Compressor system and method of inserting and pulling out bundle of compressor

A method of inserting and pulling out a bundle of a compressor, the method comprising, in a state where a maintenance space shareable for insertion and pullout operations of a bundle of a first compressor having a cylindrical casing and insertion and pullout operations of a bundle of a second compressor having a cylindrical casing is interposed between the bundles and the first compressor and the second compressor are arranged to face each other to cause pullout directions of the respective bundles to be opposite to each other;

• pulling out the bundle of the first compressor or the bundle of the second compressor from the corresponding casing to the maintenance space or inserting the bundle of the first compressor or the bundle of the second compressor into the corresponding casing, while allowing the bundle of the first compressor or the bundle of the second compressor to occupy the maintenance space,
• wherein rails are laid in the maintenance space, the rails being engageable with rollers attached to the bundle of the first compressor when the bundle of the first compressor is inserted into and pulled out from the casing of the first compressor, the rails being engageable with rollers attached to the bundle of the second compressor when the bundle of the second compressor is inserted into and pulled out from the casing of the second compressor.