Emerson VSSG, VSG Drive Coupling Form-Flex BPU Hub Installation, 3. Shaft and Hub Distances, Size

Page 68
Drive Coupling (Form-Flex BPU) Hub Installation

Section 5 • Maintenance/Service

Drive Coupling (Form-Flex BPU) Hub Installation

On all single screw units, the coupling assembly is shipped loose and will have to be installed and aligned on site. This is to allow a check of proper electrical phas- ing and direction of motor rotation. The motor and compressor have been aligned from the factory with the coupling hubs already installed. Using a dial indicator for aligning is recommended.

with a small clearance over the top.

NOTE

If hub position on shaft does not allow enough room to install bolts, install bolts and disc pack before mounting hub on shaft.

Hubs come in two different types, straight bore and tapered bore. Tapered bore hubs have additional hardware. Typically, a compressor will have a tapered shaft and therefore use a tapered bore hub.

NOTE

Drive coupling type and size can be determined by the information on the compressor nameplate when ordering; Order Number and Compressor Model Number.

To install the coupling, proceed with the following steps:

WARNING

Follow local lockout/tagout procedure. Failure to comply may result in serious injury, death and/or damage to equipment.

1.Ensure disconnect switches are in the OFF position for the compressor unit and oil pump motor start- er, if equipped.

2.If hubs are already installed on motor shaft and compressor shaft, proceed to Drive Center Member Installation and Alignment procedure.

3.If coupling assembly is already assembled, the lock nuts are not torqued. Remove lock nuts and bolts securing hubs to disc packs. Remove both hubs. Leave the disc packs attached to center member.

4.Clean hub bores and shafts. Remove any nicks or burrs. If bore is tapered, check for good con- tact pattern. If bore is straight, measure bore and shaft diameters to ensure proper fitment. The keys should have a snug side-to-side fit in the keyway

STRAIGHT BORE HUBS

5.For straight bore hubs, install key in keyway of shaft.

6.Install hub on shaft. If installing straight bore hubs on motor and compressor shafts, allow 1/16” gap between the outer face of the hub to the outer face of the shaft for both hub installation. This will allow some play when installing the spacer. If installing a straight bore hub and a taper bore hub, allow a 1/8” gap between the outer face of the straight bore hub to the outer face of the straight shaft, see Table 5-3.

7.Install clamping bolts in hub.

8.Tighten clamping bolts, see Table 5-4.

9.Install set screw in hub to secure key.

10.Tighten set screw, see Table 5-4. Repeat steps for second straight bore hub.

TAPERED BORE HUBS

11.For taper bore hubs, install key in keyway of shaft.

12.Install hub on shaft.

13.If lock washers are being used, install hub cap, lock washers and bolt on shaft.

14.If locking tab is being used, install hub cap, locking tab and bolt on shaft.

15.Tighten bolt and draw hub up shaft to a stop.

Table 5-3. Shaft and Hub Distances

 

 

Shaft Gap for Tapered

Shaft Gap for Straight

Distance

 

 

Coupling

Compressor &

Compressor &

 

 

Between Hub

 

 

Size

Straight Motor Shaft

Straight Motor Shaft

 

 

Faces

 

 

 

Combination

Combination

 

 

 

 

 

 

 

 

 

 

 

 

BP38U

 

 

 

 

 

 

 

 

 

 

 

BP41U

 

 

 

 

 

 

 

 

 

 

 

BP47U

6.25”

5.125”

5.00”

 

 

BP54U

(158.75 mm)

(130.18 mm)

(127 mm)

 

 

 

 

 

 

 

 

BP54U

 

 

 

 

 

 

 

 

 

 

 

