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Not sure where this goes but I have a leaking pool heat pump
a customer I have had me come out and look at his pool heat pump
said it was "leaking"
its leaking water from a thermistor?
see pic
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If you see water coming out from the hole in the well, you have a crack in the well where the thermistor goes into. Is the well Stainless? and is that really grease?
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this is inside the heat pump that heats the pool and yes that's grease
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Leaking well, replace it.
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 Originally Posted by beenthere
Leaking well, replace it.
Could you elaborate please?
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The sensor is in a well. It just screws/threads into the PVC the water travels through. Just screw the well out and screw another one in. The grease is probably a heat sink compound for better heat transfer for the sensor.
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Okay. I'm sorry if this sounds dumb but I do not have much plumbing experience beyond water heaters. What is the "well"?
Are you referring to the pipe that the sensor is inserted in?
Or
The underground pipe?
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the well is the metal thing the sensor is inserted into.
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?
The sensor is inserted into 2in schedule 40 PVC pipe
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 Originally Posted by Cli-Max Indoor Air
?
The sensor is inserted into 2in schedule 40 PVC pipe
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The sensor is not that big. If you took a 2" pvc pipe and glued a 1" female threaded nipple to it, you could then install a smaller say 1/2" pipe ( plug at the end and threaded at the other ) into that female nipple. Does that make any sense ? Then you would insert the sensor into that 1/2" pipe or so called ( well )
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The thing with the "greaese" on it. Should just be a well with the sensor inserted into it.
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it looks as if someone drilled and tapped 2" pvc tee and inserted a well into those threads. Drain down system unscrew old well insert new or reuse old with teflon tape and pipe dope. Insert sensor with heat transfer. Fill back up
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The grease is just a packing inside the well, that is holding the thermal to the inside wall of the well. so as to get its best temperature reading as the water inside the pipe flows across the inside of the well. the grease is not actually inside the pipe where water is flowing, its just inside the well portion where the thermometer (temp sensing unit) is located.
sorry thats the best i can explain it, it was a topic we covered in our Automatic controls module.
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