Welch-vacuum 8925 Direct Drive Rotary Vane Pump Manuel d'utilisateur

OWNER’S MANUALFORDIRECTORR® DIRECT-DRIVE VACUUM PUMPMODELS:890589078912891789208925Gardner Denver Welch Vacuum Technology, Inc.5621 W. Howard StreetNi

102.06 Intake Antisuckback Protection When power to the pump is turned off, this device closes automatically, maintaining vacuum in the system bei

112.10 UNIBARBTM Intake Fitting - Simplies Small Hose Connections The Unibarb intake tting allows the user to be able to use either 7/16” or 13/1

12Section 3: PUMP SPECIFICATIONS3.01 Specication Chart* Partial measurement based upon the American Vacuum Society Test Procedure No. AVS 5.1-1963

13* Partial measurement based upon the American Vacuum Society Test Procedure No. AVS 5.1-1963 using a trapped McLeod Gauge. SPECIFICATION 8907 89

14Section 4: MOTOR SPECIFICATIONS, POWER / FEATURES4.01 Motor Specication ChartCat. No.Voltage Freq. Ph. H.P. Factory Wired forSpecial FeatureAppro

154.02 Changing the Voltage Setting on 8907, 8912 and 8917 “A”- Models only The pumps are set for low voltage (LV) 115 volts 60 Hz. They may also

164.04 Changing the Voltage Setting on 8905, 8920 and 8925 “A”- Models only The vacuum pump motor is factory wired to for 115 V for models which ope

17Section 5: OPERATION5.01 Starting Procedure Before using the pump for the rst time, it is a good idea to spend a few minutes inspecting the pump

18Section 6: MAINTENANCE6.01 Vacuum Problems Inability to attain sufcient vacuum in a system is usually due to leakage, contamination, or unusual

196.02 Oil Change The best time to change the oil is when the pump is warm and the oil is less viscous. Before attempting an oil change, the pump

INSTRUCTIONWARNING AND CAUTIONPLEASE READ BEFORE OPERATIONWhile reading your manual, please pay close attention to areas labeled: WARNING AND CAUTION.

206.04 Lip Seal / Gasket change Changing the Lip Seal and Gasket for 8905 When the shaft seal in the mounting plate shows signs of excessive oil le

21 Changing the Lip Seal and Gasket for 8907, 8912 and 8917 When the shaft seal in the mounting plate shows signs of excessive oil leakage, it shoul

22 11. REPLACE THE LIP SEAL HOUSING a) It is recommended that you use 3 lockwashers to secure the LIP SEAL HOUSING. Uniform tightness i

23 Changing the Lip Seal and Gasket for 8920 and 8925 When the shaft seal in the mounting plate shows signs of excessive oil leakage, it should be r

24Section 7: TROUBLE SHOOTING7.01 Leak Detection Problems The importance of eliminating all leaks in a vacuum system is obvious when it is realized

257.02 Trouble Shooting GuideCondition Probable Cause Recommended Corrective Action1. Power off. 1. Check switches and fuses.Pump 2. Coupling damaged

26Section 8: REPAIR KITS8.01 Shaft Seal Replacement When the shaft seal in the mounting plate shows signs of excessive oil leakage, it should be re

27Section 9: ACCESSORIES9.01 Pump Oil When the shaft seal in the mounting plate shows signs of excessive oil leakage, it should be replaced. Bef

28Section 10: DRAWINGS AND SPEED CURVE10.10 Speed Curve

2910.20 Dimensional DrawingPump Model A B C D E F G H I J K L M N O P Q R S8905A 14.13 8.70 5.52 4.07 5.73 6.81 3.16 0.54 5.58 1.56 6.76 8.70 0.95 0.

