Hach ORBISPHERE GA2X00 O2 EC Manuel D'utilisation De Base page 17

13. Push the cleaning tool over the sensor head. Pour enough electrolyte (2959) into the cleaning
tool until it completely covers all the electrodes.
Note: For DG33619 regeneration cell, screw the regeneration cell on the sensor head.
14. On the sensor cleaning and regeneration center, turn the knob to the Anode position and press
the TIMER switch. A red warning light will come on and remain on for 60 seconds while cleaning
takes place.
15. At the end of the 60 second cleaning process, check for an abundant stream of bubbles that
should rise from the anode. If this does not happen, press TIMER again.
Note: The development of bubbles is a sure sign of a clean electrode.
16. On the sensor cleaning and regeneration center, turn the knob to the Guard position and press
the TIMER switch. Again, watch for the formation of bubbles and repeat the cleaning process if
necessary.
English 17