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When DLN-1 Frame6B unit transfers from premix to lean lean mode during unit shutdown (when unit is un-loading), we observe that secondary flame out is happening for a moment (say 2 seconds, at least two secondary flame detectors show no flame). I need to know is it normal or secondary should not flame out?
Can you please elaborate the process that what should be normal shutdown process during this mode transfer?
Thanks,
SSV
Can you please elaborate the process that what should be normal shutdown process during this mode transfer?
Thanks,
SSV