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4. From the current read<strong>in</strong>gs of PA fan, we could see th<strong>at</strong> the PA fan was oper<strong>at</strong><strong>in</strong>g with utterly low<br />
efficiency. We advised to carry out the performance test<strong>in</strong>g of PA fan <strong>in</strong>situ. The performance<br />
test done <strong>at</strong> fan manufacturers’ works would be with a test rack th<strong>at</strong> is done without IGV /<br />
without a suction box. There can be duct<strong>in</strong>g eng<strong>in</strong>eer<strong>in</strong>g defect which can cause poor<br />
performance of the PA fan. Many cases have been observed to be rel<strong>at</strong>ed to poor <strong>in</strong>let conditions.<br />
Photo 2 & 3: It is seen the protective co<strong>at</strong><strong>in</strong>g by phoscast is seen dislodged. Right above the<br />
fuel nozzles only the erosion is seen. This can happen due to high fuel l<strong>in</strong>e air flow.
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