PRECAUTION PRECAUTIONS FOR REFRIGERANT HFO-1234yf (R1234yf)
(a) Compatibility (1) The parts used in the refrigerant cycle, the compressor oil, etc. of an HFO-1234yf (R1234yf) system are not compatible with a conventional HFC-134a (R134a) system.
(b) HFO-1234yf (R1234yf) Refrigerant (1) Always us