| 摘要 |
<p>To provide a method of cleaning an air conditioner which, when using carbon dioxide as a working refrigerant, reduces the quantity of remaining impurities without having to perform vacuuming. A method of cleaning an air conditioner (1) where carbon dioxide is utilized as a working refrigerant is disposed with three steps. In a charging step (S10), a refrigeration cycle is charged with carbon dioxide. In a venting step (S30), a charging target with which the refrigeration cycle is charged is vented after the charging step (S10). In a repeating step (S40), when the charging step (S10) and the venting step (S30) configure a unit operation, the unit operation is performed at least one time or more.</p> |
