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QSVI 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. 50093-103
March 1997 Edition
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Table of Contents
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Summary of Contents for Quincy Compressor QSVI Series
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Page 1: Instruction Manual
QSVI 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
Table of Contents Standard Warranty...........................1 Safety Hazard Symbols........................2 Technical Data Sheets 1.) QSVI 25 ..........................4 2.) QSVI 40 ..........................6 3.) QSVI 50 ..........................8 4.) QSVI 75 ........................10 5.) QSVI 100........................12 6.) QSVI 200........................14 Drawings 1.) QSVI 25 (air-cooled) ...................... 16 2.) QSVI 25 (water-cooled) .................... - Page 4 8.) Auto Dual with Modulation ..................... 32 9.) Auto/Demand......................... 33 10.)Electrical System......................33 11.)Indicators and Gauges..................... 33 Section 3 - Installation 1.) Receiving ........................35 2.) Moving to the Installation Site ..................35 3.) Location......................... 35 4.) Piping Connections ......................36 5.) Piping Fit-up ........................
- Page 5 8.) Fluid Scavenging System ....................48 9.) Inlet Air Filter ........................ 49 10.)Vacuum Pump Shaft Fluid Seal..................49 Section 7 – Service Adjustments 1.) Differential Pilot Valve ....................52 2.) Vacuum Switch......................52 3.) Water Temperature Regulating Valve ................52 4.) Coupling Alignment......................
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Page 7: Standard Warranty
Standard Warranty option, to repair, replace or refund the purchase price of any product or part thereof which proves to be defective. Quincy Compressor Division If requested by Seller, such product or part thereof must Industrial Screw Products be promptly returned to Seller, freight collect for QSVI Packaged Vacuum Pumps, Airends, inspection. -
Page 8: Safety Hazard Symbols
SAFETY HAZARD SYMBOLS Important! Throughout this manual we have identified key hazards. The following symbols identify the level of hazard seriousness. ! DANGER ! Immediate hazards which will result in severe personal injury or death. ! WARNING ! Hazards or unsafe practices that could result in personal injury or death. - Page 9 Read this manual and follow all instructions prior to installing or operating this compressor. NOTICE These instructions, precautions and descriptions cover standard Quincy manufactured QSVI series direct drive air compressors. As a service to our customers, we often modify or construct packages to the customers' specifications. This manual may not be appropriate in those cases.
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Page 10: Technical Data Sheets
Technical Data Sheet - QSVI 25 General Specifications Drive Motor............................25 HP Drive System............................Direct Inlet Capacity............................365 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................35°F Inlet Connection..........................4"... - Page 11 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................5.1 GPM Total Fluid Capacity..........................15 Gallons Reservoir Fluid Capacity........................14 Gallons Discharge Temperature Range......................170 to 245°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded, 29" HgV)..................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................423 BTU/min. Cooling Fan Static Pressure.......................0.13"...
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Page 12: Qsvi 40
Technical Data Sheet - QSVI 40 General Specifications Drive Motor............................40 HP Drive System............................Direct Inlet Capacity............................550 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................35°F Inlet Connection..........................4"... - Page 13 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................6.5 GPM Total Fluid Capacity..........................15 Gallons Reservoir Fluid Capacity........................14 Gallons Discharge Temperature Range......................170 to 245°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded, 29" HgV)..................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................792 BTU/min. Cooling Fan Static Pressure.......................0.13"...
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Page 14: Qsvi 50
Technical Data Sheet - QSVI 50 General Specifications Drive Motor............................50 HP Drive System............................Direct Inlet Capacity............................730 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................35°F Inlet Connection..........................5"... - Page 15 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................8.7 GPM Total Fluid Capacity..........................15 Gallons Reservoir Fluid Capacity........................14 Gallons Discharge Temperature Range......................170 to 245°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded, 29" HgV)..................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................1,279 BTU/min. Cooling Fan Static Pressure.......................0.13"...
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Page 16: Qsvi 75
Technical Data Sheet - QSVI 75 General Specifications Drive Motor............................75 HP Drive System............................Direct Inlet Capacity............................980 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................45°F Inlet Connection..........................5"... - Page 17 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................25 GPM Total Fluid Capacity..........................38 Gallons Reservoir Capacity..........................34 Gallons Reservoir Volume ..........................20.8 Cubic Feet Normal Discharge Temperature......................190°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded).......................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................2,387 BTU/min. Cooling Fan Static Pressure.......................0.125"...
