Question about Generac Guardian Quietsource 25,000 Watt Liquid Cooled Standby Generator

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I hava a 20kw NG guardian gen. When it does its weekly 12 min. test run it most always runs rough and seems to be choaking itself to death.

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I have a 400kw unit that does the same thing, I found the regulator needed to be execersized. when the unit starts I shut the isolation valve ahead of the regulator and then when it almost shuts of the gen. i open the valve back up and then everything is ok, hopefully after awhile it will work right.

Posted on Jul 12, 2009


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Posted on Jan 02, 2017


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