mycom 2016LMC

2200LZJE-HO-C6-N_2013.12.
Table of Contents
Compound 2-stage Screw Compressor 2016**C
vii
Chapter 5 Maintenance
5.1 Precautions for Maintenance ...................................................................... 5-1
5.2 Maintenance 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 ................................................ 5-4
5.3 Management of Lubricant ........................................................................... 5-6
5.3.1 Lubricant Management Criteria ........................................................................... 5-6
5.3.2 Lubricant Replacement Frequency ...................................................................... 5-7
5.3.2.1 First system startup ..................................................................................... 5-7
5.3.2.2 During regular operation .............................................................................. 5-7
5.4 Compressor Disassembly Preparation ...................................................... 5-8
5.4.1 Tools for Disassembly and Work Place ............................................................... 5-9
5.4.2 Replacement Parts .............................................................................................. 5-9
5.4.3 Recovering the Refrigerant .................................................................................. 5-9
5.4.4 Removing Parts Connected to the Unit ............................................................. 5-10
5.4.5 Removing and Lifting the Compressor .............................................................. 5-11
5.4.6 Removing Oil from Compressor ........................................................................ 5-11
5.5 Disassembly Sequence ............................................................................. 5-12
5.6 Overhaul ..................................................................................................... 5-14
5.6.1 Mechanical Seal ................................................................................................ 5-15
5.6.1.1 Disassembly .............................................................................................. 5-15
5.6.1.2 Inspection .................................................................................................. 5-16
5.6.2 Unloader Indicator ............................................................................................. 5-18
5.6.2.1 Disassembly .............................................................................................. 5-18
5.6.3 Unloader Cylinder Cover ................................................................................... 5-21
5.6.3.1 Disassembly .............................................................................................. 5-21
5.6.3.2 Inspection .................................................................................................. 5-22
5.6.4 Unloader Piston and Unloader Cylinder ............................................................ 5-22
5.6.4.1 Disassembly .............................................................................................. 5-22
5.6.4.2 Inspection .................................................................................................. 5-23
5.6.5 Bearing Cover .................................................................................................... 5-24
5.6.5.1 Disassembly .............................................................................................. 5-24
5.6.6 Separating High-stage and Low-stage .............................................................. 5-25
5.6.6.1 Disassembly .............................................................................................. 5-25
5.6.7 High-stage Side Gear Coupling ......................................................................... 5-25
5.6.7.1 Disassembly .............................................................................................. 5-25
5.6.7.2 Inspection .................................................................................................. 5-25
5.6.8 High-stage Thrust Bearings ............................................................................... 5-26
5.6.8.1 Disassembly .............................................................................................. 5-26
5.6.8.2 Inspection .................................................................................................. 5-27
5.6.9 Balance Piston Cover ........................................................................................ 5-28
5.6.10 Balance Piston ................................................................................................... 5-28
5.6.10.1 Disassembly .............................................................................................. 5-28
5.6.10.2 Inspection .................................................................................................. 5-29