Purging method, apparatus to be purged and purging apparatus

Abstract

Disclosed is a purging apparatus for conducting an air purge required when an equipment such as a split type air conditioner is installed or repaired, and to a to-be purged apparatus and a purging method: a to-be purged apparatus having a to-be purged room with two or more valve openings capable of connecting to a main circuit or to a circuit other than said main circuit; and a purging apparatus having a replacing gas container into which a replacing gas to be exchanged for a to-be purged gas is previously charged and a gas collecting container for collecting gas including said to-be purged gas, one of said valve openings of said to-be purged room and said exchanger gas container can be connected with each other, and the other valve opening of said to-be purged room and said gas collecting container can be connected with each other; said method comprising the steps of: sending said exchanger gas in said exchanger gas container, thereby pushing out said to-be purged gas in said to-be purged apparatus; and collecting said to-be purged gas into said gas collecting container.