Question about Karcher 2500 PSI Pressure Washer

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I have an SDMO generating set with a Mitsubishi S3 L2SD engine it is supposed to run at 1500 rpm but goes up and down depending on load, if I set the rpm at no load to 1500 as soon as a load is applied the revs drop and so do the cycles from 50 to perhaps 48, if I set the revs on load, then off load the revs go up and the cycles hit 53 plus which means for example my washing machine does not want to know, I suspect the govenor on the pump but do not want to change the pump if this is within parameters for this engine, regards Rick

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Set the no load revs such that you get 51 Hz out of the generator, at 80% load this ought to give you something like 48.5 Hz with less than a 3% drop in output voltage. If not, you might have governor problems but I'd try servicing and adjusting it before replacing anything other than filters.

Cheers,
Carl

Posted on Dec 07, 2008

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