TABLE OF CONTENTS SECTION PAGESection 01 - Installation 05 1.01 Unpacking 05 1.02 Pump Mounting

3010.30 Exploded Views and Parts List for 8905AItem # Qty. P/N Note A*) Description1 2 62-1014 Screw, Flat Hd #32x3/82 1 61-2370 Window Holder3 1 61-

3110.31 Exploded Views and Parts List for 8907AItem # Qty. P/N Description1 4 62-0325 Screw, Socket Hd. M6x20 Blk.2 1 61-6443 Oil Case Assembly3 1 61

3210.32 Exploded Views and Parts List for 8912AItem # Qty. P/N Description1 4 62-0325 Screw, Socket Hd. M6x20 Blk.2 1 61-6443 Oil Case Assembly3 1 61

3310.33 Exploded Views and Parts List for 8917AItem # Qty. P/N Description1 4 62-0325 Screw, Socket Hd. M6x20 Blk.2 1 61-6443 Oil Case Assembly3 1 61

3410.34 Exploded Views and Parts List for 8920AITEM QTY P/N A* B* DESCRIPTION ITEM QTY P/N A* B* DESCRIPTION1 2 62-1014SCREW FLAT HD #8-32x3/844 2 41

3510.35 Exploded Views and Parts List for 8925AITEM QTY P/N A* B* DESCRIPTION ITEM QTY P/N A* B* DESCRIPTION1 2 62-1014SCREW FLAT HD #8-32x3/8482 61-

3610.40 Exploded Views and Parts List for Pump Module 61-6168

3710.41 Exploded Views and Parts List for Pump Module 61-6435

10.42 Exploded Views and Parts List for Pump Module 61-635438

10.50 Exploded Views and Parts List for Oil Case 61-6443ITEM QTY P/N A* B* DESCRIPTION69 2 62-1014 SCREW COUNTER SINK #8-32 x 3/8"70 1 61-6009

4TABLE OF CONTENTS SECTION PAGESection 06 - Maintenance 18 6.01 Vacuum Problems 18 6.02 Oil Change

Section 11: WARRANTYUNPACKING Inspect the pump carefully. If any damage has occurred, le claim with the carrier immediately. Save the shipping co

41Section 12: MSDS SHEET FOR 8995PTHE INFORMATION HEREIN IS GIVEN IN GOOD FAITH, BUT NO WARRANTY, EXPRESS OR IMPLIES, IS MADE.Revision Date: 02/10/04

42THE INFORMATION HEREIN IS GIVEN IN GOOD FAITH, BUT NO WARRANTY, EXPRESS OR IMPLIES, IS MADE.Revision Date: 02/10/04 Rev. 4 P/N:

43THE INFORMATION HEREIN IS GIVEN IN GOOD FAITH, BUT NO WARRANTY, EXPRESS OR IMPLIES, IS MADE.Revision Date: 02/10/04 Rev. 4 P/N:

44THE INFORMATION HEREIN IS GIVEN IN GOOD FAITH, BUT NO WARRANTY, EXPRESS OR IMPLIES, IS MADE.Revision Date: 02/10/04 Rev. 4 P/N:

45NOTES_______________________________________________________________________________________________________________________________________________

USA, Canada, Latin AmericaGardner Denver Thomas, Inc.,Welch Vacuum Technology5621 W. Howard St.Niles, IL 60714 USAPhone: 847-676-8800Fax: 847-677-8

5Section 1: INSTALLATION1.01 Unpacking Carefully remove the pump from the shipping carton. Keep all paperwork and inspection tags for future ref

61.05 Electric Power For Model 8905 Compare the pump motor rating, printed on a label on the side of the motor and on the serial number tag, to t

71.06 Vacuum Connections The pump inlet is equipped with a UNIBARBTM 7/16” and 13/16” hose tting. The inlet is located next to the pump handle.

8Section 2: PUMP FEATURES AND PRINCIPLES OF OPERATION2.01 General Description All of the Welch Vacuum Pumps are two-stage, rotary-vane, oil sealed

92.03 Effects of Continued Pressure Reduction The quantity of gas in the vessel (6) is reduced with each evacuation cycle. The gas remaining in the