You can adjust the cycling switch(low press sw) by turning the small screw. Just play w/it to obtain max performance, i.e. if you have great temps but comp is kicking in/out too much a small change in the setting may help a lot. It determines the press at which the comp kicks in/out. Engine At 1500 RPM, I usually turn fan off, watch low side guage, it will start dropping. When it is close to 25-30, you want comp to cycle off to prevent freeze up. Adjusting this is important in humid areas especially. Brian
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