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Subject Topic: Pump wont switch off Post Reply Post New Topic
PersonRidout
18/3/2018 at 8:45pm
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Hiya. I own a elddis crusader tornado 2010. We have only used it twice (2 consecutive weekends). The first weekend the water pump seemed ok. It would only run when the 'taps' switch was on and we were using the water (hot and cold). However, this weekend it seems to be running continuously whether or not the water is in use and only stops if i turn off the taps switch. Its really testing my patience as i cant find a solution for the life of me! Help!


Persontango55
18/3/2018 at 8:47pm
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When you went out the first time were you on electric hook up and the second time just on battery power or vice versa?


PersonRidout
18/3/2018 at 9:22pm
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Hi thank you for replying! We were on electric both weekends (I presume). How would i know if i was running on battery out of interest? We were plugged into the electric hook up both weekends and nothing was different to the first weekend that i know of. Ive read that it could be somthing to do with presure or pressure swithces but i haven got much of a clue my 1st caravan. Cheers


Persontango55
18/3/2018 at 9:34pm
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Yes the problem is connected to the pressure switch and the reason I asked about electric hook up is because the voltage supply to the water pump can vary slightly when changing over which affects the operation of the pump. The switch then needs adjusting slightly which is quite easy to do but the video link below will give you a better idea how to adjust it.

Here


PersonRidout
18/3/2018 at 9:45pm
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Ye i watched that video and i tried to find the switxh under the setee by the pump but i carnt find it. Would there defenitly be a pressure switch there? could it be a different type or style to whats in that video. Cheers


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Persontango55
18/3/2018 at 9:52pm
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Yes it could be a different set up. The taps could be operated by a micro-switch under each tap but not familiar with set up at all although there are members on this forum know how to trace a fault in the system. However, have a look for micro-switch water systems and see if you can find anything on the net or youtube etc.
This previous thread may help regarding microswitch systems.

Previous Thread


PersonRidout
18/3/2018 at 9:57pm
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Ok thank you for your help I appreciate it next weekend il be busy trying to fix it. I hope i can work it out.


Persontango55
18/3/2018 at 10:15pm
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Another thing to check too is the caravan leisure battery. The water pump is run by 12 volt power which comes direct from the leisure battery so check the battery voltage with get a voltmeter as a low voltage battery will cause the pump to run. A fully charged battery should show a reading of around 12.8 volts but if it's 12.5 or below then this could be contributing to the problem. This may explain why the pump was okay initially but not the second time around because if the battery wasn't charged after the first outing then the battery could be the problem.


PersonBeanyman
18/3/2018 at 10:33pm
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We experienced something similar last year. All was well for a few days then the pump was on constantly one evening after using the taps.

Googled the symptoms and pressure switch was a common theme. Having no idea (novice) and using the infamous cure to all IT issues - I turned off the pump, disconnected the hose to the van outside, plugged it back in and then turned the pump back on. Pump started up again and after a short period of time, it stopped and normal service resumed

May have been luck, may have been air, dunno but resetting everything worked - worth a shot.


PersonJohnnie Boy
19/3/2018 at 7:35am
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Quote: Originally posted by Beanyman on 18/3/2018
I turned off the pump, disconnected the hose to the van outside, plugged it back in and then turned the pump back on. Pump started up again and after a short period of time, it stopped and normal service resumed

May have been luck, may have been air, dunno but resetting everything worked - worth a shot.


I only found out after a few years of caravanning that it's recommended to disconnect the pump before you submerge it back into the water container.

I'm guessing it's to expel as much air as possible before it enters the system and causes issues.



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PersonG7ACU
19/3/2018 at 5:04pm
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A 2010 van will use a pressure switched water system, so you can disregard checking for micro-switches. The pressure switch will either be in-line or built into the back of the water inlet socket. Same principle to check/adjust regardless of switch type.

As suggested above though, check battery condition first to ensure charger fully operational, plus ensure system purged fully. The pump running on is indicative of the system not having reached the correct shut-off pressure, and this can be caused by a number of issues, but check as suggested first before changing pressure switch.

-------------
Paul

Every day's a school day!


PersonRidout
19/3/2018 at 6:20pm
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Thanks for that good info. The battery i got when i bought the caravan diesnt seem to be a proper leauire battery seem to be more like a car battery i dunno if that would make a differnce


Persontango55
19/3/2018 at 6:48pm
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A car battery is a shallow cycle battery and a leisure battery is a deep cycle battery but if you do a search on the internet there are numerous websites with related information on the topic. It should say on the battery if it is a leisure battery with the number of amp hours (ah). However, the information provided by C7ACU is worth following as it could be a number of issues before suspecting the operation of the pressure switch.


PersonRidout
19/3/2018 at 6:59pm
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Its funny how it worked fine with no problems the 1st weekend and then not the second


VangoMan02
19/3/2018 at 11:29pm
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A little tip I learned when connecting the pump. Before you connect the pump to the van. Submerge the pump into the water barrel holding the van end and dunk it up and down half a dozen times, then connect it to the van.
This dispels any air in the pump which is generally the reason for it running continuous.
Wait till your water heater has filled and then run the taps until you get an even flow with no air spitting.

Occasionally I have had to adjust the pressure switch but not very often to be honest.


-------------
It is a wise man who has something to say.
It is a fool who has to say something.


Personchrisn7
20/3/2018 at 5:05pm
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My last van had the separate white Whale pressure switch. I never had to disconnect the pump to van connection (which is a pain with Whale anyway.

As Tango said a change in voltage affects the system, so the switch may have to be adjusted each time you change voltages.

Turn the wheel on the switch right down as in turning off a tap, then open it back up again until the pump stops, then a further half turn. This should be very close to the correct setting, but you can fine adjust as required.

This system does giving a warning too. If the pump kicks in unexpectedly, you may have a dripping tap, or a slight leak - always worth following up...



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