HP 5890 SERIES II Service Manual page 38

9. Disconnect the Carrier Gas Inlet which termi-
nates either at the Forward Pressure Regulator
(for Manual Pressure Control) or the PCOC Pro-
portional Control Valve (for Electronic Pressure
Control).
10. Disconnect the Septum Purge Outlet which ter-
minates at the PCOC Purge Regulator,
mounted inside the flow module.
11. Cap the base of the inlet, inside the column
oven.
12. Remove the auto- injection assembly (or op-
tional manual injection assembly) by rotating it
counter- clockwise). Be careful not to loose
the septum, insert, or PCOC insert spring which
are installed under the injection assembly.
HEATER/SENSOR
CABLE ASSEMBLY
13. Remove the air deflector using a Pozidriv screwdriver to remove the screw securing the air de-
flector to the inlet weldment.
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AUTO
INJECTION
ASSEMBLY
SEPTUM
INSERT
PCOC INSERT
SPRING
AIR DEFLECTOR
SCREW
SVC 2- 17
OPTIONAL
MANUAL
INJECTION
ASSEMBLY
DUCKBILL
SEPTUM
WELDMENT
INSULATION
CAVITY
SLEEVE