Hach-Lange ORBISPHERE A1100 Family - Manual (Page 36)

34
Maintenance and Troubleshooting
20. Remove the plastic base from the bottom of
the sensor and connect the sensor to the
sensor cleaning and regeneration center
(32301).
21. Push the cleaning tool over the sensor head.
22. Pour enough electrolyte (2959) into the
cleaning tool until it completely covers all the
electrodes.
23. 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.
24. At the end of the 60 second cleaning
process, check for an abundant stream of
bubbles 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.
25. 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.