BP56U

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 – 10

VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG

Page 67 Page 69
Image 68
Page 67 Page 69
Contents Installation, operation & maintenance manual VSG/VSSG compressor unitPage VSG/VSSG Standard Vilter Warranty Statement Vilter Manufacturing LLC Important MessageREAD CAREFULLY BEFORE INSTALLING AND STARTING YOUR COMPRESSOR Table of Contents Section 3 InstallationSection Title Section 1 General InformationSection 5 Maintenance/Service Section 6 TroubleshootingSection Number Section 4 OperationSection 7 Warranty and Parts List of Tables and FiguresAppendices Table/FigureFigure 3-12. Installation of Coolers - Next to Buildling Section 1 General Information How To Use This Manual Section 1 General Information Gas Compressor Unit Model Designations Figure 1-1. Gas Compressor Unit Model DesignationSection 1 General Information System Unit Identification Figure 1-2. Gas Compressor Unit Components 1 of Section 1 General InformationCompressor Unit Component Identification Figure 1-2. Gas Compressor Unit Components 2 of Section 1 General Information Component Identification Continued Figure 1-2. Gas Compressor Unit Components 3 ofSection 1 General Information Piping & Identification Component Tags 3-Way Thermostatic Valve Symbols and IdentificationsPosition Transmitter High Side Float Valve Steady-Mount Bulb & Capillary 1 - 10 / Blank Section 2 Theory of Operation Gas FlowOil Life and Oil Flow Figure 2-1. Gas Compressor Unit P&IDThis is a continuous cycle RTDs and Pressure TransducersControl System Section 3 Installation Delivery InspectionRigging and Lifting of Compressor Unit Figure 3-1. Rigging and Lifting PointsLong Term Storage Recommendations The following are recommendations regarding long term storageAIR COOLED OIL COOLERS Compressor Unit Inspections Prior to Storage or InstallationRecommended Onsite Tools LONG TERM STORAGE LOG Compressor has been placed in operation as ofFoundation Foundation MaterialsConsiderations Prior to Starting Building the FoundationCompressor Unit Installation of both Check the ability of the soil to carry the loadLeveling and Grouting recommendations for setting, precautions, mixing, andAdditional Information Codes and Standards Figure 3-6. Housekeeping Pad Dimension Detail - Top View 2 - # CLOSED TIES CENTER LINE 5 - # 6 VERTLEVEL COMPRESSOR UNIT HOUSEKEEPING PADSPiping 010Ä5*4+0- 214176 4%1//0&& 14 175-2+0 10%46 $#5Table 3-2. Maximum Allowable Flange Loads Nozzle Dia. inFz lbf Fy lbfONE FAN DIAMETER NOT PREFERRED HOT AIR RECIRCULATION PREFERRED Figure 3-14. Cooler Placement and SpacingFigure 3-13. Discharge Elevation of Coolers Pressure Testing Initial Oil Charging Using Non -Vilter OilsUnit Oil Charging and Priming Do not hydro test compressur unit. Failure to complyBypass Valve Normal Operating Level Maximum NON-Operating LevelMinimum Operating Level SUCTION INLET CLOSEOIL MIXING OPEN VALVESection 3 Installation Initial Oil ChargingPriming Remote Oil Cooler and Piping REMOTEMOTOR SUCTION INLETOIL FILTER OPEN Section 3 Installation Pre Start-Up Pre Start-Up Checklist15. Verify that all valves are in the open position Section 3 Installation Start-Up Section 4 Operation OperationOil Inspection Dual Oil FiltersControl System Calibration Stopping/RestartingStarting, Stopping and Restarting the Compressor Starting Calibrate Slide Valve ActuatorsFigure 4-2. Actuator Assembly Section 4 Operation Figure 4-4. Slide Valve Calibration Screen Compact Logix PLC Figure 4-5. Photo-chopperCapacity Table 4-1. Command Shaft Rotation SpecificationsAngle/Slide Travel Oil Temperature Control Valve Oil Mixing Valve Operation 18. Press the “Set Max” buttonFail Position Purging with Dry Nitrogen 10. Close discharge bleed valve while still purging OIL SEPARATOR Purging with Dry GasPressure Indicator Section 4 Operation Figure 4-12. Suction Bypass Valve and Equalizing Solenoid Suction Oil Figure 4-13. Suction Oil Charging ValveCoalescing Oil Return Line Setup Table 5-1. Maintenance/Service Schedule Oil CircuitUnit ControlSection 5 Maintenance/Service