Warnings - Whisper Power W-SQ20 User Manual

PROBLEM
Sooty, black exhaust.
Loss of power
Over-temperature
5.2.3

Warnings

Generator must be shut off immediately if:
● Motor RPM suddenly rises or drops.
EN / W-SQ20 for mobile applications / April 2010
CAUSE
• Excessive heat in cooling system
(thermo-switch tripped).
• Lack of cooling water (exhaust switch
tripped).
• Impeller broken.
• Cooling water blocked.
• Air or water in the fuel.
• Blocked air or fuel filter.
• Loss of compression by wear out or
damage.
• V-belt broken or loose.
• Thermostat faulty
• Generator is being overloaded. Digital
Diesel Control will indicate "HIGH
CURRENT".
• Insufficient intake air.
• Choked air cleaner element.
• Fuel injector faulty.
• Valve clearance incorrect.
• Poor fuel quality.
• Poor quality lubricating oil.
• Continuous running with very low load.
● Wrong measurement. Check if the load is measured correctly. Does the Amp meter show
the correct value? When calculating the load by multiplying voltage and amps this should be
done by using the exact values, taking into account the power factor of the consumers. When
any doubt, measure the power directly with an appropriate instrument.
• Overfull oil sump.
• Choked fuel filter.
• Choked air cleaner element.
• Exhaust blocked.
• Faulty fuel pump
• Injector blocked.
• Loss of compression, sticking or
damaged piston ring.
• Wear out of cylinder.
• Overload.
• Low level of coolant or air in the
cooling system
• Radiator choked by dirt
• Hot air circulation in radiator.
• Broken or slipping V-belt.
• Faulty thermostat
SOLUTION
Check cooling liquid level in expansion tank;
check coolant flow, coolant pump,.
Check if radiator fans work properly and switch to
higher speed. Air piping system might block
circulation. Almost all problems of overheating are
caused by faulty installation: bents in the routing
of cooling pipes that capture air bubbles (air
locks) or hot air circulating bacj into the radiators.
Refer to installation manual.
Check and clean
Repair by Whisper Power service.
Readjust or replace V-belt
Check thermostat and replace
Check electrical load and switch off some
consumers
Check intake air paths and filter, clean and
replace if necessary.
Replace injector.
Readjust valve clearance
Use better quality diesel.
Use better quality oil.
Increase load up to 70% of nominal power and
have the engine run for a few hours
Bring the oil to the correct level
Replace the fuel filter.
Check air inlet openings; clean air cleaner
element..
Check the exhaust system.
Check and replace if nescessary
Have the injector checked.
Have the compression measured.
Clean or replace the rings.
Have the compression measured and have the
engine overhauled.
Take away the overload.
Fill up with coolant and release air bubbles.
Check if there are air blocks in the system; refer
to the installation manual
Check the cooling system thoroughly.
Clean radiator
Replace and adjust the V-belt tension.
Check the thermostat or replace.
● Unusual noise comes from generating set.
● Exhaust gases suddenly colour dark.
● Engine failure warning light is on
TROUBLE SHOOTING
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