Quote:
Originally Posted by NeilTheCop
Need some advice.
I fitted a Goodman 2 ton AC unit last year. Filled the system with nitrogen before brazing with oxy-acetylene and a 15% silver filler rod. Pulled a vacuum with a good vacuum pump overnight, held at 5 Pascals for another 24 hours. Using subcooling (TVX fitted) I charged the system with R410A and it worked wonderfully.
Checking it out yesterday and I found compressor oil on the low pressure line where I brazed it to the condenser unit, so I have a refrigerant leak 
Now the question.
Can I evacuate the system, fill it with nitrogen and simply re-braze the leaking fitting, or will the oil that will undoubtedly be present in the fitting be a problem requiring that I un-braze, solvent clean and re-braze?  |
The second option is prudent, and may never cause trouble again. Worth the extra time to remove all doubt. A visiting tech on a service call would probably just pull the refrigerant back into the outdoor unit, shut off the valves, purge with nitro and re-braze. This option might also be fixed forever. It's your time, not his. Depends on your confidence or gambler factor.