Whale WU7207 Pressure Switch, White

Product Information

The second system is the pressure switch system. With this arrangement you have a pressure switch in the water system which senses the water pressure. When you open a tap the pressure in the system will drop, and this drop in pressure on a diaphragm in the pressure switch causes movement of the diaphragm. This movement has the affect of turning the switch 'on' and thus supplying power to the water pump. Conversely when you turn the tap off the pump will continue running for a few seconds which has the effect of building up pressure in the system. This increase in pressure again causes movement of the diaphragm in the pressure switch which has the affect of turning the switch 'off' and thus stopping the pump. If the pump continues to operate after the tap has been turned off then it may simply be due to the pressure switch needing adjustment or there may be a fault with the pressure switch where a component or the whole assembly may need replacing. Today, Alde's boilers use the same principle and are at the forefront of efficient design. They have mushroomed in popularity over the last few years. Does anyone have any other suggestions of likely cause or steps I could follow to diagnose the problem more accurately. When used in conjunction with a diaphragm pump, the pressure accumulator also has the beneficial effect of smoothing out the pressure surges from the individual chambers within the pump. This gives rise to its more common name - that of a 'surge damper'. I’m quite surprised that Adria would have fitted to a 2017 motorhome a water system that includes an ‘old tech’ Whale pressure switch.

Experience has taught me that you might have to make more than one attempt to get the correct adjustment! however there is a complication, and that is without some sort of device to cut power to the pump it will continue to run endlessly, and in a short time the pump would fail. Whale entered the water heater market in 2009 with an upgraded version of the Prope xMalaga water heater, to which it had bought the rights. With an electric element switchable between 600 and 1200 watts and a 13-litre food grade tank, the heater set new standards for performance and efficiency.Our collections by our couriers are happening as usual. As it stands, delivery times are not being affected too much. Please be aware though that Royal Mail and other couriers are sometimes prioritising essential items so please bear with us if your delivery takes slightly longer than expected.

There's not much to see with Whale's Expanse underfloor heater Combined water and space heaters for caravans

One of the problems of using pressure switches with submersible pumps is that the delivery pressure is very dependent on the battery voltage. If you're off-grid, this can slowly decay to the point where you have to adjust the pressure switch. To eliminate this potential issue Whale and Truma each developed intelligent pressure switches that effectively do the adjustment for you (see panel). both types of control will work with the same objective and that is to reduce the time the pump actually runs and exetend it's life,

Most of us are familiar with the submersible pumps that sit inside an external water container, such as an Aquaroll ( available at Halfords, Millets and Argos) and pump the water on board. They use a small 12-volt motor to drive an impellor at high speed, forcing the water through the delivery pipe and into the caravan. Thanks for the welcome Derek. This forum contains so much useful info for the newbie like me. Even if it doesn't provide the answer it contains explanations which get me thinking about ways to solve problems. If you operate the hot taps, bear in mind that it’s normal for there to be a delay in the pump both switching on and switching off again (this can be up to 10 seconds). Being submerged, these pumps do not need priming (filling with water first) and most are self-venting, so any air trapped inside can escape through a hole in the top. If not, then shaking the submerged pump for a few seconds can help.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 pipework

Most caravan pump systems will from time to time exhibit the effect you describe. This is not exceptional and does not represent a fault. I phoned the dealer we bought the van from and discussed this and told them I think it is the non return valve, but they think the Whale pressure switch is faulty and have agreed to send me a new one which I will have to fit later as the van is now in storage. Will change this in a few weeks time and repost to let you know if it is this. ...With fitted on-board tanks, water systems can become quite complex. This is one of the simpler arrangements. The selector chooses between the two water sources, the isolator opens to fill the on-board the tank. The downside is that you have to manually operate the valves to fill and then use the on-board tank. You can switch pumps on and off in one of two ways, both of which have increased and decreased in popularity over the years. 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.