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Teledyne API Model 200AU NO
X
Analyzer Instruction Manual, 02293, Rev. F
9-10
Table 9-2: Front Panel Warning Messages (Continued)
Message Description
CANNOT DYN ZERO Dynamic zero cal. out of spec. The reading of the PMT was
too high for the ZERO button to appear. Make sure the
instrument is receiving zero gas. Check for dirty reaction cell.
Do the factory calibration procedure located in Section 9.1.6.
CANNOT DYN SPAN Dynamic span cal. out of spec. The reading of the PMT was
too high or low for the SPAN button to appear. Make sure the
instrument is receiving correct concentration span gas. Make
sure the expected span concentration is entered. Check for
dirty reaction cell. Do the factory calibration procedure located
in Section 9.1.6.
OZONE GEN OFF Ozone generator is off. See Table 9-11 for conditions.
PRACT WRN XXX.X MV The Pre-reactor circuit compensates for detector dark current,
and background light. Certain electrical faults cause high
readings to be added to the filter. First, the cause of the high
PREREACT reading should be found and repaired, then wait
10 minutes for the Pre-reactor filter to clear itself out.
A/D NOT INSTALLED V/F board has failed. The V/F board did not respond to
commands from the CPU. This probably means 1. board not
seated in socket 2. defective board 3. defective back plane
connector
HVPS WARNING High Voltage Power Supply voltage out of limits. Limits are
400-900 VDC
DCPS WARNING DC Power Supply voltage out of limits. Limits are 2500
± 500 mV