mycom i160L - Page 8

2203M4JE-MY-iS2-N_2017.04.
Table of Contents
Screw Compressor i-series
vii
2.3.3 Alarm Set Values ................................................................................................. 2-4
2.3.4 Outer Dimensions ................................................................................................ 2-5
2.4 Configuration of Compressor .................................................................. 2-18
2.4.1 Sectional Views ................................................................................................. 2-18
2.4.2 Exploded Views ................................................................................................. 2-24
2.4.3 Parts Configuration Table .................................................................................. 2-26
2.5 Mechanisms .............................................................................................. 2-33
2.5.1 Basics of the Screw Compressor ...................................................................... 2-33
2.5.2 Suction Process ................................................................................................. 2-33
2.5.3 Compression Process ........................................................................................ 2-34
2.5.4 Discharge Process ............................................................................................. 2-34
2.5.5 About Volume Ratio (Vi) .................................................................................... 2-34
2.5.6 Capacity Control Mechanism ............................................................................. 2-36
Chapter 3 Installation
3.1 General Precautions for Installation ......................................................... 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 ............................................................................................................ 3-3
3.2.5.1 Piping Connection ....................................................................................... 3-3
3.2.5.2 Equipment and Devices for Protection of the Compressor ......................... 3-4
3.2.6 Airtightness Test .................................................................................................. 3-4
3.2.7 Lubricating Oil Charge ......................................................................................... 3-4
3.2.7.1 Initial Charge of Lubricating OIL .................................................................. 3-5
3.2.7.2 Additional Charge of Lubricating Oil ............................................................ 3-5
3.2.8 Charge of Refrigerant .......................................................................................... 3-5
3.2.9 Check after Installation ........................................................................................ 3-5
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 Recommended Lubricating Oils .......................................................................... 4-2
4.1.2.1 Recommended Lubricating Oils for Ammonia Refrigerant .......................... 4-2
4.1.2.2 Oils for Systems Using Hydrofluorocarbon (HFC) Refrigerants .................. 4-3
4.1.3 Change of Lubricating Oil Brand ......................................................................... 4-3
4.1.4 Precautions for Handling Lubricating Oil ............................................................. 4-4
4.1.5 Lubricating Oil Management Criteria ................................................................... 4-4
4.1.6 Lubricating Oil Replacement Timing .................................................................... 4-5