Oily residue in gas pipes.......

Post by **toolsntat** » 05 Oct 2008, 21:09

Does anyone else have any experience of an oily liquid building up in there gas pipes and appliances in particular into the fridge control valve??

Spoke to a man at Calor Gas about this once and he said theres nowt added to the gas....

Post by **Mocki** » 05 Oct 2008, 21:53

dunno about nowt added to the gas, but it is almost definately oil from the refilling of the bottles...... there should be a filter in the end of the reulator to catch anything nasty tho....... well there is in the calour regulators i have here, a meshything

LPG roadfuel has a certain amount of sticky oilness in it, which shows itself around the carb ........

Post by **toolsntat** » 05 Oct 2008, 22:53

Yes got one of them gauze bit in the regulator as well and while trying to sort fridge problem found another little filter in the tube before the valve...
Hooked it up to the compressor and blew it out...

[IMG:800:600]http://i34.photobucket.com/albums/d128/ ... t08039.jpg[/img]

[IMG:800:600]http://i34.photobucket.com/albums/d128/ ... t08041.jpg[/img]

Should these be replaced as in some sort of service schedule because even after cleaning that and blowing out the feed pipe the fridge flame is still very weak and won`t set the thermocouple??

Post by **Mocki** » 05 Oct 2008, 23:08

have you tried washing them with thinners or simular ( after making sure it wont hurt any plastics tht may be on the filter frame)

dont think they would be changed in a service, just cleaned.....

you could test to see if the filters are the cause by leaving them out , just for a test, possibly if you can reassemble without them....... (You could use a different regulator to rule out the filter in yor regulator,)

my dometic fridge had a simular prob, turned out to be a minute spec of grit in the disc that they call a jet these days........ seriously small , like the size a dot made by a biro if you let it fall tween your fingers onto a white paper a inch below......microscopic......

Post by **toolsntat** » 05 Oct 2008, 23:38

Must say the filter is only like a fag filter(but more robust)so washing with some thinner ish stuff could work..
Will try it without but may not have time before this weekend of fun and the jet was one thing I wish I had stripped out now, but it was dark by the pipe blowing stage of proceedings so gave up

Could you tell me the make of pen and grade of paper so I know what size the jet should be by doing my own "pen dot drop"

Cheers

Post by **HarryMann** » 05 Oct 2008, 23:45

You sure that's not some sort of anti-flashback device... bronze mesh ?

Post by **toolsntat** » 06 Oct 2008, 00:10

HarryMann wrote:You sure that's not some sort of anti-flashback device... bronze mesh ?

Not sure but its some sort of plastic and I would refit/renew after diagnosis...

Post by **Tex Ritter** » 06 Oct 2008, 22:00

I had problem with the old 2 way fridge in me van. Stripped out the armoured hose and found a load of 'waxy' substance blocking the pipe. It also had the 'fag type filter' fitted to the gas control valve.

I rectified the problem by binning the fridge and fitting a 3 way type, with new copper piping throughout, and a gas distribution manifold.

I think they are just fag filters in the valve, the metal mesh is part of the regulator.

Post by **Mocki** » 06 Oct 2008, 22:05

bic biro and white paper!!