Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 31-01-2012, 15:09   #1
Registered User

Join Date: Dec 2009
Posts: 33
Fresh Water Pump Won't Quit

I have a Sureflo 3gpm water pump that constantly runs.Good pressure,no visable leaks,no abnormal bilge cycles,and inspected hot water heater.Pump is only 3 years old.Thoughts? Come back,over!
__________________

__________________
jwalk is offline   Reply With Quote
Old 31-01-2012, 15:21   #2
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,815
Re: fresh water pump wont quit

Sounds like the pump pressure switch is stuck on run. I assume you get plenty of water out the faucet. A slipping impeller or closed water tank valve would also cause the pump to continue to run.
__________________

__________________
sailorchic34 is offline   Reply With Quote
Old 31-01-2012, 15:21   #3
Registered User

Join Date: Nov 2009
Location: Sailing from NC
Boat: 1999 IP40, Charbonneau
Posts: 82
Re: fresh water pump wont quit

Hello JWalk...if you have good pressure and see no leaks, the only remaining variable is the pressure switch. I recently installed a Sureflo...think it may have been a 4 gal model, but somewhere it must have a pressure switch to stop the pump when desired pressure is achieved. I think my unit is set to 40 psi. Not sure if it's user servicable.

Bill
__________________
bchaps is offline   Reply With Quote
Old 31-01-2012, 15:25   #4
Registered User
 
Dreaming Yachtsman's Avatar

Join Date: Nov 2005
Location: Kennewick, WA
Posts: 490
Images: 5
Send a message via Skype™ to Dreaming Yachtsman
Re: fresh water pump wont quit

I had a similar problem with a Johnson fresh water pump when plastic shavings from a watermaker installation worked their way into the pump and caused the discharge check valves to leak. The pump cycled on every 5 minutes until I was able to change it out. I finally obtained a strainer for the pump suction and solved that problem for good.
__________________
John
Formerly S/V Yachtsman's Dream
Go sailing now. Life is too short not to enjoy it.
Dreaming Yachtsman is offline   Reply With Quote
Old 01-02-2012, 12:33   #5
Marine Service Provider
 
peghall's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Feb 2011
Posts: 1,533
Re: fresh water pump wont quit

Or, if the pump is a diaphragm pump (which most Shurflo--older ones anway--are), failed diaphragm.

That starts with short BRRPs a few times a day--almost unnoticeable unless you're really paying attention. But the BRRRRRPs gradually last a little longer and happen more and more frequently...till finally the pump runs continuously without moving any water through it.

However, if you have plenty of water, this prob'ly isn't your problem.
__________________
2017 Peggie Hall
Specializing in marine sanitation since 1987
Author "The NEW Get Rid of Boat Odors"
https://www.amazon.com/New-Get-Rid-B...dp/1892399784/
peghall is offline   Reply With Quote
Old 01-02-2012, 12:37   #6
Registered User
 
speakeasy's Avatar

Join Date: Jul 2009
Location: La Paz
Boat: 41' Custom CC Cutter
Posts: 647
Re: Fresh Water Pump Won't Quit

speaking of leaks, is the plug that fits into the dock hose inlet, in and tight?
__________________
"The nature of the universe is such that ends can never justify the means. On the contrary, the means always determine the end." ---Aldous Huxley
speakeasy is offline   Reply With Quote
Old 01-02-2012, 12:48   #7
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 12,383
Re: Fresh Water Pump Won't Quit

Quote:
Originally Posted by speakeasy View Post
speaking of leaks, is the plug that fits into the dock hose inlet, in and tight?
Are you referring to the deck fill cap on the boat where you fill the water tank? Don't see how that would relate to the pump problem.
__________________
The water is always bluer on the other side of the ocean.
skipmac is offline   Reply With Quote
Old 01-02-2012, 13:00   #8
Registered User
 
speakeasy's Avatar

Join Date: Jul 2009
Location: La Paz
Boat: 41' Custom CC Cutter
Posts: 647
Re: Fresh Water Pump Won't Quit

skipmac, no, I'm referring to the hose connection from a dock hose, that lets one use water directly from the dock hose on the boat. The pump is turned off in that instance, and when one disconnects from the dock hose, there is a cap that goes on the hose inlet, that allows pressurizing the system. Leave off the cap and water will spill onto the deck when the fresh water pump is turned on. I've left the cap off getting ready to cast off and pumped some gallons into the scuppers. Probably not the issue here, but it's the simple stuff that often gets overlooked, at least by me.
__________________
"The nature of the universe is such that ends can never justify the means. On the contrary, the means always determine the end." ---Aldous Huxley
speakeasy is offline   Reply With Quote
Old 01-02-2012, 13:31   #9
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29 49.16 N 82 25.82 W
Boat: Pearson 422
Posts: 12,383
Re: Fresh Water Pump Won't Quit

