umpire111 Posted June 10, 2017 Report Share Posted June 10, 2017 At wits end and looking for inspiration. Have a Whale Watermaster 1214B which has been working well. It has now started cycling in every few minutes. I have checked all taps, prv, etc and there are no leakages on outlet side. Have serviced the pump after speaking to Whale, no change. Have also tried another pump whic h I know is working fine, it still cycles in! Any ideas PLEASE Link to comment Share on other sites More sharing options...
mrsmelly Posted June 10, 2017 Report Share Posted June 10, 2017 1 minute ago, umpire111 said: At wits end and looking for inspiration. Have a Whale Watermaster 1214B which has been working well. It has now started cycling in every few minutes. I have checked all taps, prv, etc and there are no leakages on outlet side. Have serviced the pump after speaking to Whale, no change. Have also tried another pump whic h I know is working fine, it still cycles in! Any ideas PLEASE My money is on you having a leak somewhere in the boats plumbing after the pump, it could be almost anywhere. Link to comment Share on other sites More sharing options...
umpire111 Posted June 10, 2017 Author Report Share Posted June 10, 2017 All bilges are dry, checked all pipe work thoroughly Link to comment Share on other sites More sharing options...
bizzard Posted June 10, 2017 Report Share Posted June 10, 2017 Empty water tank? 1 Link to comment Share on other sites More sharing options...
rusty69 Posted June 10, 2017 Report Share Posted June 10, 2017 calorifier leak? Toilet flush leak? Link to comment Share on other sites More sharing options...
OldGoat Posted June 10, 2017 Report Share Posted June 10, 2017 ? Grotty PRV on hot water cylinder - many are arranged to discharge overboard (mine goes into engine bilge) Link to comment Share on other sites More sharing options...
bizzard Posted June 10, 2017 Report Share Posted June 10, 2017 Confiscate its bicycle. 1 Link to comment Share on other sites More sharing options...
Billy Boy Posted June 10, 2017 Report Share Posted June 10, 2017 Acumilator diaphragm, if you have one. Link to comment Share on other sites More sharing options...
umpire111 Posted June 10, 2017 Author Report Share Posted June 10, 2017 Checked pro, outlet dry, put tissue paper in to check. No leaks anywhere and all bilges dry. It's been going on about a month now. Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 10, 2017 Report Share Posted June 10, 2017 14 minutes ago, Billy Boy said: Acumilator diaphragm, if you have one. How can that make it cycle, alter the frequency to a degree, yes, but not make it suddenly start cycling. I go with the goat as a first check as the OP has serviced the pump so we can assume (I hope) he rebuilt it properly so the valves are all sealing. 1 Link to comment Share on other sites More sharing options...
umpire111 Posted June 10, 2017 Author Report Share Posted June 10, 2017 26 minutes ago, rusty69 said: calorifier leak? Toilet flush leak? Tried another pump and same problem. Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 10, 2017 Report Share Posted June 10, 2017 That is exactly what you will find if you have an internal or external leak. A calorifier leak will ether fill the bilge if its external or cause the engine or central heating header tank to overflow if its internal (Unless you have a domestic type pressurised heating system). A leak on the toilet flush will only fill the holding tank or cassette more quickly and until the tank/cassette is full will not fill the bilge. Link to comment Share on other sites More sharing options...
WotEver Posted June 10, 2017 Report Share Posted June 10, 2017 7 minutes ago, umpire111 said: Tried another pump and same problem. Which points to a leak. Can't be anything else. Link to comment Share on other sites More sharing options...
mark99 Posted June 10, 2017 Report Share Posted June 10, 2017 How can it not be a leak? Link to comment Share on other sites More sharing options...
WotEver Posted June 10, 2017 Report Share Posted June 10, 2017 17 minutes ago, mark99 said: How can it not be a leak? Indeed, it can't not be. Obviously it's somewhere obscure, like the loo flush valve weeping into the pan as Tony B suggested, but wherever it is it's a leak. Link to comment Share on other sites More sharing options...
ditchcrawler Posted June 10, 2017 Report Share Posted June 10, 2017 Do you have any isolation valves on the system so you can shut bits off 1 Link to comment Share on other sites More sharing options...
umpire111 Posted June 10, 2017 Author Report Share Posted June 10, 2017 2 hours ago, Billy Boy said: Acumilator diaphragm, if you have one. As I type am turning off isolation valves, only found two, one for loo and other calorifier, turned both off me at a time and problem continues! Link to comment Share on other sites More sharing options...
mross Posted June 10, 2017 Report Share Posted June 10, 2017 The water is going to one of three places; the bilge, overboard or back to the fresh water tank. It could be very hard to find a leak into the bilge. It could be a galley tap or showerhead dripping - it does not take much. Another possibility is that the accumulator has lost its air, in which case the slighest drip will cause a big pressure drop and start the pump. Link to comment Share on other sites More sharing options...
umpire111 Posted June 10, 2017 Author Report Share Posted June 10, 2017 Thanks, don't have an accumulator, determined to find it, Link to comment Share on other sites More sharing options...
mross Posted June 10, 2017 Report Share Posted June 10, 2017 If you don't have one, why are you looking for it? It's under the bed or behind the wardrobe. Link to comment Share on other sites More sharing options...
IDS Posted June 10, 2017 Report Share Posted June 10, 2017 Can you isolate tank from pump (inlet side of pump) and see if this stops the cycling. A (recently) previous thread poster found that this identified that the pump valves were allowing some back flow to the tank. Link to comment Share on other sites More sharing options...
WotEver Posted June 10, 2017 Report Share Posted June 10, 2017 1 hour ago, IDS said: Can you isolate tank from pump (inlet side of pump) and see if this stops the cycling. A (recently) previous thread poster found that this identified that the pump valves were allowing some back flow to the tank. I was going to suggest the same thing but OP stated that a new pump exhibits the same problem. Unless the new pump had the same fault of course. Link to comment Share on other sites More sharing options...
frangar Posted June 11, 2017 Report Share Posted June 11, 2017 Is it a brand new spare pump? If it's been used it may well have the same fault Link to comment Share on other sites More sharing options...
umpire111 Posted June 11, 2017 Author Report Share Posted June 11, 2017 9 hours ago, IDS said: Can you isolate tank from pump (inlet side of pump) and see if this stops the cycling. A (recently) previous thread poster found that this identified that the pump valves were allowing some back flow to the tank. Will try that, thanks Link to comment Share on other sites More sharing options...
umpire111 Posted June 11, 2017 Author Report Share Posted June 11, 2017 10 hours ago, mross said: If you don't have one, why are you looking for it? It's under the bed or behind the wardrobe. Determined to find the problem/leak etc. Link to comment Share on other sites More sharing options...
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