Emerson VSSG 1. Command Shaft Rotation Speciﬁcations, Operation, Angle/Slide Travel, Capacity

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Table 4-1. Command Shaft Rotation Speciﬁcations*

Section 4 • Operation

Table 4-1. Command Shaft Rotation Speciﬁcations*

Compressor

Model

Command Shaft Rotation				No. of Turns/Rotation	Angle/Slide Travel
Capacity		Volume		Capacity	Volume
INC	DEC	INC	DEC	Turns Degrees Travel	Turns Degrees Travel

	VSSG 291
	VSSG 341	CW	CCW	CW	CCW	0.91	328	3.568”	0.52	187	2.045”
	VSSG 451	CW	CCW	CW	CCW	0.91	328	3.568”	0.52	187	2.045”
	VSSG 451
	VSSG 601

	VSG 301
	VSG361	CW	CCW	CW	CCW	0.80	288	3.141”	0.45	162	1.767”
	VSG 401

	VSG 501
	VSG 601	CCW	CW	CCW	CW	0.91	328	3.568”	0.52	187	2.045”
	VSG 701

	VSG 751	CCW	CW	CCW	CW	1.09	392	4.283”	0.63	227	2.473”
	VSG 901	CCW	CW	CCW	CW	1.09	392	4.283”	0.63	227	2.473”
	VSG 901

	VSG 791
	VSG 891
	VSG 1051	CCW	CW	CCW	CW	1.22	439	4.777”	0.74	266	2.889”
	VSG 1201
	VSG 1301

	VSG 1551
	VSG 1851	CCW	CW	CCW	CW	1.48	533	5.823”	0.87	313	3.433”
	VSG 2101

	VSG 2401
	VSG 2601	CCW	CW	CCW	CW	1.80	648	7.072”	1.36	490	5.341”
	VSG 2801	CCW	CW	CCW	CW	1.80	648	7.072”	1.36	490	5.341”
	VSG 2801
	VSG 3001

*The large gear on the command shaft has 50 teeth. The teeth are counted when moving the command shaft from the minimum stop position to the maximum stop position.

The manual operating shaft on the gear motor should be turned the opposite direction of the desired command shaft rotation.

The capacity and volume control motors are equipped with a brake, if it is necessary to operate the control motors manually, the brake must be disengaged. The brake can be disengaged by pushing on the motor shaft on the cone end. The shaft should be centered in its travel. Do not use excessive force manually operating the motor or damage may result.

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

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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 Section Title Table of ContentsSection 3 Installation Section 1 General InformationSection Number Section 5 Maintenance/ServiceSection 6 Troubleshooting Section 4 OperationAppendices Section 7 Warranty and PartsList of Tables and Figures 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 Oil Life and Oil Flow Section 2 Theory of OperationGas Flow Figure 2-1. Gas Compressor Unit P&IDThis is a continuous cycle RTDs and Pressure TransducersControl System Rigging and Lifting of Compressor Unit Section 3 InstallationDelivery Inspection 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 ofConsiderations Prior to Starting FoundationFoundation Materials 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 LEVEL Figure 3-6. Housekeeping Pad Dimension Detail - Top View2 - # CLOSED TIES CENTER LINE 5 - # 6 VERT COMPRESSOR UNIT HOUSEKEEPING PADSPiping 010Ä5*4+0- 214176 4%1//0&& 14 175-2+0 10%46 $#5Fz lbf Table 3-2. Maximum Allowable Flange LoadsNozzle Dia. in Fy lbfONE FAN DIAMETER NOT PREFERRED HOT AIR RECIRCULATION PREFERRED Figure 3-14. Cooler Placement and SpacingFigure 3-13. Discharge Elevation of Coolers Unit Oil Charging and Priming Pressure TestingInitial Oil Charging Using Non -Vilter Oils Do not hydro test compressur unit. Failure to complyBypass Valve Normal Operating Level Maximum NON-Operating LevelMinimum Operating Level SUCTION INLET CLOSEOIL MIXING OPEN VALVEPriming Remote Oil Cooler and Piping Section 3 InstallationInitial Oil Charging 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 Oil Inspection Section 4 OperationOperation Dual Oil FiltersStarting, Stopping and Restarting the Compressor Starting Control System CalibrationStopping/Restarting 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 Unit Table 5-1. Maintenance/Service ScheduleOil Circuit ControlMaintaining Proper Operation Section 5 Maintenance/ServiceMaintenance/Service Compressor Unit Isolation forCompressor Unit Leak Check sample for analysis. For an example, see Figure 5-2. Fill Oil System Components Oil SamplingUse Vilter Oil Analysis Kit VPN 3097A to collect an oil Send samples immediately to the oil analysis lab afterOil Charging Dual Oil Filter Assembly Oil Filter ReplacementSingle 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 InspectionFigure 5-12. Bearing Radial Float Inspection Gate Rotor Float and Gate Rotor Bearing Float InspectionTable 5-7. Maximum Bearing Float Figure 5-13. Gate Rotor FloatApplied Force Rigidly attach dial indicator Use bolt for fulcurm Table 5-8. Gate Rotor FloatFigure 5-14. Gate Rotor Bearing Float Gate rotor bearing float being measuredSection 5 Maintenance/Service Gate Rotor and Support Clearance Figure 5-15. Gate Rotor and Support Clearance - Minimum ClearancesGate Rotor Support Gate Rotor Figure 5-16. Gate Rotor and Support Clearance - MeasuringGate Rotor Support Gate Rotor Gate 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 Solution Section 6 TroubleshootingProblem 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 calibrate the actuator. If this error has occurred and the cause was er before the calibration procedure was completed. The actuatorwill not move while this error code is displayed. To clear the error 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 On Site Service Support Section 7 Warranty and PartsWarranty Claim Processing 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 PRODUCT ANALYSIS REPORT Appendix C Oil Analysis ReportEvaluation No Action RequiredAppendix D Recommended Header Piping INLET ON BOTTOM Appendix E Recommended Remote Air Cooled Oil Cooler PipingOUTLET ON TOP Blank