Siemens ADVIA 2120, Operator'S Manual, Page: 53 / 477

Maintaining the Analyzer 4-7
Materials required: Beaker, household bleach, and water
Analyzer mode: Ready to Run
To clean the shear-valve and aspiration pathways in the UFC
1. At the
Utilities
menu, select the
Exerciser
tab.
2. Select the
Syringe Pumps
button on the left. If the arrow on the image of the
valve under Selector Valve does not point to Open , select on the image until
the arrow does point to Open .
3. Select
Valves
on the left.
4. Select valve V72 to close.
5. Select valves V1 , V47 , and V74 to open.
6. Hold a beaker of household bleach under the
open-tube sample probe until 5 mL is aspirated.
7. Repeat step 4 using 5 mL of water.
Closed valve
Opened valve
8. Close valve V74 and select V72 to open. Make sure that V73 is closed.
9. Repeat steps 4 and 5 .
10. Select V74 and V72 to close, and select V73 to open.
11. Repeat steps 4 and 5 .
12. Close valves V1 , V47 , and V73 . Exit the Exerciser by selecting the Analyzer
Status tab.
Cleaning the Shear Valve
Materials required:
•
Beaker
•
Household bleach
•
Paper towels
•
Squirt bottle
•
Ultrasonic bath (if available)
Time: Cleaning - 15 minutes
Checkout - 15 minutes
Analyzer mode: Standby
Clean the shear-valve faces before recalibrating the system.
High-volume laboratories or laboratories that handle dialysis samples or overly
viscous blood, such as aged samples, may need to clean the shear-valve faces
more often.
BIOHAZARD
All products or objects that come in contact with human or animal body fluids
should be handled, before and after cleaning, as if capable of transmitting
infectious diseases. Wear facial protection, gloves, and protective clothing.