Teledyne 200A Instruction Manual page 152

Teledyne API Model 200A NO
Table 9-2: Front Panel Warning Messages (Continued)
Message
PMT TEMP WARNING
MOLY TEMP WARNING
CANNOT DYN ZERO
CANNOT DYN SPAN
OZONE GEN OFF
AZERO WRN XXX.X MV
A/D NOT INSTALLED
HVPS WARNING
DCPS WARNING
Analyzer Instruction Manual, 02246, Rev. F1
X
Description
PMT temp. out of spec. The PMT temp has its own
proportional controller on the preamp (01141) board.
Warnings will occur during initial operation. The warning can
occur if the 7 pin connector to the interior of the sensor is not
plugged in. The power connector to the PSM should be
checked for proper voltage (+15 VDC ± 0.5).
Molycon temp. out of spec. The Moly temp is controlled by
the CPU. It has a thermocouple with amplifier on the 01086
Status/Temp board. Because of the high temperature of the
Moly (315° C), the moly temp warning will tend to be the last
warning to clear as the instrument is powered on.
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.
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 Generator is off. See Table 9-11for conditions.
The AutoZero 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
ZutoZero reading should be found and repaired, then wait 15
minutes for the AutoZero filter to clear itself out.
V/F (00514) 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.
High Voltage Power Supply voltage out of limits. Limits are
400-900 VDC.
DC Power Supply voltage out of limits. Limits are 2500
± 500 mV.
9-10