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083730400A DCN8130
Teledyne API – Model T400 O
3
Analyzer
115
5. Follow the procedures defined in Section 5.7.9 to confirm that the analyzer’s vital
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.
5.7.1 F
AULT
D
IAGNOSIS WITH
A
LERTS
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
FAULT CONDITION
POSSIBLE CAUSES
PHOTO TEMP WARNING
The optical bench
temperature lamp temp is
≥
51
°
C.
•
Bench lamp heater
•
Bench lamp temperature sensor
•
Relay controlling the bench heater
•
Entire Relay Board
•
I
2
C Bus
•
“Hot” Lamp
BOX TEMP WARNING
Box Temp is < 5
°
C
or > 48
°
C.
•
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
CANNOT DYN SPAN
Dynamic Span operation
failed.
•
Measured concentration value is too high or low
•
Concentration Slope value to high or too low
CANNOT DYN ZERO
Dynamic Zero operation
failed.
•
Measured concentration value is too high
•
Concentration Offset value to high
CONFIG INITIALIZED
Configuration and
Calibration data reset to
original Factory state.
•
Failed Disk on Module
•
User erased data
DATA INITIALIZED
Data Storage in DAS was
erased.
•
Failed Disk on Module
•
User cleared data.
LAMP STABIL WARN
Reference value is
unstable.
•
Faulty UV source lamp
•
Noisy UV detector
•
Faulty UV lamp power supply
REAR BOARD NOT DET
Motherboard not detected
on power up.
This warning only appears on Serial I/O COM Port(s) Front Panel Display
will be frozen, blank or will not respond.
•
Failure of Motherboard
RELAY BOARD WARN
The CPU cannot
communicate with the
Relay Board.
•
I
2
C Bus failure
•
Failed Relay Board
•
Loose connectors/wiring
SAMPLE FLOW WARN
Sample flow rate is < 500
cc/min or > 1000 cc/min.
•
Failed Sample Pump
•
Blocked Sample Inlet/Gas Line
•
Dirty Particulate Filter
•
Leak downstream of Critical Flow Orifice
•
Failed Flow Sensor
Содержание T400
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