Calypso has had the Tank Tender system in place for over 20 years. I monitor
the diesel tank and 2 water tanks. Once I learned/charted the correlation
between pressure readings and quantity of fluid in each tank it has been very
reliable as an indicator.
I installed a different type of system in the holding tank that gives
“green/yellow/red” light indication of holding tank levels. That system
requires occasional cleaning of the float switches to remain accurate.
Martin DeYoung
Calypso
1971 C&C 43
Seattle/Port Ludlow
On Mar 31, 2021, at 8:38 AM, Peter McMinn via CnC-List <cnc-list@cnc-list.com>
wrote:
Thanks for the ideas. I used my dinghy foot pump to blow out the vent on the
port tank, which resulted in increased flow from that tank. I think I need to
replace the senders in both tanks to get accurate readings on tank levels.
Neighbor on the dock suggests a Tank Tender. Any suggestions?
Peter McMinn
_/)
On Wed, Mar 24, 2021 at 6:32 AM Bill Coleman via CnC-List
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote:
This sounds likely – My usual fix for fixing the prime in the water pump in the
spring was to bring a hose on board and blast water into the tank drain, up to
the faucet – this would also blast over to the other tank, and likely blow out
whatever crud was in the line. Then vacuum out that tank and clean.
Bill Coleman
Entrada, Erie, PA
Something is preventing the free flow of water from one of the tanks. It could
be;
- a clog in the hose from the tank to the tee,
- maybe a valve, somewhere in that line that is closed,
- it could be the vent is plugged solid, creating a vacuum. Which does not
allow the water to flow.
Given that there is very little head pressure to overcome the vacuum, it
wouldn't necessarily take too much of a plug on either side to stop the water
flow.
Danny
---------- Original Message ----------
From: Rick Brass via CnC-List
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
To: "'Stus-List'" <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: Rick Brass <rickbr...@earthlink.net<mailto:rickbr...@earthlink.net>>
Subject: Stus-List Re: water tanks interconnected, or not?
Date: Tue, 23 Mar 2021 23:37:40 -0400
My 38 also has a tank under the port and starboard settees. Each of the tanks
has a shutoff valve at the outlet. The two drain hoses meet at a T under the
floorboards, and from this T is the line to the pressure pump.
Curiously, there is also a shutoff valve on each side of the T. I could see no
good purpose for the second shutoff in each supply line (unless it was there to
stop all the water from leaking out through a broken line), so I left them in
place when I replaced the hoses a while back.
Maybe you have an arrangement like this one?
Rick Brass
Washington, NC
From: Adam Hayden via CnC-List
[mailto:cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>]
Sent: Monday, March 22, 2021 7:14 AM
To: Stus-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: petemcm...@gmail.com<mailto:petemcm...@gmail.com>; Adam Hayden
<hayden.a...@hotmail.com<mailto:hayden.a...@hotmail.com>>
Subject: Stus-List Re: water tanks interconnected, or not?
Peter
Very interesting. I have the same issue except my port tank drains and the
Starboard tank does not.
Drives me crazy.
Adam c&c 36
Sent from my Bell Samsung device over Canada’s largest network.
________________________________
From: Peter McMinn via CnC-List
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Sent: Monday, March 22, 2021 3:55:08 AM
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
<cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>>
Cc: petemcm...@gmail.com<mailto:petemcm...@gmail.com>
<petemcm...@gmail.com<mailto:petemcm...@gmail.com>>
Subject: Stus-List water tanks interconnected, or not?
I have a 30gal water tank under both settees. The valves for each are set to
open flow. However, the pump seems to draw only from the starboard side. I’d
assumed that with both valves open, the tanks would equalize, but the stbd tank
empties and the pump goes dry, while the port tank remains full. Can someone
venture to what’s going on? I’ve read this 2015
discussion<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcnc-list.com%2Fempathy%2Fthread%2F2KB2NSDGELMQQJSRMPPWPHVMCWQJ2ICR%3Fhash%3DSLQZNGDWP5TUBYWW6HFGKHJT5DVCWB5F%23SLQZNGDWP5TUBYWW6HFGKHJT5DVCWB5F&data=04%7C01%7C%7C8d72db96242941d39daf08d8f45b06aa%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637528019072013898%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JqgPaF4hW1zmolXa%2BbUFlB9w2CTq6JhqoH1X1%2FgmM9E%3D&reserved=0>,
but the OP then was interested in disconnecting the two tanks. I’ll do some
exploring tomorrow to see what might be preventing the tanks from equalizing.
Ideas are welcome.
Thanks to all of the subscribers that contributed to the list to help with the
costs involved. If you want to show your support to the list - use PayPal to
send contribution --
https://www.paypal.me/stumurray<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=04%7C01%7C%7C8d72db96242941d39daf08d8f45b06aa%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637528019072021763%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=y3YCcptJt39Ez8fOGlA1N8SkjMIw%2BjN9%2BEmpWzAnxrM%3D&reserved=0>
Thanks - Stu
Thanks to all of the subscribers that contributed to the list to help with the
costs involved. If you want to show your support to the list - use PayPal to
send contribution -- https://www.paypal.me/stumurray Thanks - Stu
Thanks to all of the subscribers that contributed to the list to help with the
costs involved. If you want to show your support to the list - use PayPal to
send contribution -- https://www.paypal.me/stumurray Thanks - Stu
