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SECTION 7: WARRANTY

IMPORTANT                                                   

Please Read Carefully Before Operating

This Welch® Vacuum Pump

UNPACKING

Inspect the pump carefully. If any damage has occurred, immediately file claim with the carrier immediately. Save the 

shipping container for carrier to inspect. 

OPERATING PUMP

Refer to the enclosed Instruction/Operation Manual for all information to properly operate and maintain the pump.

WARRANTY

This Welch Vacuum product is warranted to be free from defects in material and workmanship.  The liability of Gardner 

Denver Welch Vacuum Technology  under this warranty is limited to servicing, adjusting, repairing or replacing any unit 

or component part which in the judgment of Gardner Denver Welch Vacuum Technology  has not been misused, abused 

or altered in any way causing impaired performance or rendering it inoperative. No other warranties are expressed or 

implied.  The method of executing this warranty: servicing, adjusting, repairing or replacing shall be at the discretion of 

Gardner Denver Welch Vacuum Technology .  Vacuum pumps that have been used for any period, however short, will be 

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 returned to the factory or other designated service centers, freight prepaid.

 

3. The product in our judgment is defective through no action or fault of the user.

If the product has become defective through misuse, abuse, or alteration, repairs will be billed regardless of the age of the 

product.  In this event, an estimate of the repair costs will be submitted and authorization of these charges will be required 

before the product is repaired and returned.

To reduce additional charges and delays either within or outside of the warranty period, contact Gardner Denver Welch 

Vacuum Technology  @410-712-4100 for a return authorization number.  Products without a return authorization number 

will be refused by our receiving department. Before shipping, properly pack the pump, insure it against loss or damage, 

and on the outside of the pump packaging and the packing slip write in the return authorization number.  Pumps damaged 
due to improper packaging are the customer’s responsibility.

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Summary of Contents for WELCH 2511

Page 1: ...76 8800 Fax 847 677 8606 Technical Support E Mail gdwelchvacuum gardnerdenver com Web Page www welchvacuum com Printed in USA Part No 642783 Approval Agency s Warning Not recommended for pumping acid...

Page 2: ...e failure to observe the instruction could result in damage to the equipment associated equipment and process These units confirm to the SI International system of units of measurement The following s...

Page 3: ...uum Connection 2 80 Vacuum Gauges 2 90 Traps Section 03 OPERATION 3 10 Starting Procedures 3 20 Leak Detection 3 30 Operating Pressure Range 3 40 Shutdown Procedures Section 04 MAINTENANCE 4 10 Mainte...

Page 4: ...etermining maximum air pressure for that tool or attachment applies to model 2511 only Be sure to properly identify intake and discharge before using pump See Section 2 50 WARNING Do not fill the coll...

Page 5: ...s involving a semi flexible surface such as a bench top they help to isolate noise and eliminate creeping All Aspiration Filtration Vacuum Systems should be mounted on a horizontal plane 2 40 Pump Loc...

Page 6: ...rge pressure to be set between atmospheric and the maximum possible for the pump model Model 2511 is equipped with a pressure port Note Adjusting the vacuum regulators will affect the performance of t...

Page 7: ...and off until the fault is corrected 2 63 Classification And Symbol Glossary 2 70 Vacuum Connection 2 71 For best results Welch recommends the length of the tubing between the pump and the chamber be...

Page 8: ...t vacuum level by turning the regulator knob counter clockwise to increase vacuum or clockwise to decrease vacuum Note This procedure should be performed each time you use this device 3 12 Cleaning Th...

Page 9: ...e The pump employs a non lube piston and cylinder No maintenance is necessary for the bearings All bearings are sealed and permanently lubricated Lubrication should not be attempted The units are buil...

Page 10: ...See Section 2 80 5 20 PRESSURE PROBLEMS 5 21 Leakage and contamination are the general causes of problems associated with poor pressure To operate at maximum efficiency a system must be thoroughly cl...

Page 11: ...2 Defective switch 2 Contact your service center or distributor See back page 3 Vacuum still exists 3 Disconnect tubing from the in system collection jar to release vacuum Reconnect tubing and turn o...

Page 12: ...5 2515C 75 2515C 76 Free Air Displacement CFM L min 1 2 34 1 0 28 1 2 34 Maximum Vacuum 27 2 in Hg Ultimate Vacuum 70 Torr 93 mbar Dimensions L x W x H in cm 14 8 x 8 3 x 10 Inches 37 5 x 21 x 25 5 cm...

Page 13: ...at have been used for any period however short will be repaired under this warranty rather than replaced The warranty is effective for one year from the date of original purchase when 1 The warranty c...

Page 14: ...8 11 Model 2515B 75 2515C 75 2515C 76 COLLECTION JAR LONG TUBING APPLICATION TUBING HYDROPHOBIC FILTER PUMP ON OFF SWITCH REGULATOR KNOB VACUUM GAUGE SHORT TUBING 14...

Page 15: ...15 8 12 Model 1475K 20 COLLECTION JAR LONG TUBING APPLICATION TUBING HYDROPHOBIC FILTER SHORT TUBING...

Page 16: ...10 REPAIR KITS 9 11 Repair Kit for Model 2515 Service Seal Gasket Description Kit Kit 2515K 01 2515K 02 Connecting Rod Assembly 1 1 Handle Screw 2 2 Head Screw 3 4 Head O Ring 4 1 1 Valve Plate Assem...

Page 17: ...el Adapter for dispoable tips w o ejector 1475K 03 Rubber Adapter for Pasteur pipettes 1475K 04 8 Channel Adapter for dispoable tips w ejector 1475K 05 Adapter S S 150mm 1475K 06 4 Channel Adapter S S...

Page 18: ...ription Welch Kit 115V 60Hz Maintained on off footswitch 1430A 115V 60Hz Variable on off footswitch 1430B 90 230V 50 60Hz Variable on off footswitch with IEC connections 1430C 18 Description Welch Kit...

Page 19: ...19...

Page 20: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...

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