I have this cruisair heat pump which runs off 120vac.
It is cooled by raw water flow. If the water flow quits, the head pressure of the compressor will head over 400 psi, and click off the safety switch shutting off the compressor.
But the safety pressure switch will as the head pressure drops back down automatically reset, then of course with no cooling flow the compressor will again overheat and pump up the pressure past 400 psi and shut down. It will do this forever until somthing might break.
Now it is on a dedicated GFCI-AFCI 20 amp breaker. I noticed I accidently touched the incoming hot wire to ground with my hand and the GFCI instantly tripped it off. I was thinking that would be a good way to shut off the power to the unit, if a circuit could create a ground fault when the water flow stops, and the head pressure zooms over 400 and trips off the switch, have it also switch a relay? to create a momentary ground fault killing the incoming AC power.
Any ideas on how this could be easily done, or some other way?
The safety pressure switch has 2 terminal, so its just on or off.
The safety pressure switch is to the right of the start relay in the second picture.
It is cooled by raw water flow. If the water flow quits, the head pressure of the compressor will head over 400 psi, and click off the safety switch shutting off the compressor.
But the safety pressure switch will as the head pressure drops back down automatically reset, then of course with no cooling flow the compressor will again overheat and pump up the pressure past 400 psi and shut down. It will do this forever until somthing might break.
Now it is on a dedicated GFCI-AFCI 20 amp breaker. I noticed I accidently touched the incoming hot wire to ground with my hand and the GFCI instantly tripped it off. I was thinking that would be a good way to shut off the power to the unit, if a circuit could create a ground fault when the water flow stops, and the head pressure zooms over 400 and trips off the switch, have it also switch a relay? to create a momentary ground fault killing the incoming AC power.
Any ideas on how this could be easily done, or some other way?
The safety pressure switch has 2 terminal, so its just on or off.
The safety pressure switch is to the right of the start relay in the second picture.
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