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Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A
Table 10-1: Warning Messages
Warning Message Meaning Corrective Action
SOURCE WARNING The CO REF value is greater
than 5000 mV or less than
2500 mV
Check and adjust the Sync Demodulator
and optical alignment as described in
Section 10.6.6 and 10.6.5
SYNC ERROR No modulation is present on the
output of the IR detector.
Check IR source, IR detector/pre-amp,
and Opto interrupter
BENCH HEAT
SHUTDOWN
Temperature control of the
Optical bench cannot be
maintained at its 48°C set point
Check Optical Bench heater and
thermistor
SAMPLE PRESSURE
WARNING
The Sample Pressure is less
than 15"Hg or is greater than
35"Hg
Check for pressure transducer problems
as described in Section 10.6.5 and
Section 10.6.1
SAMPLE FLOW
WARNING
The sample flow is less than
500 cc/min or greater than 1200
cc/min.
Check for pneumatic system problems as
described in Section 10.6.1. Check for
flow transducer problems as described in
Section 10.6.5
BOX TEMP
WARNING
The inside chassis temp is less
than 10°C or is greater than
50°C
See Section 10.6.2
SAMPLE TEMP
WARNING
The Sample Temperature is less
than 10°C or is greater than
50°C
See Section 10.6.2
CANNOT DYN ZERO An offset of more than ±5 PPM
would be required to Zero
adjust the analyzer
See Section 10.5.5
CANNOT DYN SPAN A slope of less than 0.5 or
greater than 2.0 would be
required to Span adjust the
analyzer
See Section 10.5.6
V/F NOT INSTALLED The CPU is unable to
communicate with the V/F
Board
Check and re-seat CPU and V/F board.
See Section 10.6.3
SYSTEM RESET A power Off-On cycle has
occurred
None required
RAM INITIALIZED Dynamic memory has been re-
initialized in response to the
installation of a new PROM or
memory chip
None required
10-4