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Old 08-10-2013, 04:41 PM   #1
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Strange Water Pump Issue

While diagnosing a quick battery drain issue, I checked the amp draw on each of the fuses. This is the strange part.

* pump switch off 0
* pump switch on .09 - I know, there is a light on the circuit
* pump switch on and water running - 4.25
* pump switch on water stopped and pump stopped, but switch on - 6.23

I repeated this process several times. Anyone have an idea what would cause this. No wonder my battery drained quickly.
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Old 08-10-2013, 04:58 PM   #2
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I don't understand what you are saying. Other than the current draw, what is the difference between state 2 and state 4? It sounds like both cases are with the switch on and no water being pumped.

Joel
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Old 08-10-2013, 05:09 PM   #3
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It is the order. Before pumping water the current is low. After pumping water while the water is not running the current is even higher than while the pump is running
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Old 08-10-2013, 05:53 PM   #4
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It sounds as if the pressure sensing switch at the pump head is not turning off power to the pump. That would cause it to continue to try to pump, even when all the taps were closed. It is inexpensive and easy to replace.

Joel
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Old 08-10-2013, 05:56 PM   #5
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Quote:
Originally Posted by Tedscastle View Post
It is the order. Before pumping water the current is low. After pumping water while the water is not running the current is even higher than while the pump is running
Looks to me like the pump is in a "stall". Reaches pressure and mechanically stopped. Pressure switch is not opening power to pump?
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Old 08-10-2013, 07:55 PM   #6
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It continues to work after using it, but drains ower
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Old 08-10-2013, 07:56 PM   #7
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Sorry, hit the button too soon.


It continues to work, but drains power even though pump is not working. 6 amps seems like a lot when the pump isn't pumping
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Old 08-10-2013, 08:15 PM   #8
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Originally Posted by Tedscastle View Post
Sorry, hit the button too soon.


It continues to work, but drains power even though pump is not working. 6 amps seems like a lot when the pump isn't pumping
Agreed, both Joel and I posted together the pump is reaching pressure but the power doesn't get cut off. Seems the pump is still powered but stops due to mechanical forces (pressure). Easy fix, change out the pump. One way to confirm is to listen carefully to the pump, it should be moaning when stalled like that.
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Old 08-10-2013, 08:48 PM   #9
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This sounds like problem with my water pump. It seems to moan and groan just prior to shutoff. Replaced three 10a fuses which blew at the end of a moan and groan cycle. Lol. The filter on pump is clear and in and outlet pipes clear so uncertain if pump stalling from blockage or stalled due to faulty pressure switch. How expensive for new switch?
Currently in Algonquin park w/o access to RV center
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Old 08-10-2013, 09:22 PM   #10
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Originally Posted by rschoono289
This sounds like problem with my water pump. It seems to moan and groan just prior to shutoff. Replaced three 10a fuses which blew at the end of a moan and groan cycle. Lol. The filter on pump is clear and in and outlet pipes clear so uncertain if pump stalling from blockage or stalled due to faulty pressure switch. How expensive for new switch?
Currently in Algonquin park w/o access to RV center
Alot less than complete pump, if you can to match exactly.
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