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Model 300E Carbon Monoxide Analyzer
Instruction Manual
TROUBLESHOOTING & REPAIR PROCEDURES
P/N 04288 REV: A
189
To View or Clear the various warning messages press:
SAMPLE
WHEEL TEMP WARNING
CO = XX.XX
TEST
CAL
MSG
CLR
SETUP
Make
SURE
warning
messages are
NOT
due to
LEGITIMATE PROBLEMS.
.
Press
CLR
to clear the
message currently being
Displayed.
If more than one warning is
active the next message will
take its place
Once the last warning has been
cleared, the analyzer returns to
SAMPLE
Mode
SAMPLE
RANGE=50.0 PPM
CO = XX.XX
< TST TST > CAL
MSG
CLR
SETUP
SAMPLE
WHEEL TEMP WARNING
CO = XX.XX
< TST TST > CAL
MSG
CLR
SETUP
TEST
deactivates Warning
Messages until New warning(s)
are activated
MSG
activates Warning
Messages.
<TST TST
> keys replaced with
TEST
key
Figure 11-1: Viewing and Clearing Warning Messages
NOTE: A failure of the analyzer’s CPU or Mother Board can result in any or ALL of
the following messages.
Table 11-1 Warning Messages
Warning
Message
Fault Condition
Possible Causes
BENCH TEMP
WARNING
The optical bench temp
is controlled at 48
±
5
°
C.
§
Bench Heater
§
Bench Temperature Sensor
§
Relay controlling the Bench Heater
§
Entire Relay Board
§
I
2
C Bus
BOX TEMP
WARNING
Box Temp is < 5
°
C or
> 48
°
C.
Box Temperature typically runs ~7
o
C warmer than ambient
temperature.
§
Poor/blocked ventilation to the analyzer.
§
Stopped Exhaust-Fan
§
Ambient Temperature outside of specified range
CANNOT DYN
SPAN
Dynamic Span
operation failed
§
Measured concentration value is too high or low.
§
Concentration Slope value to high or too low
CANNOT DYN
ZERO
Dynamic Zero
operation failed
§
Measured concentration value is too high.
§
Concentration Offset value to high
CONFIG
INITIALIZED
Configuration and
Calibration data reset
to original Factory
state.
§
Failed Disk on Chip
§
User erased data
DATA
INITIALIZED
Data Storage in iDAS
was erased
§
Failed Disk on Chip
§
User cleared data