Flo-jet pump rpoblem

Submitted: Wednesday, Apr 18, 2007 at 09:48
ThreadID: 44442 Views:1834 Replies:8 FollowUps:0
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Haven't had a chance to query the dealer (it's still under warranty) but our 12V Flo-jet misbehaved over Easter. I can't find the manual to see if it suggests anything and can't find a copy online either so I thought I ask you lot, who know everything ;)

The Mrs went to get some water from the sink faucet and the pump ran for a few seconds with water and air coming out. She turned the tap off and it kept running for another few seconds and wouldn't work again. I crawled under to see if there was some reset button (hard to see due to protective shield) and looked in cupboards for fuses (which were ok) but it wouldn't go again. Once home and parked in shed I tried it again and it did the exact same thing, which at least proved it still could run.

I'm wondering if the air and water mix coming out indicates a air-leak somewhere that causes it to shut down? Any ideas?

Cheers, Nige
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Reply By: Gerhardp1 - Wednesday, Apr 18, 2007 at 10:07

Wednesday, Apr 18, 2007 at 10:07
Water and air coming out suggests you might have run out of water. If so, it won't work again until you refill the tank.
AnswerID: 234177

Reply By: Turist - Wednesday, Apr 18, 2007 at 10:51

Wednesday, Apr 18, 2007 at 10:51
Sounds like you have a leak in the inlet side of the pump to be sucking air. Wondering if the pump can run for long without being bu**ered.

An empty water tank sounds like a good place to start.
AnswerID: 234184

Reply By: HGMonaro - Wednesday, Apr 18, 2007 at 11:25

Wednesday, Apr 18, 2007 at 11:25
thanks for replies.

tank definitely not empty.. I filled a couple of buckets from the drain plug, so an air leak might be it! will investigate!

Although I can take it back (the camper) I'd like to have a bit of a go sorting it myself incase I have to do it when we're away in the boonies! Doesn't hurt to learn abouit it I figure. If it's stuffed however, it will be going back! The info I did find on the pumps indicates some models (don't know which model ours is) can run dry with no ill-effects... bet mine isn't one of those ones!
AnswerID: 234189

Reply By: Russ n Sue - Wednesday, Apr 18, 2007 at 12:08

Wednesday, Apr 18, 2007 at 12:08
These pumps are particularly sensitive to dust and grit. You may have hole in one of the diaphrams caused by same. It was difficult to work out from your post - does the pump stop running or does the pump stop pumping? These are two different things with different possibilities for causes.

If it doesn't run start checking power sources, pressure switch connections etc. If it stops pumping check for leaks on the intake side and holes in diaphrams.
AnswerID: 234197

Reply By: HGMonaro - Wednesday, Apr 18, 2007 at 15:19

Wednesday, Apr 18, 2007 at 15:19
stops running (and thus pumping), but was pumping when running (which was only for a few seconds)
AnswerID: 234232

Reply By: HGMonaro - Friday, Apr 20, 2007 at 15:44

Friday, Apr 20, 2007 at 15:44
tried it again last night and it didn't go at all.

checked tank had water - yep
plugged mains in and ran tap - blew a fair amount of air and water until it ran clear
removed mains, opened tank filler to ensure no air-lock

pump wouldn't run...

removed protective cover to read model number and check power supply which was fine. Checked the model no on the net and it's a run-dry model, so it sounds like it's got BIG problems! Pity since it's only actually pumped about 10 litres tops!

Cheers, Nige

AnswerID: 234768

Reply By: Turist (The Original One) - Friday, Apr 20, 2007 at 16:04

Friday, Apr 20, 2007 at 16:04
Most Flo-Jet pumps have a built in bi-metal thermal protector.
Could be that it has stuck open.
Try a 4kg masons hammer. :-)

Or try this and download. a technical sheet.

Bob
AnswerID: 234773

Reply By: HGMonaro - Friday, Apr 20, 2007 at 22:21

Friday, Apr 20, 2007 at 22:21
will take it back before pulling it apart, thanks for suggestions
AnswerID: 234855

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