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You can try adjusting the switch using the adjustment nuts on the spring shafts but you may wind up needing a new switch. To raise the cut in pressure first you have to increase the overall range by tightening the big nut. ~3 1/2 turns will take you up to 60 psi cut out and if the range stays the same it will increase your cut in to 30. Then back off the smaller nut 2 to 3 turns if you want to maintain the 30/50 range. Backing off the smaller nut lowers the cut out pressure. Tightening the big nut raises both cut in & cut out. Be sure to check the switch response after every adjustment.
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