Ion source chamber doesn't want to open after venting the MS

Hi All,

I have a huge problem with ion source chamber opening. I need to clean the ion source and after venting the GC MS and unfastening the side plate thumbscrews the side plate doesn't move (as if there still was a vacuum).
It never happened before (the source was cleaned regularly, most recently under the supervision of a service technician).
What can I do to open it without the need for a servicing call?

Thank you for you help

Regards Anna

Parents Reply
  • See, if vent properly done properly, vaccum released from vent knob then after swtiching of rough pump off..

    After this there are thumb screws in side plate of loosing front n back thumb screw, it should be easily opened.

    If not opening then either it stuck in top side.see below pic.

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