No it doesn't have have a blanking plug, but did you fit an in-line non-return valve in the hose on the other side? it doesn't have a built in valve either and as a replacement for the mk2, you might find it needs one!
Quote: Originally posted by arc systems on 09/8/2009
No it doesn't have have a blanking plug, but did you fit an in-line non-return valve in the hose on the other side? it doesn't have a built in valve either and as a replacement for the mk2, you might find it needs one!
Hello Gary
Our new pageant provence series 7 made its first trip this weekend. Can you tell me if the on board pump should be noisey when working please? I read the handbook but couldn't find anything covering any adjustments.
Advice would be appreciated, I've never had an on board pump before.
Thanks Gary, I am awaiting a Truma Ultraflow conversion kit arriving to replace my Crystal Mk2, so I will have to obtain a one way valve to complete the conversion I assume.
You should have got the kit from me vectralot, I supply a non-return valve in my kits!
Pumps BB should at least not be unduly noisy, my own Whale which at the time allegedly made enough noise to wake the dead?! is near on silent.
Main cause I found is sucking air in with the water, this causes 'cavitation' inside the pump and the result is a 'hammering' noise. Preventing the air getting in should be easy enough.
Next is the pipe work from inlet too pump, I've seen some installations with several elbow joints in as little as a couple of feet.
Each 90deg elbow though adds a restriction equivalent to two feet of pipe, this then is like perhaps 8ft of pipe leading to the pump.
Now the flow of water too the pump is restricted by this excessive length which basically makes the pump work far harder than it need and the result is noise.
My installation uses soft flexible hose in a long sweeping curve, soft makes sure it does not kink and cannot vibrate against anything which will also cause noise.
Finally the Whale comes mounted on thin ply board, my board simply rests on a piece of breathable ground sheet to insulate it from the floor which otherwise would act as a sound board
Only do them as an aside really, I keep being asked for advice on changing, so I give it and then then let them buy the bits from their local dealer presumably the same dealer that should have been offering the advice in the first place?! so I thought I'd cut them out the loop
The Ultraflow, (or mk4 as I call it), is actually a good design in as much as it gets rid of the screw-in filter of the mk1/mk2 and the problem of cracking. They did though omit to fit an NVR but given this was prone to fail, that's probably a good idea as it's easy enough to fit an in-line one
The mk4/Ultraflow fits directly in place of the mk2/mk3 and Truma also supply an adaptor plate so you can swap it for the larger mk1 filter housing.
Quote: Originally posted by arc systems on 09/8/2009
No it doesn't have have a blanking plug, but did you fit an in-line non-return valve in the hose on the other side? it doesn't have a built in valve either and as a replacement for the mk2, you might find it needs one!
Thanks for that. I haven't actually fitted a replacement - it was just that the fitting on our new van was different to our last.
We have an earlier truma pump and I find it awkward to plug in to the compact housing. You think its connected but sometimes when I turn on the tap water leaks from the connection and I have to go and connect it again. Smearing a bit of vegetable oil on the rubber ring helped a bit.
Is the ultraflow much easier to connect and is it worth swapping my compact housing and pump for an ultraflow? Is it a simple enough job?