2205B0JE-DA-J-N_2014.05.
Table of Contents
Screw Compressor J-series
vii
4.2.4.2 Precautions for Handling Polyolester (POE) Oil .......................................... 4-5
4.3 Precautions for Operation ........................................................................... 4-6
4.3.1
Prevention of Liquid Return (Liquid Backflow) Operation................................. 4-6
4.3.2
Purging of Non-condensable Gases................................................................. 4-6
4.4 Action for Stopping the Compressor for Long Period of Time ............... 4-7
5
Maintenance and Inspection
5.1 Precautions for Maintenance and Inspection ............................................ 5-1
5.2 Maintenance
List
..........................................................................................
5-2
5.2.1 Daily
Management ............................................................................................ 5-2
5.2.2 Periodical
Inspection......................................................................................... 5-5
5.2.3
Guidelines for Compressor Overhaul Frequency ............................................. 5-6
5.2.4
Replacement Parts of the Compressor in Overhauling .................................... 5-7
5.3 Management of Lubricant ......................................................................... 5-18
5.3.1 Lubricant
Management Standard ................................................................... 5-18
5.3.2
Replacement Interval for Lubricant ................................................................. 5-19
5.3.2.1 First
system startup ................................................................................... 5-19
5.3.2.2 During
normal operation ............................................................................ 5-19
5.4 Disassembly and Assembly of the Compressor ..................................... 5-20
5.4.1
Tools for Disassembly and Work Place .......................................................... 5-20
5.4.2 Replacement Parts ......................................................................................... 5-20
5.4.3 Recovering
the
Refrigerant ............................................................................. 5-20
5.4.4 Removing
the
Compressor ............................................................................. 5-21
5.4.5
Removing Oil from Inside the Compressor .................................................... 5-22
5.4.6 Common
Work Items ...................................................................................... 5-23
5.4.7 Vi
Position
Sensor .......................................................................................... 5-25
5.4.7.1 Common Precautions for Removal/Installation ......................................... 5-26
5.4.7.2 Precautions
for Removal ........................................................................... 5-26
5.4.7.3 Precautions
for
Installation ........................................................................ 5-26
5.4.8 Seal
Cover ...................................................................................................... 5-27
5.4.8.1 Common Precautions for Removal/Installation ......................................... 5-29
5.4.8.2 Precautions
for Removal ........................................................................... 5-29
5.4.8.3 Precautions
for
Installation ........................................................................ 5-30
5.4.9 Bearing
Cover ................................................................................................. 5-31
5.4.9.1 Common Precautions for Removal/Installation ......................................... 5-32
5.4.9.2 Precautions
for Removal ........................................................................... 5-32
5.4.9.3 Precautions
for
Installation ........................................................................ 5-33
5.4.10 Unloader
Indicator/Capacity Control Solenoid Valve ..................................... 5-34
5.4.10.1 Precautions for Removal ........................................................................... 5-35
5.4.10.2 Precautions for Installation ........................................................................ 5-35
5.4.11 Unloader
Cover
............................................................................................... 5-36
5.4.11.1 Common Precautions for Removal/Installation ......................................... 5-38
5.4.11.2 Precautions for Removal ........................................................................... 5-38
5.4.11.3 Precautions for Installation ........................................................................ 5-39
5.4.12 Unloader
Cylinder ........................................................................................... 5-42
5.4.12.1 Common Precautions for Removal/Installation ......................................... 5-43
5.4.12.2 Precautions for Removal ........................................................................... 5-43