Maintenance; Fuses - Generac Power Systems Guardian 005240 Installation And Owner's Manual

Maintenance

Figure 3.3 – Low Oil Pressure and
High Temperature Switches
Low Oil Switch
Oil Filter
Oil
Drain
Hose
3.6.3 OVERCRANK
This feature prevents the generator from damaging itself when it
continually attempts to start and another problem, such as no fuel
supply, prevents it from starting. The unit will crank and rest for
a preset time limit. Then, it will stop cranking, and the LED on the
generator control panel will light indicating an overcrank failure.
The AUTO/OFF/MANUAL switch will need to be set to OFF and then
back to AUTO to reset the generator control board.
If the fault is not repaired, the overcrank feature will continue
to activate.
3.7.3.1 Approximate Crank Cycle Times
7kW Units:
• 15 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
If the unit fails to start, the overcrank alarm LED will be illumi-
nated.
10kW, 13kW and 16kW Units:
• 16 seconds ON
• 7 seconds OFF
• 16 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
18
High Temp Switch
NOTE:
If the unit fails to start, the overcrank alarm LED will be illumi-
nated.
3.6.4 OVERSPEED
This feature protects the generator from damage by shutting it
down if it happens to run faster than the preset limit. This protec-
tion also prevents the generator from supplying an output that
could potentially damage appliances connected to the generator
circuit. Contact the nearest Authorized Dealer if this failure
occurs.
3.6.5 RPM SENSOR FAILURE
During cranking, if the board does not see a valid RPM signal
within three (3) seconds, it will shut down and latch out on RPM
sensor loss.
During running, if the RPM signal is lost for one full second the
board will shut down the engine, wait 15 seconds, then re-crank
the engine.
• If an RPM signal is not detected within the first three (3) sec-
onds of cranking, the control board will shut the engine down
and latch out on RPM sensor loss.
• If the RPM signal is detected the engine will start and run nor-
mally. If the RPM signal is subsequently lost again, the control
board will try one more re-crank attempt before latching out and
flashing the overspeed LED.
3.6.6 LOW BATTERY
The microprocessor will continually monitor the battery voltage
and turn on the Low Battery LED if the battery voltage falls below
11.0 volts for one (1) minute. No other action is taken on a low bat-
tery condition. Low battery voltage is a non-latching alarm which
will automatically clear if the battery voltage rises above 11.0 volts.
Battery voltage is NOT monitored during the crank cycle.
4.1

FUSES

The 15-amp fuse on the generator panel protects the DC control
circuit against overload (Figure 4.1). This fuse is wired in series
with the battery output lead to the panel. If this fuse element has
melted open, the engine will not be able to crank or start. Replace
this fuse using only an identical 15-amp replacement fuse. To
replace the fuse, push the fuse holder cap down and rotate it
counterclockwise. Whenever the fuse is removed or replaced, the
exercise timer needs to be reset.
Figure 4.1 – Generator Control Panel
CONTROL AND INFORMATION CENTER
AUTO. OFF MAN.
SYSTEM FUSE
15A SET
EXERCISE
ASSY: 0F8418/0F8419
TIME
SYSTEM SET
LOW BATTERY
LOW OIL
HIGH TEMP
OVER SPEED
NO RPM SENSE IF FLASHING
OVER CRANK
FLASHING GREEN LED=
NO UTILITY SENSE
5 FLASHING RED LEDS=
EXERCISER NOT SET