Shut Down Procedure

1.  Put the system to the OFF mode from the QT HMI
   
2. Turn off all the compressors manually (location of the switch of one of the compressors is shown below).
   
3. Disconnect the power to HR3 HMI and the HR3 compressor from the outlet. The two power cables are located back side of the HR3 compressor (please see the image below: when the connectors are unplugged).
   
4. Open the QT HMI cupboard and turn off the main power breaker (see the image below). Then the entire system will be on OFF state.
   
5. Then shut down the QT computer/terminal in the control room.
   

Restart(Turning ON) Procedure

1. Turn ON all the cold head compressors manually (there are 10 of them: two rows: A & B)
   
2. Plug the two power cables for HR3 back to the power outlet which is located nearby (back of the HR3 compressor rack).
   
3. Open the QT HMI cupboard and turn ON the main breakers.
   
4. You will see the system startup on the HMI screen.
   Then, open the cupboard again and check the PLC computer screen (the small one located top left corner of the cupboard).
   If it shows this "STOP" sign (left image below), then navigate to the "settings" (using the arrow buttons below the screen), and go to the "RUN/STOP", press OK for RUN.
   
   
   Then the system will be restored.
   Check the LCW supply to the system before starting Liquefying or in IDLE mode to run the cold head compressors.
   Check the QT System Starting Procedure for the steps to Start the system back to liquefy mode
   
   
5.  In the control room, turn ON the QT computer/terminal (see the image below). PW=LN
   
6. On that computer, start the "SmarClient" and then proceed to the next screens (with entering the admin password) as shown in the following screens.