Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 11-02-2006, 10:16   #1
Registered User

Join Date: Jan 2006
Location: portland oregon
Boat: 1972 37' irwin center cockpit
Posts: 26
fresh water pump

We ran out of fresh water, and when we refilled the tank,(we forgot to turn pump off) we were beset with air in the lines. Mostly the hot water lines. I figured there was air in the hot water tank and so we added water to tank and ran water through the sinks to clear air, but the air pockes always seem to come back eventually. Also we overfilled the water tank when this happened. Now we can't figure out how to get all the air out. Any ideas?
__________________

__________________
teamivey is offline   Reply With Quote
Old 11-02-2006, 11:09   #2
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,580
Images: 240
It can take a very long time to pump air out through the the entire plumbing sysem to the sink faucet.
This is why its a good idea to install a drain valve immediately downstream of the pump. Put a T in the line, with a valve on the un-used leg. Open the valve and pump till water runs air-free & solid.
Otherwise, just keep pumping.
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 11-02-2006, 11:10   #3
Senior Cruiser
 
Talbot's Avatar

Cruisers Forum Supporter

Join Date: Jun 2004
Location: Brighton, UK
Boat: Privilege 37
Posts: 3,579
Images: 32
my system flushes the air quite satisfactorily. If you have one that doesnt then it is certain that there is a very high point in the system somewhere. Identify it and put an air bleed there.
__________________
"Be wary of strong drink. It can make you shoot at tax collectors - and miss."
Robert A Heinlein
Talbot is offline   Reply With Quote
Old 11-02-2006, 11:25   #4
Senior Cruiser
 
Alan Wheeler's Avatar

Cruisers Forum Supporter

Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,038
Images: 102
You over filled the water tank??? Do you mean the hot water tank?? I wouldn't have thought that a problem anyway.
__________________
Wheels

For God so loved the world..........He didn't send a committee.
Alan Wheeler is offline   Reply With Quote
Old 11-02-2006, 11:30   #5
SG
Registered User
 
SG's Avatar

Join Date: Oct 2005
Location: Annapolis, MD (USA)
Boat: J/160 #12
Posts: 81
Images: 6
The rules of plumbing aren't very complicated

I assume that you have good pressure? I assume that the cold water is pumping fine? I assume that you don't have a problem with your pressure accumlator tank? I assume that you don't have leak in your plumbing lines?


Then, my guess is that you just need to allow the pump to do it's thing. I'd open the farthest valve/faucet in each branch of your system: first the cold, then the hot. You should just open the valves a bit. You want to allow the system to purge itself. After you have the farthest point, then I'l do the same with any intermiate locatons.

Do or did you get spurts or "burps" when you do this?

Is your pressure shut-off switch cycling?
SG is offline   Reply With Quote
Old 11-02-2006, 12:22   #6
Registered User

Join Date: May 2005
Location: Pennsylvania
Boat: Tayana 37, M-20/I-20 Scow
Posts: 250
Try 'bleeding' the hot water heater. Easy to do: just pull the lever on the 'safety valve' until all the air escapes.
__________________
Richhh is offline   Reply With Quote
Old 11-02-2006, 14:49   #7
Registered User

Join Date: Jul 2005
Posts: 55
Filter?

We have had the same problem. I have a filter on the pressure side of the pump. It has a air bleed on it. All we have to do is push the bleed valve for a few minutes and this takes care of the problem.

Roger
__________________
StoutWench
Brewer 42
StoutWench is offline   Reply With Quote
Old 11-02-2006, 20:37   #8
Registered User
 
NoTies's Avatar

Join Date: Nov 2005
Location: Vanuatu
Boat: Whiting 29' extended "Nightcap"
Posts: 1,378
Images: 2
A trick I have used successfully in the past is to unscrew a shower rose, put my thumb over the outlet and turn on both faucets. If the hot water system is running at a lower pressure than the cold (common on a lot of systems) this forces water back through the pipework. I can't explain where the air goes, it just seems to work.
__________________

__________________
Pete

Positively, socially deviant.
NoTies is offline   Reply With Quote
Reply

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
Nigel Caulder on Hoses GordMay Construction, Maintenance & Refit 19 30-06-2015 13:14
Yanmar Tips GordMay Engines and Propulsion Systems 18 29-07-2012 06:04
Fresh water tank treatment irwinsailor Construction, Maintenance & Refit 10 23-03-2011 12:19
Trouble Finding A Leak Cruise Diver Monohull Sailboats 13 25-09-2005 05:19
Fresh water tank leak lannen Construction, Maintenance & Refit 4 09-10-2003 18:55



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:46.


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.