I.ve managed to keep mine healthy also, though if not used it can go off, particularly in the hot water tank. Based on his many years' experience, my Dad advised a beginning of season flush (shock I guess) through the tank, all pumps and fittings with a high concentration of bleach/water, then rinse/refill with clean water. I will add approx 1 tbsp or so of bleach to the full 113l tank if it's going to sit. (I wrote the exact amount on the tank.) the HW tank may start to go off if I've not used the boat enough, in which case I drain and repeat the process. Seems to work fine. Have shared this with others who've struggled to keep their water fresh with similar results.
When cruising (12 days max so far, always in midsummer heat) I fill not only the tank, but also several 1.5l water bottles. I freeze those at home and stack in the bottom of the fridge to the extent that space permits. I thaw these one at a time as they get used. cooking, coffee, tooth-brushing etc is done with the tank water, and drinking from cold bottled water. If I refill the tank mid-cruise, I also refill the bottles. If the boat hasn't been sitting idle for weeks I am comfortable with the tank water though I'll likely get a filter at some point. Dave 33-2 On Mon, 26 Sept 2022 at 18:39, David Risch via CnC-List < cnc-list@cnc-list.com> wrote: > Cleaned and shocked the tanks every year. Its what we drank numerous > times when Bermuda bound. No ill effects from the water. > > > > We now live aboard and drink tank water twice filtered. > > > > Key is rotation. Use it and fill it. > > > > However took four water tests – 1) unfiltered, filtered once, filtered > twice and bottled water. The results were the same. > > > > > > > > *From:* dwight veinot via CnC-List <cnc-list@cnc-list.com> > *Sent:* Monday, September 26, 2022 2:36 PM > *To:* Stus-List <cnc-list@cnc-list.com> > *Cc:* dwight veinot <dwight...@gmail.com> > *Subject:* Stus-List Re: Fresh water pump dead? > > > > Are you brave enough to drink water from your fresh water tanks or even > cook food with it? Filter or not it's good for washing dishes and > showering. Quality potable in those tanks; if I was dying of thirst. Maybe. > Take the filter out. Be careful of where you take on water and chlorinate > > > > On Mon, Sep 26, 2022 at 12:59 PM David Knecht via CnC-List < > cnc-list@cnc-list.com> wrote: > > I mostly solved the mystery of my fresh water pump and wanted to update > the discussion. I got another identical Jabsco pump from Defender to > replace the new one that was not shutting off and I was able to test the > new one without removing the previous new one. It did exactly the same > thing which made me convinced the problem was elsewhere. The hint came > when I realized that air was getting into the system because the water > coming out of the tap had frequent air gaps in flow. I knew the problem > was in the inflow because the pressure that the pump generated was > maintained in the outflow system for many days. I did not think the > problem was in the tank lines since they were not leaking water. The > manifold also seemed fine. My suspicion then centered on the filter > between the manifold and the pump. I pulled that out of the line and the > pump pressurized and shut off quickly. I am still not sure where the > filter housing was leaking air but there is no obvious seal between the > housing and the base. Unlike the pump, that filter design has changed > radically in what came with the new pump, so I suspect I am not the first > to have problems with it. Dave > > > > S/V Aries > > 1990 C&C 34+ > > New London, CT > > > > > On Sep 9, 2022, at 2:52 PM, Korbey Hunt via CnC-List < > cnc-list@cnc-list.com> wrote: > > > > I have had new pump pressure switch failure occur shortly after > installation. > > > > Get Outlook for Android > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2FAAb9ysg&data=05%7C01%7C%7C88225c15e956465cc06c08da9fee0fd4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637998142060481162%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=US%2FB8LYF12PvB94XWZn4%2BEfHu7SMD%2FcCYyVjG59KcK0%3D&reserved=0> > ------------------------------ > > *From:* Bill Coleman via CnC-List <cnc-list@cnc-list.com> > *Sent:* Tuesday, September 6, 2022 12:06:47 PM > *To:* Stus-List <cnc-list@cnc-list.com> > *Cc:* Bill Coleman <colt...