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Old 06-22-2007, 07:22 AM   #1
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1974 25' Tradewind
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Still can't pressurize my water system

I have tried every combination of valve openings or closings and I still cannot pressurize my fresh water system with the pump. It (the pump) will not stop running even whe the city water is connected and all the lines are pressurized that way. The water works fine that way, but I would like to be sure I could use the pump if there was no city water available. Could this possibly be a bad pump? Any suggestions for a replacement?
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Old 06-22-2007, 09:32 AM   #2
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The pump must draw from the fresh water tank.
If it has lost it's prime, it won't be drawing anything to be able to pressure up the system with.
Has your pump lost it's prime?
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Old 06-22-2007, 09:37 AM   #3
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Some more details would help. What year and model is you trailer? Those can be put in you profile.

Is there any water in your tank? Is the filter clean? With the pump on is ther water coming out from under your trailer?
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Old 06-22-2007, 10:39 AM   #4
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Yup, I lost MY prime some years back!

Yes, the year and model of your trailer would be helpful.
But to me, it sounds like a bad pump!

Michael

Quote:
Originally Posted by chuman70
I have tried every combination of valve openings or closings and I still cannot pressurize my fresh water system with the pump. It (the pump) will not stop running even whe the city water is connected and all the lines are pressurized that way. The water works fine that way, but I would like to be sure I could use the pump if there was no city water available. Could this possibly be a bad pump? Any suggestions for a replacement?
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Old 06-22-2007, 11:14 AM   #5
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Early trailers used an air pressurized system and the pump was actually a compressor that feed the fresh water holding tank. Those compressors worked off only 12 volt. The first thing to do with air or water pump system is to see that you are getting 12 volt to the pump. After that check that the pressure switch is working and allowing the voltage to get to the motor. If the motor runs but the pump or compressor do not put out, you have a bad pump/compressor.
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Old 06-22-2007, 01:06 PM   #6
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Does it do this when not connected to city water? It's possible your pump is trying to bring the entire city's water system up to its own cut-off pressure.
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Old 06-28-2007, 05:57 PM   #7
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Quote:
Originally Posted by chuman70
I have tried every combination of valve openings or closings and I still cannot pressurize my fresh water system with the pump. It (the pump) will not stop running even whe the city water is connected and all the lines are pressurized that way. The water works fine that way, but I would like to be sure I could use the pump if there was no city water available. Could this possibly be a bad pump? Any suggestions for a replacement?
The valves or vanes in your water pump are bad.

What make and model pump do you have?

Andy
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