Is this pressure switch adjustable?
Answer Hello Edison,
All pressure switches are adjustable, but you have to have a special machine which they use on the assembly line to properly calibrate them. Be aware that even the repair technicians are not ever supposed to adjust a pressure switch. Once the screw on the pressure switch has been turned, it should be discarded and replaced. If you notice, the adjustment screw has a spot of paint on it to prevent the normal vibration of the machine from changing the calibration. So, in short, no, the pressure switch is not adjustable.