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4 CALIBRATION
Span calibration <color>
Removing the residual-chlorine sensor
1. Stop the device (close the stop valve, discharge water and turn OFF the power).
Reference
" Stopping operation" (page 137).
2. Remove the residual-chlorine sensor.
Reference
" Removing the residual-chlorine sensor" (page 142).
3. Attach the rubber plug to the residual chlorine/conductivity cell.
4. Close the inner door of the device and turn ON the power.
Calibration operation
1. Place the calibration tank with span calibration solution beside the device.
2. Connect the tank to the calibration inlet of the device.
Calibration
solution tank
3. Confirm that "WARM UP!" is not displayed.
If displayed, wait until it disappears.
34
Connect
Stop valve
must be closed.
"WARM UP!"
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