Overnight I charged the battery and this afternoon the same problem occurred. Now as it's a pressure system which should cut out once the required pressure is achieved I could only assume there was a leak somewhere.

I am pleased that fitting a surge damper has made a difference to the noise, but from what I know of the way they work, by its self it will not change the noise the pump makes but it will affect how often and for how long the pump works.Surge dampers became necessary in some caravans, because the storage water heaters like the Carver and Truma models all needed to have a small air cap in the tanks. This was to allow the water to expand when it was heated. The consequence of ths compressed air cap was that the hot water system attained a higher pressure than the cold water, and when a mixer-tap was opened ( for example in the shower) the pressure in the hot tank would push hot water out before the pressure switch on the cold would turn on. This gave alternate surges of hot and warm water rather than a steady temperature. Options for 1-2 working day delivery and next day timed services available on most items Zone B Surcharge Areas However, as Adria has chosen to fit the pesky Whale Pressure Switch that has its own NRV, there should be no imperative need for another NRV at or near the pump. Historically, some submersible water pumps were notoriously reluctant to prime and, when initially submerged, needed to be shaken to expel air and allow the pump’s impeller to 'get a grip’ on the water. OK if an Aquaroll-type external water container was being used, but not if the pump was in a motorhome’s fresh-water tank. Reich advertise “a patented ventilation system which is integrated into many of our pumps and provides immediate output after immersing into the tank”, and your Reisch pump should have that feature ad not suffer from priming problems. It is also apparent the pump takes a long time to turn off after the tap has been closed, which Audiorob rightly points to the pressure switch adjustment needing attention.

Even when there’s a NRV attached to a subersible pump’s outlet, that NRV will be ‘downstream' of the pump itself and, when the water system is drained down, the fresh-water tank is empty and thereand there might be residual water trapped ‘downstream’ of the NRV, the submersible pump should still self-drain. Engine Instrumentation Inboard Engine Accessories Engine Water Pump Impellers Engine Room & Exhaust Oil Pumps & Extractors Accoustic Insulation Oils, Lubricants & Additives Engine Additives & Lubricants Engine Oils Outboard Engine Accessories Thanks Derek. Have saved a copy of that exploded view for future reference. Suspect this might not be the last issue I have with the pressure switch. I've just had another go and I've discounted a leak at the tap as it stops dripping after 30 secs or so. The non return valve fitted on the wall inlet should keep the system pressure up, even with a pin hole in the delivery hose.

Electric Freshwater Galley Pumps

The solution is to provide a similar air cap for the cold water. This would act in a similar way to the hot, and smoothed or damps out the surges. Well I had a probe at the non-return valve with a blunt instrument a couple of times this afternoon, as Whale suggest (nothing too strong) and it made no difference. DC to AC Inverters Pure Sinewave Power Inverter Waeco Modified Sinewave Inverters Horns Compact Electric Horns Electric Trumpet Horns All Electrical Engine Controls & Control Cables Ultraflex C8 Engine Control Cables Ultraflex C5 Mercury/Mercruiser Control Cable Engine Control Cable Fittings & Accessories Ultraflex B14 Engine Stop Cables Engine Controls Fuel Tanks & Accessories Fuel Tanks & Jerry Cans Fuel Line Fittings & Primer Bulbs Funnels & Filters More Fuel Tanks & Accessories Man Overboard Lifebuoys & Rescue Slings Danbuoy General Man Overboard Equipment General Safety Fire Extinguishers & Fire Blankets All Safety