replacent of R-11 to R-123

[qasim2906]

Dear all kindly help me.. i have one carrier centrifugal chiller model19DK78405CQ with refrigerant of R-11..now r-11 is not available in the market so my question is this can i replace refrigerant with R-123... if yes so please guide me what things i have to change more such as compressor oil..expention device and other control device..

[yorkman_gr]

Actually the 123 is the replacement for 11 but before you do this is better to contact the manufacturing company and ask about the capacity of your chiller using 123 and one more critical issue R123 is not healthy if you do so you have to read very good the measures and safetys you have to take when you work with this ***** and also ventilation issues inside the room the chiller is working
best of luck