GC-MS 5973 won't pump down. Foreline pump turns off after ~10min



I am having a problem pumping down GC-MSD 5973.


The GC-MSD was turned off over the weekend and on Monday when I tried to pump down, the foreline pump automatically turns off after about ~10 minutes.

From the pump down status, I can see that the turbo pump in fact reaches 100%.

Any help on the situation is appreciated.

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