17
TROUBLESHOOTING
PROBLEM CAUSES SOLUTIONS
Sensor cannot be calibrated
and measured value
greater than DPD measurement
Run-in period too short Observe the run-in period
Troublesome substances in
the water
Check water for troublesome
substances and contact supplier
Short circuit in the measuring
line
Identify short circuit and
eliminate the cause.
Contact supplier
Electrode is dirty Clean or replace electrode
Sensor measured value is
unstable
Dirty / damaged electrode Clean or replace electrode
Unstable pressure Check installation
Nessun segnale di lettura Insufficient flow into the cell Check correct position of the float.
If necessary, open water flow into
the cell
Desoldering wires in the electrode cable Contact supplier
Black and red wires reversed Check for proper connection of the
wires on the instrument terminal
Before return the amperometric cell to the manufacturer Repair service, follow
⎘ Decommisioning procedure.
If there is the possibility that residual corrosive liquid into pump head could cause
damages, declare it on REPAIR FORM.
Complete the PRODUCT SERVICE REPAIR FORM and send it with the amperometric cell.
Repair service is not accepted if PRODUCT SERVICE REPAIR FORM is missing.
Repair service
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