2000-OSM, F1 7-17
4. Connect a DC voltmeter from Detector Amplifier TB16 terminal 5 to chassis ground. The meter
should indicate -110 volts DC. If voltage is -110 VDC, Test Procedure 29 is complete. If the
voltage is less than -110 VDC continue with step 5.
5. Disconnect the wire to the polarizer at TB16 terminal 5 and measure the voltage as in step 4.
6. If the voltage indication is below -110 VDC at the 110 volt power supply, replace the 110 volt
power supply.
7. If the voltage is -110 VDC, remove power from the analyzer and shut down carrier and makeup
gases.
8. Remove polarizer wire from TB16 terminal 3 and connect an ohmmeter between the
disconnected wire and chassis ground. The meter should indicate an extremely high resistance
(infinity), meter maximum. A lower resistance value may indicate a short, or presence of
corrosion or water. The high value gives no assurance that the polarizer is contacting the jet.
9. If any repairs were made, the sensitivity should be checked by applying power to the analyzer
and allowing temperatures to equilibrate. Balance detector per Test Procedure 5 (TC Detector
Balance) and perform an analysis. If analysis demonstrates correct sensitivity, Test Procedure
28 is complete.
10. Remove power from the analyzer and shut down carrier and makeup gases.
11. Clean the detector cell. See “Cleaning FID/Collector” in Section 8.
12. Reconnect the wire to TB16 terminal 3 and apply power to the analyzer.
13. Measure with a DC voltmeter between the jet and chassis ground for -110 VDC. Once confirmed
remove power for reassembling.
14. Complete FID assembly.
15. Close and tighten the Controller front door and the isothermal oven door.
16. Apply carrier, makeup gas, and power.
17. Allow temperatures to equilibrate and perform an analysis to confirm correct sensitivity and
detector operation.
TP 29: “FLAME OUT” LED REMAINS ON AFTER FID FLAME IGNITION
CAUTION
It is the customer’s responsibility to ensure that the area is safe and and hazard-
free, and will remain so the entire time the analyzer is open. This responsibility
includes ensuring adequate ventilation in analyzer shelter and obtaining proper
work permits, etc.
See "AIR PURGING" in Section 4 for the override function. Do not perform
override until you have read Section 4 completely and you understand and can
perform the procedure requirements.
Do not ignite the FID flame if the isothermal oven temperature is below operational
level. Low oven temperature will result in condensation damage to the flame cell.
To Next Page
Need help?
General
