| 摘要 |
PROBLEM TO BE SOLVED: To convert an existing refrigerating cycle device into a refrigerating cycle device using a fresh refrigerant as an existing refrigerating piping is utilized, in an existing refrigerating cycle device. SOLUTION: In an existing refrigerating cycle device, a heat source machine A and an indoor machine B are newly exchanged and a means 13 to capture a foreign matter from a refrigerant flowing through a connection piping is situated in a refrigerant piping on the heat source machine side without exchanging connection pipings C and D connected to the heat source machine A and the indoor machine B. Or, a bypass passage is situated at the refrigerant piping on the heat source machine A side and a foreign matter capturing means is arranged in the bypass passage. Or, other bypass passage is provided so as to separate refrigerator oil in the refrigerant. The heat source machine A and the indoor machine B are exchanged and after washing operation is carried out, ordinary operation is executed.
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