Emerson VSG & VSSG Spécifications Page 1

1VSG & VSSGSingle Screw Compressor UnitThe World’s Best CompressorsFor Gas CompressionTM

10The Vilter compressors feature the exclusive Parallex™ Slide System, which consists of a pair of slides for each gate rotor assembly. These two ind

100Volume RatioCapacity SlideCarriage AssemblySlide Valve Carriage AssemblyAssembly Includes Carriage and Slides.

101Slide Valve Carriage Assembly MODEL NUMBER ITEM DESCRIPTION ALL VSG 301-401 ALL VSG 501-701 QTY VPN QTY VPN 300 CARRIAGE ASSEMBLY. 1 A2

102Actuator & Command Shaft

103 MODEL NUMBER VSSG 291 thru VSG 751 thru VSG 1051 thru VSG 1551 thruITEM DESCRIPTION VSSG 601 VSSG 901 VSG 1201 VSG 2101 QTY VP

104Model VSG 501-701Model VSG 301-401Miscellaneous Frame Components

105 MODEL NUMBER ITEM DESCRIPTION ALL VSG 301-401 ALL VSG 501 - 701 QTY VPN QTY VPN 512 MANIFOLD GASKET 1 25737A 1 26037A 514 ECON-O-MIZER

106Housing AccessoriesMiscellaneous Frame Components

107 MODEL NUMBERITEM DESCRIPTION VSG 301 - 701 QTY VPN117 GATE ROTOR COVER. 1 25416B118 COVER GASKET. 2 25259B129 GASKET. 1 11323T180

108 MODEL NUMBERITEM DESCRIPTION ALL VSG 301-401 ALL VSG 501-701 QTY VPN QTY VPN901 GATEROTOR STABILIZER. 1 25742A 1 25742B902 SEAL INSTALL

TempControlValveOilPumpCheckValveDrainGas & Oil SeparatorDischargeGasSingle ScrewCompressorSuctionGasStrainerStopValveFilterStrainerCheckValveStop

11Foundation• The foundation must adequately support the weight of the compressor package, including vessels, oil coolers, controllers, and all ancil

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110Vilter Manufacturing LLCP.O. Box 8904Cudahy, WI. 53110-8904P: 414-744-0111F: 414-744-1769www.vilter.comEmersonClimate.com35391SSG Rev. 08 (6/2011

12Rigging and LiftingThank you for purchasing a gas compressor (the “Compressor”) from Vilter Manufacturing LLC (“Vilter”). Rigging and Lifting a lar

13Rigging and LiftingTraining curriculum for Participants, at a minimum, should include: • A review of safe operating practices; • A review of who e

14• Get third-party conrmation that the crane owner and the crane operator are in compliance with applicable laws, regulations and internal safety s

15Rigging and Lifting• If the Compressor is not balanced, lower and adjust as necessary. CONTACT VILTERWhile Vilter will not offer any specic feedba

16DELIVERY INSPECTIONVilter screw compressor components are thoroughly inspected at the factory. However, damage can occur in shipment. For this rea

17TABLE 2. OIL CHARGEThe oil level may be above the top sight glass at this time. Electrically forcing on the oil pump will aid in pre-lubing the var

18COUPLING INFORMATIONAll other coupling information can be found in thevendor section of this manual.COUPLINGS INSTALLATION AND ALIGNMENTThese instr

19This means there is a minimal amount of waviness in the disc pack when viewed from the side. This will result in a exing element that is centered a

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20with the hole in the disc pack, slide one long bolt through washer or link, disc pack, center ring, disc pack, washer or link, and then secure with

21Slide Valve Actuator Installations InstructionsCautionWHEN INSTALLING THE OPTICAL SLIDE MOTOR, LOOSEN LOCKING COLLAR BEFORE SLIDING THE COLLAR DOWN

22Caution: there are wires attached to the con-nector on the plastic cover. Handling the cover too aggressively could break the wires. 7. Gently lif

2321. Use the INC button to rotate the actuator to-wards its maximum position while watching the millivolt readout on the controller screen. Discont

24Slide Valve Actuator OperationThe slide valve actuator is a gear-motor with a posi-tion sensor. The motor is powered in the forward and reverse dir

