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Technical Data 

10 

2511 

Technical Data 

Parameter 

Unit 

2511

 

Pumping speed 50/60 Hz 

at atmospheric pressure

 

m

3

 / h

0.55 / 0.39 

l / min 

9.2 / 11 

Ultimate pressure 

mbar 

292 

Overpressure, max. 

bar (ü) 

3.3 

Suction-/ 

Exhaust

connection 

Hose nozzle DN 

6

for hose inside diameter 

6

 mm

Ambient temperature 

°C 

+ 10   to  + 40 

Max.  
Operating gas temperature 

+ 60 

Noise level  

DIN EN ISO 2151

 

dB (A) 

≤ 45 

Voltage / Frequency 

V / Hz 

230 / 50;   115 / 60 

Motor power 

25 

Type of protection 

DIN EN 60529

 

IP 20 

Weight 

kg 

2.0 

Dimensions (W/D/H) 

mm 

194 / 114 / 191 

Order No. for: 

WOB-L

®

 Piston pump

  230V, 50Hz

 

  

inclusive mains connection 

  cable with plug CEE and UK

 

2511C-02 

WOB-L

®

 Piston pump

  115V, 60Hz

 

  

inclusive mains connection 

  cable with plug US

 

2511B-01 

The information presented in this material is based on technical data and test results of nominal units. It is believed 
to be accurate and reliable and is offered as and aid to help in the selection of products.  
It is the responsibility of the user to determine the suitability of the product for the intended use and the user as-
sumes all risk and liability whatsoever in connection therewith. 

Gardner Denver Thomas

 GmbH does not warrant,

guarantee or assume any obligation or liability in connection with this information. 

Summary of Contents for Welch WOB-L 2511B-02

Page 1: ...Operation Manual EN Translation of the german original manual WOB L Piston pumps Models 2511C 02 2511B 01 2511 2017 05 16...

Page 2: ...t Prospect IL 60056 USA T 1 847 676 8800 F 1 847 677 8606 welch na gardnerdenver com www welchvacuum com We are constantly working on the further development of all our product models Reprinting or re...

Page 3: ...upply 8 3 2 Protection measure against liquids in the pump 9 3 2 1 Condensate separator Suction side 9 3 3 Areas of Application 9 3 4 Scope of Delivery 9 3 5 Accessories 9 4 Technical Data 10 5 Instal...

Page 4: ...done The user must authorize the operating personnel to do the work that has to be done The personnel must have read and understood the complete Operating Manual before using the WOB L Piston Pumps T...

Page 5: ...afety requirements Part 1 Compressors Part 2 Vacuum pumps DIN EN ISO 2151 2009 01 Acoustics Noise test code for compressors and vacuum pumps Engineering method grade 2 DIN EN 60204 12014 10 Safety of...

Page 6: ...connecting to the electrical power supply system The electrical power supply system must have a protective connector according to DIN VDE 0100 410 IEC 60364 4 41 The protective connector must not have...

Page 7: ...recommended for pumping acidic basic or organic va pors Poisonous Gases Use a condensate separator eg Woulff bottle when pumping poisonous or harmful gases Prevent such substances from leaking out of...

Page 8: ...e disconnection devices current output Motor is provided with a thermal overload protection ex works protecting the vacuum pump from damage or destruction respectively WARNING Should the user change t...

Page 9: ...hemical laboratories in trade and industry Use for vacuum filtration vacuum drying and other vacuum technology applications 3 4 Scope of Delivery The scope of delivery is specified in the supply contr...

Page 10: ...er No for WOB L Piston pump 230V 50Hz inclusive mains connection cable with plug CEE and UK 2511C 02 WOB L Piston pump 115V 60Hz inclusive mains connection cable with plug US 2511B 01 The information...

Page 11: ...the cooling of the pump is guaranteed see chapter 2 3 Note that on the installation location no moisture acts on the pump 5 2 2 Connecting 5 2 2 1 Electrical Connection Before the electrical connectio...

Page 12: ...he pump 5 3 2 Decommissioning If vacuum applications with special steam load the pump needs to run after the process with an open vacuum port about 2 minutes and rinsed with atmospheric air This measu...

Page 13: ...ilding up on the surface of the pump Check the electrical and vacuum connections daily 6 2 Maintenance by the Manufacturer Repairs and maintenance going beyond the extent of the work described in chap...

Page 14: ...rvice workshop Exchange Pump does not generate a vacuum or overpressure Connected apparatus and or connecting elements leaking User or Service workshop Identify and seal the leak replace the seals and...

Page 15: ...ssessment and risk reduction S curit des machines Principes g n raux pour l valuation des risques et la r duction des risques Seguridad de las m quinas Principios generales para el dise o Evaluaci n d...

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