We have a 9FA GT getting cranked for the first time through LCI. Barring gear operation was earlier checked and found ok. While cranking speed could go up to 9 rpm and then keeps varying between 6-9 rpm. Static starter voltage waveforms were checked and found to be ok. Phase sequence was also checked and found ok. Looking for probable causes - fast.

 

It seems from other posts you have solved this problem.

Can you please tell us what was found and how the issue was resolved?

Thanks!

 

I am not sure if this is the correct reason - you know how commissioning engineers camouflage facts from owners engineers - The MW transducer feeding into Mark-VI is multiplexed in speedtronic and fed to LCI as well. Presumably the wire connection to LCI was swapped - kindly confirm from your experience/expertise if this makes sense - if yes we should close the thread. Thanks for your interest and help.