gazzab79
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I have exactly the same problem! trhank god im not the only one!!
Changing compressor on P38
- Thread starter anorakmark
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I have exactly the same problem! trhank god im not the only one!!
- Posts
- 19,297
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- Buckinghamshire, UK. ('95 DT)
It seems to be fairly normal. Mine does too. Got a pressure gauge on my tank feed. Once it drops much below 135psi the compressor starts running again. RAVE says it should be 120psi. Tried new pressure switch. No difference. I've given up worrying about it!
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Been through this before. Compressor should start at 120 psi + or - 7 psi. Should stop at 140 psi + or - 7 psi. So could run with a 34 psi differential if it starts at the lower end of 113 psi and stops at the higher end of 147 psi. Or as little as a 6 psi differential if it starts at 127 psi and stops at 133 psi. Or any combination in between. So it is a bit hit and miss depending how good the pressure switch is.
gazzab79
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But if its running to much is it not gonna kill the compressor?
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If it's not making height changes and there are no leaks it should not need to run that often. If it has an high differential it runs longer from low to high. If it has a low differential it runs in short bursts. As broad as it's long really.
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