Xylem CG 842 - Manual (Page 36)

What to do if...
79
6 What to do if...
Cause Remedy
pH electrode:
– Not connected – Connect electrode
– Air bubbles in front of the
diaphragm
– Remove air bubbles
– Air in the diaphragm – Extract air or moisten
diaphragm
– Cable broken – Replace electrode
– Gel electrolyte dried out – Replace electrode
Cause Remedy
pH electrode:
– Diaphragm contaminated – Clean diaphragm
– Membrane contaminated – Clean membrane
– Moisture in the plug – Dry plug
– Electrolyte obsolete – Replenish electrolyte or
replace electrode
– Electrode obsolete – Replace electrode
– Electrode broken – Replace electrode
Measuring instrument:
– Incorrect calibration
procedure
– Select correct
procedure
– Incorrect solution
temperature (without
temperature probe)
– Set up correct
temperature
– Socket damp – Dry socket
Error message,
I /
Error message,