Does anyone know what to do when SEC vaccum does not reach HIGH?
dwnam at stanford.edu
Fri Aug 19 22:22:32 PDT 2011
I am trying to use SEM4160 and SEC vaccum does not go to HIGH state.
As the instruction says, I have wiped O-ring in case of leaking but it is
still not pumping down after 10,20min.
Does this happen to anyone and let me know what to do?
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