Posted by farmer boy on December 06, 2016 at 20:04:30 from (199.33.94.48):
In Reply to: 7130 magnum posted by sri on December 05, 2016 at 19:52:28:
All specs were good when it was checked out? Make sure that low pressure stand-by is where it should be. Make sure it's within spec. Too low and it can cause the oddest issues, too high and the pump won't de-stroke fast enough. If low pressure stand-by pressure is good, hook a pressure gauge to the appropriate remote and see what it does. You can turn the pressure up on the pressure compensator. Max pressure at the remote should be something like 75-100 less than max system pressure. The compensator is on the back of the pump, and both the low pressure stand-by and max system pressure are adjusted there. The max system pressure adjustment is normally wired in place from the factory. The low pressure stand is not. The max system pressure adjustment screw is very sensitive. At least it is on a Maxxum. Like 100 psi more pressure with a 1/8 turn.
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