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Dear members,
I'm new to this, and I've a small question that I faces on my daily work..
I know that R417a substitutes R22 with some loss of performance of course at about 5-10% , but my question is: on an equipment running with R22, can I just add R417a ontop of the existing R22 (leakage problem), OR should I need to empty the equipment first and fill it with R417a completely?
please advise!!
Urgent
You need to empty R22 and replace with R417a.
Thank you for your answer, I wish it was just adding over, what a huge work to do. (to empty 190 Split system units)...
Manufacturers guidelines for retrofit here...
http://bit.ly/2sfiqzp
If all the split systems are R22 then they are a very old model of equipment. As you just want to add a drop in refrigerant, I feel you are going down the wrong route here!Quote:
Originally Posted by spclim
You should rather be speaking to your client about a replacement program for the superceded equipment. Leave the equipment running and build a budget replacement program over the next 5 years for example with replacing units with new. also have a failure budget what increases with each year depending on failure rates.
Putting a new refrigerant in old equipment is false economy, working R22 systems can be left operational. Trying to retrofit refrigerant on old systems will increase their failure rate. I would hazard a guess that a lot of the electronics and hardware components will have been superceded and no longer easily available.
My advise is to approach a single manufacturer and in conjuction with the client approval agree a replacement program for their equipment and the manufacturer will be more than happy to offer good price support if not find another manufacturer.
Thank you so much for your suggestions, I'll try to convince my client to do that...