Norm – A quick
question. A relatively minor surging incident has severely damaged our
compressor. We have experienced much worse and longer periods of surging
without noticeable damage. Why this extreme damage now?
--Harry Hambin
P.S. Regards to
Liz
Dear Henry – Hope you had a good
holiday. It could be that the main bearing lube pump is driven off of the
compressor shaft itself. Then, if the auxiliary lube oil pump failed to come-on
automatically, with the resulting low lube oil pressure (assuming the
compressor itself tripped-off due to surging and was then restarted by the
operators), this could have damaged the radically support bearings. If the
thrust bearing is not particularly damaged, this would support my theory. Hope
this helps you.
--Norm
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