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Old 06-09-2013
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Wizards, put on your hats...

I don't get it. It's all FM to me.

The water pressure pump quit working. I took it home to help myself order a new one. At home I connected it to my battery charger and it worked. Hmmmn. I checked the wiring on the boat with a multi-meter. At the pump location there is 12+ volts. I hook the pump back up - nothing? Take the pump back home - battery charger... works fine.

At this point I'm reluctant to order a new one until I figure this out.

Any ideas?
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Old 06-09-2013
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Re: Wizards, put on your hats...

When you try it on the boat is it ' plumbed in'? or just hooked up electrically? Long shot but wondering if the pressure switch is somehow satisfied aboard and not at home...
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Re: Wizards, put on your hats...

No is the short answer. I just quick-hooked up the wires with a wire nut. At home with the charger, I just clipped the charger clips to the pump wires.
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Old 06-09-2013
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Re: Wizards, put on your hats...

OK, following my mental fault isolation tree it looks like the next thing to check would be your float switch.
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Old 06-09-2013
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Re: Wizards, put on your hats...

Quote:
Originally Posted by joehixon View Post
No is the short answer. I just quick-hooked up the wires with a wire nut. At home with the charger, I just clipped the charger clips to the pump wires.
I'm sure someone will come up with a better answer. But, if it was me, the next thing I would try is a jumper directly to my starter battery and see if that works.
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Re: Wizards, put on your hats...

Quote:
Originally Posted by PorFin View Post
OK, following my mental fault isolation tree it looks like the next thing to check would be your float switch.
Porf, it's his press water pump, not the bilge pump..

Another long shot, presumably, but quality connection in the boat? Polarity correct?
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Re: Wizards, put on your hats...

I did not check the polarity. I'll try that next.
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Re: Wizards, put on your hats...

Most run both ways.Sometimes you can get 12v but few amps.Bad connections,switch or fuse.marc
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Re: Wizards, put on your hats...

pressure pump for potable water? I wonder if you have enough amps to drive it on the boat?
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Re: Wizards, put on your hats...

The batteries start my Perkin 4108, it should drive a 5 amp pump.

The problem occurred at the same time the feed hose from the tank let loose. Spouse was filling the tank with a hose and it may have over pressured.

Possible factors?:
Pressure in the pump from the tank hose
water on the pump and connections

But still, it works on a 12v 6amp battery charger. It has to be in the wiring. I will hook it up directly to the battery and see what happens.
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