Quote:
Originally Posted by speakeasy View Post
skipmac, no, I'm referring to the hose connection from a dock hose, that lets one use water directly from the dock hose on the boat. The pump is turned off in that instance, and when one disconnects from the dock hose, there is a cap that goes on the hose inlet, that allows pressurizing the system. Leave off the cap and water will spill onto the deck when the fresh water pump is turned on. I've left the cap off getting ready to cast off and pumped some gallons into the scuppers. Probably not the issue here, but it's the simple stuff that often gets overlooked, at least by me.
OK, now makes sense. Am familiar with that type of system but see more cruising sailboats without that with that feature.

One reason I think it is not common, there are stories (urban legends?) about hoses coming loose, filling the boat with city water until the bilge pumps burn out or the batteries die and sinking at the dock. Plus if you leave the cap off your pressure water pump won't work.
__________________
The water is always bluer on the other side of the ocean.
skipmac is offline   Reply With Quote
Old 01-02-2012, 16:30   #10
Registered User
 
speakeasy's Avatar

Join Date: Jul 2009
Location: La Paz
Boat: 41' Custom CC Cutter
Posts: 647
Re: Fresh Water Pump Won't Quit

Yes, a broken hose could end in disaster. I try to remember to turn off the faucet when I leave the boat.
__________________
"The nature of the universe is such that ends can never justify the means. On the contrary, the means always determine the end." ---Aldous Huxley
speakeasy is offline   Reply With Quote
Old 01-02-2012, 17:06   #11
Registered User
 
capn_billl's Avatar

Join Date: Aug 2010
Location: Houston,Tx
Boat: Maxum 37'
Posts: 1,587
Re: Fresh Water Pump Won't Quit

There have to have been boats sunk that way, most "urban legends" started somehow.
__________________
capn_billl is offline   Reply With Quote
Old 01-02-2012, 18:54   #12
Marine Service Provider

Join Date: Oct 2007
Boat: Endeavour 42CC
Posts: 1,182
Re: Fresh Water Pump Won't Quit

you might have an air leak on the intake side of the pump. This would be a leak too small for water to drip out of, but large enough for air to get sucked into. I had a snap on fitting that did this. Looked for the problem for a year. No dripping water from this leak, only air drawn in causing the pump to kick on
__________________
gettinthere is offline   Reply With Quote
Old 02-02-2012, 08:21   #13
Registered User

Join Date: Dec 2009
Posts: 33
Re: Fresh Water Pump Won't Quit

Tks for all the great imput-checking them out now
__________________
jwalk is offline   Reply With Quote
Old 09-02-2012, 07:45   #14
Registered User

Join Date: Dec 2009
Posts: 33
Re: Fresh Water Pump Won't Quit

Ok,turned pressure valve screw counterclockwise and pump continued to run with good pressure at all outlets.Other thoughts?
__________________
jwalk is offline   Reply With Quote
Old 09-02-2012, 07:53   #15
Marine Service Provider
 
peghall's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Feb 2011
Posts: 1,533
Re: Fresh Water Pump Won't Quit

I guess calling Shuflo is out of the question?
__________________
2017 Peggie Hall
Specializing in marine sanitation since 1987
Author "The NEW Get Rid of Boat Odors"
https://www.amazon.com/New-Get-Rid-B...dp/1892399784/
peghall is offline   Reply With Quote
Reply

Tags
water

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Raw Water Pump vs Fresh Water Pump Cheechako Engines and Propulsion Systems 44 01-02-2012 15:31
Using a Plunger on Vacuflush Bob51 Plumbing Systems and Fixtures 18 20-01-2012 21:20
Airconditioning Raw Water Pump Relay Box Capt. Rich Plumbing Systems and Fixtures 3 06-01-2012 09:14
Cruisers: Pressurized Fresh Water ? Beersmith Plumbing Systems and Fixtures 80 22-11-2011 02:46
Refilling Water Tanks ironhorserider2 Plumbing Systems and Fixtures 19 29-09-2011 07:01



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:51.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.