horiba LAQUA F-71G, Инструкция по эксплуатации

Страница: 88 / 102

Chapter 4 Maintenance and Troubleshooting
4.2 Troubleshooting
70
●
ERROR No.0007 Buffer uncertain
Definition
The standard solution cannot be identified automatically.
After performing the countermeasures below, perform
calibration again from the beginning.
●
ERROR No.0008 Please calibrate
Definition
The actual calibration interval exceeds the calibration
cycle setting.
Cause Countermeasure
There is a problem
with the standard
solution. Prepare new standard solution.
There is a problem
with the standard
solution setting. Match the regulation type (NIST, USA) of
standard solutions between the settings
and the actuals.
The responsive
membrane is dry or
dirty. Measure after cleaning the responsive
membrane and soaking it in pure water for
24 hours.
Reference internal
solution is poor or
dirty. Replace the internal solution with new
solution.
The responsive
membrane is dam-
aged or worn out. Replace the electrode.
Cause Countermeasure
It exceeds setting
days of the
calibration cycle. Perform calibration.