2200M4JE-DA-iS2-N_2014.04.
Table of Contents
Screw Compressor i-series viii
4.2.2 Purging of Non-Condensable Gases...................................................................4-4
4.2.3 Action for Stopping the Compressor for Long Period of Time.............................4-5
Chapter 5 Maintenance and Inspection
5.1 Precautions for Maintenance and Inspection............................................5-1
5.2 Maintenance and Inspection List................................................................5-2
5.2.1 Daily Management............................................................................................... 5-2
5.2.2 Periodical Inspection............................................................................................5-4
5.2.3 Guidelines for Compressor Overhaul Frequency................................................5-5
5.3 Management of Lubricant ...........................................................................5-6
5.3.1 Lubricant Management Criteria ........................................................................... 5-6
5.3.2 Lubricant Replacement Frequency......................................................................5-6
5.4 Compressor Disassembly Preparation......................................................5-7
5.4.1 Tools for Disassembly .........................................................................................5-7
5.4.2 Replacement Parts..............................................................................................5-8
5.4.3 Refrigerant Gas Treatment.................................................................................. 5-8
5.4.3.1 Valves Used.................................................................................................5-8
5.4.3.2 Refrigerant Gas Recovery...........................................................................5-8
5.4.4 Removing Parts Connected to the Unit............................................................... 5-9
5.4.5 Removing and Lifting the Compressor.............................................................. 5-10
5.4.6 Removing Oil from Compressor........................................................................5-10
5.5 Disassembly and Inspection.....................................................................5-11
5.5.1 Mechanical seal................................................................................................. 5-11
5.5.1.1 Disassembly...............................................................................................5-11
5.5.1.2 Inspection .................................................................................................. 5-12
5.5.2 Bearing Cover....................................................................................................5-13
5.5.2.1 Disassembly..............................................................................................5-13
5.5.2.2 Inspection...................................................................................................5-13
5.5.3 Balance Piston...................................................................................................5-14
5.5.3.1 Disassembly..............................................................................................5-14
5.5.3.2 Inspection .................................................................................................. 5-14
5.5.4 End Cover..........................................................................................................5-14
5.5.5 Thrust Bearings .................................................................................................5-14
5.5.5.1 Disassembly..............................................................................................5-15
5.5.5.2 Inspection .................................................................................................. 5-15
5.5.6 Bearing Head.....................................................................................................5-16
5.5.6.1 Disassembly..............................................................................................5-16
5.5.6.2 Inspection .................................................................................................. 5-16
5.5.7 Rotors ................................................................................................................5-16
5.5.7.1 Disassembly..............................................................................................5-16
5.5.7.2 Inspection .................................................................................................. 5-16
5.5.8 Radial Bearing...................................................................................................5-17
5.5.8.1 Disassembly..............................................................................................5-17
5.5.8.2 Inspection .................................................................................................. 5-17
5.5.9 Suction Strainer and Check Valve.....................................................................5-17
