Table 5-6. Relay Board Watchdog And Status Led Failure Indications - Teledyne T400 User Manual

Table 5-6. Relay Board Watchdog and Status LED Failure Indications

LED FUNCTION
Metal Wool
D2 1
Scrubber
Yellow
Heater 1
D7 Zero/Span Gas
Green Valve 2
D8 Measure/Ref
Green Valve
D9 Sample/Cal
Green Gas Valve 3
D15 Photometer UV
Green Lamp Heater
IZS O
3
D16 2
Generator UV
Green
Lamp Heater
1 Only applies on analyzers with metal wool scrubber option installed.
Only applies to instruments with calibration valve options installed.
2
3 Only applies on analyzers with IZS options installed.
120
SIGNAL I/O PARAMETER
ACTIVATED BY
O3_SCRUB_HEATER
SPAN_VALVE
PHOTO_REF_VALVE
CAL_VALVE
PHOTO_LAMP_HEATER
O3_GEN_HEATER
Teledyne API – Model T400 O
DIAGNOSTIC TECHNIQUE
VIEW RESULT
Voltage displayed should change.
If not:
• Failed Heater
O3 SCRUB
• Faulty Temperature Sensor
• Failed AC Relay
• Faulty connectors/wiring
Valve should audibly change states.
N/A
If not:
• Failed Valve
N/A • Failed Relay Drive IC on Relay PCA
• Failed Relay PCA
• Faulty +12 VDC Supply (PS2)
N/A
• Faulty connectors/wiring
Voltage displayed should change.
PHOTO_LAMP
If not:
• Failed Heater
• Faulty Temperature Sensor
O3 GEN TEMP
• Failed AC Relay
• Faulty connectors/wiring
Analyzer
3
083730400A DCN8130