Question about Electrical Supplies
Motor running but no power being produced, is there a relay switch I can't see?
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Posted on Jan 02, 2017
The problem is that the printed circuit board inside the generator draws a little current from the battery even when the generator is not running. Over the course of a few days this can make the battery weak enough to be unable to get recharged by the built in running charger which results in not enough power to run the electronic governor on the generator. Usually the spark plugs will work even with a fairly low battery.
Most of the Generac generators come with a built in trickle charger that runs off of the transfer switch load terminals. If your built in charger isn't doing the job it's either broken or you have the wrong sort of battery installed in the generator.
Posted on Jan 26, 2009
Remove front cover on the genset and you will see the brushes and rings. Clean the rings if black with emory cloth and inspect brushes. Flash the fields by apply a 12V battery to the brushes. the brush closest to you or the bearing is connected to the positive side of battery and the back brush is negative. You have to do this with genset running. You should notice your voltage climb up to over 50Vac maybe even over 100Vac. Make sure to use rubber gloves when flashing fields and keep hands away from rotating parts. if voltage does increase when flashing the the voltage regulator is shot. If voltage does not climb then you will need a new genset or generator end.
Posted on May 15, 2009
Pull the no 1 and no 4 wires off the voltage regulator and apply 12 vdc from the battery to them + to no 4 - to no 1. start unit and see if its putting out at least 60 VAC. If it is then you have a bad voltage regulator. If itis not then you have to investigate the brushes, stator, and rotor.
Posted on Nov 18, 2009
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