Air Con recharge

[neilrenault]

Hi

Had the air con recharged at dreaded kwik fit. Held gas for 2 days then lost it. They said they would do it again for free.

Question is, does the whole front and rear system complicate things? I believe its close to 950g's of gas required and some oil. PErhaps if I quote these numbers to them it might help them do a better job? They don't record this data evidently.

Failing that its a leak in the system i would presume, but I'm no A/C expert to know whether a standard leak test may (or may not pick up) ?

Many Thanks,
Neil

[g8dhe]

There are varied reports regarding level of training and expertise from the fast garage locations!
You might do better to find a mobile air con mechanic for your area, maybe a bit more expensive, but they seem a little more on the ball and reliable than some others!

[cmm303]

Given that it appears to have lost pressure it would be irresponsible (legal?) to simply refill and risk more gas getting into the atmosphere.

I'm no a/c expert but did a lot of asking around when I had mine done and I believe the process should be:
Empty current gas/oil and measure. Confirms how low on gas it is.
Vacuum test. Not guaranteed that the system won't leak under pressure, but it's a cheap non-harmful test.
Refill. If leak suspected include a dye to help subsequent detection.
Run and Check for leaks (a/c guy kept mine for 4 hours)

[Bongolia]

Assuming this is not an electrical issue.
The length of time you say your system held gas for would indicate a easily detectable leak,providing it was re gassed correctly.
Ideally the fast fit should have carried out both a vacuum and a nitrogen pressure test. Some will only carry out a nitrogen pressure test if asked.
On refill a UV dye is normally added to aid detection of any future leakage.
Most modern automatic machines do keep a record of the gas used and extracted and some give print outs too.
And no the additional unit should not be a factor.
If you search through my previous posts you will get an outline of the generic correct procedure.
Alternatively get it to a competent garage as per the other posters.