XZ drive failure in Ion Chromatography of Thermo Scientific make

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In an reputed pharma company, in IC system, XZ drive failure was observed. 


Root cause analysis: 

The system was shutdown for about 8 months. So initially it was not known that why such thing happened.

Just as instrument was started and XZ drive failure took place.

During investigation it was found that earthing observed as 2.4 ohms which is more than the requirement of NMT 1 ohms.


Actually at the time of installation it was 1.4 ohms two years back.


Due to increase in load, earthing increased upto 2.4 ohms which resulted in failure of XZ drive of IC instrument. 


Cost of new drive is about $ 9000.


Precaution:

It is highly advisable to keep close check on earthing during operation of sophisticated instruments like IC system otherwise it can result in high costly affair.


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