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Trum Crystal Filter Housings - Cheap And Nasty?


Geist

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Am I the only person having trouble with the Truma Crystal filter housing. pump connections?

 

The problem seems to be the 'peg's that are supposed to hold the submersible pump connector in-situ.

 

The lower peg on the original housing fitted to our van became loose, and would no longer hold the pump in tightly, with the result that the connection leaked like a sieve when the pump was in operation.

 

A closer inspection revealed that the 'peg' was pushed into a cheaply moiled 'tube' or 'socket', which had cracked, thus allowing the peg to pull out of the housing instead of holding the pump connector firmly in place.

 

These things happen, no real problem, £37 saw a new one fitted - and it was treated very carefully indeed.

 

All to no avail, because exactly the same thing has happened. The tube for the peg has cracked, and the peg is loose, and the pump leaks. ....

 

I'm loathe to cough up another 37 quid for a plastic moulding that must cost less than 50p to produce - especially as this seems a recurring fault.

 

Anyone else having similar problems with this fitting?

 

Also - does anyone know of another make connector that would fit the hole cut for the Truma Crystal? I'd rather fit a Whale connector if possible (with or without a filter) as I'm confident that there can be nothing else on the market as poorly made as the Truma Crystal housing, and 'anything' will be an improvement - if it will fir the existing hole in the side of the van.

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This sounds like the O ring needs changing on the connection as the small locks dont have anything to do with stopping it leaking just hold the connector in place .

 

 

Dave

Jeep Commander 3. 0 V6 CRD

Isuzu D- Max Utah Auto

Elddis Crusader Storm 2000 Kgs, Unipart Royal Atlas Mover .

 

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This sounds like the O ring needs changing on the connection as the small locks dont have anything to do with stopping it leaking just hold the connector in place .

 

 

Dave

 

 

Thanks for that, hadn't thought of the 'o' ring! - I have two pumps (the original one, which is now 3 years old, and a Reich pump that i bought last year to try and give the flow a bit more oomph) both leak. I don't know what the life expectancy of the 'o' rings are - but it's certainly worth changing them before shelling out yet another 37 quid.

 

I understand that the 'o' ring does the sealing, but the locks must surely serve to hold the connector 'square' in the hole? - thus helping the 'o' ring to do its job?

 

My thought at the moment is to change the 'o' ring (are they a spare part?) and also to take off the fitting and repair the cracked 'socket' that the peg locates into - perhaps some super glue and some sort of clip to sop it opening up when the peg is inserted.

 

Above all, I'd like to swap it for a better quality fitting, but I can't find a direct replacement in the Whale range. I suppose I could fit a Whale connector and just leave the Truma housing in situ, but that would start looking a bit odd.

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Am I the only person having trouble with the Truma Crystal filter housing. pump connections?

 

 

 

 

Just an update for anyone with the same problem (and there must be some because several dealers I've spoken to have mentioned the 'peg' problem)

 

Apparently, the new Truma 'Ultraflow' system is the answer - no locating pegs to break, and a much more robust mechanical coupling for the pipe into the caravan.

 

I've ordered one, so (hopefully) that will solve the problem. I'm just hoping that it's not as cheap 'n' nasty as the 'Crystal' fitting - hence buying it on-line, if it *is* cheap 'n' nasty, then back it can go.

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I'm assuming you mean the mk2 crystal housing? this had a problem with the filter threads cracking through over tightening the filter, but to my knowledge no particular problem with the plug for the pump or the clips.

Infact I somehow over ordered and landed myself with ten sets of clips, that was about 5 years ago and I don't think I've sold one set :unsure:

Personally I fitted and used the mk2 housing for a dozen years, never had any problems with it, never used the clips, found their not needed.

No one as ever before complained to me about cracked holes either?

 

What then I would suspect is causing this problem is a sticking non-return valve, this is in the hose connection stem inside the van.

If this does not open fully it will restrict water entering and the build up of pressure will force the pump connection off.

 

Having said all that, the latest Ultraflo housing is a great improvement and should IMO always be picked over the mk2.

Only downside is how far it sticks out from the van, this not only making the lid vunrable, to my mind it's also butt ulgy :o

 

PS, I see you've ordered an Ultraflo on-line, I hope then it was the 'conversion kit' you ordered? Otherwise you need to buy the 'trigger' connection to convert your pump.

You will though also need an in-line non-return valve to suit the pipe work of your van, these are no longer built in or supplied in the conversion kit, but very much still required!

gary1s.gif

 

Arc Systems are specialist Carver caravan product repairers, committed to providing a comprehensive service as well as spare parts for these popular heaters.

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I'm assuming you mean the mk2 crystal housing? this had a problem with the filter threads cracking through over tightening the filter, but to my knowledge no particular problem with the plug for the pump or the clips.

Infact I somehow over ordered and landed myself with ten sets of clips, that was about 5 years ago and I don't think I've sold one set :unsure:

Personally I fitted and used the mk2 housing for a dozen years, never had any problems with it, never used the clips, found their not needed.

No one as ever before complained to me about cracked holes either?

 

What then I would suspect is causing this problem is a sticking non-return valve, this is in the hose connection stem inside the van.

If this does not open fully it will restrict water entering and the build up of pressure will force the pump connection off.

 

Having said all that, the latest Ultraflo housing is a great improvement and should IMO always be picked over the mk2.

Only downside is how far it sticks out from the van, this not only making the lid vunrable, to my mind it's also butt ulgy :o

 

 

Cheers for that - could I ask you about the respective sizes of the Crystal 2 and Ultraflow housings?

 

I've ordered the conversion kit - which, I assume, is meant to fit the existing hole - a rectangle, measuring 153mm X 100mm

 

However, the template on the . pdf version of the Ultraflow conversion installation manual shows a required hole of 163mm x 108mm overall - with angled corners which make the hole shape vauguely octagonal.

