Quincy Compressor QSVB Series Instruction Manual
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Quincy Compressor QSVB Series Instruction Manual

Quincy Compressor QSVB Series Instruction Manual

Rotary screw vacuum pump
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QSVB Series
Rotary Screw Vacuum Pump
Instruction Manual
This manual contains important safety information and should be made available to
all personnel who operate and/or maintain this product. Carefully read this manual
before attempting to operate or perform maintenance on this equipment.
Manual No. 65021-AA
April 1999 Edition
Updated: September 2010

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Summary of Contents for Quincy Compressor QSVB Series

  • Page 1 QSVB Series Rotary Screw Vacuum Pump Instruction Manual This manual contains important safety information and should be made available to all personnel who operate and/or maintain this product. Carefully read this manual before attempting to operate or perform maintenance on this equipment.

  • Page 3: Table Of Contents

    Standard Warranty SECTION I Safety Precautions Model Identification SECTION II - DESCRIPTION General Description of Quincy QSVB Series Vacuum Pumps Principles of Vacuum Pump Operation Description of Air Flow Description of Fluid Flow and Vacuum Pump Cooling System Fluid Coolers...
  • Page 4 SECTION IV – OPERATING PROCEDURES Prior To Starting Starting the Vacuum Pump Stopping the Vacuum Pump - Normal Operation Stopping the Vacuum Pump - Emergency Operation SECTION V - MAINTENANCE OR SERVICE PREPARATION Preparing for Maintenance or Service SECTION VI - SERVICING Safety Lubrication Fluid Specifications...

  • Page 5: Model Identification

    MODEL IDENTIFICATION: QSVB...

  • Page 6: Standard Warranty

    STANDARD WARRANTY QUINCY VACUUM PUMP DIVISION INDUSTRIAL SCREW PRODUCTS QSVB - PACKAGED VACUUM PUMPS - AIR ENDS REMANUFACTURED AIRENDS AND PARTS Seller warrants products of its own manufacture against defects in workmanship and materials under normal use and service, as follows: QSVB Packaged Vacuum Pumps - Twelve (12) months from date of start-up or twenty-four (24) months from date of shipment from the factory, whichever occurs first.

  • Page 7: Section I

    Every effort has been taken to ensure complete and correct instructions have been included in this manual, however, possible product updates and changes may have occurred since this printing. Quincy Compressor reserves the right to change specifications without incurring any obligation for equipment previously or subsequently sold. Not responsible for...
  • Page 8 DANGER Air from this vacuum pump will cause death or serious injury if used for breathing or food processing (if non-food grade fluid is used). Air used for these processes must meet OSHA 29CFR1910.134 regulations or FDA21CFR178.3570 regulations.
  • Page 9 IMPORTANT Throughout this manual we have identified key hazards. The following safety alert symbols identify the level of the hazard. DANGER Hazards or unsafe practices that will result in death or serious injury. WARNING Immediate hazards which could result in death or serious injury. CAUTION Hazards or unsafe practices which may result in minor injury or product or property damage.

  • Page 10: Model Identification

    SPARE PARTS ORDERING -- Coltec Industries, Quincy Compressor Division maintains replacement parts for Quincy vacuum pumps. A repair parts list is shipped with all new machines. Order parts from your Authorized Quincy distributor.

  • Page 11: Section Ii - Description

    SECTION II DESCRIPTION 1. General Description of Quincy QSVB Series Vacuum Pumps The QSVB line of rotary screw vacuum pumps covers the horsepower range of 7.5 to 25 horsepower. The vacuum pump is a single stage, positive displacement, and fluid-flooded rotary screw type unit. The vacuum pump consists of two precision machined rotors.

  • Page 12: Description Of Air Flow

    3. Description of Air Flow With the vacuum pump operating, a vacuum is produced at the pump inlet. Air entering via the vacuum pump air filter flows directly into the rotor housing where it is compressed. Compressed air passes through the complete system and is discharged through the discharge port on the reservoir housing.

  • Page 13: Vacuum Control System

    5. Vacuum Control System To gain a better understanding of how a Quincy Vacuum Pump operates, let’s assume the Quincy vacuum pump is set to operate from 20” to 23” Hg vacuum, with a lower set point of 20” Hg and an upper set point of 23”Hg differential.

  • Page 14: Auto/Demand - Optional

    The QSVB series vacuum pumps utilize 460V incoming power through an across-the-line magnetic starter. A transformer in the control panel reduces this voltage to 120 VAC for the various controls on the unit. These controls include the selector switch, vacuum switch, timer, high air temperature probe, solenoid and the various indicator lights.

