Voltage drop at the water pump when its ON. - Page 2 - SailNet Community
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post #11 of 22 Old 08-09-2019
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Re: Voltage drop at the water pump when its ON.

Can you move the bloody pump closer to the battery?
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post #12 of 22 Old 08-09-2019 Thread Starter
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Re: Voltage drop at the water pump when its ON.

Solved!!!!!!!!!!!!!!!!!!!!!!!

And the Prize for the Winning Advice goes to Degas!


Quote:
Originally Posted by Degas View Post


3. If there's still a voltage drop then repair/replace your pump. R1 and/or R2 are in your pump.


It was/is the bloody pump!

On the same circuit I have the exact same pump, Jabsco Par Max 2.9 that pumps the salt water into the sink.
Not only the same circuit but the wire splits from close to the other pump.

When the Salt Water pump is on the voltage drops from 13.9 to 13.6 so no real drop at all.

So I think the Fresh Water pump is the problem. I will keep it till it dies as I can change it quickly with the one doing the salt water.


Thanks for everyones help. No re-wiring! Yay!


Frank!
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post #13 of 22 Old 08-09-2019
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Re: Voltage drop at the water pump when its ON.

Congrats. Just goes to show how knowing how things work may make solutions easier. Now if I could just solve straddling my suspender strap in the WC.
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post #14 of 22 Old 08-09-2019
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Re: Voltage drop at the water pump when its ON.

Have you checked/cleaned the wiring from where it splits off from the other pump to the suspect pump? You may not need a new pump.
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Re: Voltage drop at the water pump when its ON.

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Originally Posted by Minnewaska View Post
Have you checked/cleaned the wiring from where it splits off from the other pump to the suspect pump? You may not need a new pump.

Yes, I bypassed that the first day. I will run the pump till it dies. It may never die. I will check to see if it overheats.



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post #16 of 22 Old 08-10-2019
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Re: Voltage drop at the water pump when its ON.

I would replace the pump now, because it could eventually fry your wires. And then you will be forced to rewire. These pumps are not too expensive and you need to to it eventually anyway.
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post #17 of 22 Old 08-10-2019
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Re: Voltage drop at the water pump when its ON.

Definitely replace the pump now. With that large of a voltage drop it is pulling way more amps than it should. When it dies it will probably melt that little wire powering it and you will have a much worse time running a new wire.
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post #18 of 22 Old 08-10-2019
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Re: Voltage drop at the water pump when its ON.

So time as has it's way with the conductors within the pump body ,,,now hanging on by a strand , what's the solution.?
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post #19 of 22 Old 08-10-2019
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Quote:
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So time as has it's way with the conductors within the pump body ,,,now hanging on by a strand , what's the solution.?
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Re: Voltage drop at the water pump when its ON.

Ist make sure its the pump.
If it is and you think it has failed prematurely, you have a great opportunity to ***** on net forums.
Good brand pumps usually are good for years, if well fed.
Id replace it when in a happly place....not dark and stormies....
You know its headed towards lock up. Maybe good to warm finger food before final lockdown.
Sounds like you are making things right.
Do this one too.
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Best luck
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