Table 6-1. Troubleshooting - General Guide - Thermo Scientific 410i Instruction Manual

Troubleshooting
Troubleshooting Guides
6-2 Model 410i Instruction Manual
Table 6–2 lists all the alarm messages you may see on the graphics display
and provides recommendations about how to resolve the alarm condition.
Table 6–1. Troubleshooting - General Guide
Malfunction
Does not start (the light on
display does not come on
and the pump motor is not
running)
Pressure transducer does not
hold calibration or is noisy
Run output noisy
Analyzer does not calibrate
properly
Analog test ramp
Possible Cause
No power or wrong power
configuration
Main fuse is blown or
missing
Bad switch or wiring
connection
Pressure transducer
defective
Recorder noise
Sample CO concentration
2
varying
Foreign material in optical
bench
System leak
Pressure or temperature
transducer out of calibration
Dirty system
Leaky correlation wheel
Faulty recorder
D/A calibration off
Action
Check the line to confirm
that power is available and
that it matches the voltage
and frequency configuration
of the instrument.
Unplug the power cord, open
the fuse drawer on the back
panel, and check the fuses
visually or with a multimeter.
Unplug the power cord,
disconnect the switch and
check operation with a
multimeter.
Replace pressure transducer.
Replace or repair recorder.
Run instrument on a span
CO source - if quiet, there is
2
no malfunction.
Clean optical bench.
Find and repair leak.
Recalibrate pressure and
temperature transducer.
Clean cells and flow
components.
Replace with a known good
wheel.
Replace recorder.
Re-calibrate the D/A with a
DMV known to be in
calibration.
Thermo Fisher Scientific