Quote:
Originally Posted by Dale
Our pressure switch is currently cutting off at 110lbs so we wanted to reset it to 120lbs. I thought we could just adjust the Allen screw on the side but it doesn't seem to have any effect. Is there something we're missing or are these permanently set at the factory and perhaps our gauge is at fault? Is there some pressuring sequence involved in setting them?
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Pressure switches are typically set at the factory and cannot be set to a different value. Most of them are a diaphram, spring, and plunger setup.
Most likely you have loosened something on the switch and made it illegal for FIRST.