Maintain the sample management system
July 29, 2013, 715003794 Rev. B 213
4. Use a 5/16-inch open-end wrench to remove the restrictor loop fitting
that is attached to the shorter of the two stainless steel tubes, exiting
the bottom of the injector.
5. Disconnect the injector motor cable from the interconnect on the
chassis-mounted bracket.
6. Disconnect the optical switch cable from the driver circuit board.
7. Remove the two needle-wash lines from the stainless steel connecting
lines at the bottom of the injector.
Tip: The two needle-wash lines are color-coded. The needle-wash in
tubing is green. The needle-wash out tubing is yellow or clear.
8. Loosen the two captive mounting screws that secure the injector to the
compartment floor.
9. Lift the injector assembly a few inches, and then remove it from the
instrument.
10. Carefully lay the injector on a clean surface on its side.
To remove the seal pack with needle from the injector assembly:
1. With the injector assembly removed from the separations module, use
the two 5/16-inch open-end wrenches to disconnect the injector needle
from the needle tee.
Tip: Use one 5/16-inch wrench to hold the tee, while you use the second
one to loosen the compression screw that secures the needle to the tee
(see the figure “Injector assembly components:” on page 211).
2. Loosen and remove the four M3 screws that secure the seal pack to the
base of the injector (see the figure “Align the needle port:” on page 214).
3. Remove the seal pack with needle, and place it on a clean surface.
To remove the needle from the seal pack with needle assembly:
1. With the seal pack removed from the injector, loosen the seal pack’s
upper and lower frit retainers (see the figure “Injector assembly
components:” on page 211).
2. Grasp the upper end of the needle and carefully withdraw the needle
from the seal pack.
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