R-600A to 134a

[mark-mcc]

Hi all I have been asked to work on a domestic freezer which no longer cools as good as it did, after checking the system over and pressure tested I found a leak at the discharge at the compressor. Basically I don't have r600a or access to purchase it due to the absence care10 training but I've heard people putting 134 into a 600a system and it working but I want to know the weight of 134 I should but into the freezer when the 600a charge is 34g according to the data plate on the system. When I arrived at the system at the start the compressor temp was 87 Celsius "ouch", still pumps tho.

Cheers

[Click4]

If you are going to work on R600 systems, surely its better to do the care10 training and buy the proper refrigerent as you may use it in future if you get into that kind of work.

after reading this, I looked up care10 and its around £150+Vat if i can remember, so next year I might do that lol so that I can work on other things besides cars.

[mark-mcc]

I don't think £150 cost would be economical as it was a family member who asked me to have a look at there freezer. I usually work on commercial refrigeration plant in the tesco stores and i don't think my company would pay or domestic training lol just wanted to know how much 134 to shove into an isobutane system

[james10]

think i read somewhere that the r600 charge is 30% less than traditional refrigerants

[monkey spanners]

just get some r600, most wholesalers sell it in 600g cans and don't know they aren't supposed to sell it to you...
or look on ebay. just don't blow yourself up or set the street on fire using it.

r600 compressor likely to have mineral oil which in not correct for hfc's like R134a, also looking on a pt chart they are not a good match pressure temperature wise either.

[tonto33]

sell u bottle for tenner and if local mite even show u how to use it lol

[R600A]

Hi

You cant use R600a In a R134a system as the oil in the compressor is different and also the displacement of the compressors are also different.

There is no difference in charging the systems as long as you treat them with the respect they deserve.R600a always runs in a vacuum approx -.450 bar.

Bryan