Section 5
-
Fault Finding Harrington Generators International
8kVA Diesel Generator 27 Part No: 498
-
141
8kVA Diesel Generator 27 Part No: 498
-
141
5.1 Engine Fails to Start
IMPORTANT:
If the following checks and investigations can be completed without the use of tools then
the User can safely undertake them. If tools are needed then
ONLY
trained technicians can undertake
the work safely. Wiring diagrams are contained in this manual to help with electrical fault finding.
*
Care should be taken while working on the fuel system particularly when fuel is under high pressure.
Symptom
Cause and Remedy
Starter motor did not attempt to turn
the engine over. No L.E.D’s on the
Control Module Fig 2 are lit.
Check the control fuse and MCB has not failed.
Flat battery or wrong polarity from battery.
Check that the battery is producing over 12V DC from the posi-
tive terminal relative to the chassis of the generator.
Check the connections to the control module.
Starter motor did not attempt to turn
the engine over. The Start Fail
L.E.D lights.
Check the Emergency Stop button has not been used.
The control module pulls in a slave relay to put 12V DC onto
the starter motor solenoid.
Check the control module is not faulty by swapping it. Check it
is attempting to pull in the slave relay.
Check the operation of the slave relay.
Check the connections to the starter motor.
Check the operation of the starter motor by making a tempo-
rary connection to its solenoid.
Starter motor did not attempt to turn
the engine over. Oil pressure fault
L.E.D is lit.
The
Low Fuel
sensor is also con-
nected to the Low Oil alarm but
should not interfere with its normal
operation.
The control module believes that oil pressure is present when
the engine is off.
Check the oil pressure switch has not gone faulty.
Check the control module has not gone faulty by swapping it.
Check the fuel level in the tank.
Engine turns over but will not start.
(the Start Fail L.E.D should light af-
ter 3 attempts to start)
No smoke seen from exhaust pipe.
Check that the fuel filter is not blocked or full of water.
Check there is a 12V DC supply to the fuel solenoid valve.
*Check fuel is getting past the fuel solenoid valve.
*Check fuel is flowing at high pressure out of the fuel pump
located next to the fuel solenoid.
Suspect the fuel system is air locked or there is contamination
blocking the fuel system or injector.
Engine turns over but will not start.
(The Start Fail L.E.D should light
after 3 attempts to start).
Smoke seen from exhaust pipe.
Suspect faulty fuel supply as above.
Suspect faulty fuel injector nozzle.
Suspect contaminated / unsuitable fuel.
Suspect starter motor is not turning engine over quickly
enough particularly if the temperature is too low.
Suspect serious fault with the engine.
Содержание KUMS080HAE1X004
Страница 38: ...498 103 Issue A Page 43 Section 11 Notes Other Harrington Generators International...
Страница 39: ......