mycom 200VMD User Manual

2205Q2JE-HO-S6-N_2020.01.
Table of Contents
SCV-series Screw Compressors
viii
4.2.3 Change of Lubricating Oil Brand......................................................................... 4-8
4.2.4 Precautions for Handling lubricating Oil ............................................................. 4-8
4.2.4.1 Precautions for Handling Polyalkylene Glycols (PAG)................................ 4-9
4.2.4.2 Precautions for Handling Polyolesters (POE) Oil ........................................ 4-9
4.2.5 Lubricating Oil Control Criteria ............................................................................ 4-9
4.2.6 Lubricating Oil Replacement Timing ................................................................. 4-10
4.2.6.1 After Starting the Initial Operation ............................................................. 4-10
4.2.6.2 During Normal Operation .......................................................................... 4-10
4.3 Precautions for Operation ....................................................................... 4-11
4.3.1 Prevention of Liquid Flow-back Operation ........................................................ 4-11
4.3.2 Purging of Non Condensable Gases ................................................................ 4-11
4.4 When Stopping the Compressor for a Long Time .................................. 4-12
Chapter 5 Maintenance and Inspection
5.1 Precautions for Maintenance and Inspection ........................................... 5-1
5.2 Maintenance and Inspection List .............................................................. 5-3
5.2.1 Daily Management .............................................................................................. 5-3
5.2.2 Periodic Inspection ............................................................................................. 5-5
5.2.3 Guidelines for the Timing of Compressor Overhaul ........................................... 5-6
5.3 Compressor Disassembly Preparation ..................................................... 5-7
5.3.1 Disassembly Tools and Workplace .................................................................... 5-7
5.3.2 Replacement Parts ............................................................................................. 5-8
5.3.3 Refrigerant Gas Recovery ................................................................................ 5-10
5.3.4 Removal of Connections to the Unit ................................................................. 5-10
5.3.5 Removal of the Compressor from Base Flame ................................................ 5-12
5.3.6 Compressor Disassembly Order....................................................................... 5-13
5.4 Disassembly and Inspection ................................................................... 5-14
5.4.1 Unloader Indicator Block ................................................................................... 5-14
5.4.1.1 Disassembly ............................................................................................ 5-15
5.4.1.2 Inspection .................................................................................................. 5-16
5.4.2 Shaft Seal Block................................................................................................ 5-17
5.4.2.1 Disassembly ............................................................................................ 5-17
5.4.2.2 Inspection .................................................................................................. 5-18
5.4.3 Unloader Cover ................................................................................................. 5-19
5.4.3.1 Disassembly ............................................................................................ 5-19
5.4.3.2 Inspection .................................................................................................. 5-20
5.4.4 Unloader Cylinder and Balance Piston Cover .................................................. 5-21
5.4.4.1 Disassembly ............................................................................................ 5-21
5.4.4.2 Inspection .................................................................................................. 5-22
5.4.5 Balance Piston Block ........................................................................................ 5-23
5.4.5.1 Disassembly ............................................................................................ 5-23
5.4.5.2 Inspection .................................................................................................. 5-24
5.4.6 Bearing Cover ................................................................................................... 5-25
5.4.6.1 Disassembly ............................................................................................ 5-25
5.4.6.2 Inspection .................................................................................................. 5-25

mycom 200VMD Specifications

General

Brand	mycom
Model	200VMD
Category	Air Compressor
Language	English