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Page 18: Qsvi 100
Technical Data Sheet - QSVI 100 General Specifications Drive Motor............................100 HP Drive System............................Direct Inlet Capacity............................1,500 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................45°F Inlet Connection..........................8"... - Page 19 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................42 GPM Total Fluid Capacity..........................45 Gallons Reservoir Capacity..........................40 Gallons Reservoir Volume ..........................25.2 Cubic Feet Discharge Temperature Range......................170 to 245°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded).......................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................3,183 BTU/min.
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Page 20: Qsvi 200
Technical Data Sheet – QSVI 200 General Specifications Drive Motor............................200 HP Drive System............................Direct Inlet Capacity............................3,000 ACFM Maximum Operating Pressure (Continuous)...................10" HgV (506 torr) Minimum Operating Pressure (Continuous)...................29.9" HgV (0.5 torr) Base Pressure............................29.9" HgV (0.5 torr) Maximum Ambient Temperature .......................110°F Minimum Ambient Temperature .......................45°F Inlet Connection..........................8"... - Page 21 Fluid System Method of Lubrication ........................Pump Fluid Flow.............................42 GPM Total Fluid Capacity..........................45 Gallons Reservoir Capacity..........................40 Gallons Reservoir Volume ..........................25.2 Cubic Feet Discharge Temperature Range......................170 to 245°F HAT Shutdown Temperature ......................250°F Fluid Carryover Rate (unloaded).......................2 PPM ® Standard Fluid............................QUINSYN Air-cooled Data Maximum Heat Rejection........................3,183 BTU/min.
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Page 22: Qsvi 25 (Air-Cooled)
QSVI 25 AIR-COOLED DIMENSIONAL DRAWING... -
Page 23: Qsvi 25 (Water-Cooled)
QSVI 25 WATER-COOLED DIMENSIONAL DRAWING... -
Page 24: Qsvi 40 (Air-Cooled)
QSVI 40 AIR-COOLED DIMENSIONAL DRAWING... -
Page 25: Qsvi 40 (Water-Cooled)
QSVI 40 WATER-COOLED DIMENSIONAL DRAWING... -
Page 26: Qsvi 50 (Air-Cooled)
QSVI 50 AIR-COOLED DIMENSIONAL DRAWING... -
Page 27: Qsvi 50 (Water-Cooled)
QSVI 50 WATER-COOLED DIMENSIONAL DRAWING... -
Page 28: Qsvi 75 (Air-Cooled)
QSVI 75 AIR-COOLED DIMENSIONAL DRAWING... -
Page 29: Qsvi 75 (Water-Cooled)
QSVI 75 WATER-COOLED DIMENSIONAL DRAWING... -
Page 30: Qsvi 100 (Air-Cooled)
QSVI 100 AIR-COOLED DIMENSIONAL DRAWING... -
Page 31: Qsvi 100 (Water-Cooled)
QSVI 100 WATER-COOLED DIMENSIONAL DRAWING... -
Page 32: Qsvi 200 (Air-Cooled)
QSVI 200 AIR-COOLED DIMENSIONAL DRAWING... -
Page 33: Qsvi 200 (Water-Cooled)
QSVI 200 WATER-COOLED DIMENSIONAL DRAWING... -
Page 34: Safety Precautions
Alterations must not be made to this vacuum pump observed with vacuum pumps and compressed air without Quincy Compressor approval. Use of parts other systems . Failure to follow any of these warnings may than those approved by Quincy for alterations, repair or... - Page 35 The fluid in the vacuum pump is the most critical Vacuum rated isolation valves should be used for component. Most vacuum pump failures are the result vacuum applications. Compressed air valves and of contaminated or deteriorated fluid. Follow vacuum valves differ in their sealing characteristics recommended fluid change schedules in normal and compressed air valves may leak in vacuum applications (air) and watch closely the condition and...
