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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)

1.

 

Lock out and tag out the electrical power supply.

2.

 

Remove panels and guards to gain access to belt drive area.

3.

 

Do not change the location of nut (1) or nut (2).  If nut (1) or nut (2) have been tampered with, refer to motor
base instructions on page 38.

4.

 

Loosen nut (3) and lower motor plate until nut (3) contacts nut (1).

5.

 

Remove existing belts by rolling off drive sheaves.

6.

 

Install new belts by rolling into position on the sheaves. NOTE:  The spring (4) will compress to allow the belts
to cross into the grooves in the sheaves.

7.

 

Raise the motor into position by adjusting nut (3) until the pin (5) just reaches the bottom of the groove.

8.

 

Check belt tension – Lock the height adjustment with nut (2).

9.

 

Operate vacuum pump to check adjustment.

10.

 

Operate the vacuum pump for a few minutes to seat the belts to the groove. Observe the operation of the drive
during start-up and full load operation (highest load conditions).  Immediately upon shut-down, check
temperature of belts by hand.  If belts cannot be comfortably touched (heat build-up is an indication of
misalignment) refer to Part 5 of this section (Belt Drive Inspection Procedure) and correct prior to operating
unit.

Summary of Contents for QSVB Series

Page 1: ...s 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...

Page 2: ......

Page 3: ...rs 8 Vacuum Control System 9 Auto Dual with Modulation 9 Auto Demand Optional 10 Electrical System Description 10 11 Safety Sensors 11 Indicators 11 12 Gauges 12 SECTION III INSTALLATION Receiving 13...

Page 4: ...sample 26 Fluid Parameters 27 Fluid Filter 28 Vacuum Pump Air Fluid Separator Element 29 Continuity Testing of Separator Elements 29 30 Fluid Scavenging System 30 Air Filter 30 Vacuum Pump Shaft Flui...

Page 5: ...1 MODEL IDENTIFICATION QSVB...

Page 6: ...price of any product or part thereof which proves to be defective If requested by Seller such product or part thereof must be promptly returned to Seller freight collect for inspection Seller warrants...

Page 7: ...air filter or any parts Do not attempt to service any part while the vacuum pump is operating Do not operate the vacuum pump at sump pressures in excess of its rating Do not remove any guards or canop...

Page 8: ...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 FDA21C...

Page 9: ...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...

Page 10: ...e frame and in the upper right corner inside of the control panel door SPARE PARTS ORDERING Coltec Industries Quincy Compressor Division maintains replacement parts for Quincy vacuum pumps A repair pa...

Page 11: ...opping as found in reciprocating vacuum pumps The vacuum pump consists of two rotors in constant mesh housed in a cylinder with two parallel adjoining bores The male drive rotor has four lobes that me...

Page 12: ...d aluminum tube design Ambient air is forced through the fins by a motor driven fan cooling the fluid in the tubes To maintain proper vacuum pump operation the temperature of the ambient air should no...

Page 13: ...een 20 Hg to 23 Hg If the vacuum pump stops during operation either manually by pressing the stop button or automatically due to a high temperature condition a check valve feature in the inlet valve p...

Page 14: ...Description A diagram of the electrical system is shown in the parts manual sent with the vacuum pump A wiring diagram is also included in the control panel on all Quincy QSVB vacuum pumps NOTE Due t...

Page 15: ...djustable WARNING Never remove bypass or tamper with this safety HAT switch Failure to provide this safety feature could cause death serious injury and or property damage If the vacuum pump is shuttin...

Page 16: ...mixture as it discharges from the vacuum pump Normal reading is 190 F to 210 F Air Fluid Separator Differential Gauge Indicates pressure differential across the air fluid separator element Used to det...

Page 17: ...not attempt to lift the unit by attachment to any components NOTE See technical data for detailed technical information and dimensions CAUTION Improper lifting may result in component system damage or...

Page 18: ...oom is not properly ventilated the vacuum pump operating temperatures will increase and cause the high temperature probe to shut the unit off CAUTION Clean fresh air insufficient quantity is required...

Page 19: ...ted engineering practices Improperly designed distribution systems can cause damage to the vacuum pump Exhaust piping should be installed in such a manner as to not create additional back pressure on...

Page 20: ...tandards Failure to provide properly sized relief valves will result in death or serious injury Relief valves are to be placed ahead of any potential blockage point that includes but is not limited to...

Page 21: ...grounding units to building structure steel may not actually provide adequate grounding protection as paint and corrosion build up may exist CAUTION NEMA electrical enclosures and components must be a...

Page 22: ...in the discharge water line WARNING Relieve vacuum pump and system vacuum by opening the appropriate manual relief valve prior to servicing Failure to relieve all system pressure could result in death...

Page 23: ...or three revolutions Observe the drive element for correct direction If incorrect rotation is observed lock out power supply reverse electrical leads L1 and L3 at the motor starter Re check for correc...

Page 24: ...els and guards are in place and securely mounted Check fuses circuit breakers and thermal overloads for proper size After all the above conditions have been satisfied close the main power disconnect s...

Page 25: ...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 This...

Page 26: ...ng for maintenance or service 1 Disconnect and lockout the main power switch and tag the switch of the unit being serviced 2 Close shut off valve block valve between receiver and plant vacuum system t...

