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9

 

 

Section  5:  TROUBLESHOOTING

 

 

5.1

 

Vacuum Problems

 

 

Leakage, contamination and unusual outgassing are the general causes of problems associated with poor vacuum. 
To operate at maximum efficiency a system must be thoroughly clean.  If the system is completely clean and free 
from leaks, and unwarranted vacuum problems still exist, the pump should be checked.  A simple criterion for the 
condition of the pump is the determination of its maximum vacuum capability.  This can 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 Valves

 

Corrective Action

 

 

Replace flapper valves

 

X

 

X

 

X

 

Debris in Valves

 

Remove debris and check

 

 



X

 

 



X

 

 


X

 

 

Damaged Gaskets 
Loose Head Screws 
Loose fittings

 

for valve damage 

Replace gaskets 
Tighten head screws 
Tighten fittings

 

 

Others Symptoms:

 

1.

 

Pump does not turn on -  Cause: Inlet under vacuum - Corrective Action:  Release vacuum at inlet.

 

2.

 

Pump rocks when turned off - Cause:  Inlet under vacuum - Corrective Action:  Release vacuum at inlet prior 

to turning off the pump.

 

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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