the engine
speed in greater than 115% of nominal engine RPM, which is
derived from generator frequency.
To remedy the problem, contact your installer or an
authorized dealer.
Underspeed
This shutdown alarm is indicated by
Underspeed
showing on
the digital display. This condition occurs if the engine speed
drops under the nominal engine RPM.
To remedy the problem, contact your installer or an
authorized dealer.
Low Oil Pressure
This shutdown alarm is indicated by
Low Oil Pressure
on
the digital display. The unit is equipped with an oil pressure
switch that uses normally closed contacts held open by
engine oil pressure during operation. Should oil pressure drop
below the 8 psi range, switch contacts close and the engine
will shut down.
To remedy the low oil pressure condition, add the
recommended oil to the FULL mark on the dipstick or contact
your installer or an authorized dealer.
Shutdown Alarm Detection System
NOT
for
REPRODUCTION
