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Important Information 

2511 

Important Information 

1.1 

General Information 

The 

WOB-L

®

 Piston Pumps

 conform to the following directives:

2006 / 42 / EC 

Machinery Directive 

20

1

4 / 

30

 / 

EU

Electromagnetic Compatibility Directive 

2014 / 68 / EU

Pressure Equipment Directive 

2014 / 29 

EU

Simple Pressure Vessels Directive 

The CE sign is located on the rating plate.  
Observe the binding national and local regulations when fitting the pump into installations! 

1.2 

Target Groups 

This Operating Manual is intended for the personnel planning, operating and maintaining 
WOB-L

®

 Piston Pumps.

This group of people includes: 

Designers and fitters of vacuum apparatus 

Employees working on commercial laboratory and industrial vacuum technology applica-
tions 

Service personnel for WOB-L

®

 Piston Pumps

The personnel operating and maintaining the WOB-L

®

 Piston Pumps must have the techni-

cal competence required to perform the work that has to be 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.

The Operating Manual must be kept at the place of use and be available to the personnel 
when required. 

1.3 

Intended Use 

The layout of the WOB-L

®

 Piston Pumps must be appropriate for the conditions of use.

The user bears the sole responsibility for this. 

The WOB-L

®

 Piston Pumps may only be operated under the conditions stated

in the "Technical Data" section,

on the type plate, and

in the technical specification for the order concerned.

WOB-L

®

 Piston Pumps are approved for extracting, pumping and compressing gases and

vapours. If these gases and vapours are toxic or explosive, then the user must observe 
the currently valid safety regulations for this application.  

1.4 

Use for an Unauthorized Purpose 

It is forbidden to use the pump for applications deviating from the technical data stated on 
the type plate or the conditions stated in the supply contract, or to operate it with missing or 
defective protective devices. 

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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