Maintaining the System Page 3-31
Clearing Blockages
BIOHAZARD: See Appendix A, Protecting Yourself from Biohazards.
Always wear protective gloves when carrying out this procedure, and
avoid spray contamination when clearing blockages with water.
Equipment: Clot removal line (Cat. 478645); 1 mL syringe, as required.
CAUTION: Only use Siemens clot removal line as other materials may
damage the 248.
1. Stop the 248 system, Page 3-8.
Clearing a Blockage in the Probe
2. Remove the probe and housing, Page 3-24 steps 2 to 6.
3. Carefully thread the clot removal line up the probe until it appears
through the probe connector, then pull the line through.
Figure 3-42. Clearing a Blockage in the Probe
Clearing a Blockage in the Pre-heater
4. Remove the pre-heater tube assembly, Page 3-29 steps 3 to 9.
5. Pass the clot removal line through the pre-heater tube then pull the
line through the reagent inlet connector.
Figure 3-43. Clearing a Blockage in the Pre-Heater
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