On Idigo it T's off the main supply. I do have a stop-cock on that line so I would shut that before blasting air into the main line. If course the danger of blasting air through the line is that you may just dislodge the blockage if any. I think I might try blowing through the line first from the pump end and seeing if it seems "free"
Jonathan - Indigo -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Walt Dickie Sent: Wednesday, August 08, 2012 12:29 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List Water pressure problem Thanks, list, for the suggestions. I spent some time on the boat this morning before work and I've eliminated venting problems, I think. No difference between pressure/flow when I crack open the access port and no evidence of a clogged vent. I do have the Jabsco filter in the line near the shutoff that Joel described, but it's in the shared supply line after the valves so it would affect flow from either tank. I would like to clean it out, since I think I see debris swirling around in there, but I can't unscrew the top. That's going to take some more time and fiddling (add to endless list of issues small and large requiring attention). It looks like the problem has to be in the supply line from the port tank, so Indigo's suggestion is up next. How is the foot pump connected to the tank on other C&C's? Does it have its own dedicated supply line or does it T off a single "main" supply? I can't see the lines, which are hidden under the floorboards and the settee. -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Indigo Sent: Wednesday, August 08, 2012 5:37 AM To: cnc-list@cnc-list.com Subject: Re: Stus-List Water pressure problem I use an air compressor to clear my freshwater lines for the winter. Depending on the location / size of your access port on the tank, you may be able to get an air compressor nozzle in the tank end of the water line and after disconnecting the pump end, blow out any obstruction from the line, or blow it out the other direction -- Jonathan - indigo 35III On Aug 7, 2012, at 13:14, Walt Dickie <wa...@crresearch.com> wrote: > My C&C 110 has two water tanks, one under the port settee and one in the v-berth. A valve under the sink in the galley allows me to turn the supply from each tank on and off, but with the exception of the 6" or 8" of tubing exposed at the valves almost all of the rest of the plumbing for the system is really difficult to get at. The outlets at the tanks themselves are at the base of the tanks and are completely inaccessible with the tanks in place. > > At the beginning of the season no water would flow from the port tank using either the pressure system or the foot pump, which seems to be connected directly to the tank or its outlet line. I didn't care too much about this since we don't usually use much onboard water and the forward tank seemed to be working fine. But since I couldn't easily drain the part tank, I left the water in it. > > Yesterday out of idle curiosity I turned on the port tank, turned off the forward one, and used the foot pump. Water unexpectedly gushed out. When I turned on the pressure system it came on and ran continuously, which it doesn't do when getting supplied from the forward tank, and although water now comes out of the tap the flow is feeble. The flow from the foot pump seems normal. > > It feels as though there was some kind of blockage in the supply line from the port tank and that the blockage has somehow been reduced. I drained the port tank today while I could, but now I'm wondering about a fix -- some what to clear the "blockage," if that's what it is. I don't want to rip the water tanks out to get to the supply lines, but it seems like it would be worth some effort to clear them. I've never dealt with the boat's plumbing system before so I'm clueless. Suggestions? > > Walt Dickie > C&C 110, Hull #97 > DuSable Harbor, Chicago > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
