Emerson VSG Installation Manual Page 75
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VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391STG
Section 5 • Maintenance/Service
alignments. Loosen motor mounting nuts to add
shims or to adjust alignments as required.
33. Install coupling guard.
Drive Coupling (Form-Flex BPU)
Center Member and Hub Removal
To remove coupling assembly, proceed with the follow-
ing steps:
WARNING
At shutdown, open any other valves that may trap
liquids to prevent serious injury and/or damage to
equipment.
WARNING
Follow local lockout/tagout procedure. Failure to
comply may result in serious injury, death and/or
damage to equipment.
NOTE
Drive coupling type and size can be determined
by the information on the compressor nameplate
when ordering; Order Number and Compressor
Model Number.
1. Shut down the compressor unit, refer to Stopping/
Restarting procedure in Section 4.
2. Turn disconnect switches to the OFF position for
the compressor unit and oil pump motor starter, if
equipped.
3. Allow compressor, motor and surrounding compo-
nents to cool prior to servicing.
4. Remove coupling guard.
5. Remove lock nuts and bolts securing disc pack to
hub on compressor shaft.
6. If additional room is required to remove the center
member, loosen clamping bolts on straight bore
hub(s).
7. Move straight bore hub on shaft as required to al-
low center member removal.
8. Remove lock nuts and bolts securing disc pack to
hub on motor shaft. Remove center member.
9. For straight bore hubs, remove clamping bolts and
hub from shaft.
10. For tapered bore hubs, remove bolt, lock washers,
large washer and hub from shaft.
Drive Coupling (Type C Sure-Flex)
Replacement
Drive couplings that are the Type C Sure-Flex type, are
always installed with a C-fl ange between the compres-
sor and motor. The coupling assembly alignments are
built into the design and therefore, should not require
alignment.
NOTE
Drive coupling type and size can be determined
by the information on the compressor nameplate
when ordering; Order Number and Compressor
Model Number.
REMOVAL
To remove Type C Sure-Flex coupling, proceed with the
following steps:
WARNING
At shutdown, open any other valves that may trap
liquids to prevent serious injury and/or damage to
equipment.
WARNING
Follow local lockout/tagout procedure. Failure to
comply may result in serious injury, death and/or
damage to equipment.
1. Shut down the compressor unit, refer to Stopping/
Restarting procedure in Section 4.
2. Turn disconnect switches to the OFF position for
the compressor unit and oil pump motor starter, if
equipped.
3. Allow compressor, motor and surrounding compo-
nents to cool prior to servicing.
4. Remove C-fl ange access cover.
NOTE
Mark locations of hubs prior to removal.
5. Loosen set screw in motor hub securing key in
keyway.
6. Loosen clamping bolts securing hub to motor shaft.
7. Pry hub up motor shaft for space to remove cou-
pling sleeve.
8. Remove coupling sleeve from hub.
9. Remove hub and key from motor shaft.
10. Loosen set screw in compressor hub securing key
in keyway.
11. Loosen clamping bolts securing hub from
- VSG/VSSG compressor unit 1
- Important Message 4
- Table of Contents 5
- List of Tables and Figures 8
- Blank / TOC 10
- How To Use This Manual 11
- System Unit Identifi cation 13
- Symbol Identifi cation 19
- Line Type Designations 20
- Valve and Instrument Tagging 21
- 101-V-300 21
- Pipe Line Data Identifi cation 22
- Gas Flow 23
- Oil Life and Oil Flow 23
- Control System 24
- RTDs and Pressure Transducers 24
- Delivery Inspection 25
- Section 3 • Installation 25
- Storage or Installation 27
- Recommended On-site Tools 27
- Long Term Storage Log 28
- Foundation 29
- Foundation Materials 29
- Building the Foundation 29
- Compressor Unit Installation 30
- Leveling and Grouting 31
- Common Area 36
- Initial Oil Charging 40
- Using Non -Vilter Oils 40
- Unit Oil Charging and Priming 40
- Pressure Testing 40
- View Rotate 180° 41
- (Initial Oil Charging) 44
- Pre Start-Up 46
- Pre Start-Up Checklist 46
- Start-Up 48
- Section 4 • Operation 49
- Operation 49
- Oil Inspection 49
- Dual Oil Filters 49
- Mixing Valve) Operation 56
- Purging with Dry Nitrogen 57
- View Rotate 90° 58
- Purging with Dry Gas 59
- Maintaining Proper Operation 64
- Maintenance/Service 64
- Compressor Unit Leak Check 65
- Oil System Components 66
- Oil Sampling 66
- Oil Draining 68
- Oil Filter Replacement 68
- Coalescing Filter Replacement 70
- Oil Pump Strainer 71
- Installation 72
- Alignment 73
- Specifi cations 74
- Center Member and Hub Removal 75
- Replacement 75
- Screw Torque Specifi cations 76
- Compressor Replacement 77
- Model 1551-2101 Shown 79
- Inspections 82
- Bearing Float Inspection 83
- Table 5-10. Gate Rotor Float 84
- VSG 301-701 Compressors) 87
- Gate Rotor Disassembly 92
- Command Shaft Assembly 95
- Problem Reason Solution 97
- Flash Pattern Meaning 100
- Section 6 • Troubleshooting 100
- Problem Solution 101
- 6 – 8 / Blank 104
- Warranty Claim Processing 105
- On Site Service Support 105
- Compressor Process 106
- PRODUCT ANALYSIS REPORT 108
- Evaluation: 108
- Physical Properties Results * 108
- Spectrochemical Analysis 108
- No Action Required 108
- OUTLET ON TOP 110
- INLET ON BOTTOM 110
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