Svc - HP 5890 SERIES II Service Manual

11. Use a Pozidriv screwdriver to remove the two screws securing the inlet to the instrument.
12. Gently pull the inlet up and out of its instrument cavity.
13. Remove the retaining nut loosened in step 10.
14. Slide the heated block off of the shell weldment.
Handle the heater and sensor cartridges with care to prevent breakage.
cartridges (particularly the smaller sensor cartridge) are fragile.
15. Carefully slide the heater and sensor cartridges
out of the heated block portion of the inlet.
16. Slide the heater and sensor cartridges into the
heated block of the inlet being installed.
17. Install the heated block onto the stem of the
shell weldment.
18. Install the retaining nut on the base of the shell
weldment securing the heated block to the
shell weldment.
19. Install any removed insulation around the
heated block (within the cavity provided in the
shell weldment).
20. Carefully install the inlet, securing it to the in-
strument with two Pozidriv screws.
To lessen the possibility of pressure leaks, always install a new anealed seal, when
the old seal has been removed.
21. Tighten the retaining nut at the base of the shell weldment.
22. Install the reducing nut, flat washer, and anealed seal onto the base of the retaining nut.
23. Install the lower insulation cover and three pieces of lower insulation, inside the column oven.
24. Tighten the two screws which secure the lower insulation cover inside the column oven.
25. Replace any insulation that was removed from
around the inlet.
26. Install the insert assembly on the shell weldment and secure using a ???- inch wrench.
27. Install the tubing nut (and associated split vent tube) on the shell weldment and secure using a
1/2- inch wrench.
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HEATER/SENSOR
CABLE ASSEMBLY
HEATED
BLOCK
RETAINING
NUT
NOTE

SVC 6- 14

The
LINER
SHELL
WELDMENT