1. Ensure that the temperature shown on the panel is below 50 ℃.
This is to avoid oxidation of your sample.

2. Press the "STOP" button on the Vacuum Power Unit.

3. Untighten the Vacuum Door
Otherwise, the pressure will be overbuilt up in the chamber and the vacuum door cannot be open.

4. Ensure that the N₂ gas cylinder is turned off.
It should be turned off if you follow the procedures of "How to Pump Down the Chamber".

5. Disconnect the gas pipeline from the rough pump by pressing the blue button.

6. Adjust the N₂ gas cylinder to ~ 0.5 bars.
The left gauge shows you the pressure of the outlet, while the right gauge indicates the amount of remaining N₂ gas.

7. Connect the N₂ gas pipeline to the UHV Heating Chamber.

8. Open the Gas Outlet knob for venting the UHV Heating Chamber.
The UHV heating chamber should not be vented by atmospheric air because it will inevitably introduce hydrocarbons and water vapor into the chamber.

9. Wait for 30-40 minutes on the spot until the vacuum window is slightly open.
The venting will speed up once the frequency is below 300 Hz.

10. Turn off the N₂ gas cylinder immediately once the vacuum door is open.
Otherwise, N₂ gas will be consumed quickly.

11. Turn Down the hand lever and take out your sample using the gripper.
You cannot take out the sample holder without turning DOWN the hand lever as the sample holder is interlocked to the receiving station.