Cleaning; Troubleshooting - Teledyne 3000MB Operating Instructions Manual

Percent OxygenAnalyzer
The 3000MB contains the following major components:
Paramagnetic Sensor
2 x Power Supplies
Microprocessor
Displays

5.4 Cleaning

If the instrument is unmounted at the time of cleaning, disconnect
the instrument form its power source. Close and latch the front
panel, and front door. Clean outside surfaces with a soft cloth
dampened slightly with plain clean water. Do not use harsh
solvents such as paint thinner or benzene.
For mounted instruments, clean the front panel as described in the
above paragraph. DO NOT wipe front panel while the
instrument is controlling your process.
5.5
Problem:
Erratic reading of the oxygen concentration by 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 your analyzer to it's 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:
5 Digit, LED Meter.
2 line, 20 character, alphanumeric, VFD display.

Troubleshooting

Teledyne Analytical Instruments
Maintenance 5
5-3