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Page 36: Section 2 - Description
Electrical System Indicators & Gauges Principles of Vacuum Pump Operation QSVI Series Vacuum Pumps As the rotors turn, air is drawn into the rotor housing through the inlet port. This volume of trapped air extends The QSVI line of rotary screw vacuum pumps are... -
Page 37: Air Flow
Air Flow Air/Fluid Reservoir & Air/Fluid Separator Element During pump operation, a vacuum is produced at the The air/fluid reservoir serves as a fluid reservoir and pump inlet. Air entering flows through the air inlet valve contains the air/fluid separator element. The discharge into the rotor housing where it is compressed, then pipe from the vacuum pump enters the reservoir at a point discharged within the air/fluid reservoir. -
Page 38: Auto Dual With Modulation
The control system remains in this state until the vacuum level in the plant system increases to 20” HgV, at which point the vacuum regulator permits more vacuum to be applied to the inlet valve air cylinder causing it to gradually close the inlet valve until the amount of air permitted into the vacuum pump is equal to the amount of air being leaked into the plant vacuum system through... -
Page 39: Auto/Demand
The QSVI series vacuum pumps utilize 460V incoming ! WARNING ! power through an across-the-line magnetic starter. A Never assume it is safe to work on the unit transformer in the control panel reduces this voltage to because it is not operating. It may be in the 120 VAC for the various controls on the unit. - Page 40 Air/Fluid Separator Differential Gauge - Indicates High Air temperature Safety Switch - A high air pressure differential across the air/fluid separator element. temperature (HAT) switch is standard on the QSVI units. Used to determine separator element change intervals. This switch protects the unit by sensing unusually high temperatures and shutting the unit down.
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Page 41: Section 3 - Installation
! CAUTION ! Section 3 – Installation Improper lifting may result in component system damage or personal injury. Follow good shop Receiving practices and safety procedures when moving the Moving the unit to the Installation Site unit. Location Piping Connections Location Safety Relief Valves Coupling Alignment –... -
Page 42: Piping Fit-Up
Piping Fit-up ! WARNING ! Under no circumstances should a vacuum pump Care must be taken to avoid assembling the piping in a be installed in an area that may be exposed to strain with the vacuum pump. Piping should line up toxic, volatile or corrosive atmosphere, nor without having to be sprung or twisted into position. -
Page 43: Electrical
Pressure relief valves are sized to protect the system. Connect incoming 3-phase power to the power block Never change the pressure setting or tamper with the supplied inside the electrical enclosure and tighten to the valve. Only the relief valve manufacturer or an approved torque specified on the side of the power block. -
Page 44: Cooling Water
Cooling Water All connections to the vacuum pump must be tight. Air leakage into the vacuum system lessens the vacuum Cooling water should be clean and cool. Scale forming or pumps ability to draw down to a base level of vacuum and corrosive water will shorten the life of water-cooled increases energy consumption. -
Page 45: Fluid Level
Fluid Level Phase Monitor The vacuum pump is filled at the factory with the correct QSVI vacuum pumps may be equipped with an optional ® amount of QUINSYN fluid. The fluid level is monitored phase monitor device to protect against low voltage, loss by a fluid level indicator located on the side of the air/fluid of phase to any power leg and an imbalance of incoming reservoir tank while in operation. -
Page 46: Section 4 - Procedures
Section 4 - Procedures pump. The vacuum pump and fan must rotate clockwise when facing the vacuum pump from the shaft end on the QSVI 25, 50, 75, 100 and 200. On QSVI 40, the rotation is Prior to Starting counter-clockwise. - Page 47 vacuum switch, this will not change the differential ! CAUTION ! set in the previous steps. Tightening the nut against Any piping, valves etc. which are attached to the the spring "I increase the range (raise the vacuum vacuum pump inlet must be clean so as to prevent level) or loosening the nut will decrease the range debris from entering the vacuum pump inlet and (lower the vacuum level).
