Hach-Lange ORBISPHERE A1100 Family - Manual (Page 34)

32
Maintenance and Troubleshooting
10. Clean by rotating the cleaning tool over the
sensor head for a few seconds, in a
clockwise direction only
.
11. Remove the tool and tap it face down on a
flat work surface to remove any powdery
deposit.
12. Check the sensor to ensure that all deposits
have been removed from the anode. If not,
repeat steps
10. and 11. until the anode
regains its bright silver appearance.
13. Rinse the sensor head under a tap for 15
seconds, aiming the jet of water directly onto
the sensor head.
14. Do not dry the center electrode area, as the
gap between cathode and guard should be
left filled with water.
15. Spread a little of the polishing powder
(29331) onto the clean polishing cloth (2934),
and add a few drops of water to form a grey,
milky liquid.