14
DANGER
AUTHORIZED AND QUALIFIED PERSONNEL
Installation
and maintenance tasks should be carried out by AUTHORIZED AND QUALIFIED
PERSONNEL only in accordance with local regulations.
DANGER
POWER SUPPLY DISCONNECTION
Always disconnect power to the equipment before you perform any installation or maintenance
tasks. Failure to disconnect power will result in serious physical injury.
1. Follow precautions described in paragraph
⎘ “Precautions”.
2. Close water inlet valve.
3. Disconnect electrode’s wirings on the instruments terminal (refer to the manual of the
instrument).
4. Unscrew the screw at the top right that secures the amperometric cell to the wall / panel.
5. Pivoting on bottom left screw, gently rotate the cell to the left approximately 30 degrees so
as not to fall outside the cleaning balls.
6. Unscrew the electrode and replace it with a new one or clean as specified in paragraph
⎘ “Electrode cleaning”.
7. Screw electrode in its seat.
8. Tighten right screw onto the amperometric cell in order to secure it on the wall / panel.
9. Reconnect wires on the instrument terminal (refer to the manual of the instrument).
10. Proceed to the calibration of amperometric cell.
Electrode cleaning
To clean electrode, follow from step 1 to 6 of paragraph
⎘ “Electrode replacing”, then
1. Unscrew electrode.
2. Clean the copper with a cotton ball soaked in acid solution, gently rub with a fine-grain
abrasive paper and rinse with water.
3. Screw electrode in its seat.
4. Reconnect wires on the instrument terminal (refer to the manual of the instrument).
5. Proceed to the calibration of amperometric cell.
Electrode replacing
DANGER
Do not USE alcohol to clean the amperometric cell.
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