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Page 48: Stopping The Vacuum Pump
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. If for any reason the inlet valve did not close tightly, the manual shutoff valve would prevent fluid from being sucked back into the vacuum system. -
Page 49: Section 5 - Maintenance Or Service Preparation
Section 5 – Maintenance or Service Per OSHA regulation 1910.147: The control of Hazardous Energy Source (Lockout/Tagout), Preparation disconnect and lockout the main power switch and tag the switch of the unit being serviced. Preparing for Maintenance or Service Close shut-off valve ahead of the inlet valve and after the air/fluid reservoir (if so equipped) to prevent any air flow through or pressure build up in the vacuum pump. -
Page 50: Section 6 - Servicing
Section 6 - Servicing Lubrication Each unit comes equipped with a fluid level gauge, a fluid Safety fill opening located on the side of the air/fluid reservoir Lubrication and a fluid drain located on the bottom of the reservoir. Fluid Specifications ®... - Page 51 g.) SERIAL NUMBER - The unit serial number of the !CAUTION! Quincy vacuum pump the fluid sample was taken ® Do not mix QUINSYN with any other fluid. from. Failure to follow these recommendations will cause severe fluid breakdown, resulting in the h.) MODEL NUMBER - The model number of the Quincy formation of heavy varnish and sludge vacuum pump that the fluid sample was taken from.
- Page 53 ® ® QUINSYN /QUINSYN F Specifications Property Units ASTM-Method New Lubricant Marginal Unacceptable Viscosity @ D-445 42-48 38-42 or 48-52 <38 or >52 40°C Antioxidant % Remaining Liquid <5 Level Chromatography Filtration Time Minutes >15 & >25 >25 Acid Number Mg KOH/g D-974 >1.0...
- Page 54 Vacuum Pump Fluid Filter down is at 10 " HgV, this condition requires the maximum horsepower input under strict vacuum pump The fluid filter is a spin on, full flow unit with a high operating conditions. Cold fluid or pressure in the efficiency, micro-fiberglass media.
- Page 55 Inlet Air Filter Vacuum Pump Shaft Fluid Seal Servicing of the induction filtration system shall be as The QSVI vacuum pump shaft seal is a scavenged triple recommended by the supplier of the particular system lipped shaft seal assembly, consisting of a wear ring, fluid selected for your application.
- Page 56 QSVI compressor units incorporate a fluid scavenge d.) Inspect the outer o-ring on the fluid slinger for system to complement the use of the triple lip seal cuts or nicks. assembly. Any complaint of shaft seal leakage requires that the scavenge system be inspected for proper e.) Inspect the outer o-ring on the seal adapter for operation prior to the replacement of the shaft seal.
- Page 57 4.) Preheat the seal wear sleeve to 350°F in a small oven. 4.) Using care not to damage the o-ring, evenly draw the Do not preheat in warm oil. Apply a thin film of adapter into the bore and install the four retaining LOCTITE to the inner diameter of the wear sleeve and bolts and tighten to the specified torque.
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Page 58: Section 7 - Service Adjustments
QSVI vacuum pumps (29.9" HgV without modulation). See instruction section prior to start up. Vacuum Switch The Quincy QSVI series vacuum pumps utilize a 2 The vacuum switch determines at what pressure the piece flexible element bolted to steel hubs on the pump vacuum pump will load and unload. -
Page 59: Water-Cooled Heat Exchangers
Correcting Angular Misalignment (side view) Angular Misalignment Viewed From the Top 1.) With the indicator point on the face of the motor half, 1.) Mount the dial indicator on the compressor coupling zero the indicator. half so that it reads from the face of the motor coupling half. - Page 60 In many instances, the cooling water supply for the heat Use of water-glycol mixtures will reduce heat exchange or exchanger will contain impurities dissolved in solution performance and result in increased or excessive operating and/or in suspension. These substances can cause scale temperatures.
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Page 61: Troubleshooting
Section 8 – Troubleshooting FAILURE TO START PROBABLE CAUSE CORRECTION 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 Correct the situation in accordance with the instruction in the from high discharge air temperature "High Discharge Air Temperature and/or High Fluid Injection... - Page 62 UNSCHEDULED SHUTDOWN PROBABLE CAUSE CORRECTION High air discharge temperature Correct the situation in accordance with the instruction in the "High Discharge Air Temperature and/or High Fluid Injection Temperature" section of this troubleshooting guide. Restart the vacuum pump. Thermal overload relays tripping Correct the cause of the overloaded condition, reset the overload relay and press the reset button Power failure...
- Page 63 POOR PROCESS PRESSURE PROBABLE CAUSE CORRECTION Leak Leak check system and compare to original rate of rise pressure test. Look for damaged gaskets and leaks in check/isolation valves- Check for leaks in inlet valve, and piping to airend. Pump is cold Allow adequate warm-up time for pump to reach operating temperature.
