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Thread: Change from R22 to R404A
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10-11-2011, 06:54 PM #1
Change from R22 to R404A
Guys,
Can across a client that wish to change centralina from R22 to R404A.What should I start with.
I thought of compressor oil change( of three ) from POE to ??? suggestions please.
Compressors are Bitzer.
Liquid line cartidge filer core.
Expansion valves are Danfoss TXE5.Liquid line entry to is flare type,but outpu to evp is brazed.Should I consider replacing only the orofice to a specified type ?
The pipes after reclaiming all the refrigerant needs to be cleaned.What sould I use as a cleaning agent ?
My problem is that this centralina feed 3 upright freezers and another three open type freezers.Client is only allowing a day,probably a public holiday to carry all,which I am seesing impossible.Any views ?