Question about Air Tools & Compressors
Bought a used electric Campbell Hausfeld air compressor, 1.5 HP 11 gal "Super Pal" model LT500800, used very little recent years. Will start from 0 psi and go to 90 psi auto shutoff, but sometimes only to 80 psi and then stalls (hums). Tries to restart (hums) at kick on pressure, but won't run unless psi is about 15. Same results in two different garages.
This sounds like a bad pressure switch.if the unit is not shutting off at the same pressure each time this would be the cause.2 if the pressure is not unloading the air pressure on the compressor side of the unit it will cause the unit to struggle when it starts a cycle because the piston is under a load .how this works is say the unit starts from 0 psi when it get to the desired pressure you have it set on the unit kicks off . the other adjustment most units have on them is what pressure to cycle back on.so when the unit reaches say 100 pounds ,it kicks off and bleeds the air off the compressor side so when it starts back up it wont start up with pressure on the piston.
Posted on Jun 22, 2009
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Posted on Jan 02, 2017
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