Fault Diagnosis With Alerts; Table 5-3. Warning Alerts, Fault Conditions And Possible Causes - Teledyne T200 User Manual

4. Suspect a leak first!
•
•
5. Follow the procedures defined in Section 2.3.4.3 to confirm that the analyzer's
vital functions are working (power supplies, CPU, relay PCA, touchscreen, PMT
cooler, etc.).
F
AULT
Table 5-3 lists brief descriptions of warning Alerts that may occur during start up and
describes their possible causes for diagnosis and troubleshooting..
It should be noted that if more than two or three warning Alerts occur at the same time, it
is often an indication that some fundamental sub-system (power supply, relay PCA,
motherboard) has failed rather than an indication of the specific failures referenced by the
warnings.

Table 5-3. Warning Alerts, Fault Conditions and Possible Causes

WARNING
AUTO ZERO WARN
XXX.X MV
BOX TEMP WARNING
CANNOT DYN SPAN
CANNOT DYN ZERO
CONFIG INITIALIZED
083730200A DCN7962
Customer service data indicate that the majority of all problems are
eventually traced to leaks in the internal pneumatics of the analyzer or the
diluent gas and source gases delivery systems.
Check for gas flow problems such as clogged or blocked internal/external
gas lines, damaged seals, punctured gas lines, damaged / malfunctioning
pumps, etc.
D A
IAGNOSIS WITH LERTS
FAULT CONDITION
AutoZero reading too high.
(Auto-zero reading above 200
mV).
Value shown in message
indicates auto-zero reading at
time warning was displayed.
Temperature of chassis is
outside specified limits.
(typically < 7°C or > 48°C)
Dynamic Span operation failed.
2 (Contact closure span calibration
failed while DYN_SPAN was set
to ON).
Dynamic Zero operation failed.
(Contact closure zero calibration
3
failed while DYN_ZERO was set
to ON).
Configuration and Calibration
data reset to original Factory
state or erased.
Teledyne API T200 NO/NO
POSSIBLE CAUSES
AUTO ZERO valve not working
Valve control driver failed
Bad Relay PCA
Failed +12 VDC power supply
Gas leak across AUTO ZERO Valve ports
Dirty Reaction Cell
O flow problem to RCELL
3
Box Temperature typically runs ~7°C warmer
than ambient temperature
Poor/blocked ventilation to the analyzer
Stopped Exhaust-Fan
Ambient Temperature outside of specified
range
Measured concentration value is too high or
low
Concentration Slope value to high or too low
Measured concentration value is too high
Concentration Offset value to high
Failed Disk on Module
User erased data
/NO Analyzer with NumaView™ Software
2 x
133