Quincy compressor Qsvi series User 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.

Manual No. 50093-103

March 1997 Edition

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) ..................................................................................................17

3.) QSVI 40 (air-cooled) ......................................................................................................18

4.) QSVI 40 (water-cooled) ..................................................................................................19

5.) QSVI 50 (air-cooled) ......................................................................................................20

6.) QSVI 50 (water-cooled) ..................................................................................................21

7.) QSVI 75 (air-cooled) ......................................................................................................22

8.) QSVI 75 (water-cooled) ..................................................................................................23

9.) QSVI 100 (air-cooled).....................................................................................................24

10.)QSVI 100 (water-cooled) ................................................................................................25

11.)QSVI 200 (air-cooled).....................................................................................................26

12.)QSVI 200 (water-cooled) ................................................................................................27

Section 1 - General

1.) Safety Precautions ..........................................................................................................28

2.) Model Identification........................................................................................................28

Section 2 - Description

1.) QSVI Vacuum Pumps.....................................................................................................30

2.) Principles of Vacuum Pump Operation.............................................................................30

3.) Air Flow ........................................................................................................................31

4.) Fluid Flow & Cooling System.........................................................................................31

5.) Fluid Coolers..................................................................................................................31

6.) Air/Fluid Reservoir, Element...........................................................................................31

7.) Vacuum Control System..................................................................................................31

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 ..................................................................................................................36

6.) Pressure Relief Valves....................................................................................................36

7.) Electrical........................................................................................................................37

8.) Pneumatic Circuit Breakers.............................................................................................37

9.) Guards ...........................................................................................................................37

10.)Water Piping..................................................................................................................37

11.)Cooling Water................................................................................................................37

12.)Safety Labels/Decals.......................................................................................................38

13.)Instruction Manual..........................................................................................................38

14.)Induction System............................................................................................................38

15.)Fluid Level.....................................................................................................................39

16.)Vacuum Pump Rotation ..................................................................................................39

17.)Phase Monitor ................................................................................................................39

Section 4 - Procedures

1.) Prior To Starting.............................................................................................................40

2.) Starting the Vacuum Pump..............................................................................................40

3.) Stopping the Vacuum Pump............................................................................................41

4.) Emergency Stop .............................................................................................................42

Section 5 – Maintenance or Service Preparation

1.) Preparing for Maintenance or Service ..............................................................................43

Section 6 - Servicing

1.) Safety............................................................................................................................44

2.) Lubrication.....................................................................................................................44

3.) Fluid Specifications ........................................................................................................44

4.) Fluid Life.......................................................................................................................44

5.) Understanding the Analysis Report..................................................................................45

6.) Vacuum Pump Fluid Filter ..............................................................................................48

7.) Vacuum Pump Air/Fluid Separator Element.....................................................................48

iii

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........................................................................................................52

5.) Water-cooled Heat Exchangers........................................................................................53

Section 8 – Troubleshooting

1.) Troubleshooting..............................................................................................................55

2.) O-rings...........................................................................................................................63

Section 9 – Maintenance Schedule

1.) Maintenance Schedule ....................................................................................................68

Standard Warranty

Quincy Compressor Division

Industrial Screw Products

QSVI Packaged Vacuum Pumps, Airends,

Remanufactured Airends and

Vacuum Pump Parts

Seller warrants products of its own manufacture against

defects in workmanship and materials under normal use

and service, as follows:

QSVI Packaged Units

Twelve (12) months from date of start-up or twenty-four

(24) months from date of shipment from the factory,

whichever occurs first.

Basic Vacuum Pump

Twenty-four (24) months from date of start-up or thirty-six

(36) months from date of shipment from the factory,

whichever occurs first.

Remanufactured Basic Vacuum Pump

One (1) year from date of shipment from factory.

Parts

Ninety (90) days from date of Distributor sale or one (1)

year from date of factory shipment, whichever occurs first.

With respect to products not manufactured by Seller,

Seller will, if practical, pass along the warranty of the

original manufacturer.

Notice of the alleged defect must be given to Seller in

writing with all identifying details including serial number,

model number, type of equipment and date of purchase,

within thirty (30) days of the discovery of same during the

warranty period.

Seller’s sole obligation on this warranty shall be, at its

option, to repair, replace or refund the purchase 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 factory repaired or replaced parts of its

own manufacture against defects in material and

workmanship under normal use and service for ninety (90)

days or for the remainder of the warranty on the product

being repaired, whichever is longer.