25The actuator cannot be cali-bratedThe actuator goes into cali-bration mode spontaneouslyThe actuator goes into cali-bration mode every time power is

26The motor was manually moved while the position sensor was not powered. The motor brake is not working properly The position sensor’s EEPROM memor

27Bad thermal switch Any of the reasons listed in “The motor will not move in either direc-tion” Stripped gears inside the gear mo-tor or the armature

28Note 1: TP1 and TP2 are plated-thru holes located close to the slotted optocouplers on the board. They are clearly marked on the board silkscreen l

29Operation SectionOil and its additives are crucial in system performance. Vilter Manufacturing will NOT APPROVE non-Vilter oils for use with Vilter

3READ CAREFULLY BEFORE INSTALLING AND STARTING YOUR COMPRESSOR.The following instructions have been prepared to assist in installation, operation and

30OIL SYSTEMA. Oil ChargeCharge the oil separator with the proper quantity of lubricating oil (see Table 2 in the Installation Section).CAUTIONIt is i

31CAUTIONWhen changing filter, discard clogged filter only. Save and reuse spring plate and centering piece. This filter MUST be installed with the

32by ensuring that the ball is in the closed position and that the actuator indicator displays CLOSED.3.2 When the electrical power to the valve is en

33NOTE: The ball valve and the actuator must always be assembled in the CLOSED position. See Section 3. Calibration above.CAUTION: Be careful not

34 COMMAND SHAFT ROTATION NO. OF TURNS / ROTATION ANGLE / SLIDE TRAVEL COMP. CAPACITY VOLUME

35OperationThe Motor Amps Load Limit protects the com-pressor from overloading by decreasing the compressor capacity if the motor amperage is at the M

366. Manually open the stop valve on the oil bleed return line from the element section and open the expansion valve 1/2 of a turn. See Figure 7.FIG

37Pre Start-Up ChecklistThe following Check List is to help prepare the equipment before the Vilter Technician arrives at the jobsite. Vil-ter recomm

38Pre Start-Up Checklist11. The center member of the compressor is shipped loose to help facilitate final field alignment and allow for motor rotatio

39MaintenanceGas Compression "Maintenance and Inspection Schedule"4/29/2009R R R R R R RS S S S S S S S S S S S SR R R R R R R R R R R R R R

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40B) Disconnect all gas and oil piping which is at-tached to the compressor. When removing the suction strainer on gas compression units, the suctio

41INSTALLATION OF THE COMPRESSORA) After the work has been completed, reinstall the compressor on the base or C-ange adapter (dependent upon compres

42Top ViewDirection of rotor movement. Axial force at coupling to be 300-500lbs.Rigidly attach dial indicator. Position it on the axis of the compress

43TABLE 2. GATE ROTOR FLOATE) Readings could be higher than 0.020. If readings is greater than 0.030 over table tolerance contact Vilter’s home ofce

44Drive EndGATE ROTOR ASSEMBLY CAUTIONGate rotor removal and assembly is divided into dis-tinct instructions, instructions for all VSG and VSSG models

45E) Remove the hex head and socket head bolts from the thrust bearing cover. Insert two of the bolts into the threaded jacking holes to assist in re

46REMOVAL (ALL VSG 301-701 MODELS)The removal of the gate rotor assembly for the VSG 301-701 compressors is similar for the VSG 901-2101 compressors.

47E) Remove plug on the thrust bearing housing. Loosen the socket head cap screw that is located underneath the plug. This secures the inner races

48INSTALLATION (All VSG Models)A) Install the gate rotor support by carefully tilting the roller bearing end of the gate rotor support towards the su

49D) Set the clearance between the gate rotor blade and the shelf.1. Place a piece of 0.003”-0.004” shim stock between the gate rotor blade and the

5Table of ContentsAppendix A: Pre Start Up for Remote Oil CoolersImportant Message ...

