Teledyne 3000ZA-3X - Trace oxygen analyzer - Manual (Page 62)

Maintenance 3000ZA-3X
Teledyne Analytical Instruments 50
 Sample system
 Power Supply
 Microprocessor
 Displays
 5 digit LED meter
 2 line, 20 character, alphanumeric, VFD display
 RS-232 Communications Port
See the drawings in the Drawings section in back of this manual for
details.
5.6 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.
5.7 Troubleshooting
Table 5-2: Troubleshooting
Problem Possible Cause Solution
Erratic readings of the
oxygen concentration
as reported by the
analyzer Analyzer may have
been calibrated in an
inaccurate fashion. Recalibrate analyzer,
making sure the
proper gas is fed, the
proper sensor is
selected, and the
proper value of span
gas is input.