- Page 64 POOR PUMPING SPEED (Capacity) PROBABLE CAUSE CORRECTION Clogged inlet filter Replace inlet filter element. Intake line is narrow or contains Re-plumb sections of line that are narrow or sections with restrictions or debris sharp turns. Maintain pump inlet diameter as far into the process as possible.
- Page 65 HIGH DISCHARGE TEMPERATURE AND/OR HIGH FLUID TEMPERATURE PROBABLE CAUSE CORRECTION Cabinet panels removed Replace all panels, ensure all sealing surfaces and materials are satisfactory. Cooling water temperature is too Check and adjust as necessary. high Cooling radiator is dirty Clean to ensure adequate air flow across fins. Low fluid level Add fluid to required level on reservoir Operating pressure is too high...
- Page 66 INLET VALVE NOT OPENING OR CLOSING IN RELATION TO SYSTEM DEMAND PROBABLE CAUSE CORRECTION Improper setting of vacuum pressure Adjust vacuum pressure switch to proper setting or replace switch or faulty switch switch, if faulty. Improper functioning of inlet valve Check piston and cylinder bore.
- Page 67 VACUUM PUMP WILL NOT TIME-OUT OR SHUT DOWN WHEN UNLOADED PROBABLE CAUSE CORRECTION Faulty timer Check and replace as necessary. Loose wire connections Check all wiring terminals for contact and tightness. Leaks in control lines Check and repair leaks. TOO RAPID CYCLING BETWEEN LOAD AND UNLOAD PROBABLE CAUSE CORRECTION Too small system volume...
- Page 68 UNIT OPERATING WITH HIGH DISCHARGE TEMPERATURES PROBABLE CAUSE CORRECTION Clogged fluid cooler Check fluid cooler for varnishing and rust deposits. If this condition exists, clean cooler thoroughly in accordance with recommended procedures of the heat exchanger manufacturer. Excessive ambient temperatures Maximum ambient for proper operation is 110°F.
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Page 69: O-Rings
FLUID SURGES INTO VACUUM LINE AFTER SHUT-DOWN PROBABLE CAUSE CORRECTION Inlet valve not closing properly Check and repair. Install auxiliary check valve. Excessive exhaust pressure Check condition and resolve. FLUID IS CLOUDY AND PUMP RUNS HOT PROBABLE CAUSE CORRECTION Condensable in the fluid Change fluid. - Page 70 INSTALLATION INSTRUCTIONS SAE Straight Thread O-Ring Fitting (Adjustable) Inspect all mating surfaces for burrs, nicks, scratches or any foreign particles. Lubricate O-Ring with light coat of QLTINSYN 'fluid. Block lock nut until it makes contact with fitting. (See drawing below) Hand tighten fitting until back-up washer contacts face of the port and is pushed all the way toward the flange.
- Page 71 Back fitting off to desired position. Do not turn fitting more than one turn. (See drawing below) SAE Straight Thread O-Ring Fitting (Nonadjustable)\...
- Page 72 Installation Instructions Install SAE o-ring on port end of fitting. Make sure both threads and scaling surfaces are free of burrs, nicks and scratches, or any foreign material, Lubricate 0-ring with light coating of QUINSYN. Tighten fitting securely to port. NOTE: 1.
- Page 73 Back off look nut as far as possible. Make sure back-up washer is not loose and is pushed up as far as possible. Screw fitting. Hand tighten until back-up washer contacts faces of the port. To position the fitting, unscrew by required amount, but not more than one full turn. Use two wrenches, hold fitting in desired position, tighten lock nut securely.
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Page 74: Maintenance Schedule
Section 9 - Maintenance Schedule INTERVAL ACTION Monitor all gauges and indicators for normal operation. Periodically/Daily - 8 hours maximum Check fluid level. Observe for fluid leaks. Observe for unusual noise or vibration. Drain water from air/fluid reservoir. Weekly Check pressure relief valve operation. Service inlet filter as needed (daily or weekly if extreme Monthly conditions exist). - Page 76 Quincy Compressor Products: 217.222.7700 © 2008 Quincy Compressor, an EnPro Industries company E-mail: info@quincycompressor.com All Rights Reserved. Litho in U.S.A. Website: www.quincycompressor.com...
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