Thermo Electron 48C User Manual

Chapter 6 Troubleshooting
MALFUNCTION POSSIBLE CAUSE ACTION
Pressure transducer does
not hold calibration
or is noisy
Pressure transducer
defective
Replace pressure transducer
Digital electronics
defective
Replace boards one at a time
with a spare boards to isolate
the faulty board
Run output noisy
Recorder noise Replace or repair recorder
Sample CO concentration
varying
Run Model 48C on a span CO
source - if quiet, there is no
malfunction
Foreign material in
optical bench
Clean optical bench
Digital electronics
defective
Replace one board at a time
with a spare board to isolate
defective board
Analyzer does not
calibrate properly
System leak Find and repair leak
Pressure or temperature
transducer out of
calibration
Recalibrate pressure and
temperature transducer
Dirty system Clean cells and flow
components
Leaky correlation wheel Replace with a known good
wheel
Digital electronics
defective
Replace one board at a time
with a spare board to isolate
the defective board
6-2

Thermo Electron 48C Specifications

General

Brand	Thermo Electron
Model	48C
Category	Measuring Instruments
Language	English