User manual M-SQ 8, 10 ENG

TROUBLE SHOOTING

PROBLEM CAUSE

Sooty, black exhaust.

Loss of power

Over-temperature

• Faulty thermostat

SOLUTION

• Thermostat faulty

• Generator is being overloaded. Digital

Diesel Control will indicate “

HIGH

Check thermostat and replace

Check electrical load and switch off some consumers

CURRENT

”.

• Insufficient intake air.

• Choked air filter.

• Fuel injector faulty.

• Valve clearance incorrect.

• Poor fuel quality.

Check intake air paths and filter, clean and replace if necessary.

Replace injector.

Readjust valve clearance

Use better quality diesel.

• Poor quality lubricating oil. Use better quality oil.

• Continuous running with very low load. Increase load and have the engine run for a few hours

● 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.

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.

• Loss of compression, sticking or damaged piston ring.

Have the compression measured.

Clean or replace the rings.

• Wear out of cylinder.

Have the compression measured and have the engine overhauled.

• Overload.

• Low level of cooling oil or air in the cooling system

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

• Water inlet system blocked.

• Broken impeller.

• Water strainer choked

• Heat exchanger choked.

• Broken or slipping V-belt.

Check the cooling system thoroughly.

Replace and adjust the V-belt tension.

Check the thermostat or replace.

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

If you cannot correct a problem with the aid of the malfunction table, contact your Whisper Power Service Centre or Whisper Power Netherlands, tel: INT+31-512-571550. www.whisperpower.eu.

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January 2010 / M-SQ8 & 10 / EN