Flame Ionization Detector (Fid); Remove/Replace Fid Ignitor - HP 5890 SERIES II Service Manual

FLAME IONIZATION DETECTOR (FID)

Remove/Replace FID Ignitor

HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE
`
POWER CORD IS CONNECTED. AVOID A POTENTIALLY DANGEROUS SHOCK
HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE
INSTRUMENT.
FLAME IONIZATION
`
DETECTORS USE HYDROGEN GAS AS FUEL. BE SURE ALL HYDROGEN GAS IS
TURNED OFF AT ITS SOURCE BEFORE REPLACING ANY FLOW COMPONENTS.
1. Set the main power line switch to the off position.
2. Disconnect the power cable from its receptacle.
3. Turn off all gas supplies.
4. Lift the hinged top cover at its front edge,
exposing the detector area.
5. Disconnect the ignitor wire lead connector at
the mating connection adjacent to the ignitor.
COLLECTOR
NUT
COLLECTOR
SPANNER NUT
COLLECTOR
MOUNT
THERMAL
STRAP
6. Use a wrench to remove the ignitor from the FID ignitor castle.
7. Ensuring that the washer is in place, (between the ignitor castle and the threads of the ignitor)
install the new ignitor; tightening it to a snug fit.
8. Connect the ignitor wire lead connector to the mating connection on the ignitor wire (which
runs to the FID flow manifold).
9. Restore all gas supplies.
10. Restore power to the HP 5890 Series II.
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(FID) AND NITROGEN
DETECTOR PCB
INTERCONNECT
IGNITOR
CLAMPS
SVC 4- 11
PHOSPHOROUS (NPD)
RED O VISIBLE
OFF ON