Question about Pramac GBW30P Encl Diesel Genset w/Perkins Eng

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Perkins 3 cylinder powered pramac generator

I have a 15-20kva perkins 3 cylinder powered pramac generator, it wont fire, i pulled the the fuel solenoid out it fired straight away, i have voltage to the solenoid and when i connect the fuel solenoid up it opens in as it should, any ideas?

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Start looking at your safety circuits.

1. High water temp
2. Low Oil
3. Low water etc...

From the manual these are the protection circuits.

• Engine protection: low oil pressure, high engine temperature.
• Genset protection: under/over voltage, overload, battery charger failure, battery voltage out of limits,
under/over frequency, start failure.
• Circuit breaker protection: IV poles.
• Differential protection.


Any one of them will trip the fuel relay closed. What you may be able to do is disconnect one at a time each protection circuit and see when the fuel relay opens. (Make sure to reconnect each one if it had no effect on the fuel solenoid)

Once you isolate which circuit it is in then you can chase wires or change the bad switch.

Thanks for choosing FixYa.

Kelly

Posted on Jun 26, 2010

  • Kelly
    Kelly Jun 26, 2010

    I do have one thought.... are you sure the fuel solenoid is really opening? i.e is it energizing but not opening? A weak coil or a safety circuit controlled ground will do this.



    Just a note on the safety circuits... they will control either power or ground so it is quite possible that your safety circuit is controlling the ground so you would see voltage at the solenoid with a meter but it still would not open. You can try grounding the the ground side of the fuel solenoid with a jumper and see if that allows you to start the engine. If it starts.... you still have a problem in one of the safety circuits.



    Kelly

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