exhaust frame blower motor for GE 7FA Turbine

  • Thread starter Mohammed Akbar Khan
  • Start date
M

Thread Starter

Mohammed Akbar Khan

I am working as maintenance engineer in power plant with GE 7FA Turbine. We have facing problems with the Exhaust frame blower. Its taking 120% current during start up and after turbine loading its going down to its design range.

Is this any thing to do with its impeler and volute position?
It is also having high vibration.
 
B

Bob Johnston

Of course you will get high starting current, but only for around the first 10 seconds. As you mentioned high vibration, I'm a little suspicious that it is not load related, but bad bearings on the blower. We have had a lot of problems with bearing on two blowers which only were a year old. Talk to yer local bearing supplier (SKM or someone) and see if you can get a better bearing also check the alignment on your blower. Hope this helps.
 
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