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5

 

 

Section  2:  INSTALLATION

 

 

2.1

 

Introduction

 

 

This manual has been compiled not only for the care and maintenance of the Welch Dry Vacuum pump now in 
your possession, but as a helpful reference and guide to prevent many problems which can occur if used 
improperly.

 

 

2.2

 

Unpacking

 

 

Carefully remove the Dry Vacuum pump from the shipping case and unfasten and remove the wooden skid. 
Preserve all paperwork for future reference.  If damage has occurred from shipment a claim must be filed with the 
carrier immediately; preserve the shipping carton for inspection by the carrier.  If you are required to 
communicate with your dealer or Welch Vacuum be sure to include your order numbers for quick identification. 
Do not return the pump to the factory without first calling for a returned goods number.

 

 

2.3

 

Pump Mounting

 

 

Rubber feet are attached to the pump.  Rubber feet are excellent for applications involving a semi-flexible surface 
such as bench tops; they help to isolate noise and eliminate creeping.  T h e   2 0 9 0 / 2 0 8 5 vacuum pumps should 
be mounted in a horizontal plane.

 

 

2.4

 

Pump Location

 

 

The pressure/vacuum pump should be located preferably in a clean, dry and well ventilated area. Please be sure 
not to block the ventilation ports located on the motor housing. The pump should be placed where the surrounding 
temperature remains between 10oC and 40oC (50oF and 104oF). Always check to insure the location chose is 
protected from direct or indirect moisture contact.   Welch recommends that the pump be installed at the highest 
point within the system to prevent possible water condensate from entering the pump.  The pump should be 
located as closely to its system in order to utilize it most efficiently.

 

 

 

 

 

   

 

2.5

 

Intake and Discharge Provisions

 

 

The intake/exhaust connections are NW25 ISO vacuum flange with a 3/8"-18 NPT threaded I.D. 

 

 

 

 

WARNING

 

The motor is thermally protected and will automatically restart 

unexpectedly when the overload device resets.

 

WARNING

 

Bursting Hazard 

 Parts for use on exhaust port should be suitable 

for pressures not less than 100 PSIG

.

 

Содержание Welch 2090W-01

Страница 1: ...OWNER S MANUAL FOR DRY VACUUM PUMPS MODELS 2090W 01 and 2085W 01 Part No 642978 Printed in the U S A WARNING Be sure to properly identify intake and discharge before using pump See Section 2 5...

Страница 2: ...E OF CONTENTS SECTION PAGE 1 Safety Information 3 2 Installation 5 3 Operation 8 4 Maintenance 8 5 Troubleshooting 9 6 Specifications 10 7 DimensionalDrawing 11 8 ExplodedViews and Kits 12 13 9 Warran...

Страница 3: ...openings 1 1e This pump is thermally protected and can automatically restart when the protector resets Always disconnect power source before servicing 1 1f Wear safety glasses or goggles when operatin...

Страница 4: ...4 1 3c Never operate this product outdoors in the rain or in a wet area WARNING Failure to observe the above safety precautions could result in severe bodily injury including death in extreme cases...

Страница 5: ...ch as bench tops they help to isolate noise and eliminate creeping T h e 2 0 9 0 2 0 8 5 vacuum pumps should be mounted in a horizontal plane 2 4 Pump Location The pressure vacuum pump should be locat...

Страница 6: ...ould be used Since both models operate in the viscous flow regime the small diameter of the hose will generate minimal conductance loss For best results Welch recommends the length of the tubing betwe...

Страница 7: ...densate If the trap becomes saturated it should be disconnected from the system drained and cleaned An increase in pressure in the vacuum system will normally indicate that the trap has become saturat...

Страница 8: ...em and painting the suspected area with a water liquid dish soap solution Escaping air will produce soap bubbles 3 3 Operating Pressure Range Models 2090 and 2085 Dry vacuum pumps are designed to be r...

Страница 9: ...be accomplished by blocking of the intake and reading the vacuum level on the gauge See Section 2 8 5 2 Troubleshooting Guide Poor Pumping Speed X Poor Vacuum X Loud Unit X Possible Cause Damaged Val...

Страница 10: ...V acuum in Hg 29 26 Number of Vacuum Stages 2 1 Motor Horsepower 1 2 1 2 V acuum Restart yes yes Minimum Tubing Needed I D in 7 16 7 16 Weight lbs kg 52 23 6 52 23 6 Catalog Number 2090W 01 2085W 01...

Страница 11: ...11 Section 7 DRAWINGS 7 1 Dimensional Drawings...

Страница 12: ...ve Flapper Intake 4 15 See Note 1 Screw V alve Plate 10 16 See Note 1 Screw V alve Flapper Exhaust 4 17 See Note 1 Valve Plate Gasket 2 18 See Note 1 Valve Flapper Intake Exhaust 4 22 Connecting Rod 2...

Страница 13: ...ve Flapper Intake 4 15 See Note 1 Screw V alve Plate 10 16 See Note 1 Screw V alve Flapper Exhaust 4 17 See Note 1 Valve Plate Gasket 2 18 See Note 1 Valve Flapper Intake Exhaust 4 22 Connecting Rod 2...

Страница 14: ...repaired under this warranty rather than replaced The warranty is effective for one year from the date of original purchase when 1 The warranty card has been completed and returned 2 The product is r...

Страница 15: ..._______________________ ________________________________________________________________________________ ________________________________________________________________________________ ______________...

Страница 16: ...Mount Prospect IL 60056 Phone 847 676 8800 Technical Support Fax 847 677 8606 E Mail gdwelchvacuum gardnerdenver com Web Page www welchvacuum com Copyright 2013 Gardner Denver Welch Vacuum Technology...

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