[Shop-talk] air compressor question

Karl Vacek kvacek at ameritech.net
Wed Oct 7 18:23:18 MDT 2009


>> > Which is exactly why I didn't mention that you can probably
>> turn up the
>> > pressure switch a bit in your existing compressor.
>>
>> Really?  How do those adjust?


You'll likely find 2 adjustments, each associated with a compression spring 
(probably a screw through the center of the spring).  One adjusts the 
cut-out pressure (the thicker/stronger spring) while the other adjusts the 
differential between cut-in and cut-out pressures (ie the number of PSI drop 
from the cut-out pressure before the unit turns on again).

Tightening the cut-out spring raises the cut-out pressure, and tightening 
the differential spring increases the differential between cut-out and 
cut-in pressure.

Karl 


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