Excellent and very helpful. Could be a mini series here based on simple maintenance tips? How to sterilise the water system would be a good one. Cheers.
Ahhhh why didn't I think of that..very good that will be using the external submersible pump, but not submersed in water of course? It will push the water through the system.. Up until now I opened everything up on my last ride home to shake the water out, however I can do both now .. Excellent 👍 thank you😊
No, the pump is in the water, but as the hot water tank is empty, the water going into the tank pushes the air in the tank through the system, but the ‘new’ water going into the tank doesn’t get to reach the outlet pipe and fill the system again. Then you let that run out using the drain down valve.. if you get my drift…
Excellent, I didn't think of that, last winter I had the cold water pipes push out of the Y joint in the bathroom, damaging it, I bought a new one and a new longer length of pipe so it wasn't so tight, a question for you, when I was buying the new pipe I noticed that they are supposed to have inserts in the end of the pipe to keep it's shape in the joint, but none of the pipework in the caravan has them, do you use them?
@@atlanticcaravansUK I just bought some 12mm inserts for my campervan as they were also not in, but i only assumed they are only required for the hot/red pipes, thinking they get soft and deform with hot water exiting the pipework. Im putting them in all the pipework as my pipework was put in with someone chewing on the pipe end to cut it in the Elddis factory.
@@robellis3817 You still need to have water in the aquaroll, all you are is using the new water you are pumping into the system to push air through the pipes to push the water that is in front of it out.
@@robellis3817no, the water that goes into the hot tank is only a small amount and will not reach the outlet pipe which is situated at the top of the tank, so the ‘new’ water will not enter the pipes, then once the drain down valve is re opened this small amount will again run out.. Any water in the cold system will flow back down through the drain down valve when it is re opened..
Given all the taps are higher than the boiler out pipe, the head of water above the boiler out pipe will drop to the same level as the boiler out pipe when the boiler is drained, physics. Therefore there should be no water in the tap.
Yep, water is at it's largest volume @ 4c, hence ice floats in your g&t and life existes on earth. You've missed the physics point that water finds it's own level, so physics says there is no water in the tap. If the tap is higher than the boiler output the water will drain down from the tap to the same level as the boiler output.
@@jeremybragg9980 I think you’re assuming that there is a direct route for water to travel between the output of the tap, the spout, and the inlet, but there are chambers within the tap where water can be trapped. Allowing the tap to vent alone is not sufficient to remove this trapped water, venting with air from the inlet removes this water. If it was an open pipe, yes.
@@atlanticcaravansUK I'm not assuming anything. If there are "chambers" that are not cleared of water by the water going back down, to the boiler output pipe level they will not be cleared by pushing water/air up through the system either. These "chambers" are clearly open, otherwise they would not fill with water, so when the water freezes it has a route to expand into.
I’m enjoying the robust test of my thought process, however after 30 years of selling countless taps to countless customers in spring, all who swore they drained the caravan down, I can assure you that left to your theory alone, the chances of frost damage is high, completing this extra step will vastly reduce the likelihood of damage. You are of course free to take my advice or not, and I’d add that if you’re confident in it, close the taps to really test it after completing the standard drain down only. The other thing this does is to remove over a pint of water that would otherwise be left in the system going stale.. I’d add that the tap design allows for water to effectively pass one way, but not as much back through it. This is where the water can be trapped, I don’t understand why you think blowing air through the tap through the inlet to the spout will not remove any trapped water that remains in the cartridge?
I use the kit I made up to drain down the pipes as shown in this video:- ruclips.net/video/nqwgd9jd-Vg/видео.html . There's many video's on RUclips showing you how to do it safely. You can of coarse buy a ready made kit for £50-£60 that comes with the how to DVD video, But I just bought an extra water pipe, went do to local tyre garage and they gave me a free valve & jubilee clip, total cost less than £20's for the kit. I am not sure its a good idea to run the caravan pump when it's dry.
Great advice as always - from a man that knows ! Thanks.
Excellent and very helpful. Could be a mini series here based on simple maintenance tips? How to sterilise the water system would be a good one. Cheers.
Yes, listen out to Caravan Radio, got quite a bit going on there..
Ahhhh why didn't I think of that..very good that will be using the external submersible pump, but not submersed in water of course? It will push the water through the system..
Up until now I opened everything up on my last ride home to shake the water out, however I can do both now .. Excellent 👍 thank you😊
No, the pump is in the water, but as the hot water tank is empty, the water going into the tank pushes the air in the tank through the system, but the ‘new’ water going into the tank doesn’t get to reach the outlet pipe and fill the system again. Then you let that run out using the drain down valve.. if you get my drift…
Be careful I have broken an outside pump running without liquid in it.
