9-50
CELL-DYN
®
3200 System Operator’s Manual
9140181H—October 2001
Service and Maintenance
Nonscheduled Maintenance Procedures
Section 9
Closed Sample Needle Replacement
If the Closed Sample Aspiration Needle becomes bent or becomes clogged (and
cleaning does not remove the blockage), the needle should be replaced.
Materials Required
1. Gloves, lab coat, and safety glasses
2. Replacement needle
3. Phillips-head screwdriver (#2)
4. Small needle-nose pliers or similar tool
Procedure
WARNING: Potential Biohazard.
The sample needle is sharp and
potentially contaminated with infectious material. Avoid contact with tip of
needle.
1. In the
MAIN MENU
, press
[SPECIAL PROTOCOLS]
IROORZHGE\
>
DIS/ENAB
ANALYZER]
and
[DISABLE ANALYZER]
.
2. Pull the Tower cover up and off the instrument (Tower Door on the CS model
must be open).
3. Locate the Aspiration Needle.
NOTE:
The Aspiration Needle consists of two separate needles joined
together, one for venting and one for aspiration. (Refer to Figure
9.20.) The vent needle is the shorter of the two and faces the
instrument. Note that the tubing attached to the opening at the top
of the vent needle leads to a vent chamber on the left side of the
Tower Module, while the tubing attached to the opening at the top
of the aspiration needle leads to Y valve located between the Shear
Valve and the Open Sample Probe.