50GaterotorforC-angeModelsINSTALLATION (All VSG 301-701 Models)A) Install the gate rotor support. Carefully tilt the roller bearing end of the g

51GATE ROTOR BLADE REMOVALA) Remove the gate rotor assembly.B) Remove the snap ring and washer from the gate rotor assembly. Lift gate rotor blade

52GATE ROTOR BLADE INSTALLATIONA) Install damper pin bushing (120) in gate rotor blade (111) from the back side of the blade. Be sure the bushing is

53GATE ROTOR THRUST BEARING INSTALLA-TIONA) For installation of thrust bearings on VSG and VSSG units:1) Install bearings (126) in the housing so th

54GATE ROTOR ROLLER BEARING REMOVALA) Refer to section REMOVAL ( All VSG) for removal of the gate rotor bearing housings and gate rotor supports.B)

55COMPRESSOR SHAFT SEAL REPLACEMENTCOMPRESSOR SHAFT SEAL REMOVALA) Prepare the compressor for servicing as outlined in section REMOVAL ( All VSG) .B)

56COMPRESSOR SEAL INSTALLATIONNOTE:When replacing the stationary members of the seal on the VSSG 291 thru VSSG 601 the roll pin in the cover is used o

57shoulder on the input shaft. Make sure the seal is seated against the shoulder. If the seal is not fully seated against the shoulder, the shaft se

58INSPECTION OF SLIDE VALVE ASSEMBLIES IN THE COMPRESSORPrepare the compressor for servicing.A) Remove the gate rotor access covers. Using a mirror

59D) Locate and remove the socket head plugs above the slide valve carriage attachment bolts. Re-move the bolts located under the plugs.E) The sli

6VSG STANDARD VILTER WARRANTY STATEMENTSeller warrants all new single screw gas compression units and bareshaft single screw compressorsmanufactured

60COMMAND SHAFT ASSEMBLY REMOVALThe following steps can be used to remove or install either the capacity or volume command shaft as-semblies.A) Prepa

61C) The command shaft bearing (435) is a press t on the command shaft (413). Remove the command shaft bearing with a suitable press.D) Remove the

62DISCHARGE MANIFOLD INSTALLATIONA) Install (2) guide rods to position the discharge manifold. Install a new manifold gasket and the discharge manif

63C) To remove the cross shafts, remove socket head bolts, clamp and spacers from both sides.VSG 751-2101 compressors cross shafts.VSSG 291-601 compr

64Service HEAD OUTSIDE DIAMETER OF BOLT SHANKTYPE BOLT MARKINGS 1/4” 5/16” 3/8” 7/16” 1/2” 9/16” 5/8” 3/4”SAE GRADE 2 6 12 2

65ServiceUSING A TORQUE WRENCH CORRECTLYTORQUE WRENCHESUSING A TORQUE WRENCH CORRECTLY INVOLVES FOUR PRIMARY CONCERNS:A. A smooth even pull to the br

66A. The Nord-Lock® lock washer sets are used in many areas in both the VSG & VSSG screw compressors that require a vibration proof lock washer.B

67Recommended Spare Parts ListRefer to the Custom ManualSparePartsSectionforSpecicApplicationsPleasehaveyourModel#andSalesOrder#availab

68Gate Rotor

69 MODEL NUMBERITEM DESCRIPTION VSSG 451 VSSG 601 QTY VPN QTY VPN GATE ROTOR BLADE AND BEARING REPLACEMENT KIT,

7The procedure described is a general recommendation for long term storage (over one month of no operation) of Vilter Manufacturing packages and compr

70Gate RotorITEM DESCRIPTION VSG 751 VSG 901 VSG 1051 VSG 1201 QTY VPN QTY VPN QTY VPN QTY VPN GATE ROTOR BLADE AND BEARING REPLACEMEN

71ITEM DESCRIPTION VSG 1551 VSG1851 VSG 2101 QTY VPN QTY VPN QTY VPN GATE ROTOR BLADE AND BEARING REPLACEMENT

72Shaft Seal MODEL NUMBERITEM DESCRIPTION VSSG 291-601 VSG 751-1201 VSG 1551 thru 2101 QTY VPN QTY VPN QTY VP

73Tandem Shaft Seal SHAFT DIAMETER DESCRIPTION 2.25” 2.5” 2.875” QTY VPN QTY VPN QTY VPN TAN

