Section 7 Troubleshooting - Hach SIGMATAX 2 User Manual

Section 7
Error message
delivery error
filling error
Sensor error
Troubleshooting
As soon as a fault leads to an interruption in operation, SIGMATAX 2 immediately
switches to service mode. Corresponding error messages are shown both on the
SIGMATAX 2 display and on the displays of the connected process photometers.
Service mode means that:
The instrument is no longer in operational mode
•
The sampling probe and sample storage vessel are empty
•
The system is depressurized
•
The sampling probe is closed
•
The fault indication contact is held in the last valid position
•
The instrument will not return automatically to operational mode
•
Possible cause
Sample line clogged
Probe valve clogged
Internal electrical cause
Measures
Select [clean.samp. tube]and carry out a full clean; if
necessary, blow air through the sample line using the
compressor. Inspect the upper level indication sensor.
Check the compressor in the [+FUNCTIONTEST]
menu
Remove probe, extract blockages and inspect the
probe valve and drain valve.
Call customer service.
37