Changing Hazardous Area Classified AC motor bearing requirements

[srukam]

I was informed by my colleague that all motors that are classified to be used in hazardous areas (eg. EEx de etc) must have its bearing changed by certified company/personnel authorised to work on such motors. This is provided under the hazardous area protection method standards. Could you notify on such standard (such as ANSI or IEC)so that i could refer to? My knowledge is that you only need to send to authorised agent if the work involve changing of the winding and motor terminal box.

 

[dpc]

If the motor has as UL-label for hazardous location, then you probably need to check with motor manufacturer regarding bearing replacement.