Water Pump doesn’t turn off

senorquill · May 12, 2021, 02:05:20 PM

Gents,

When I turn the water pressure on my water pump, attached photo, doesn't turn off. This just recently happened. I have inspected any for a leak and I don't see one. Once it has pressure the pressure will remain over night. I have filled the water tanks once and that stopped it. But after a little use it just keeps going.

1. Is this a sign of the end of life for the pump? It's from 2013.
2. Has anyone opened the pump and fixed it or anything?
3. Could it be something else?

Ryan
S/V Dude
1987

Stu Jackson · May 12, 2021, 02:18:54 PM

Do you have both water tank valves open at the same time? If so, shut one and use only one tank at a time.

KWKloeber · May 12, 2021, 02:44:31 PM

Ryan there is a water pump troubleshooting guide on the wiki site. It can be from things such as a bad diaphragm or check valve. You shouldn't need a new pump just a kit or at worst a new head. What model number is it?

Ron Hill · May 12, 2021, 02:52:28 PM

Ryan : I don't know of anyone that has successfully taken that pump apart (BK) - other than looking for some junk that got thru your fresh water strainer.

With FlowJet I called them and they said if the motor runs they would trade me for a complete new pump - which they did!! Give Shureflow a call and see what they say.

A few thoughts

Stu Jackson · May 12, 2021, 08:23:35 PM

Before you call anyone, could you answer my question and have you read what Ken suggests?

senorquill · May 13, 2021, 05:22:48 AM

Quote from: Stu Jackson on May 12, 2021, 02:18:54 PM
Do you have both water tank valves open at the same time? If so, shut one and use only one tank at a time.

I only have one tank value open at a time. I've closed both and it keeps running. I've opened both and it keeps running.

senorquill · May 13, 2021, 05:23:23 AM

Quote from: Ron Hill on May 12, 2021, 02:52:28 PM
Ryan : I don't know of anyone that has successfully taken that pump apart - other than looking for some junk that got thru your strainer.

With FlowJet I called them and they said if the motor runs they would trade me for a complete new pump - which they did!! Give Shureflow a call and see what they say.

A few thoughts

I'll give them a call. Thanks

frankya · May 13, 2021, 07:36:30 AM

A clogged/blocked inlet filter or screen will do the same thing.

Jim Lucas · May 13, 2021, 08:57:33 AM

I'd almost guarantee that it's the filter/screen being blocked up as frankya said. turn off the pump and you can pull it fairly easily. If you don't have a replacement, use a water hose and blow backwards through it to clean it out and replace.
If it's clogged, you may find you have to do this a few times as you may have some sludge in your water tanks/lines.

KWKloeber · May 13, 2021, 09:07:14 AM

Quote from: Ron Hill on May 12, 2021, 02:52:28 PM

I don't know of anyone that has successfully taken that pump apart - other than looking for some junk that got thru your strainer.

Jeeez. Ron, meet Ken. Ken, meet Ron.
Same ShurFlo on the boat for 20+ years. Replaced the switch once and a kit once (I think, maybe twice.)

Stu Jackson · May 13, 2021, 10:48:03 AM

Quote from: senorquill on May 13, 2021, 05:22:48 AM
Quote from: Stu Jackson on May 12, 2021, 02:18:54 PM
Do you have both water tank valves open at the same time? If so, shut one and use only one tank at a time.

I only have one tank value open at a time. I've closed both and it keeps running. I've opened both and it keeps running.

Thx for the answer. Then it's time to use the troubleshooting guide Ken suggested. A friend with the same pump recently spent some time on the phone with Shurflo, and all they did was lead him to take off the inlet connection and find a piece of crud in there, just like the guide says to do. Good luck.

KWKloeber · May 13, 2021, 11:52:11 AM

Ryan
I see you don't have a ShurFlo inlet screen installed. That's the kindest thing I ever did to my pump.
Mine is an older straight-thru type screen, not the current bowl-type strainer. Google it.
You might also switch to the thumbscrew type inlet/outlet elbows - they make it so convenient to service, winterize, etc., if you need to remove hoses.

Ron Hill · May 13, 2021, 02:40:47 PM

Ken, meet Ron!! : I'm talking about taking the pump (itself) apart, not just the pump off the motor Daaaa!

Ryan : If you can get a new "pump" from Shurflow I believe that will fix your problem. But you still have to call them!

A few thoughts thought

KWKloeber · May 13, 2021, 02:48:48 PM

Quote from: Ron Hill on May 13, 2021, 02:40:47 PM
Ken, meet Ron!! : I'm talking about taking the pump (itself) apart, not just the pump off the motor Daaaa!

Ryan : If you can get a new "pump" from Shurflow I believe that will fix your problem. But you still have to call them!.

A few thoughts thought

Dah - How does one replace the diaphragm and check valve and what not else is in the kit without taking the pump apart?
I don't know of any way to do that task.

Osmosis maybe?
Or thread it through the inlet or outlet ports?

Ron Hill · May 13, 2021, 02:56:36 PM

Guys : I wrote an article for the Mainsheet tech notes - where I recommended that C34 owners get a finer mesh screen for the fresh water filter bowel. What came with the boat was a course mesh #20 and that same screen for the course raw water filter. You have "Hypro 3/4" 3350 inline strainers" (for raw and fresh water). The finer screens are #50 or #80.

You've already have a bowel filter that's plumbed into the fresh water system, just get a finer mesh to put in that same bowel!!

A thought