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Additional Installation, Operating and Maintenance Instructions (Translation)  

 

English 

 

Edition 07.2010                                                                                                                                             VEM-Ident-No. 73753 01en              

 

General 

Attention! Read installation, operation and maintenance instructions, connection diagram, 
additional connection diagram and safety regulations before transportation, installation, 
start-up, maintenance and repair. Mind the information!  

 
The existing additional operation and maintenance manual is valid together with the already mentioned doc-
uments and the operation and maintenance manual for standard motors, where the basic specifications for 
connection, installation, operation and maintenance as well as the spare parts lists are included. 
This manual shall help the user to ease the secure and proper transportation, installation, start-up and 
maintenance of the explosion-protected electric machine.  
Observance of this manual and the conditions and methods used for installation, operation, use and mainte-
nance of the electric motor can not be monitored by the manufacturer. An improper installation can result in 
property damage and thus result in personal injuries. We therefore do not accept responsibility and liability 
for losses, damages or costs resulting from improper installation, improper or wrong use and maintenance or 
connected with this in any kind.  
Technical drawings and pictures are simplified illustrations. Due to improvements and changes it might hap-
pen that they do not correspond in detail with the supplied electric machine. We strive to improve our prod-
ucts continuously. Consequently technical data and illustrations remain subject to change without prior no-
tice. Specifications may only be considered binding after written confirmation by the supplier. 

 
Symbols 

In this manual two symbols will be used, that indicate important passages: 
 

Security and warranty advices,  
possible damage to persons included. 

 

Warning against electric voltage, danger of life. 
Advice that damages to the electrical machine and/or  
the auxiliary devices can happen. 

 
Security regulations 

The security regulations, accident prevention regulations, standards and approved rules of technique must 
be observed unconditionally! 
The non-observance of the security advices can result in endangering people and/or damaging of the ma-
chine. 

 
Efficiency classes 

Listed are the IE-classes and the rated efficiency. The motor efficiency is determined according to EN 
60034-2-1. For motors < 1kW the direct measure

ment method is used. For motors ≥ 1kW the individual loss 

method is used. The additional losses of this method are determined from the residual losses. The type des-
ignation is extended with the efficiency class as prefix (example IE1-

K11R 132 M2…). 

 
Installation and electrical connection 

 

At installation and start of operation the security advices that are enclosed with the motor have to be ob-
served. Installation work shall only be done by qualified personnel who is skilled because of a technical edu-
cation, expertise and schooling of knowledge about 
 

 security regulations, 

 accident prevention regulations, 

 standards and approved rules of technique 

  (for example VDE-regulations, standards). 

 
The qualified personnel must have the ability to assess the assigned job, identify possible dangers and avoid 
them. The qualified personnel must be authorized by the person in charge for security of the plant to carry 
out the necessary work and tasks.  
 
A careful installation of the motors on an exactly level support has to be ensured to avoid strain when tight-
ening  the  machine.  Machines  that  shall  be  coupled  must  be  adjusted  exactly.  If  possible  elastic  couplings 
shall be used.   

 
 
 
 

Summary of Contents for K21B Series

Page 1: ...ee Phase Asynchronous Motors with squirrel cage rotor for low voltage applications Translation Type series K21B K23B WE1B W21B W41B Motors that comply with the Regulation 2005 32 EC and the order No 6...

Page 2: ...by the supplier Symbols In this manual two symbols will be used that indicate important passages Security and warranty advices possible damage to persons included Warning against electric voltage dan...

Page 3: ...nd shield 25 45 75 170 275 Bearing cover 5 8 15 20 20 Terminal box 4 7 5 12 5 20 Engineering design Up to size 280 the housing of the motor is manufactured as grey cast iron housing with cast in cooli...

Page 4: ...freezing of the cooling water inside the motor must be prevented For that purpose the cooling water can be drained off or an anti freeze must be added to the cooling water respectively before storage...

Page 5: ...xits from the air relief hole The filling procedure must be done carefully to make sure that no air remains inside the cooling circuit Then the air relief hole must be closed Again an appropriate seal...

Page 6: ...ero potential For design versions with condensate drain hole please observe that the drain plug screw has to be lubricated with a suitable sealant for example Epple 28 before relocking Spare parts Exc...

Page 7: ...dard design surface cooled motors are adapted for both rotational directions The connections U1 V1 W1 at phases L1 L2 L3 in alphabetical or natural order result always in clock wise rotation The sense...

Page 8: ...Additional Installation Operating and Maintenance Instructions Translation English Edition 07 2010 VEM Ident No 73753 01en 8...

Page 9: ...nance Instructions Translation English Edition 07 2010 VEM Ident No 73753 01en 9 VEM motors GmbH Carl Friedrich Gau Stra e 1 D 38855 Wernigerode phone 49 0 39 43 68 0 fax 49 0 39 43 68 21 20 email mot...

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