I have a Mini Split Airconditioning Unit and I found a leak at the flaring where my Suction Line comes the Condenser. How can I fix the flare. Must I isolate freon first somewhere in the system so as to be...
There is seldom a means by which the refrigerant can be isolated in this type of system. Moveover, since the system has had a leak, the refrigerant in the system is no longer usable. It is made of HFC-125, HFC-32 and HFC-134a in specific proportions. When a leak occurs, these components will leak at separate rates and the remaining refrigerant (if any is left) is no longer capable of doing the work of a virgin refrigerant.
Refrigeration flare fittings are 45° and are made with special tools. While there are 'washers' that can be inserted into the fitting when it's exposed, they are not that effective all the time. Remember that the pressure at the condenser part of the system can well exceed 300 psig.
The refrigerant, Genetron 407C, is the replacement for HFC-22. It has no 'replacement' per se.
It's my opinion that this is an issue for a reputable HVAC technician, and not a homeowner. To do the job properly, you would need a new filter/drier, flaring tool and torch if the line is not long enough for it to be re-flared and reconnected, vacuum pump and virgin refrigerant. I would bet that the location of the leak is such that the system is all but flat at this time, and you need a precisely measured amount of refrigerant to re-charge the system.
If you've not yet done so, TURN THE SYSTEM OFF to protect the compressor from damage.
Jun 28, 2011 |
Heating & Cooling