  • Page 15: Safety Sensors

    WARNING High voltage could cause death or serious injury. Disconnect all power supplies before opening the electrical enclosure or servicing. 9. Safety Sensors One high air temperature (HAT) switch is standard on the QSVB units. This switch protects the unit by sensing unusually high temperatures and shutting the unit down..

  • Page 16: Gauges

    High Discharge Air Temperature Light Indicates when the unit has sensed an unusually high discharge temperature, approximately 250°F. 11. Gauges Hourmeter Indicates actual hours of operation. Used to determine maintenance intervals. Vacuum Gauge Indicates the system vacuum in inches of mercury (In. HgV) below atmospheric pressure surrounding the vacuum pump.

  • Page 17: Section Iii - Installation

    SECTION III INSTALLATION 1. Receiving Upon receipt of the vacuum pump, immediately inspect the vacuum pump for any visible damage which may have occurred in shipment. If visible damage is found at the time of delivery, be sure a notation is made on the freight bill by the delivering carrier and request a damage report.
  • Page 18 CAUTION This vacuum pump should not be operated in temperatures below 32°F or above the limits outlined in the technical data section. Do not locate the unit where the hot exhaust air from other vacuum pumps or heat generating equipment may be drawn into the unit.

  • Page 19: Piping Connections

    CAUTION Removal or modification of sound insulation will result in high sound levels which may be hazardous to personnel. The Quincy QSVB models are essentially vibration free, however, some customers may choose to bolt the unit to the floor to prevent the accidental breakage of piping or electrical connections as a result of being bumped. Only use lag bolts to locate the unit.

  • Page 20: Relief Valves

    6. Relief Valves Pressure relief valves are sized to protect the system. Never change the pressure setting or tamper with the valve. Only the relief valve manufacturer or an approved representative is qualified to make such a change. DANGER Relief valves are to protect system integrity in accordance with ANSI/ASME B19 safety standards.

  • Page 21: Electrical

    7. Electrical Before installation, the electrical supply should be checked for adequate wire size and capacity. During installation, a suitable fused disconnect switch or circuit breaker should be provided. Where a 3-phase motor is used to drive a vacuum pump, any unreasonable voltage unbalance (5%) between the legs must be eliminated and any low voltage corrected to prevent excessive current draw.

  • Page 22: Water And Sewer Facilities At The Installation Site (Water-Cooled Models Only)

    9. Water and Sewer Facilities at the Installation Site (Water-cooled models only) Make sure the water supply is connected and open. Piping supplied by the user should be at least equal to the connections provided on the vacuum pump. Cooling water should be clean and cool. Scale forming or corrosive water will shorten the life of water-cooled coolers.

  • Page 23: Fluid Level

    11. Fluid Level The vacuum pump is filled at the factory with the correct amount of fluid. A fluid tag is provided with the information concerning the initial fill of fluid. Fluid level is monitored by sight glass while in operation. Fluid level should be between the maximum and minimum level while in operation.

  • Page 24: Section Iv - Operating Procedures

    SECTION IV OPERATING PROCEDURES CAUTION Provisions should be made to have the instruction manual readily available to the operator and maintenance personnel. If, for any reason, any parts of the manual become illegible or if the manual is lost, have it replaced immediately. The instruction manual should be read periodically to refresh one’s memory.

  • Page 25: Stopping The Vacuum Pump - Normal Operation

    3. Stopping the Vacuum Pump - Normal Operation All that is normally necessary for stopping the vacuum pump is to push the “stop” button. It is advisable to install a manual shutoff ahead of the inlet valve and close it prior to turning the vacuum pump off. It will prevent the system's vacuum pressure from leaking back into the reservoir if, for any reason, the inlet valve did not close tightly.

  • Page 26: Preparing For Maintenance Or Service

    SECTION V PREPARING FOR MAINTENANCE OR SERVICE WARNING Never assume the vacuum pump is ready for maintenance or service because it is stopped. The automatic control could start the vacuum pump at any time. Death or serious injury may result. The following procedure should be used for maximum safety when preparing for maintenance or service.

  • Page 27: Section Vi - Servicing

    SECTION VI SERVICING NOTE: Only trained and qualified technicians should perform maintenance. 1. Safety Safety procedures performed while servicing the vacuum pump are important to both the service personnel at the time of servicing and to those who may be around the vacuum pump and the system it serves. Listed below are some, but not all, procedures that should be followed: •...

  • Page 28: Fluid Specifications

    3. Fluid Specifications ® ® We recommend that all Quincy rotary screw vacuum pumps be filled with QuinSyn synthetic fluid. QuinSyn ® ® QuinSyn F or QuinSyn IV is available from any authorized Quincy distributor. For applications requiring a food ®...

