Stop the program if it is running!
1. To calibrate you need to press your finger on the logo image on the left corner of the touchscreen. Keep pressing for 10 seconds till opens an adjustment page with an orange background.
2. Press VACUUM CALIBRATION button in the middle at the bottom.
3. Now you have the SETTING page for vacuum. Press VAKUM ON and wait 5 minutes until vacuum rises around 600-800 mmHg
4. After the vacuum has worked for a while, enter 980 below and press VAKUM SET. The vacuum is now calibrated. Press the X symbol on the top right corner to come back to the home page.