@@davidsalkeld4473 there is water in the aquaroll.. you don’t run it dry.
Excellent, I didn't think of that, last winter I had the cold water pipes push out of the Y joint in the bathroom, damaging it, I bought a new one and a new longer length of pipe so it wasn't so tight, a question for you, when I was buying the new pipe I noticed that they are supposed to have inserts in the end of the pipe to keep it's shape in the joint, but none of the pipework in the caravan has them, do you use them?
No, that’s only when you go up to 15mm, caravan pipe work is 12mm ..
@@atlanticcaravansUK I just bought some 12mm inserts for my campervan as they were also not in, but i only assumed they are only required for the hot/red pipes, thinking they get soft and deform with hot water exiting the pipework. Im putting them in all the pipework as my pipework was put in with someone chewing on the pipe end to cut it in the Elddis factory.
@@robertoduranos5196 you shouldn’t need them, we have never fitted them and I didn’t know they actually worked with the John guest fittings?
Thanks for this video. Just to check - will this not cause damage to the water pump by running it when it is dry?
It’s not running dry I’ll do another video later to explain it better later..
What about residual water in the bathroom tap which is now closed?
I’m going to re do the old video, to explain it better later, you just do the same with that..
How do you do this if you have no pump in the van but use an outside tank?
@@davidsalkeld4473 just use the submersible pump in the normal way…
@@atlanticcaravansUKbut don’t the Whale pumps fail if allowed to run with no water in the aquaroll?
@@robellis3817 You still need to have water in the aquaroll, all you are is using the new water you are pumping into the system to push air through the pipes to push the water that is in front of it out.
@@atlanticcaravansUK but doesn’t that end up leaving different water in the pipes?
@@robellis3817no, the water that goes into the hot tank is only a small amount and will not reach the outlet pipe which is situated at the top of the tank, so the ‘new’ water will not enter the pipes, then once the drain down valve is re opened this small amount will again run out.. Any water in the cold system will flow back down through the drain down valve when it is re opened..
Given all the taps are higher than the boiler out pipe, the head of water above the boiler out pipe will drop to the same level as the boiler out pipe when the boiler is drained, physics.
Therefore there should be no water in the tap.
Water expands when it freezes this is the problem.. I believe this is also physics.
Yep, water is at it's largest volume @ 4c, hence ice floats in your g&t and life existes on earth.
You've missed the physics point that water finds it's own level, so physics says there is no water in the tap.
If the tap is higher than the boiler output the water will drain down from the tap to the same level as the boiler output.
@@jeremybragg9980 I think you’re assuming that there is a direct route for water to travel between the output of the tap, the spout, and the inlet, but there are chambers within the tap where water can be trapped. Allowing the tap to vent alone is not sufficient to remove this trapped water, venting with air from the inlet removes this water. If it was an open pipe, yes.
@@atlanticcaravansUK I'm not assuming anything. If there are "chambers" that are not cleared of water by the water going back down, to the boiler output pipe level they will not be cleared
by pushing water/air up through the system either. These "chambers" are clearly open, otherwise they would not fill with water, so when the water freezes it has a route to expand into.
I’m enjoying the robust test of my thought process, however after 30 years of selling countless taps to countless customers in spring, all who swore they drained the caravan down, I can assure you that left to your theory alone, the chances of frost damage is high, completing this extra step will vastly reduce the likelihood of damage. You are of course free to take my advice or not, and I’d add that if you’re confident in it, close the taps to really test it after completing the standard drain down only. The other thing this does is to remove over a pint of water that would otherwise be left in the system going stale.. I’d add that the tap design allows for water to effectively pass one way, but not as much back through it. This is where the water can be trapped, I don’t understand why you think blowing air through the tap through the inlet to the spout will not remove any trapped water that remains in the cartridge?
I use the kit I made up to drain down the pipes as shown in this video:- ruclips.net/video/nqwgd9jd-Vg/видео.html . There's many video's on RUclips showing you how to do it safely.
You can of coarse buy a ready made kit for £50-£60 that comes with the how to DVD video, But I just bought an extra water pipe, went do to local tyre garage and they gave me a free valve & jubilee clip, total cost less than £20's for the kit.
I am not sure its a good idea to run the caravan pump when it's dry.
You’re not running the pump dry.. watch the update..