  • Page 29: Understanding The Analysis Report

    6. Understanding the Analysis Report a) REPORT DATE - The date that the fluid was analyzed. b) REPORT NUMBER - The assigned number to this report. c) CUSTOMER ADDRESS - The name and address of person that this report is being mailed to. This information is being taken from the sample bottle as it is received.

  • Page 31: Fluid Parameters

    FLUID PARAMETERS ® ® ® Quinsyn , Quinsyn IV & Quinsyn Property Units Test Method New Fluid Marginal Unacceptable Viscosity 40°C ASTM D-445 42-48 38, 52 <38, >52 (1) Acid No. TAN mg KOH/gm ASTM D-947 0.8-0.9 >1 (1) ADDITIVE METALS Barium Plasma Emission 5-20...

  • Page 32: Fluid Filter

    WARNING Do not mix different grades or types of fluid. Do not use inferior grades of fluids. Failure to follow these recommendations could cause serious fluid breakdown, resulting in the information of heavy varnish and sludge throughout the system. This could result in clogging the fluid separators, coolers and internal fluid passages.

  • Page 33: Vacuum Pump Air/Fluid Separator Element

    8. Vacuum Pump Air/Fluid Separator Element The element is a one piece construction that coalesces the fluid mist, as it passes through the filtering media, into droplets that fall to the bottom of the separator element to be picked up by a scavenging tube and returned to the vacuum pump.

  • Page 34: Fluid Scavenging System

    6) Touch the outside wire mesh. The indicator light should illuminate on the test or the v-o-m test must read no more than 20 ohms. 7) Touch the inside wire mesh (do not puncture the element media). The indicator light should illuminate on the test or the v-o-m test must read no more than 20 ohms.

  • Page 35: Vacuum Pump Shaft Fluid Seal

    12. Vacuum Pump Shaft Fluid Seal The QSVB vacuum pump shaft fluid seal is a triple lip and seal wear ring design. Service of the shaft seal requires replacement of the seal and seal wear ring. The shaft and wear ring rotate against the lips of the stationary seal. Both the seal and the wear ring are maintenance items.

  • Page 36: Differential Pilot Valve

    SECTION VII SERVICE ADJUSTMENTS WARNING Read all safety cautions and warnings in Section I prior to attempting any service. 1. Differential Pilot Valve By manual regulation, slowly close the valve, allowing the system pressure to reach the desired vacuum level. Adjust the screw on the bottom of the differential pilot valve so that a slight stream of air can be felt coming from the orifice adjacent to the adjustment screw.

  • Page 37: Belt Adjustment

    4. Belt Adjustment The QSVB is equipped with an automatic belt-tensioning device and requires no adjustments between belt replacements. NOTE: Belts must be replaced when automatic belt tensioning indicator dowel pin has reached full length of travel in its groove. 5.
  • Page 38 Horizontal Angular (Shafts in same horizontal plane but not parallel) To check, use straightedge or string near sheave centers. To correct, loosen motor mounting bolts and rotate motor until all four points touch straightedge. Vertical Angular (Shafts in same vertical plane but not parallel) To check, place straightedge 1/4 radius from the outside diameter of both sheaves as shown: a) Repeat on opposite side of shaft.
  • Page 39 Parallel (Shafts are parallel, sheaves are not in line) To check, use straightedge or string near sheave centers. To correct, loosen sheave and relocate on shaft until all four points touch straightedge. Tighten sheave in position. IMPORTANT: Sheave should be mounted as close to bearing as possible to reduce overhung load on bearing.

  • Page 40: Belt Replacement

    6. Belt Replacement Below are the instructions for replacing belts. These instructions must be followed to provide proper installation and proper tensioning. Complete Belt Drive Inspection Procedure as outlined in Part 5 of this section. Belt Drive Replacement Procedure (reference illustration below) Lock out and tag out the electrical power supply.

  • Page 41: Belt Tension Check

    6. Belt Tension Check The automatic belt-tensioning device is designed to maintain proper tension throughout belt life. It is recommended, however, that belt tension be checked periodically and confirmed to be within tension requirements. If belt tension is not within the limits described, contact an authorized Quincy Distributor for service. On 3V belt sections, new belt tension should read between 6.5 - 7.5 pounds deflection force and the run-in belt tension should have a reading between 4-5 pounds deflection force for 3V belt sections.
  • Page 42 Leveling Motor Base (reference illustration on page 36) Move motor base to lengthen or shorten the belt center distance, recheck alignment, then re-adjust the automatic belt tensioner spring. Screw nut (1) down to compress spring (4) in ¼ inch over solid height. NOTE: This measurement must be taken before all spring coils touch.
  • Page 43 Belt Tension Tester Quincy Part # 142645 or Gates # 7401-0076...

