334 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Caldos25, Caldos27, Magnos206, Magnos28, Magnos27:
Troubleshooting
Temperature problem
Connecting leads of the temperature sensor or the heater discon-
nected
• Check the connecting leads and connectors.
• Check the line seating in the insulated jackets.
Defective thermal link
• Check thermal link for continuity and replace if necessary.
Leaking thermostat or open purge gas connections
• Check the seal integrity between the thermostat chamber and the
mounting flange; tighten mounting bolts or replace O-rings as needed.
• Seal the analyzer purge gas inlet and outlet with sealing connectors.
• Check the purge gas and reduce as needed: in operation max. 20 l/h,
positive pressure p
e
= 2 to 4 hPa.
Unstable readings
Gas path leakage
• Check the seal integrity (see page 268) of the analyzer module gas paths
and (if applicable) of the lines to the pneumatics module.
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