Table of Contents
Advertisement
5 Maintenance
5.5
Cleaning
If instrument is unmounted at time of cleaning, disconnect the instrument from the
power source. Close and latch the front-panel access door. Clean outside surfaces with a
soft cloth dampened slightly with plain clean water. Do not use any harsh solvents such
as paint thinner or benzene.
For panel-mounted instruments, clean the front panel as prescribed in the above
paragraph. DO NOT wipe front panel while the instrument is controlling your process.
5.6
Troubleshooting
Problem:
Erratic readings of the Oxygen concentration as reported by the analyzer.
Possible Cause:
The gas flow is too high.
Solution:
Reduce the gas pressure to the analyzer.
Possible Cause:
The analyzer may have been calibrated in an inaccurate fashion.
Solution:
Turn the analyzer off, then back on again. Press the System key when prompted by the
analyzer "Press System for default Values". This will return the analyzer to its default
settings in calibration and zero values. If erratic behavior continues replace the sensor.
Possible Cause:
Atmospheric Oxygen may be diffusing in through the vent and affecting the oxygen
level which the sensor sees.
Solution:
Increase flow rate and/or length or vent tubing in order to dilute of minimize the diffusion
of oxygen from the vent back to the sensor.
Problem:
Inaccurate zero operation (i.e. the user has zeroed the analyzer accidentally on gas much
higher than one would normally use for a zero gas).
Solution:
Turn the analyzer off, then back on again. Press the System key when prompted by the
analyzer "Press System for default Values". This will return the analyzer to its default
settings in calibration and zero values. Now proceed to carefully calibrate and zero the
analyzer.
5-4
Teledyne Analytical Instruments
Model 3000MA
Advertisement
Table of Contents
