Emerson VSM- Manual

7 The seller extends warranty, from date of shipment, to a period of fifteen (15) years on all compressor bearings, five (5) years on all internal compressor parts and two (2) years on the remainder of the parts on single screw compressor units. If within such period any such product shall be proved...

8 The procedure described is a general recommendation for long term storage (over one month of no operation) of Vilter Manufacturing packages and compressors. While this procedure is intended to cover most of the commonly encountered situations, it is the responsibility of the installation fi rm and...

9 Long Term Storage Requirements 2) 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 entire motor be encased in a strong, transparent plastic bag. Before sealing this bag, a moisture indicator should be att...

10 COMPRESSOR The Vilter Single Screw Compressor is a positive displacement, capacity and volume controlled, oil fl ooded, rotary compressor which uses a single main screw intermeshed by two opposing gate rotors. Gas compression occurs when the individual fi ngers of each gate rotor sweep through th...

12 Foundation Introduction Vilter Single Screw compressor units are low vibration machines. Under most conditions, no elaborate foundation is necessary. However a sound foundation maintains motor alignment and proper elevation, and is therefore required. Provided are recommendations for the foundati...

13 Building the Foundation Use the Vilter General Arrangement (GA) and foundation drawings to help secure a building permit and foundation construction. The Vilter GA drawing will have the necessary dimensions required to determine the overall founda-tion size and where to locate the compressor unit...

14 CENTER LINE OF GAS COMPRESSION SYSTEM 6" # 6 @ 12" EACH WAY TOP & BOTTOM COMPRESSOR UNIT G.A. G.A. EL. TOP OF GRADE EXCAVATE TO FROST DEPTH AS REQ'D AND BACKFILL WITH CLSM OR NON-FROST SUSCEPTIBLE FILL Figure 2. Concrete Pad with Compressor Unit Dimensions - Front View Once the site h...

15 Compressor Unit Installation Once the foundation has cured, the compressor unit can be placed on the foundation, see Figure 4. Foundation with Housekeeping Pads Dimensions - Top View and Figure 5. Housekeeping Pad Dimension Detail - Top View. With the appropriate material handling equipment, lift...

16 5/8" DIA. HILTI HAS SS THREADED ROD (HAS-E RODS ARE ACCEPTABLE FOR INTERIOR INSTALLATIONS) INSTALLED USING HIT-ICE/HIT-HY 150 ADHESIVE ANCHORING SYSTEM. (5" PROJECTION, 12 3/8" EMBEDMENT.) HOLES TO BE INSTALLED WITH HAMMER DRILL. DO NOT DIAMOND CORE. (TYP.) CENTER LINE G.A. G.A. G.A. ...

18 Operation and PerformanceThe foundation was designed for: • Outside environment severe exposure• Ambient temperature -10 degrees F to 105 degrees F• Unit weight 20,000 lbs• RPM 3600 • Soil bearing capacity 1,500 lbs/sq.ft.• Wind speed 120 MPH• Exposure factor D• Wind importance factor 1.15• Concr...

19 Rigging and Lifting Thank you for purchasing a gas compressor (the “Compressor”) from Vilter Manufacturing LLC (“Vilter”). Rigging and Lifting a large piece of equipment like the Compressor is extremely dangerous. **DISCLAIMER** NoticeThis rigging and lifting manual (this “Manual”) is provided to...

22 Rigging and Lifting CONTACT VILTER While Vilter will not offer any speci fi c feedback on the Plan or provide a speci fi c Plan for rigging and lifting the Compressor, Vilter may be able to answer questions about the Compressor that are important in developing your Plan. Please contact Vilter at:...

23 Installation I. DELIVERY INSPECTION Vilter screw compressor components are thor-oughly inspected at the factor y, assuring the shipment of a mechanically perfect piece of equip-ment. Damage can occur in shipment, however. For this reason, the units should be thoroughly inspected upon arrival. Any...

31 Stop Check Valve Installation Installation: The new design will apply only to the 2” thru 4” stop valves. Retro fi tting a fi eld installation will require replacing the bonnet assembly. The bonnet must be installed with the spring towards the bottom (see illustrations above). The drill fi xture ...

32 COUPLING INFORMATION COUPLINGS INSTALLATION AND ALIGNMENT These instructions are intended to help you to install and align the coupling. Covered here will be general information, hub mounting, alignment, assembly, locknut torquing, discpack replacement, and part numbers. The coupling as received,...

