Specifications
DERATING FOR ALTITUDE
All light towers are subject to derating for altitude and temperature; this will reduce the available power for operating
to tools and accessories connected to the auxiliary outlets. Typical reductions in performance are 2-4% for every
1000 ft. (305 meters) of elevation and 1% per 10º F (3-5º C) increase in ambient air temperature over 72º F (22.2º C).
TROUBLESHOOTING SHUTDOWN CONDITIONS
LOW OIL PRESSURE SHUTDOWN
1. Check the level of the engine oil with the dipstick. The engine controller will shut the engine down when the oil
pressure is less than 20 psi. Add oil if required.
2. Visually inspect the engine for oil leaks.
3. If the oil level is good, restart the unit and verify the loss of oil pressure. Shut the engine down immediately if the
oil pressure value does not read 5 psi within five (5) seconds.
4. Check the oil pressure sender on the engine block and the connecting wiring for damage. To check for continuity
between the sender and the engine controller, remove the bolts at the top and center of the control panel and
open the panel like a door. Consult the DC wiring diagrams in this manual for the proper path between the
engine controller and the pressure sender.
5. If the oil level, pressure sender and wiring are good, the oil loss may be caused by engine failure. Consult the
ENGINE OPERATION AND MAINTENANCE MANUAL for additional information on excessive oil consumption.
HIGH COOLANT TEMPERATURE SHUTDOWN
1. Check the coolant level in the overflow jug.
2. Restart the engine and read the coolant temperature to verify High Coolant Temperature Shutdown. Stop the
engine immediately if the coolant temperature is 230°F or more.
3. Allow the engine to cool! Add coolant to the overflow jug if it is low and then check the level of coolant in the
radiator. To access the radiator cap, you must remove the small access panel located on top of the generator
enclosure directly above the radiator. Add coolant until it is 3/4” below the filler neck. Replace the radiator cap
and access panel.
4. Check the radiator shroud and ducting for blockage and remove any foreign matter.
5. Inspect coolant hoses, engine block and water pump for visible leaks.
6. Check the tension of the serpentine drive belt for the water pump.
7. Check the coolant temperature sender on the engine block and the connecting wiring for damage. To check for
continuity between the sender and the engine controller, remove the bolts around the control panel and slowly
drop panel down. Consult the DC wiring diagrams in this manual for the proper path between the engine
controller and the pressure sender.
8. If the sender and wiring are good and no other problems are found, restart the engine. Observe the coolant
temperature and shut the engine down immediately if it starts to overheat.
9. Reduce the load on the generator and restart the engine. Observe the coolant temperature and shut theengine
down immediately if it starts to overheat. Consult the ENGINE OPERATION AND MAINTENANCE
MANUAL for additional information on engine overheating.
OVERCRANK SHUTDOWN
1. Check the fuel level in tank.
2. Check for proper operation of the fuel pump.
3. Check air filter for blockage.
4. If the engine will not start, consult the ENGINE OPERATION AND MAINTENANCE MANUAL for additional
information on troubleshooting starting problems.
OVERSPEED OR UNDERSPEED SHUTDOWN
1. Disconnect all loads and restart the generator. Read the frequency (Hz) on the LCD display. With no loads on
the generator, the frequency should read 60.0 Hz.
2. If the frequency is above or below 60.0 Hz, the engine speed will have to be adjusted. See the ENGINE OP-
ERATION AND MAINTENANCE MANUAL for throttle adjustments on mechanically governed units and see the
ELECTRONIC GOVERNOR MANUAL for electronically controlled units.
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