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Old 12-30-2013
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Whale in line pump trouble

Hi all, i'm new to forum. Thanks for having me.

I have an odd problem with my whale in-line pump i can't diagnose or find an answer here for:

I use a 12 volt inline pump as my main galley pump, I know they're intended to be supplemental to a larger pump, but my boat came with this set up and it worked fine until recently.

Now, though, when i press the foot pedal, it functions fine for about five seconds, and then the water flow stops and the pump seems to be running dry. If i wait another 15 seconds or so, it runs again, but only for another five seconds, and so on and so on.

I checked the intake hose, and the water runs strongly out (it's below the tank level), so there doesn't seem to be any blockages. When it runs for the 5 seconds, the water comes out clean and full strength, then stops instantly. It doesn't trickle out or anything.

It's possibly notable that it did start doing this after a cold snap in which temps got down to about 20 at night. However i never operated the pump until the temperature warmed back up a few days later.

Any ideas?

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Old 12-31-2013
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Re: Whale in line pump trouble

Pull the pump out & bench test, looking for pump leak, good chance you have a hair line crack that opens when the pressure builds. May also be in the faucet fitting.
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Old 12-31-2013
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Re: Whale in line pump trouble

Also check the air valve. It should run from somewhere on top of your tank to a deck vent. If clogged, it will stop flow.
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Old 12-31-2013
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Re: Whale in line pump trouble

Is this an automatic pump with a integral pressure switch?

If so, I'm wondering if you have some ice still in the line past the pump to the facet?
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Last edited by Delta-T; 12-31-2013 at 08:51 PM.
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Old 01-01-2014
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Re: Whale in line pump trouble

If this is the double action foot operated diaphragm Whale galley pump, you probably have a ruptured diaphragm. No biggie, they should be available at most chandlers. If it's not, post a pic.
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.
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