Procedure for starting the controller:

1. Put the crate on a flat floor, the nearest to the high-pressure cell or press.
2. Unroll entirely the electric extension available at the back and plug it to 380V. Check that the "Plugged In" light is on.
   
3. Unroll the pipe of compressed-air and plug it to the line available on the instrument. Check that the pressure is above 6 bar (required to ensure a smooth operation of the crate). If necessary, open the valve on the compressed air line.
   
4. Close the manual valves "Buffer Relief Valve", "Helium Relief Valve" and "Compressed Air Relief Valve".
5. Open the manual valve "Sample Cell".
6. Plug the capillary to the high-pressure cell or press.
7. Switch on the crate by actuating the "Power" button and wait until the controller is ready.
8. Open the bottle of helium located at the back of the crate and tune the pressure reducer to 140 bar.
9. Check that the limits of the pressure gauges (red arrows) are set to 5.5 bar (compressed air), 100 bar (helium) and 2100 bar (sample cell). It is absolutely forbidden to change that settings.
10. The pressure gauges indicate the actual pressures: about 6 bar for the compressed air line and 140 bar for the helium line.
11. Press the "Fault Acknowledgment" button twice for switching off the "Helium Fault" and "Compressor Fault" lights.
12. If there is no default, the red lights are switched off and the pressure controller is ready.
    

Procedure for using the controller:

With the arrow keys of the Eurotherm controller, enter the requested pressure. Once the "Sample Setpoint" is indicated on the display, the compressor starts. After a few minutes, if there is no leak, the pressure is regulated around the setpoint value. Here is the time expected to get to pressure:

• about 3 minutes to reach 500 bar (50 MPa)
• about 5 minutes to reach 1000 bar (100 MPa)
• about 20 minutes to precisely stabilize the pressure at 2000 bar (200 MPa)
  

For increasing or decreasing the pressure on the sample, modify the "Sample Setpoint" value with the arrow keys on the Eurotherm.

Procedure for changing the helium bottle

For exchanging the helium bottle while the controller is in operation:

1. Close the helium bottle.
2. Open fully the pressure reducer of the bottle to purge the gas.
3. Dismount the pressure reducer and extract the bottle from the platform of the crate.
4. Mount and attach the new bottle on the platform of the crate.
5. Screw the pressure reducer without too tightening it.
6. Open the bottle and tune the pressure regulator to 140 bar.
   

Procedure for stopping the controller and disconnecting the cell or press:

For releasing the pressure, enter a "Sample Setpoint" of 0.00 with the arrow keys on the Eurotherm and wait. It takes about 5 minutes when starting from 100 MPa (1000 bar).

Once the pressure at about 0:

1. Close the helium bottle.
2. Open slowly the "Buffer Relief Valve".
3. Check that the pressure decreases to zero on the "Sample Cell" mechanical gauge before disconnecting the capillary.