35 Slide Valve Actuator Installations Instructions Caution WHEN INSTALLING THE OPTICAL SLIDE MOTOR, LOOSEN LOCKING COLLAR BEFORE SLIDING THE COLLAR DOWN ON THE SHAFT. DO NOT USE A SCREWDRIVER TO PRY LOCKING COLLAR INTO POSITION. OVERVIEW Calibration of an optical slide valve actuator is a two step p...

38 Slide Valve Actuator Operation The slide valve actuator is a gear-motor with a posi-tion sensor. The motor is powered in the forward and reverse directions from the main computer in the control panel. The position sensor tells the main computer the position of the slide valve. The main computer u...

39 The actuator cannot be cali-brated The actuator goes into cali-b r at i o n m o d e sp o nt a n e -ously The actuator goes into cali-bration mode ever y time power is restored af ter a power loss Dirt or debris is blocking one or both optocoupler slots The photochopper fence extends less than abo...

43 Operation Section Oil and its additives are crucial in system performance. Vilter Manufacturing will NOT APPROVE non-Vilter oils for use with Vilter compressors. Due to the innumerable choices available it is not possible for us to test all oils offered in the market place, and their effects on o...

44 OIL SYSTEM A. Oil Charge Charge the oil separator with the proper quantity of lubricating oil (see Table 2 in the Installation Section). CAUTION It is imperative you charge the oil into the receiver/separator prior to energizing the control panel to prevent burning out the immersion heater in the...

45 To replace the filter element(s), on single ele-ment tanks, insert the element and make sure it fits onto the outlet connection. Install spring plate, and bolt the cover assembly in place. On units equipped with dual element tanks, insert inner element and make sure it fits onto the out-let conne...

46 Wet the O-ring in the new element with clean refrigeration oil. Insert the new element into the filter tank with the closed end visible and attach the cover to the bowl. HAND TIGHTEN the cover. The filter housing can be evacuated and then slowly pressurized to check for leaks before re-turning to...

49 “Manual-Auto” button is pressed, the oil pump will start. When sufficient oil pressure is built up and the compressor capacity control and volume ratio slide valves are at or below 10%, the compressor unit will start. If the compressor is in the automatic mode, it will now load and unload and var...

50 The Motor Amps Load Limit protects the com-pressor from overloading by decreasing the compressor capacity if the motor amperage is at the Maximum Amps setpoint, or preventing an increase in capacity if the motor amperage is above the Full Load Amps setpoint. ( See manual for the appropriate micro...

51 Operation 4. Manually open the oil isolating valve at the oil separator outlet connection. 5. Open the isolating valve(s) before and after the oil filter housings. 6. 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. FIG...

52 Pre Start-Up Checklists The following checklists are to help prepare the equipment before the Vilter Technician arrives at the jobsite. Vilter recommends that a Trained Technician go through the following tasks. The operating Manuals provided by Vilter, can be referenced for any type of questions...

53 Field Piping and Mechanical Requirements NOTE: If start-up service has been purchased, the following items should be completed before the start- up technician arrives. This will help save time and money. 1. The unit should be leveled and secured to the mounting pad or floor. 2. The suction and Di...

54 Field Wiring Requirements VRS SCREW COMPRESSOR, VSS/VSM SINGLE SCREW COMPRESSOR UNITS PRESTART-UP CHECKLIST FIELD WIRING REQUIREMENTS FOR UNITS WITH FACTORY WIRED VISSION ® MICROPROCESSORS NOTE: If startup service has been purchased, to save time and money, the following items should be completed...

55 Stop Check Valve Operation AUTOIn the “Auto Position”, the stop valve is operating as a check valve, allowing fl ow in the directions of the arrows. To set the valve to the automatic posi-tion, fully close the valve, and turn the stem out as indicated by the chart below. CLOSED In the manually “C...

56 A) Disconnect the motor drive coupling from the compressor input shaft. B) Disconnect all gas and oil piping which is at- tached to the compressor. When removing the suction strainer on gas compression units, the suction line should be supported to prevent it from sagging. C) Replace oil drain in...

57 INSTALLATION OF THE COMPRESSOR A) After the work has been completed, reinstall the compressor on the base or C- fl ange adapter (dependent upon compressor model). B) On the units, replace the shims under the com- pressor feet. Check for a soft foot. This is ac-complished by tightening down three ...

