What is a rotary screw air compressor maintenance manual?

This document is a maintenance manual and parts list for rotary screw air compressors that provides safety instructions and guidelines for installation, operation, and maintenance. It outlines important safety precautions regarding working with compressed air and electricity.

Do you need a disassembly for screw air-end?

DISASSEMBLY FOR AIR END maintenance guide. Therefore, in order to avoid confusion, all covers and casings must be marked with a disassembly. This service manual has been complied for the overhauling work of screw air-end, model CHSA-20S30S. This air-end must be brought into the workshop. After pumping down or purging compressed air

How to disassemble a compressor?

If it is possible, completely empty the compressor of the pumped liquid. Disassembly is carried out by following the indications given on tab. 1 and 2, which show, on the line of the compressor concerned, the sequence and the numeric amount of the details to be disassembled. In order to extract the bearing housings, use an adequate puller.

How to lubricate a disassembled bearing?

For the maintenance of bearings that have been disassembled and can still be used, it is necessary to remove the old grease and dirt in the interstices (if possible, also from the seal rings), then fill with new lubricating grease. The lubricant type used by us is type "EP 3", grease with temperature limits of use of -30°C to +140°C.

What is a screw compressor?

2. OVERALL CONSTRUCTION The screw compressor is a sort of rotary positive displacement compressor, and a machine in which successive volumes of gas are confined within a closed space form by two rotors and casing, and elevated to a higher pressure as the volume of the closed space is decreased by rotation of rotors.

How do you remove a compressor from a baseplate?

remove the compressor from the baseplate. The compressors are manufactured in such a manner as to make possible the replacement of the mechanical seals and of the bearings without disassembly the compressor completely, but only by acting on the bearing housings. If it is possible, completely empty the compressor of the pumped liquid.