Reply
 
Thread Tools Display Modes
 
Old 10-27-2013, 03:17 PM   #1
Senior Member
 
knotheadcharters's Avatar
 
City: Jacksonville, FL
Vessel Name: Amar la Vida
Vessel Model: 1989 Carver Californian 48' MY
Join Date: Jan 2011
Posts: 327
Electric heads.

Alright, two weeks ago my forward heading stopped pumping water to flush. I replaced the impeller, it was worn but no broken vanes. Primed the hoses and guess what? Still not pumping flush water. The funny thing is that my Dad has had the same problem with his boat ALL summer. He has replaced every component on his toilet from the through hull to the bowl. He still cannot get it to flush. Yes the pick up is clear and not clogged with anything on both boats. We have different toilets and different pumps Etc. but the same problem??

Any ideas from the gurus?

Thanks
__________________
Advertisement

knotheadcharters is offline   Reply With Quote
Old 10-27-2013, 03:23 PM   #2
Guru
 
Moonstruck's Avatar
 
City: Hailing Port: Charleston, SC
Country: USA
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 7,848
Quote:
Originally Posted by knotheadcharters View Post
Alright, two weeks ago my forward heading stopped pumping water to flush. I replaced the impeller, it was worn but no broken vanes. Primed the hoses and guess what? Still not pumping flush water. The funny thing is that my Dad has had the same problem with his boat ALL summer. He has replaced every component on his toilet from the through hull to the bowl. He still cannot get it to flush. Yes the pick up is clear and not clogged with anything on both boats. We have different toilets and different pumps Etc. but the same problem??

Any ideas from the gurus?

Thanks
Assuming the head is saltwater flush, have you checked your vented loop?
__________________

__________________
Don on Moonstruck
Sabre 42 Hardtop Express & Blackfin 25 CC
When cruising life is simpler, but on a grander scale (author unknown)
http://moonstruckblog.wordpress.com/
Moonstruck is offline   Reply With Quote
Old 10-27-2013, 04:06 PM   #3
Senior Member
 
knotheadcharters's Avatar
 
City: Jacksonville, FL
Vessel Name: Amar la Vida
Vessel Model: 1989 Carver Californian 48' MY
Join Date: Jan 2011
Posts: 327
its not in the flush, Don the toilet flushes fine, it's the seawater to rinse the bowl. If I pour water in the bowl everything goes out. I just don't have any "clean" read seawater flush water entering the bowl.
knotheadcharters is offline   Reply With Quote
Old 10-27-2013, 04:37 PM   #4
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,732
Happened to me once. Found a little bloated fish stuck in the intake line. Don't know how he made it past the intake strainer.
__________________
David Hawkins
Deer Isle, Maine
dwhatty is online now   Reply With Quote
Old 10-27-2013, 05:05 PM   #5
Senior Member
 
knotheadcharters's Avatar
 
City: Jacksonville, FL
Vessel Name: Amar la Vida
Vessel Model: 1989 Carver Californian 48' MY
Join Date: Jan 2011
Posts: 327
Nothing clogged just will not draw it up to enter the bowl.
knotheadcharters is offline   Reply With Quote
Old 10-27-2013, 06:12 PM   #6
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,882
Quote:
Originally Posted by knotheadcharters View Post
Nothing clogged just will not draw it up to enter the bowl.
pretty basic but easily overlooked....is the shaft turning the impeller turning and is the "lock"...whatever type....that makes the impeller spin doing its job?
psneeld is offline   Reply With Quote
Old 10-27-2013, 06:26 PM   #7
Guru
 
Moonstruck's Avatar
 
City: Hailing Port: Charleston, SC
Country: USA
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 7,848
Quote:
Originally Posted by knotheadcharters View Post
its not in the flush, Don the toilet flushes fine, it's the seawater to rinse the bowl. If I pour water in the bowl everything goes out. I just don't have any "clean" read seawater flush water entering the bowl.
You can still have a vented loop or anti-siphon valve in the intake
__________________
Don on Moonstruck
Sabre 42 Hardtop Express & Blackfin 25 CC
When cruising life is simpler, but on a grander scale (author unknown)
http://moonstruckblog.wordpress.com/
Moonstruck is offline   Reply With Quote
Old 10-28-2013, 12:36 AM   #8
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
The pump housing could be worn beyond the point where a new impeller won't pull a suction.

There could be an air leak on the intake side.

Don, since a vented loop is designed to let air into a line it really shouldn't be in a suction line. I know people do it but it reduces the amount of water the pump will move. If you need to prevent water from siphoning into the toilet bowl, the vented loop should go between the pump and the bowl if possible.
HopCar is offline   Reply With Quote
Old 10-28-2013, 12:37 AM   #9
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
Knothead, what brand and model toilet is it?
HopCar is offline   Reply With Quote
Old 10-28-2013, 12:54 AM   #10
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: 2011 Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 10,262
Sorry, can't help. Have a freshwater flush.

__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 10-28-2013, 05:27 AM   #11
Hospitality Officer
 
Andy G's Avatar
 
City: Pittwater
Country: Australia
Vessel Name: Sarawana
Vessel Model: IG 36 Quad Cabin
Join Date: Sep 2010
Posts: 1,557
Not sure if this will help, however I have had a similar problem with identical symptoms you described.

My problem turned out to be with the raw water inlet. Try turning off your stop cock and undo the inlet pipe, my unit had a calcium build up restricting the flow. I mixed up a bit of acid in a bucket and dropped the pipe in.