 

If the Truma dimensions are accurate, I don't see how the Ultraflow is going to fit the existing hole without some surgery, and I don't want to get into that.

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All I can say is it fits, I've fitted one directly in the original hole, the only difference is the original screw holes don't line up, but so what, they are still covered by the new housing and new holes gives fresh firm grip for the new screws.

gary1s.gif

 

Arc Systems are specialist Carver caravan product repairers, committed to providing a comprehensive service as well as spare parts for these popular heaters.

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All I can say is it fits, I've fitted one directly in the original hole, the only difference is the original screw holes don't line up, but so what, they are still covered by the new housing and new holes gives fresh firm grip for the new screws.

 

 

Thanks - the . pdf instructions mention the new holes - which, as you point out, are an advantage anyway. I'm glad it's just a straight swap without any further cutting - I can only assume that the 'conversion' kit dimensions differ slightly from the standard Ultraflow unit, although the cutting templates are the same for both versions.

 

Not that it matters! - if it fits, it fits ;)

 

Cheers for your advice

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Well, £$%%&* me!! - I genuinely wouldn't have thought it possible to make a filter housing that was cheaper and nastier than the Crystal - but, fair play to Truma, they've managed it with their 'Aquaflow' abomination!

 

It was horrible! - a plastic moulding worth 99 pence, that has a suggested price of £60, and a street price of around £50!

 

Come on Truma! - I *know* that we caravaners are made of money, and I *know* that the reason that we're born into this world is to make caravan accessory companies rich, but come on! - this is just taking the ^%""!

 

I bet the caravan manufacturers buy them and fit them for less than a tenner - which would give Herr Truma a healthy profit, and which would be *just* about an acceptable price for this bit of plastic junk - but five times, or six times as much as a replacement???

 

 

Nein, mein Herr! - I'll find another way around the problem before I give you 50 quid for this tuppeny plastic moulding!

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Well as long as you don't blame the dealer, at £51 he's made slightly less than a fiver! :(

gary1s.gif

 

Arc Systems are specialist Carver caravan product repairers, committed to providing a comprehensive service as well as spare parts for these popular heaters.

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Well as long as you don't blame the dealer, at £51 he's made slightly less than a fiver! :(

 

 

I've no idea who is making the money on these things - but if that filter housing cost more than 99 pence to produce, I'll eat my caravan! ;)

 

Seriously, I had a bit of a shock when I saw the Aquaflow, I was expecting a much more robust and improved design but, actually, it seemed even flimsier than the Crystal housing - the plastic (sorry, 'ABS') was very brittle, and very thin.

 

I've spent a lot of money on useless accessories over the years, and we all know that one of the Laws of caravanning is that you pay much more to get much less (think of a washing up bowl! - if it's a third of the size of a household one, you pay three times the price) but when I saw that Aquaflow housing I just felt that enough is enough! ;)

 

If they sold them for £10. 00 it would be acceptable for them to be so flimsy - but £50???

 

It's pushed me to check out the solutions that you and Dave suggested, anyway - I'm going to work on the basis that those pegs aren't as important as I supposed, and see if I can get the existing connector to seat more securely in the hole.

 

BTW, I genuinely appreciate the advice given - it's just the price/quality ratio of that plastic moulding that has proven to be the straw that has finally broken this particular Camel's back! Think of it this way - eight of those cheap bits of plastic cost as much as a nice new Toshiba 37" LCD telly!, one hundred and twenty of 'em could get you a brand new car!....... ;)

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Am I the only person having trouble with the Truma Crystal filter housing. pump connections?

.

 

 

 

Success!

 

If necessity is the mother of invention, then the desire not to be swindled by Truma must be a very close relative

 

Peg problem solved by cutting down the broken plastic 'tube' that hold the bottom 'peg', and then screwing a small nylock nut onto the protruding shaft of the peg.

 

Them, a red hot screwdriver to melt and fuse the nylock not and the shank of the peg together.

 

Result? - a perfectly restored housing, which works as well as the day it was installed.

 

Downside? - a few less Bratwurst for Herr Truma. ... ;)

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Success!

 

 

 

 

While I'm glad you have fixed your old housing, no mention of why it possibly happened in the first place and eliminating that?

 

 

I did say clips breaking is a rare problem but their holes are not a known problem? also what might be the reason for yours to be breaking?

 

What I'm getting at is have you fixed the fault? not just the symptom?

gary1s.gif

 

Arc Systems are specialist Carver caravan product repairers, committed to providing a comprehensive service as well as spare parts for these popular heaters.

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While I'm glad you have fixed your old housing, no mention of why it possibly happened in the first place and eliminating that?

 

 

I did say clips breaking is a rare problem but their holes are not a known problem? also what might be the reason for yours to be breaking?

 

What I'm getting at is have you fixed the fault? not just the symptom?

 

 

Hi - and thanks again for the advice about the non-return valve. I also gave the unit a thoroughly good clean, and the valve does seem to be more free.

 

As for the problem with the peg holes - I honestly don't know. After the first unit broke I was particularly careful not to knock or yank the connector when the pegs were engaged, but the second peg tube still broke ;)

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  • 2 months later...

Gary or anyone

Where does the Non Return Valve fit

 

The Crystal 2 inlet on my daughters van has broken off inside the van where the flex hose fits onto

 

When I removed the hose with the broken section of plastic housing, there is a small Non Return Valve fitted inside the broken plastic housing.

 

When I looked at the shelves in the dealers, the Non Return Valve is probably 10mm dia x 60mm long with a thread on one end.

 

If we changed to the Ultraflow, where does this Non Return Valve fit and how, as all there is inside the van is the Flex Hose to the pressure switch

 

Thanks

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