mycom UD Series User Manual

Table of Contents
UD-series Screw Compressors
vii
2.4.5 Shaft Seal ......................................................................................................... 2-17
2.4.6 Capacity Control ............................................................................................... 2-17
2.4.7 Oil Supply Route ............................................................................................... 2-17
Chapter 3 Installation
3.1 General Installation Precautions ............................................................... 3-1
3.2 Installation Works....................................................................................... 3-1
3.2.1 Unpacking ........................................................................................................... 3-1
3.2.2 Storage ............................................................................................................... 3-1
3.2.3 Transportation ..................................................................................................... 3-1
3.2.4 Preparation for Installation .................................................................................. 3-3
3.2.5 Installation ........................................................................................................... 3-7
3.2.6 Airtightness Test ................................................................................................. 3-9
3.2.7 Vacuuming .......................................................................................................... 3-9
3.2.8 Lubricating Oil Charge ........................................................................................ 3-9
3.2.9 Charge of Refrigerant ......................................................................................... 3-9
3.2.10 Checkout after Installation .......................................................................................... 3-9
Chapter 4 Compressor and Package Unit Operation
4.1 Lubricating Oil (Refrigerant Oil) ................................................................ 4-1
4.1.1 Precautions for Selecting the Lubricating Oil ...................................................... 4-1
4.1.2 Change of Lubricating Oil Brand......................................................................... 4-2
4.1.3 Precautions for Handling lubricating Oil ............................................................. 4-2
4.1.4 Lubricating Oil Control Criteria ............................................................................ 4-3
4.1.5 Lubricating Oil Replacement Timing ................................................................... 4-4
4.2 Precautions for Operation ......................................................................... 4-5
4.2.1 Prevention of Liquid Flow-back Operation .......................................................... 4-5
4.2.2 Purging of Non Condensable Gases .................................................................. 4-5
4.3 When Stopping the Compressor for a Long Time .................................... 4-6
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

mycom UD Series Specifications

General

Brand	mycom
Model	UD Series
Category	Air Compressor
Language	English