This warranty shall not apply and Seller shall not be

responsible nor liable for:

(a) Consequential, collateral or special losses or

damages;

(b) Equipment conditions caused by fair wear and tear,

abnormal conditions of use, accident, neglect or

misuse of equipment, improper storage or damages

resulting during shipment;

or other special terms of sales;

(d) Labor charges, loss or damage resulting from

improper operation, maintenance or repairs made by

person(s) other than Seller or Seller’s authorized

service station.

(e) Improper application of product.

In no event shall Seller be liable for any claims, whether

arising from breach of contract or warranty of claims of

negligence or negligent manufacture, in excess of the

purchase price.

THIS WARRANTY IS THE SOLE WARRANTY OF

SELLER AND ANY OTHER WARRANTIES, EXPRESS,

IMPLIED IN LAW OR IMPLIED IN FACT, INCLUDING

ANY WARRANTIES OF MERCHANTABILITY AND

FITNESS FOR PARTICULAR USE, ARE HEREBY

SPECIFICALLY EXCLUDED.

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.

! CAUTION !

Hazards or unsafe practices that could result in minor personal injury,

product or property damage.

! WARNING !

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.

NOTE:

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 typographical errors.

Reference to the machine MODEL, SERIAL NUMBER and DATE OF ORIGINAL START-UP must

be made in all communication relative to parts orders or warranty claim. The model/serial number plate is

located on the vacuum pump base.

Spare Parts Ordering Information

Coltec Industries, Quincy Compressor Division maintains replacement parts for Quincy compressors. A repair

parts list is shipped with all new machines. Order parts from your Authorized Quincy distributor. Use only

genuine Quincy replacement parts. Failure to do so may void warranty.

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" NPT

Discharge Connection........................................................................................................................4" NPT

Rotor Diameter.....................................................................................................................................204 mm

Rotor Length........................................................................................................................................316 mm

Rotor Speed – Male ............................................................................................................................1,760 RPM

Rotor Speed – Female.........................................................................................................................1,174 RPM

Tip Speed..............................................................................................................................................18.8 meters/sec.

Intake Male Bearings..........................................................................................................................Cylindrical Roller Bearings (x 1)

Discharge Male Bearings...................................................................................................................Tapered Roller Bearings (x 3)

Intake Female Bearings.......................................................................................................................Cylindrical Roller Bearings (x 1)

Discharge Female Bearings................................................................................................................Tapered Roller Bearings (x 2)

Displacement at Operating Speed.....................................................................................................398 CFM

Volumetric Efficiency..........................................................................................................................91.7%

Electrical Data

Full Load Package BHP (Air-cooled)................................................................................................16.2 BHP

Package Electrical Consumption – Air.............................................................................................14.4 KW

Full Load Package BHP (Water-cooled)..........................................................................................15.8 BHP

Package Electrical Consumption – Water........................................................................................14.1 KW

Drive Motor Service Factor...............................................................................................................1.15

Drive Motor Speed..............................................................................................................................1,760 RPM

Fan Motor BHP....................................................................................................................................0.4 BHP

Specific Power - Air-cooled...............................................................................................................4.4 BHP/100

Specific Power - Water-cooled..........................................................................................................4.3 BHP/100

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" H2O

Fan Motor.............................................................................................................................................0.5 HP

Fan RPM...............................................................................................................................................3,450

Fan Flow...............................................................................................................................................800 CFM

Water-cooled Data

Water Flow – 50°F...............................................................................................................................1 gal./min.

Water Flow – 70°F...............................................................................................................................1.5 gal./min.

Water Flow – 90°F...............................................................................................................................2 gal./min.

Maximum Water Temp. Rise @ 1 GPM............................................................................................50.7°F

Recommended Water Pressure .........................................................................................................40 to 100 psig

Water Pressure Drop @ Max. Flow..................................................................................................0.1 psi

Water Connections.............................................................................................................................1" NPT

Sound Level

Unenclosed – Air................................................................................................................................78 dB (A)

Unenclosed – Water...........................................................................................................................N/A

Standard Enclosure – Air...................................................................................................................71 dB (A)

Standard Enclosure – Water..............................................................................................................N/A

Maximum Dimensions

Length...................................................................................................................................................79"

Width....................................................................................................................................................48"

Height....................................................................................................................................................58.5"

Weight..................................................................................................................................................2,362 lbs.

Technical Data Sheet - QSVI 40

General Specifications

Drive Motor..........................................................................................................................................40 HP

Drive System........................................................................................................................................Direct

Inlet Capacity.......................................................................................................................................550 ACFM