Siemens ADVIA 2120, Operator'S Manual, Page: 52 / 477

4-6 Maintaining the Analyzer
1. Tilt the front cover down.
2. Remove the sample line ( 1 ) from the bottom of the needle base.
CAUTION
You must remove the sample line before the aspirator assembly is tilted
forward. If the line stays in place, it can break as the assembly is tilted.
3. Loosen the thumb screws (
2
) and tilt the autosampler aspirator assembly
forward.
4. Pull up the spring-loaded knob (
3
), turn it a ¼ turn, then remove the
centering collar (
4
) by pulling it up and out.
NOTE
If the centering collar is locked into place, squirt a little warm DI water over
the collar to loosen it.
5. Place the red needle cover over the needle.
6. Remove the three tubes from the collar.
To remove the centering collar from the manual closed-tube sampler
1. Tilt the front cover down.
2. Pull the centering collar up.
3. Remove the tubing from the nipple.
4. Place the red needle cover over the
needle.
Cleaning the Shear Valve and Aspiration Pathways in the UFC
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