Warnings; Service Address - Mastervolt WISPER 8ULTRA 1500 RPM 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.
● Unusual noise comes from generating set.
● Exhaust gases suddenly colour dark.
● Engine failure warning light is on
EN / WHISPER 8 & 10 ULTRA / December 2009 / Copyright © 2009 Mastervolt
Possible cause
• V-belt broken or loose.
• Thermostat faulty
• Generator is being overloaded. Digital
Diesel Control will indicate "
".
CURRENT
• Insufficient intake air.
• Choked air filter.
• 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 filter.
• Exhaust blocked.
• Injector blocked.
• Loss of compression, sticking or
damaged piston ring.
• Wear out of cylinder.
• Overload.
• Low level of cooling oil or air in the
cooling system
• Water inlet system blocked.
• Broken impeller.
• Water strainer choked
• Heat exchanger choked.
• Broken or slipping V-belt.
• Faulty thermostat
What to do?
Readjust or replace V-belt
Check thermostat and replace
Check electrical load and switch off some
consumers
HIGH
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 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 filter.
Check the exhaust system.
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 liquid and release air bubbles. Check
if there are air blocks in the system; refer to the
installation manual
Check the cooling system thoroughly.
Replace and adjust the V-belt tension.
Check the thermostat or replace.
5.2.4

Service address

If you cannot correct a problem with the aid of the mal-
function table, contact your Mastervolt Service Centre or
Mastervolt Amsterdam for an extended service list, tel: INT
+31-20-3422100.
TROUBLE SHOOTING
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