58 Top View Direction of rotor movement. Axial force at coupling to be 250-300lbs. Rigidly attach dial indicator. Position it on the axis of the compressor. Small wooden block or fulcrum. Force to be determined by length of level arm. Rotor Being Pushed By Use Of Lever Direction of rotor movement. A...

60 For VSS 751/901 & VSS 1051 THRU 1301 compressors, use side rails and assemble to gaterotor stabilizer as stamped. Drive End GATE ROTOR ASSEMBLY CAUTION Gate rotor removal and assembly is divided into distinct instructions, instructions for all VSS models and different instructions for all VSM...

67 GATE ROTOR BLADE REMOVAL A) Remove the gate rotor assembly. B) Remove the snap ring and washer from the gate rotor assembly. Lift gate rotor blade assembly off the gate rotor support. C) Check damper pin and bushing for excessive wear. Replace if necessary. Service Relief area faces TOP of assemb...

68 GATE ROTOR BLADE INSTALLATION A) Install damper pin bushing (120) in gate rotor blade (111) from the back side of the blade. Be sure the bushing is fully seated. B) Place the blade assembly on the gate rotor sup- port. Locating Damper over pin. C) Install washer (119) and snap ring (130) on gate ...

69 GATE ROTOR THRUST BEARING INSTALLA- TION A) For installation of thrust bearings on VSS units: 1) Install bearings (126) in the housing so the bearings are face to face. The larger sides of the inner races are placed together. A light application of clean compressor lubricating oil should be used ...

71 COMPRESSOR SHAFT SEAL REPLACEMENT COMPRESSOR SHAFT SEAL REMOVAL A) Prepare the compressor for servicing as outlined in section REMOVAL. B) Remove bolts (281) holding the shaft seal cover (218). Insert two of the bolts into the threaded jacking holes to assist in removing the cover. There will be ...

72 COMPRESSOR SEAL INSTALLATION NOTE: When replacing the stationary members of the seal on the VSS 451 thru VSS 601 the roll pin in the cover is used only with the seal assembly having a station-ary mirror face. If a seal assembly with a stationary carbon face is installed, the roll pin must be remo...

73 shoulder 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 seal carbon will be damaged when the seal cover is ins talled. Maintenance Suggestion: A spray bottle fi lled with clean compressor oil may be used to lu...

74 INSPECTION OF SLIDE VALVE ASSEMBLIES IN THE COMPRESSOR Prepare the compressor for servicing. A) Remove the gate rotor access covers. Using a mirror and fl ashlight, visually inspect the slide valve carriage through the gas bypass opening. Look for any signi fi cant signs of wear on the slide valv...

76 COMMAND SHAFT ASSEMBLY REMOVAL The following steps can be used to remove or install either the capacity or volume command shaft as-semblies. A) Prepare the compressor for servicing. B) Follow the appropriate instructions to remove control actuator. C) Remove four socket head cap screws (457) and ...

77 C) The command shaft bearing (435) is a press fi t on the command shaft (413). Remove the command shaft bearing with a suitable press. D) Remove the O-ring seal (445) from the com- mand shaft housing. The command shaft bush-ing (433 and 436) might have to be removed to gain access to o-rings. Rep...

78 DISCHARGE MANIFOLD INSTALLATION A) Install (2) guide rods to position the discharge manifold. Install a new manifold gasket and the discharge manifold. Install the dowel pins and bolts, tighten manifold bolts to the recom-mended torque value. B) On VSS 451-3001 compressors install the dis- charge...

79 C) To remove the cross shafts, remove socket head bolts, clamp and spacers from both sides. VSS 751-2101 compressors cross shafts. VSM 301-701 & VSS 2601-3001 compressors cross shafts Volume control cross shaft. Capacity control cross shaft. D) Drive the roll pins from pinion gear from one si...

81 Service USING A TORQUE WRENCH CORRECTLY TORQUE WRENCHES USING A TORQUE WRENCH CORRECTLY INVOLVES FOUR PRIMARY CONCERNS: A. A smooth even pull to the break point is required. Jerking the wrench can cause the pivot point to break early leaving the bolt at a torque value lower then required. Not sto...

82 A. 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. The lock washer set is assembled so the course serrations that resemble ramps are mated together. C. Once the lock washer set is tightened down, i...

