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venting_pumping_object_box [2023/05/30 14:31] swartzj |
venting_pumping_object_box [2023/05/30 14:32] swartzj |
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- Close the valve to the roughing pump RV. | - Close the valve to the roughing pump RV. | ||
- Now you can plot the pressure at BPG to monitor the pressure before you open the vent valve. | - Now you can plot the pressure at BPG to monitor the pressure before you open the vent valve. | ||
- | - **Keep a constant eye on the pressure level** as it increases rapidly. Before it nears 800 torr, **it is imperative that you close the venting valve.** Failure to do this will result in over pressure since the chamber will continue to be filled with dry nitrogen. | + | - **Keep a constant eye on the pressure level** as it increases rapidly. Before it nears 800 torr, **it is imperative that you close the venting valve.** Failure to do so will result in over pressure since the chamber will continue to be filled with dry nitrogen. |
- You can now enter and open the chamber. | - You can now enter and open the chamber. | ||