Maintenance/ServiceMaintaining Proper Operation Compressor Unit Isolation forCompressor Unit Leak Check Oil System Components Oil Sampling Use Vilter Oil Analysis Kit VPN 3097A to collect an oilsample for analysis. For an example, see Figure 5-2. Fill Send samples immediately to the oil analysis lab afterOil Charging Oil Filter Replacement Single Oil Filter AssemblyDual Oil Filter Assembly Oil DrainingVent Valve Drain Valve Inlet Shut-Off Valves Centering Strap Coalescing Filter ReplacementCoalescing Filter Oil Pump Strainer View From Back of Oil Pump StrainerSize Drive Coupling Form-Flex BPU Hub InstallationTable 5-3. Shaft and Hub Distances Drive Center Member Installation and Alignment 17. Install set screw in hub cap to secure key in keyway of shaftAngular Alignment Table 5-5. Disc Pack Installation Torque SpecificationsTable 5-4. Hub Clamp Bolt and Set Screw Torque Specifications Drive Coupling Type C Sure-Flex Replacement Drive Coupling Form-Flex BPU Center Member and Hub RemovalCompressor Replacement Table 5-6. Clamping Bolts and Set Screw Torque SpecificationsLock Washer Compressor Shaft Bearing Float Inspections Figure 5-11. Bearing Axial Float InspectionGate Rotor Float and Gate Rotor Bearing Float Inspection Table 5-7. Maximum Bearing FloatFigure 5-12. Bearing Radial Float Inspection Figure 5-13. Gate Rotor FloatTable 5-8. Gate Rotor Float Figure 5-14. Gate Rotor Bearing FloatApplied Force Rigidly attach dial indicator Use bolt for fulcurm Gate rotor bearing float being measuredSection 5 Maintenance/Service Gate Rotor and Support Clearance Figure 5-15. Gate Rotor and Support Clearance - Minimum ClearancesFigure 5-16. Gate Rotor and Support Clearance - Measuring Gate Rotor Support Gate Rotor Gate Rotor Support Gate RotorGate Rotor Support Gate Rotor Straight Edge Straight Edge Straight EdgeTable 5-9. Gate Rotor Tool Sets Gate Rotor Assembly Replacement All VSG & VSSG Compressors ExceptVSG 301-701 Compressors Figure 5-17. Gate Rotor Assembly Removal and Tools Figure 5-18. Gate Rotor Assembly RemovalFigure 5-19. Gate Rotor Assembly and Tools Figure 5-20. Gate Rotor and Shelf ClearanceGate Rotor Assembly Replacement VSG 301-701 Compressors ONLY Figure 5-21. Gate Rotor Assembly BreakdownFigure 5-23. Gate Rotor and Shelf Clearance Figure 5-22. Gate Rotor Thrust BearingFigure 5-24. Gate Rotor Blade Assembly Gate Rotor DisassemblyFigure 5-25. Gate Rotor Blade Installation Figure 5-27. Thrust Bearing Installation Figure 5-26. Gate Rotor Thrust BearingSlide Valve Actuator Assembly Replacement Figure 5-28. Roller Bearing AssemblyFigure 5-29. Command Shaft Seal Command Shaft Assembly ReplacementCommand Shaft Seal Replacement Figure 5-30. Command Shaft Seal Installation Section 6 Troubleshooting ProblemSolution Table 6-1. Slide Valve Actuator Troubleshooting Guide 1 ofTable 6-1. Slide Valve Actuator Troubleshooting Guide 2 of Table 6-2. Slide Valve Actuator LED Blink Codes* 1 of Flash PatternMeaning er before the calibration procedure was completed. The actuator will not move while this error code is displayed. To clear the errorcalibrate the actuator. If this error has occurred and the cause was not the loss of 24V power during calibration, possible causes areTable 6-3. Troubleshooting Guide - General Problems & Solutions 1 of Table 6-3. Troubleshooting Guide - General Problems & Solutions 2 of Table 6-3. Troubleshooting Guide - General Problems & Solutions 3 of 6 - 8 / Blank Section 7 Warranty and Parts Warranty Claim ProcessingOn Site Service Support Warranty does not cover labor and extraneous expensesRemanufactured Gas Bare Shaft Compressor Process Request a “VSG Single Screw Compressor Rebuild Form”Torque Specifications for 17-4 Stainless Steel Fasteners ft-lbs Appendix A Torque SpecificationsTorque Specifications ft-lbs Appendix B Motor Compressor - General Storage Instructions Appendix C Oil Analysis Report EvaluationPRODUCT ANALYSIS REPORT No Action RequiredAppendix D Recommended Header Piping INLET ON BOTTOM Appendix E Recommended Remote Air Cooled Oil Cooler PipingOUTLET ON TOP Blank
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