Whale WU7207 Pressure Switch, White

Product Information

With a good pressure switch and using these steps above the pump should work when you want it and stop when you want it to. The Whale damper is quite ‘cheap and cheerful’ (though not exactly cheap) with no pressure adjustment. As mentioned in this 2013 Caravantallk thread Diaphragm pumps are much less susceptible to pressure variations with voltage. For this reason, it is quite common for a pressure switch to be built into the pump as the preferred means of switching. Water heaters for caravans

If there’s no water leakage preventing the water system from pressurising properly, the prime suspect for the ‘surging’ must be the Whale Pressure Switch. So if the problem does not spontaneously cure itself, beginning by swapping the Pressure Switch would make sense. And, if there are no leaks and fitting a replacement Pressure Switch and pump is ineffective, that would just leave the Whale surge damper. Installation instructions for the damper are here Truma's Ultrastore water heater replaced the Cascade, which itself had been around for some years. You will find the Ultrastore on many UK caravans made between 2001 up to 2013. Although still in production, it has now been largely superseded by Truma' s Combi heater, which also provides ‘space heating’.Several companies make electrically-driven diaphragm pumps for caravans. One of the most common in the UK is the Flojet, supplied by Truma. Swift Group fits them in a variety of their caravans. I'll take a more detailed look when I get home and maybe swap it out with the new pump. If that resolves the problem then I'll see if it's possible to disassemble it and fix it and it can become my spare pump.

As already mentioned above, pressure switches are prone to voltage variations. So, if you’re on mains hook-up on one trip and everything is fine (your 12V battery is kept fully topped up by the caravan’s charger), then on your next trip, which is off-grid (without hook-up), the water supply might be fine at first, but as the voltage from the battery drops, it’s likely the pressure switch will need adjusting at some point. As with the other units, on occasion, I have had to repeat the process to get it right; but generally, once it’s been done, that’s it. Buying Your Perfect Caravan, the 2023 special edition is available now. Including everything you need to know about buying your first caravan, with essential guides, top tips and buying advice. Available in both digital and print. Find out more about either the digital edition here or the Print edition here. Now open any tap slowly, to the point where you have a smooth flow of water, and then close it again. The pump should continue to run.

I am interested in finding out more about the NRV and the boiler, for which both are difficult to get to as they are under a part of the seating that is fixed down. In 1994 Trumaintroduced its first comb iboiler. It provided blown air heating and hot water from a single device but its size, weight and cost made it more suitable for motorhomes than touring caravans. Fitted in-line, the Whale Pressure Switch provides a simple and convenient way of creating a pressure system with an electric pump that does not have its own switch. The Pressure Switch is normally fitted close to the pump on discharge side (before any in-line Y piece). The Pressure Switch detects the opening and closing of any tap in the system. An in-line filter is recommended on the inlet side to prevent dirt from entering the pump or switch. You can switch pumps on and off in one of two ways, both of which have increased and decreased in popularity over the years.

I’m quite surprised that Adria would have fitted to a 2017 motorhome a water system that includes an ‘old tech’ Whale pressure switch. Now let’s take a look at how to adjust the various types of the most popular pressure switches found in caravans. Whale in-line pressure switch Whale in-line pressure switch might be hidden in pipeworkThese switches can be rather buried among the pipework, but they will be attached to the cold water pipes and have a couple of wires going to them, and a clearly visible thumbwheel. Readjusting the pressure switch to the high voltage available to stop this pulsating will cause the pump to fail to turn off when a lower voltage is available. With pumps such as the Shurflo or Flojet the pressure switch is part of the pump itself. On some systems where the Crystal 2 water inlet is used the Whale pressure switch, our ref 105500, is installed in the cold water pipe work, normally under a seat and close to the water inlet. On the Whale Watermaster system the pressure switch forms part of the water inlet and an adjustment screw can be found on the rear of the inlet.