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Basic Safety Instructions 

2511 

2.4 

Hazardous Substances 

ACHTUNG ! 

The operating company bears the responsibility for the use of the WOB-L

®

 Piston

Pumps. 
Hazardous substances in the gases to be pumped can cause personal injuries and 
property damage. Pay attention to the warning notices for handling hazardous sub-
stances. 

The local regulations apply in foreign countries. 

Combustible, aggressive and explosive Gases 

Don’t pump combustible, especially aggressive or explosive gases or vapors or operate this 
pump in an atmosphere containing combustible or explosive gases or vapors.  
Examine before switching on whether that can form gas combustible gas/air mixtures which 
can be promoted! Consider the regulations of the guideline 1999/92/EC. 

The WOB-L

®

 Piston Pumps are not certified according to ATEX guidelines 

2014/34/EU

.

The WOB-L® piston pumps are not 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 the appliance or pump. Treat these 
substances according to the applicable environmental protection regulations. 
Test the strength and leak-tightness of the connecting lines and the connected apparatus. 
Prevent environmental poisons, e.g. mercury, getting into the pumps.  
Fulfil the requirements, for example: 

German Hazardous Substances Regulation (GefStoffV) of 01. December 2010 
Regulation

 

2016/1179/EU

(

c

lassification, 

p

ackaging and 

l

abelling

 of hazardous substances),

 

Manufacturer's safety data sheets on hazardous substances. 

2.5 

High Temperatures 

The WOB-L

®

 Piston Pumps may heat up as a result of the temperature of the gas being

pumped and through compression heat.  
Prevent the following maximum permissible temperatures from being exceeded. 

+ 40 °C for the environment, and  

+ 60 °C for the gas to be pumped. 

The electric motor has a thermal overload protection. 

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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