Siemens ADVIA 2120, Operator'S Manual, Page: 48 / 477

4-2 Maintaining the Analyzer
Schedule
To maintain the operating efficiency of your analyzer, you must perform specific
procedures according to the frequency listed below.
After 1000 samples or daily
•
Perform a system wash.
Perform the system wash procedure at the end of each shift or work period (a
maximum of eight hours). After the laboratory shift with the largest number
of samples, run three system wash cycles; after other shifts, you need to run
only one wash cycle. In addition, if the number of samples in a shift exceeds
400, perform one system wash after the 400th sample.
After 2000 samples or weekly, and before recalibration
•
Perform an RBC/baso/retic flowcell wash.
•
Clean shear-valve and aspiration pathways in the UFC.
•
Inspect the centering collars. Clean if necessary.
•
Turn off the system.
•
Clean the shear valve.
After 16,000 samples or every two months
•
Inspect the syringes and plungers, PN 067-B506-01 and PN 067-B506-02.
Clean if necessary.
•
Replace the 50-
μ
L syringe plungers, PN 067-B506-01.
•
Inspect the Perox-cap vent hole for buildup. Clean if necessary.
Every 6 months
•
Replace the 1000-
μ
L syringe plungers, PN 067-B506-02.
•
Clean the air-circulation filter.
•
Replace the autosampler needle and/or the manual sampler needle.
IMPORTANT
In addition to these scheduled procedures, periodic inspections of the UFC
pathways, vacuum shuttle, and reaction chambers are essential. If you find
buildup or dirt in any of the lines or chambers, clean the line or chamber in
question.