74Main Rotor

75 MODEL NUMBER ITEM DESCRIPTION VSSG 451 VSSG 601 VSG 751 VSG 901 VSG 1051 VSG

76Slide Valve Cross Shafts and End Plate

77 MODEL NUMBER VSSG 291-601ITEM DESCRIPTION QTY VPN 221 SHAFT. 2 25843A222 GEAR. 4 25027A226 RACK CLA

78Capacity SlideVolume SlideCarriage AssemblySlide Valve Carriage Assembly

79 MODEL NUMBER-ITEM DESCRIPTION VSSG 291 Thru VSSG 601 QTY VPN 300 CARRIAGE ASSEMBLY. 2 A25179B304 CAPACITY PISTON

82) Cover the unit completely to exclude dirt, dust, moisture, and other foreign materials.3) If the motor can be moved, it is suggested that the en

80 MODEL NUMBER ITEM DESCRIPTION VSG 751 VSG 901 VSG 1051 VSG 1201 QTY VPN QTY VPN QTY VPN QTY VPN 300 CARRIAGE ASSEMBLY. 2 A25179C 2

81 MODEL NUMBERITEM DESCRIPTION VSG 1551 to 2101 QTY VPN300 CARRIAGE ASSEMBLY. 2 A25179E304 CAPACITY PISTON 340, 341, 350 & 355 2 A2

82Actuator & Command Shaft

83 MODEL NUMBER VSSG 291 thru VSG 751 thru VSG 1051 thru VSG 1551 thruITEM DESCRIPTION VSSG 601 VSSG 901 VSG 1201 VSG 2101 QTY VPN

84VSG Screw CompressorMiscellaneous Frame Components

85 MODEL NUMBERITEM DESCRIPTION VSSG 291 thru VSSG 601 QTY VPN GASKET AND O-RING KIT; 1 KT710A1504 FLANGE SET 513, 514 & 547A. 1

86Miscellaneous Frame Components MODEL NUMBER ITEM DESCRIPTION VSG 751 VSG 901 VSG 1051 VSG 1201

87 MODEL NUMBER ITEM DESCRIPTION VSG 1551 THRU VSG 2101 QTY VPN GASKET AND O-RING KIT; 1 KT710D 504 FLANGE SET 513, 514 & 547.

88Replacement Tools2911551

89 MODEL NUMBERITEM DESCRIPTION VSSG 291 thru VSSG 601 QTY VPN 900 GATEROTOR TOOLS (901, 910, 911, 912, 913, 914, 915, 916 & 917

9COMPRESSORThe Vilter Single Screw Compressor is a positive displacement, capacity and volume controlled, oil ooded, rotary compressor which uses a s

90 MODEL NUMBERITEM DESCRIPTION VSG 1551 thru VSG 2101 QTY VPN900 GATEROTOR TOOLS (901, 910, 911, 912, 913, 914, 915, 916 & 917). 1

91VSG 301-701 Replacement Parts SectionRecommended Spare Parts ListRefer to the Custom ManualSparePartsSectionforSpecicApplicationsPleasehavey

92Gaterotor Assembly

93Gaterotor AssemblyPart totals indicated are for one gate rotor assembly, machines with two gate rotors will require double the components listed bel

94Part totals indicated are for one gate rotor assembly, dual gate machines will require double the components. MODEL NUMBER ITEM DESCRIPTION V

95Shaft Seal MODEL NUMBER ITEM DESCRIPTION ALL VSG 301-401 ALL VSG 501-701 QTY VPN QTY VPN * SHAFT SEAL KIT Viton Kit 219, 230, & 26

96Main Rotor, Slide Valve Cross Shafts & End PlateModels VSG301-401 Counter Clockwise ONLY

97Main Rotor, Slide Valve Cross Shafts & End PlateModels VSG301-401 Counter Clockwise ONLY MODEL NUMBER ITEM DESCRIPTION VSG 301 VSG 361 VS

98Main Rotor, Slide Valve Cross Shafts & End PlateModels VSG501-701 Clockwise ONLY

99 MODEL NUMBER ITEM DESCRIPTION VSG 501 VSG 601 VSG 701 QTY VPN QTY VPN QTY VPN 201 MAIN ROTOR ASSEMBLY. 1 A26010BB 1 A26010BA 1 A2601