| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cleaning method for an air conditioner that can utilize existing piping without losing long-term reliability in using an HFC-family refrigerant being newly provided. SOLUTION: In piping for connecting the indoor machine of an air conditioner to an outdoor machine, this article is used to eliminate foreign matter remaining inside from one piping port by conveyance from the other by a compressed gas, and is composed of a hydrophilic material.</p> |
