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CELL-DYN
®
3200 System Operator’s Manual
9-51
9140181H—October 2001
Section 9
Service and Maintenance
Figure 9.20 Closed Sample Needle
4. Hold the needle firmly with one hand and with the other hand use the pliers
to carefully work the tubing up and off the top of both ends of the needle.
5. Loosen the Thumb Screw at the top of the Needle Mounting Assembly and
remove the clip holding the needle to the assembly.
6. Carefully pull the top of the needle forward until the flange clears the slot in
the bracket. Lift the needle up and out of the Wash Block.
7. Place the new needle into the Wash Block, making sure the shorter part
(venting needle) faces the instrument, and place the flange into its slot in the
top bracket.
8. Reinstall the clip over the top of the needle and tighten the Thumb Screw.
9. Attach the vent tubing to the vent section of the needle and the aspiration
tubing to the aspiration section.
NOTE:
It is important that the tubing be attached correctly.
NOTE:
Wetting the top portion of the needle will allow the tubing to slide
more easily.
1 Holding Clip
2 Aspiration Tubing
3 Vent Tubing
4 Needle Top
5 Vent Needle (shorter)
6 Aspiration Needle
(longer)
7 Wash Block
8 Needle Mounting
Assembly
9 Thumb Screw (with
spring)
2
1
3
9
8
6
7
5
4