  • Page 44: Section Viii - Troubleshooting

    Section VIII TROUBLESHOOTING PROBABLE CAUSE CORRECTIVE ACTION Failure To Start Power not turned "ON" Turn the power "ON" by closing the main disconnect switch or circuit breaker Blown control circuit fuse Replace fuse. Find and correct cause Safety circuit shutdown resulting from Correct the situation in accordance with the instruction in the "High high discharge air temperature Discharge Air Temperature "...
  • Page 45 PROBABLE CAUSE CORRECTIVE ACTION Low Vacuum Delivery Plugged intake filter element Clean filter element or replace with new element. Excessive leaks in the service lines Check service lines for leaks with soap suds Inlet valve not fully open Check for build up or gumming of shaft Excessive vacuum demand Re-evaluate vacuum demand.
  • Page 46 PROBABLE CAUSE CORRECTIVE ACTION Frequent Air/Fluid Separator Clogging (continued) Incorrect fluid filter Use genuine Quincy replacement filters only Fluid breakdown See fluid breakdown section of this troubleshooting guide System contamination Check and clean system of all dirt, corrosion and varnish Inadequate circulation of cooling air at the Check location of cooler and assure there is no restriction to free cooler...
  • Page 47 PROBABLE CAUSE CORRECTIVE ACTION Inlet Valve Not Opening Or Closing In Relation To System Demand Improper setting of vacuum pressure Adjust vacuum pressure switch to proper setting or replace switch, if switch or faulty switch faulty Excessive moisture in control air line at Service control air line filter daily air cylinder Improper functioning of inlet valve piston Check piston and cylinder bore.
  • Page 48 PROBABLE CAUSE CORRECTIVE ACTION Excessive Water Content in Fluid Water drain intervals Drain water as needed to reduce water content in fluid below 200 PPM Discharge temperature too low Check operation of thermostatic valve or water regulating valve. If condition continues, consult factory service department Premature Belt Failure/Broken Belts Object falling into drive Provide adequate guard or drive protection...
  • Page 49 PROBABLE CAUSE CORRECTIVE ACTION Belt Noise (Belt squeals or chirps) Belt contamination Clean belts and sheaves Loose belts Check automatic tensioning device Mismatched set Install matched belt set Misaligned belts Realign sheaves Belt Noise (Rubbing sound) Guard interference Repair or replace guard Incorrect belts Use correct belt size Worn sheaves...

  • Page 50: Section Ix - Maintenance Schedule

    Section IX MAINTENANCE SCHEDULE Interval Action Periodically/Daily - 8 hours maximum Monitor all gauges and indicators for normal operation Check fluid level Observe for fluid leaks Observe for unusual noise or vibration Drain water from air/fluid reservoir Monthly Service inlet filter as needed (daily or weekly if extreme conditions exist) Clean fluid cooler fins Wipe entire unit down to maintain appearance Check belt condition and position of belt tensioning indicator roll pin in...

  • Page 51: Addendum 1 - Shell/Tube Heat Exchanger Installation And Service

    Addendum 1 - Shell and Tube Heat Exchanger Installation and Service Recommendations Installation: The satisfactory use of this heat exchanger equipment is dependent upon precautions which must be taken at the time of the installation. 1. Connect and circulate the hot fluid in the shell side (over small tubes) and the cooling water in the tube side (inside the small tubes).
  • Page 52 Addendum 1 - Shell and Tube Heat Exchanger Installation and Service Recommendations Recommendations: Replace gaskets when removing end castings. It is recommended that gaskets be soaked in oil to prevent corrosion and ensure a tight seal. Salt water should not be used in standard models. Use salt water in special models having 90/10 copper-nickel tubes, tube sheets*, bronze bonnets and zinc anodes on the tube side.
  • Page 53 QUINCY COMPRESSOR AND ORTMAN FLUID POWER DIVISIONS STANDARD TERMS AND CONDITIONS LEGAL EFFECT: Except as expressly otherwise agreed to in writing by an authorized representative of Seller, the following terms and conditions shall apply to and form a part of this order and any additional and/or different terms of Buyer’s purchase order or other form of acceptance are rejected in advance and shall not become a part...
  • Page 54 ENVIROMENTAL AND OSHA REQUIREMENTS: At the time of shipment of the equipment from the factory, Quincy Compressor / Ortman Fluid Power will comply with the various Federal, State and local laws and regulations concerning occupational health and safety and pollution. However, in the installation and operation of the equipment and other matters over which the seller has no control, the Seller assumes no responsibility for compliance with those laws and regulations, whether by the way of indemnity, warranty or otherwise.
  • Page 56 Quincy Compressor Products: 217.222.7700 © 2006 Quincy Compressor E-mail: info@quincycompressor.com All Rights Reserved. Litho in U.S.A. Website: www.quincycompressor.com...

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