Takes about 15 minutes, cleared the build up, and solved the problem.

I have two electric Tecma's, this problem has only happened on my aft unit, no idea why.

Anyway, hope this helps.

Edit: a photo of the offending part, the bent pipe had the calcium build up, virtually stopping the water flow.
Attached Thumbnails
Click image for larger version

Name:	raw water 2 002.jpg
Views:	105
Size:	75.0 KB
ID:	24130  
Andy G is offline   Reply With Quote
Old 10-28-2013, 09:48 AM   #12
Guru
 
BobH's Avatar
 
City: Montgomery, TX
Country: USA
Vessel Model: None, but looking
Join Date: Feb 2012
Posts: 778
Jelly fish or plastic bag blocking the intake under the boat. Stick a water hose in the inlet hose and reverse flush the intake.

Bob
BobH is offline   Reply With Quote
Old 10-28-2013, 10:00 AM   #13
Senior Member
 
obthomas's Avatar
 
City: Seabrook Texas
Country: USA
Vessel Name: TheVenture
Vessel Model: 1985 Bestway Labelle Sundeck 40ft
Join Date: May 2013
Posts: 462
Jabsco and TMC type toilet pumps use one motor to turn the seawater supply pump (flexible impeller) and the effluent pump (macerator) in unison on oposite sides of a wear plate. More than likely your overhaul has a defect allowing the intake pump to suck air and or effluent from the other side of the wear plate.

O.B. Thomas, P.E.
obthomas is offline   Reply With Quote
Old 10-28-2013, 11:24 AM   #14
Senior Member
 
mahal's Avatar
 
Join Date: May 2010
Posts: 436
Quote:
Originally Posted by obthomas View Post
Jabsco and TMC type toilet pumps use one motor to turn the seawater supply pump (flexible impeller) and the effluent pump (macerator) in unison on oposite sides of a wear plate. More than likely your overhaul has a defect allowing the intake pump to suck air and or effluent from the other side of the wear plate.

O.B. Thomas, P.E.
Best answer IMO. If there is no clog, I would look for a vacuum leak next. Also check the hose connections at the through hull and the pump intake.
mahal is offline   Reply With Quote
Old 11-02-2013, 06:56 AM   #15
Senior Member
 
knotheadcharters's Avatar
 
City: Jacksonville, FL
Vessel Name: Amar la Vida
Vessel Model: 1989 Carver Californian 48' MY
Join Date: Jan 2011
Posts: 327
Hey guys thanks for the input. The unit is a Raritan Crown head electric toilet. I still haven't found the culprit yet. I have not pulled the intake hose off the seacock to check for flow but I have blown air through it and it does not appear to be clogged. I also pulled the check valve and there was a small rock in the housing but to no avail it still won't pull water. I am going to contact Raritan and see what they say.
knotheadcharters is offline   Reply With Quote
Old 11-02-2013, 10:52 AM   #16
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
I would pull the intake hose off the intake pump, lower the end below the waterline and see that the water flow is strong. I don't think blowing through the hose is a good enough check.

Are all the connections tight? No air getting into the intake line.

Is there a blockage between the intake pump and the bowl?

All of the above checks out? Replace the pump. You need part number
CH102MW.
Raritan used that stupid little plastic pump head on several of their products.
HopCar is offline   Reply With Quote
Old 11-02-2013, 10:14 PM   #17
Guru
 
River Cruiser's Avatar
 
City: UMR MM283
Country: US
Vessel Name: Northern Lights II
Vessel Model: Bayliner 3870
Join Date: Jan 2013
Posts: 1,226
A friend had the same problem on his Raritan head, the proble was on the discharge side, the bowl was plugged with zebra mussels. I don't recall what he used to clean them out, but he rebuilt the pump & checked hoses before he discovered the problem.
__________________
Ron on Northern Lights II
I don't like making plans for the day because the word "premeditated" gets thrown around in the courtroom.
River Cruiser is offline   Reply With Quote
Old 11-09-2013, 08:36 AM   #18
Senior Member
 
knotheadcharters's Avatar
 
City: Jacksonville, FL
Vessel Name: Amar la Vida
Vessel Model: 1989 Carver Californian 48' MY
Join Date: Jan 2011
Posts: 327
No River Cruiser, two separate portions of the system, plus she flushes like a champ. I'll look again this weekend and see if I have a air leak.
knotheadcharters is offline   Reply With Quote
Old 11-09-2013, 02:08 PM   #19
Veteran Member
 
Pete37's Avatar
 
City: Grasonville, MD
Country: USA
Join Date: Oct 2013
Posts: 52
Hi Knothead,

Sounds like a faulty exhaust hose. The exhaust hose should go upward to a point above the toilet and the waterline. At that point a vented loop is installed and the hose is routed downward to the thruhull. If your hose is routed directly to the thruhull without the vented loop all the water will drain out and no water will be left in the bowl.

Some heads have a separate intake pumps for pumping flush water into the bowl. Raritan has several Crown heads that do this. I'm looking at Get Rid of Boat Odors by Peggy Hall (The Marine Head Bible). She lists the Crown Head Centrifugal Discharge, Crown Head II, Crown Head Perm Mag, Atlantes pre 2002 and Atlantes post 2002. Which one is yours? All have separate intake pumps. Is it possible you simply don't have the Flush Water pump hooked up so that it can be operated independently?

Pete37
__________________

Pete37 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 03:29 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012