Fault Diagnosis With Alerts; Table 5-3. Alerts - Indicated Failures - Teledyne T400 User Manual

5. Follow the procedures defined in Section 5.7.9 to confirm that the analyzer's vital
5.7.1 F D
AULT
The most common and/or serious instrument failures will result in a warning message,
called an Alert. Table 5-3 lists some of the more common Alert messages, along with
their meaning and recommended corrective action.
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 analyzer sub-system (power supply, relay
board, motherboard) has failed, rather than being an indication of the specific failures
referenced by the warning Alerts.

Table 5-3. Alerts - Indicated Failures

ALERT
PHOTO TEMP WARNING
BOX TEMP WARNING
CANNOT DYN SPAN
CANNOT DYN ZERO
CONFIG INITIALIZED
DATA INITIALIZED
LAMP STABIL WARN
REAR BOARD NOT DET
RELAY BOARD WARN
SAMPLE FLOW WARN
083730400A DCN8130
functions are working (power supplies, CPU, relay PCA, touchscreen, PMT cooler,
etc.).
As needed, refer to Figure 2-3 for the general layout of components and
•
sub-assemblies in the analyzer.
As needed, refer to the wiring interconnect diagram in Appendix B.
•
A
IAGNOSIS WITH LERTS
FAULT CONDITION
The optical bench
temperature lamp temp is
≥ 51°C.
Box Temp is < 5°C
or > 48°C.
Dynamic Span operation
failed.
Dynamic Zero operation
failed.
Configuration and
Calibration data reset to
original Factory state.
Data Storage in DAS was
erased.
Reference value is
unstable.
Motherboard not detected
This warning only appears on Serial I/O COM Port(s) Front Panel Display
on power up.
will be frozen, blank or will not respond.
The CPU cannot
communicate with the
Relay Board.
Sample flow rate is < 500
cc/min or > 1000 cc/min.
Teledyne API – Model T400 O
POSSIBLE CAUSES
• Bench lamp heater
• Bench lamp temperature sensor
• Relay controlling the bench heater
• Entire Relay Board
• I 2 C Bus
• "Hot" Lamp
• 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
• Failed Disk on Module
• User cleared data.
• Faulty UV source lamp
• Noisy UV detector
• Faulty UV lamp power supply
• Failure of Motherboard
• I C Bus failure
2
• Failed Relay Board
• Loose connectors/wiring
• Failed Sample Pump
• Blocked Sample Inlet/Gas Line
• Dirty Particulate Filter
• Leak downstream of Critical Flow Orifice
• Failed Flow Sensor
Analyzer
3
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