85 Simplex filter housing. Duplex filter housing. 6.04 KT 773A & B FILTER ELEMENTS Vilter Part KT 773A KT 773B Number Tank O-Ring 2176BY 2176BZ Usage 3109A 3111A Duplex Simplex Housing HousingUsage 1. VSM all models 4/1/00 to present. 2. VSS 451 to 1301 models with 30” and smaller oil separators...

87 Maintenance NOTE: See Motor Manual for proper lubrication procedures and service intervals. Refrigeration Maintenance and Inspection Schedule The following service intervals are based on the usage of Vilter Manufacturing Corporation Premium Grade refrig-eration oil in VSS, VSM and VSR Single Scre...

89 Gate Rotor 111 120 135 119 130 141 131 125 110 126 142 143 118 121 122 123 124

93 Shaft Seal 230 260 219 Shaft Seal With Stationary Carbon Face MODEL NUMBER VSS 291 thru VSS 751 thru VSS 1301 VSS 1551 thru VSS 601 VSS 1201 VSS 2101 ITEM DESCRIPTION QTY VPN QTY VPN QTY VPN QTY VPN SHAFT SEAL AMM KIT (219, 230, 260) 1 KT709A 1 KT709B 1 KT709MB 1 KT709C SHAFT SEAL R22 KIT (219, 2...

96 Slide Valve Cross Shafts and End Plate 297 286 226 298 222 268 269 297 228 226 227 VSS 291 THRU VSS 601 ONLY 286 221 268 222 298 269 228 VSS 291 THRU VSS 601 ONLY NO SPACER THIS SIDE OF SHAFT ASSEMBLY NOTE: BOTH ACTUATOR SHAFT ASSEMBLIES ARE IDENTICAL ON VSS COMPRESSORS.

99 Slide Valve Carriage Assembly MODEL NUMBER VSS 291 thru VSS 751 VSS 1051 VSS 1301 VSS 601 VSS 901 VSS 1201 ITEM DESCRIPTION QTY VPN QTY VPN QTY VPN QTY VPN 300 CARRIAGE ASSEMBLY 2 A25179B 2 A25179C 2 A25179D 2 A25179DSR 304 CAPACITY PISTON (340, 341, 350, 355) 2 A25183B 2 A25183C 2 A25183D 2 A251...

105 Miscellaneous Frame Components MODEL NUMBER VSS 291 thru VSS 751 VSS 1051 VSS 1301 VSS 601 VSS 901 VSS 1201 ITEM DESCRIPTION QTY VPN QTY VPN QTY VPN QTY VPN - GASKET & O-RING KIT 1 KT710A 1 KT710B 1 KT710C 1 KT710J 504A FLANGE SET (513A, 514A, 545A) 1 A25190A 1 A25190A 1 A25190B 1 A25190A 50...

109 Replacement Tools MODEL NUMBER VSS 291 thru VSS 751 VSS 1051 VSS 1551 thru VSS 601 VSS 901 VSS 1201 VSS 2101 VSS 1301 ITEM DESCRIPTION QTY VPN QTY VPN QTY VPN QTY VPN 900 GATE ROTOR TOOLS 1 A25205B 1 A25205C 1 A25205C 1 A25205E 901A GATE ROTOR STABILIZER SET (901A, 901B, 901C) 1 A25698A 1 A25698...

116 Main Rotor, Slide Valve Cross Shafts & End Plate Models VSM 301-401 Counter Clockwise ONLY

129 ICM/ICAD Motorized Valve Setup Instructions The following items need to be setup in order for the valve to operate properly. 1. Press the “Circle” button on the valve. A value of “01” should be shown on the screen. 2. Press the “Circle” button. There should be a value of “1” shown. If not use th...

130 13. Press the “Up” arrow button until a value of “26” is shown on the screen. 14. Press the “Circle” button. Press the up/down arrow buttons to change the value to the correct valve that is on the unit. The value number is listed on the valve. The values and valves are as follows: 0: No valve se...

ICM/ICAD Motorized Valve Installation, Programming, and Troubleshooting 12 DKRCI.EI.HT0.A1.22 / 520H1639 ¢ Danfoss (USCO / MKS), 11- 2006 Danfoss · Refrigeration & Air-Conditioning Division · 7941 Corporate Drive · Baltimore, MD 21236 Ph 410-931-8250 · Fax 410-931-8256 · E-mail: baltimore@danfos...

143 Appendix A: Pre Start Up for Remote Oil Coolers