@gmail.com> > *Subject:* Stus-List Re: Fresh water pump dead? > > > > And not to beat a dead horse, but as I mentioned B4, I had no luck with > the t;ypical pumps available, and once I went with the Johnson, all my > problems went away. Maybe they have a better designed check valve. > > > > Bill Coleman > > > > On Tue, Sep 6, 2022 at 3:07 PM David Knecht via CnC-List < > cnc-list@cnc-list.com> wrote: > > Good thoughts. I can see in my tanks and there is not any significant > amount of sludge. I also have a strainer that was already in the line just > before the pump. The pump came with one, but I elected to leave the > existing one in place. I cleaned the filter and there was not much there. > Dave > > > > David Knecht > > Rear Commodore > > Thames Yacht Club > > New London, CT > > > > > > > > On Sep 6, 2022, at 2:21 PM, Matthew via CnC-List <cnc-list@cnc-list.com> > wrote: > > > > If you have that much sludge, you may want to consider an in-line > strainer. I have one between my bilgewater intake and my diaphragm bilge > pump, and I know I’ve saved the pump from a lot of crud. My strainer is > simple and looks like the product at the link below, but as I recall it was > made by a company with a marine presence (like Forespar or Surflow). Very > easy to install and clean periodically. > > > > 1/2 Inches Water Pump Strainer, Compatible with 3/8 Inches Hose Barb > In-Line Strainer Twist-On Pipe Sprayer Filter for Water Pump 12V DC 80 PSI > RV Camper Marine Boat Lawn (1): Amazon.com: Industrial & Scientific > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.amazon.com%2FStrainer-Twist-Sprayer-Filter-Camper%2Fdp%2FB094NQNVMF%2Fref%3Dsr_1_6%3Fkeywords%3Dwater%2Bstrainer%2Bmarine%26qid%3D1662487937%26sr%3D8-6&data=05%7C01%7C%7C88225c15e956465cc06c08da9fee0fd4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637998142060481162%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2BXtHEmjRxl%2BD7HzY958vJTdxYVNvE3h3JiJk45Ev2jg%3D&reserved=0> > > > > *From:* Bill Coleman via CnC-List <cnc-list@cnc-list.com> > *Sent:* Tuesday, September 06, 2022 1:52 PM > *To:* Stus-List <cnc-list@cnc-list.com> > *Cc:* Bill Coleman <colt...@gmail.com> > *Subject:* Stus-List Re: Fresh water pump dead? > > > > Maybe you have a lot of sludge in your tank, I often put a hose on the far > end of my water system and run a couple tanks out into the slip to clean it > up. > > > > Bill Coleman > > Entrada, Erie PA > > > > On Tue, Sep 6, 2022 at 1:17 PM David Knecht via CnC-List < > cnc-list@cnc-list.com> wrote: > > It looks like the pump version was not the problem. I will confirm > tomorrow, but according to Defender, I did indeed purchase the pressure > limited version of the pump. I don’t think they even sell the non-pressure > limited version. The response I got from Jabsco/Xylem customer support > said to do this: > > > > The problem with your pump is the Check Valve. What you would need to do > is too clean it. Take the six screws out they would are Long then Short in > size; the pump will come part in two pieces the motor and lower housing as > one piece and the pump head; once you spread the two pieces apart the check > valve will usually fall out by itself. The check valve looks like a > triangle with suction cups in each corner on one side and the other side > theirs a rubber diaphragm in the center; that are machine press in(Take a > picture of the check valve “Both Sides”). Take the check valve and place it > in a bucket of warm water wait a couple of minutes. While the check valve > is soaking; take the head where the suction and the discharge hose hookup > and rotate and look inside. You will see a circle in the center a 1/8” > edge; take a wet towel and wipe off that edge (Front, Back and Top Edge). > Take the Check Valve when it’s submerged pick it up and slush it back and > forth in the bucket of water for a couple of minutes (While Submerged). > This should clear all the particles. Place the check valve back into the > Head of the pump and put it back together. 90% of the time your pump will > be back to normal. > > > > Seems excessive for a brand new pump but I guess I will have to try it. > > Dave > > > > S/V Aries > > 1990 C&C 34+ > > New London, CT > > > <image001.png> > > > > > > -- > > Sent from Gmail Mobile >
