Filter Dryers - http://www.hvacmechanic.com/ Forums

Original message

scuba steve

24.58.94.179

"Filter Dryers" , posted Tue 16 Sep 20:12

When recovering refrigerant from a unit should you change the filter dryer on your recovery machine when you come across differant refrigerants such as 134-a or 404-a ?

Stephan Miklajcyk

Replies:

UnionHvac803

68.204.196.30

"Re(1):Filter Dryers" , posted Fri 19 Sep 20:05

This is a Passage From My EPA Section 608 Manual "Technicians working with multiple refrigerants, before recovering/recycling a different refrigerant, MUST purge the recovery/recycle equipment by recovering as much of the first refrigerant as possible, change the filter and evacuate. There is one exception to this rule. Technicians working with R-134a Must Provide a special set of hoses, guages, vacuun pump, recovery or recovery/ recycling machine and oil containers to be used with R-134a only" hope that helps

Jojo98

68.60.207.210

"Re(1):Filter Dryers" , posted Tue 16 Sep 22:20

If you plan on reusing the reclaimed refrigerant, then yes. Especially if you are changing from POE to mineral oils type refrigerants.