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Teledyne API Model 100AH SO
2
Analyzer Instruction Manual, 02417, Rev. D
Table 10-2: Front Panel Warning Messages (Continued)
Message Description
VACUUM PRESSURE
WARNING
The vacuum pressure is below 1 in-Hg or above 10 in-Hg.
BOX TEMP WARNING Box temp. out of spec. Instrument fan failure, enclosure temperature
failure. Operation of the M100AH in a too warm or cold
environment will cause degradation of data quality and shorten the
life of the instrument.
RCELL TEMP
WARNING
Reaction cell temp. out of spec. The warning message is most often
present during initial warm-up or poor electrical contact.
PMT TEMP WARNING PMT temp. out of spec. The PMT temp has its own control circuit
on the preamp (02107) board. Warnings will occur during initial
warm up period. The warning can occur if the 7 pin connector to the
interior of the sensor is not plugged in. The power from the PSM
should be checked for proper voltage (+15 VDC
±
0.5) on the TEC
driver circuit mounted on the fan duct. Test point 1 and test point 4
(white) should measure 15 VDC and LED should light brightly.
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 10.1.6.
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 10.1.6.
V/F NOT INSTALLED 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
DCPS WARNING DC power supply output is put of specification. Test measurement
display is below 2300 mV or above 2700 mV. Refer Section 10.3.4.
10-10