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Author Topic:   28 Conquest Fresh Water Problem
QualityTime posted 08-08-2004 11:16 PM ET (US)   Profile for QualityTime   Send Email to QualityTime  
I have a 2001 28 Conquest, when a sink faucet is turned on the fresh water stops and starts randomly. I can't find the filter for the fresh water pump. The pump is located on the starboard bulkhead. The raw water pumps are located on the port bulkhead and they have screw on filters with screens that can be removed and rinsed. The dealer is 2 hrs away snd it should be an easy fix so I would like to solve myself.

Thanks in advance.

bsmotril posted 08-09-2004 08:41 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Could be the pump is not primed fully and has an airlock. When mine runs dry on my Conquest23, it does the same thing after being refilled. Application of suction on the end of the hose or faucet with the pump running will prime it fully. I stick the shower hose in my mouth and do it that way until you get a solid water stream. BillS
kingfish posted 08-09-2004 08:55 AM ET (US)     Profile for kingfish  Send Email to kingfish     
Had a similar (I think) problem with the raw water wash down on our Parker; it operated in fits and starts, and wouldn't get up to the pressure it should have. Upon close inspection, I found the transparent plastic filter screen housing had a small crack (So small I didn't even recognize at such right away), apparently caused by the marina doing an incomplete job of draining all the systems before winterization last year, leaving some water in the filter housing which froze, expanded, and cracked the housing. I took the housing off, roughed the plastic up around the crack on the outside of the housing with 100 grit sand cpaper, and applied a thin coating of quick set Marine-Tex over the crack on the *outside* of the housing. When operating, the housing is in vacuum, so the suction forces are trying to pull the patch through the crack; can't do it, and the patch has worked like a champ. We're kind of remote, thus the patch rather than replacement.
kingfish posted 08-09-2004 08:58 AM ET (US)     Profile for kingfish  Send Email to kingfish     
Sorry for the re-post - never got around to the conclusion:

Any small opening or crack in the system will cause a problem, like a loose connection, etc. If you find the problem is not a poor prime, look the system over carefully for any place even a small amount of air can be sucked in.

QualityTime posted 08-09-2004 02:22 PM ET (US)     Profile for QualityTime  Send Email to QualityTime     
Thanks for the ideas, will have to wait until the weekend to try.

bsmotril - do you have a clear plastic filter on your fresh water pump like the raw water pumps? All three of my pumps look the same but only the raw water pumps have the filter attached. Is the fresh water filter located elsewhere?

Peter posted 08-09-2004 07:46 PM ET (US)     Profile for Peter  Send Email to Peter     
Your fresh water system should have a filter screen somewhere between the water tank and the pump inlet if it was rigged properly. You may need to trace the water line back from the pump inlet to the water tank. The filter screen should be located somewhere near an inspection port for easy access. The pumps should self prime.
bsmotril posted 08-10-2004 08:30 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
No filter that I can see on my freshwater pump. The freshwater pump is a diaphragm pump which is different than all the other pumps on the boat. Because it is about 15' away from the tank, it always needs to be primed after being run dry. BillS
Peter posted 08-11-2004 01:26 PM ET (US)     Profile for Peter  Send Email to Peter     
Diaphragm pumps are usually self priming. However, that is a pretty long run between the tank and the pump. Also, if you don't have a filter screen in front of the inlet, your pump might have junk in it preventing it from self priming.
QualityTime posted 08-14-2004 07:31 PM ET (US)     Profile for QualityTime  Send Email to QualityTime     
Checked out the pump today, could not get the pump to run so I removed it. Could not find a filter although the Whaler manual clearly shows the same clear plastic filter as the raw water pumps. Probably will have to replace it. Deciding whether to go with the same Flojet or upgrade to another pump. Any suggestions?
ROLLOFF posted 08-15-2004 07:38 AM ET (US)     Profile for ROLLOFF  Send Email to ROLLOFF     
HAPPYJIM posted 08-15-2004 07:45 AM ET (US)     Profile for HAPPYJIM  Send Email to HAPPYJIM     
Fill it with a 10% solution of bleach then flush good with fresh water to get rid of the bleach. If it still smells do it again until smell is gone. If fresh water sets too long in the tank it will start to smell.
TRAFFICLAWYER posted 08-15-2004 08:02 PM ET (US)     Profile for TRAFFICLAWYER    
email your tel# and I'll tell you all you want to know about it.

frostbite posted 08-15-2004 09:44 PM ET (US)     Profile for frostbite  Send Email to frostbite     

Do you have a pressure switch in your system?

QualityTime posted 08-15-2004 11:21 PM ET (US)     Profile for QualityTime  Send Email to QualityTime     
I have the Flojet Quiet Quad, I beleive the switch is built into the pump. Opened the pump up, the coils are black and smell burnt.

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