Page 27: ...not operate the vacuum pump until the source has been identified and corrected 2 Lubrication Each unit comes equipped with a fluid level sight gauge fluid fill opening and a fluid drain located in th...

Page 28: ...is a fluid analysis This analysis provides the end user with important information regarding the performance of the fluid and in detecting any special problems that might arise Fluid samples should b...

Page 29: ...re the actual hours that the fluid has been in the unit since the last fluid change j HOURS ON MACHINE This is the total hours on the vacuum pump hourmeter k SAMPLE DATE The date that the sample was t...

Page 30: ...26...

Page 31: ...nc PPM Plasma Emission 0 100 200 200 WEAR METALS Silver PPM Plasma Emission 0 5 10 10 Aluminum PPM Plasma Emission 0 5 10 10 Chromium PPM Plasma Emission 0 5 10 10 Copper PPM Plasma Emission 0 5 10 10...

Page 32: ...it with a new one USE GENUINE QUINCY REPLACEMENT FILTERS ONLY The initial filter change should occur after the first 500 hours of operation During normal service the filter cartridge should be replac...

Page 33: ...exceeds the pressure given above will result in blown or tripped overload fuses and or shortened electric motor life WARNING Do not remove the staples from the separator element Their function is to p...

Page 34: ...moving through the sight glass When excessive fluid carryover is detected Every fluid change Once per year NOTE Do not ream the orifice or change the orifice size Do not install the orifice reversed 1...

Page 35: ...mber 129231 Note Shaft seal replacement tool kit part number 129216 can be purchased through your local Quincy Distributor 5 Remove the triple lip seal from the faceplate New Seal Installation 1 Thoro...

Page 36: ...these pressures If a lower setting is desired adjust the differential pilot valve first and set the pressure switch cut out point to no more than 2 HgV differential The adjustment is made by turning...

Page 37: ...n dry capscrews evenly and alternately Use no lubricants in this installation Excessive capscrew tightening can cause sheave and or bushing breakage Rotate pulleys to check for sheave runout wobble or...

Page 38: ...ne but not parallel 1 To check place straightedge 1 4 radius from the outside diameter of both sheaves as shown a Repeat on opposite side of shaft b Straightedge should touch four points indicated in...

Page 39: ...ate 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 Relocate equipmen...

Page 40: ...ting belts by rolling off drive sheaves 6 Install new belts by rolling into position on the sheaves NOTE The spring 4 will compress to allow the belts to cross into the grooves in the sheaves 7 Raise...

Page 41: ...e taking belt tension measurements At center of span t apply force with Tension Tester perpendicular to the span large enough to deflect one belt on the drive until the bottom edge of the lower o ring...

Page 42: ...sition on the sheaves NOTE The spring 4 will compress to allow belts to cross into the grooves in the sheaves 5 Raise motor platform arm by turning nut 3 until the slack has been removed from the belt...

Page 43: ...39 Belt Tension Tester Quincy Part 142645 or Gates 7401 0076...

Page 44: ...ty High Air Temperature Switch Check H A T switch Contact a qualified service technician for repairs Faulty transformer Check secondary voltage on transformer Unscheduled Shutdown High air discharge t...

Page 45: ...sealing surfaces and materials are satisfactory Faulty thermal valve Replace thermal valve element Cooler plugged Clean cooler find and correct cause of contamination Cooling water temperature is too...

Page 46: ...through the cooler Reverse motor starter leads L1 and L2 Improper fluid Use recommended fluids only Refer to lubrication section of manual Clogged air filter Clean or replace as necessary Faulty ther...

Page 47: ...h setting Adjust to proper setting Faulty vacuum pressure switch Replace switch Faulty solenoid valve Repair or replace as necessary Faulty differential pilot valve Repair or replace as necessary Leak...

Page 48: ...as necessary Center distance movement Check drive for center distance movement during operation Edge Cord Failure Sheave misalignment Check alignment and correct as necessary Damaged tensile member Fo...

Page 49: ...in sheaves Clean sheaves and improve shielding Belt Noise Belts flopping Incorrect belts Use correct belt size Mismatched belts Install new matched belt set Sheave misalignment Align sheaves as neces...

Page 50: ...f belt tensioning indicator roll pin in slot Replace belts as necessary 6 months or every 1000 hours Take fluid Sample Change fluid filter element Every 2000 hours Check roll pin indicator position in...

Page 51: ...ly Dirt and debris can plug the water passages very quickly rendering the cooler ineffective Write the factory for water strainer recommendation 6 Fixed bundle heat exchangers are generally not recomm...

Page 52: ...o drain the water chambers of the exchanger to protect it from damage by freezing temperatures Drains are provided in most standard models The oil chamber of the exchanger may become filled with sludg...

Page 53: ...nt according to percentage of completion Equipment held for Buyer shall be at Buyer s risk and storage charges may be applied at the discretion of Seller Accounts past due shall bare interest at the h...

Page 54: ...roduct or part thereof must be promptly returned to seller freight prepaid for inspection Seller warrants repaired or replaced parts of its own manufacture against defects in materials and workmanship...

Page 55: ......

Page 56: ...2006 Quincy Compressor All Rights Reserved Litho in U S A Quincy Compressor Products 217 222 7700 E mail info quincycompressor com Website www quincycompressor com...

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