HP 5890 SERIES II Service Manual page 22

INLET COMPONENTS
REPLACING INLET COMPONENTS
There are five inlet options available for the HP 5890 Series II Gas Chromatograph; packed column,
packed column with septum purge, split/splitless capillary, split- only capillary, and Programmable Cool
On- Column capillary (PCOC). Maintenance procedures for all the inlets are given in the following
pages. Procedures are supplied to remove, replace, and/or clean various subassemblies, based on the
current maintenance philosophy, i. e., to allow replacement of the lowest level components applicable
for a particular inlet.
Specific part numbers are not given in this section. For all replacement part numbers, refer to Section 5
of the IPB portion of this document (Inlet Components).
All of the inlets are heated using a heater/sensor setup which consists of at least one heater cartridge
and one sensor cartridge. Heating of the inlet zones is not covered in this section. For information on
the zone heater/sensor systems, refer to Section 6 of the service portion of this document (Zone Tem-
perature).
This document is not meant to provide instruction for first time installation of the inlet options discussed.
Add- on sheets exist for just this purpose, and should be referenced when performing a first time instal-
lation.
REPLACING INLET COMPONENTS
PACKED COLUMN INLET
Remove/Replace Packed Column Inlet
SEPTUM- PURGED PACKED COLUMN INLET
Remove/Replace Septum- Purged Packed Column Inlet
SPLIT- ONLY CAPILLARY INLET
Remove/Replace Split- Only Capillary Inlet
SPLIT/SPLITLESS CAPILLARY INLET
Remove/Replace Split/Splitless Capillary Inlet
PROGRAMMABLE COOL ON COLUMN INLET (PCOC)
Remove/Replace PCOC Inlet
INJECTION PORT COOLING FAN
Remove/Replace Cooling Fan
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TABLE OF CONTENTS
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SVC 2- 1
Section 2
SVC 2- 1
SVC 2- 2
SVC 2- 2
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SVC 2- 8
SVC 2- 8
SVC 2- 12
SVC 2- 12
. SVC 2- 16
SVC 2- 16
SVC 2- 20
SVC 2- 20