Leak testing with shop air

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robmaxfli
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Leak testing with shop air

Postby robmaxfli » Thu Jul 27, 2017 10:52 am

Its an empty R12 system with Mineral Oil and UVDye installed - but I don't have access to Nitrogen - so I'd like to be able to pressurize with normal shop air. I know air 's got moisture in it but I have another Accumulator that I can put on (and ruin) in the process of leak testing. I can put the new Accumulator back on after I find the leak ...
are there any other good reasons not to use compressor air in this situation?
Also, can I add R134 and pressurize it with the shop air.

thanks
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Tim
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Re: Leak testing with shop air

Postby Tim » Thu Jul 27, 2017 11:19 am

Use some R134a to place pressure in the system, do not run system. No shop air!
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robmaxfli
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Re: Leak testing with shop air

Postby robmaxfli » Thu Jul 27, 2017 1:19 pm

I don't have a sniffer so I was looking to use soap and water. would this method create enough pressure to use S+W?
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Tim
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Re: Leak testing with shop air

Postby Tim » Thu Jul 27, 2017 1:29 pm

robmaxfli wrote:I don't have a sniffer so I was looking to use soap and water. would this method create enough pressure to use S+W?


Depends on the size of the leak.
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Dougflas
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Re: Leak testing with shop air

Postby Dougflas » Thu Jul 27, 2017 9:11 pm

Do not use soap and water. You will get better results using Big Blue or Snoop.

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