Emerson Vilter VSS - Page 8

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VSS/VSR/VSM/VSH/VSSH Compressor • Installation, Operation and Service Manual • Emerson • 35391S
Table of Contents
Section Title Page Number
Section 4 • Operation
Notice on Using Non-Vilter Oils .................................................................................................................. 4-1
Operation .................................................................................................................................................. 4-1
Control System ......................................................................................................................................... 4-1
Starting, Stopping and Restarting The Compressor ........................................................................ 4-1
Emergency Shutdown .................................................................................................................... 4-2
Capacity and Volume Ration Control through Slide Valve Actuators ............................................... 4-2
Slide Valve Actuator Operation .................................................................................................................. 4-3
Calibrate Slide Valve Actuators (For Units Using Vission20/20™) ................................................................ 4-4
Calibrate Slide Valve Actuators (For Units Using Compact Logix PLC) ........................................................ 4-10
Compressor Control with Vission20/20™ Micro-Controller (No Slide Operation) ...................................... 4-15
Suction Equalizing Line Setup - For VSS/VSM Compressors ....................................................................... 4-16
Stop/Check Valve Operation .................................................................................................................... 4-17
Section 5 • Maintenance/Service
Maintenance and Service Schedule - For VSS/VSM Unit Only ...................................................................... 5-1
Maintenance and Service Schedule - For VSH/VSSH Unit Only..................................................................... 5-2
Preventive Maintenance, Checks and Services ............................................................................................ 5-4
Daily...... ......................................................................................................................................... 5-4
Weekly ........................................................................................................................................... 5-4
Monthly ......................................................................................................................................... 5-4
Trimonthly ..................................................................................................................................... 5-4
Annually ......................................................................................................................................... 5-4
Compressor Unit Isolation For Maintenance/Service (Compressors With Slide Valves) ................................ 5-5
Recommendations When Servicing (Compressors Without Slide Valves) ................................................... 5-6
Preparation of Unit For Servicing ................................................................................................................ 5-6
Compressor Unit Leak Check After Servicing .............................................................................................. 5-7
Oil Sampling .............................................................................................................................................. 5-7
Recommendations ......................................................................................................................... 5-7
Installation of The Oil Sampler Valve ............................................................................................... 5-8
Pre-Sampling ................................................................................................................................. 5-8
Sampling Procedure ....................................................................................................................... 5-8
Oil Sample Analysis Report ........................................................................................................... 5-10
Compressor Replacement ........................................................................................................................ 5-11
Removal ....................................................................................................................................... 5-11
Installation ................................................................................................................................... 5-12
Compressor Inspection ............................................................................................................................ 5-13
Compressor Shaft Bearing Clearance Inspections ......................................................................... 5-13
Determine Maximum Applied Force.................................................................................. 5-13
Main Rotor Bearing Axial Clearance Inspection .................................................................. 5-13
Main Rotor Bearing Radial Clearance Inspection ................................................................ 5-14
Gaterotor Bearing Inspection ....................................................................................................... 5-15
Gaterotor Inspection .................................................................................................................... 5-16
A) Gaterotor - Main Housing Shelf Clearance ..................................................................... 5-16
B) Gaterotor Float Measurement ....................................................................................... 5-17
C) Gaterotor Backlash Inspection ...................................................................................... 5-18
Important Notes ............................................................................................................... 5-19
Additional Inspections .................................................................................................................. 5-20
Post Inspection............................................................................................................................. 5-20
Gaterotor Assembly Replacement
(All Compressors Except VSM 301-701 and VSM 97-127 Compressors) .................................................... 5-20
Removal ....................................................................................................................................... 5-20
Installation ................................................................................................................................... 5-21