pump down issues with second turbo

Im working on this 6140 lc/ms and I just started pumping it down, the pump down sequence started, my quadropole temp is at 100c, turbo 1 is at 100% speed, but turbo 2 is not on at all. The sequence stated once turbo one reached 90% turbo 2 would turn on, and once both reached 100 pump down was done, and the high vacuum gauge would turn on. Should my second turbo be on by now? Or does it take a while to get the second to turn on. Been pumping for 30min so far.
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