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Summary of Contents for Gardner Denver Welch 2090W-01
- Page 1 OWNER’S MANUAL FOR DRY VACUUM PUMPS MODELS 2090W-01 and 2085W-01 WARNING Be sure to properly identify intake and discharge before using pump. See Section 2.5. Part No. 642978 Printed in the U.S.A.
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Page 2: Table Of Contents
TABLE OF CONTENTS SECTION PAGE Safety Information Installation Operation Maintenance Troubleshooting Specifications Dimensional Drawing Exploded Views and Kits 12/13 Warranty... -
Page 3: Safety Information
Section 1: SAFETY INFORMATION Read and understand the following information and instructions included with your Welch Dry Vacuum Pumps before using. This information is for your safety and to prevent damage to the pumps. 1.1 CAUTION: To Prevent Injury... 1.1a Never operate this product if it is not working properly, has been dropped, damaged or has fallen into water, please return the product to a Welch service center for examination and repair. - Page 4 1.3 c 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.
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Page 5: Installation
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. - Page 6 2.6 Electrical Power 2.6a Power Source Review Review the power source and the motor rating to be sure they agree in voltage, phase and frequency. Serious damage may occur to the motor if it is connected to an improper voltage. All Welch pumps must be grounded. Grounding reduces the risk of electric shock in the event of an electrical short circuit.
- Page 7 2.8b The Care of a Trap When using a cold trap the refrigerant should be maintained at a high level in order to keep the trap at a uniformly low temperature. If the trap is rewarmed it may allow re-evaporation of the condensate. If the trap becomes saturated it should be disconnected from the system, drained and cleaned.
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Page 8: Operation
Section 3: OPERATION 3.1 Starting Procedures 3.1a Starting a Welch Dry Vacuum Pump. Before attaching the pump to a system it is well to familiarize yourself with the function and action of the pressure vacuum pump which you have acquired. Review the power requirements as described in Section 2.6. Welch recommends running the pump for a few minutes to warm it up before use. -
Page 9: Troubleshooting
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. -
Page 10: Specifications
Section 6: SPECIFICATIONS Welch Model 2090 2085 Free Air Displacement 4.5 (127) 6.9 (176) CFM (L/min)@60Hz Ult. Press., Torr (mbar) 25 (33) 100 (133) Max V acuum, in. Hg Number of Vacuum Stages Motor Horsepower V acuum Restart Minimum Tubing Needed, I.D. in. 7/16 7/16 Weight, lbs. -
Page 11: Dimensional Drawing
Section 7: DRAWINGS 7.1 Dimensional Drawings... -
Page 12: Exploded Views And Kits
Exploded View for 2085W-01 Parts List for 2085W-01 Diaphragm Valve Plate Item Part No. Description Service Kit Service Kit 2090K-01 2090K-02 See Note 1 Valve Keeper See Note 1 Screw-V alve Flapper-Intake See Note 1 Screw-V alve Plate See Note 1 Screw-V alve Flapper-Exhaust See Note 1 Valve Plate Gasket See Note 1... - Page 13 Exploded View for 2090W-01 Parts List for 2090W-01 Diaphragm Valve Plate Item Part No. Description Service Kit Service Kit 2090K-01 2090K-02 See Note 1 Valve Keeper See Note 1 Screw-V alve Flapper-Intake See Note 1 Screw-V alve Plate See Note 1 Screw-V alve Flapper-Exhaust See Note 1 Valve Plate Gasket See Note 1...
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Page 14: Warranty
Refer to the enclosed Instruction/Operation Manual for all information to properly operate and maintain the pump. WARRANTY This Welch product is warranted to be free from defects in material and workmanship. The liability of Gardner Denver Thomas under this warranty is limited to servicing, adjusting, repairing or replacing any unit or component part which in the judgment of Gardner Denver Thomas has not been misused, abused or altered in any way causing impaired performance or rendering it inoperative. - Page 15 Notes ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________...
- Page 16 Welch by Gardner Denver 1601 Feehanville Drive, Ste 550 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, Inc. Welch is registered trademarks of Gardner Denver...
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