Siemens ADVIA 2120, Operator'S Manual, Page: 94 / 477

Troubleshooting the Analyzer 5-27
If DP1 is replaced, run two saline primers. At the
Operations
menu, select
the Startup tab. Select Refresh and verify that the WBC background count is
0.1 or less (1000 cells/µL).
If DP4 is replaced, do a system wash and verify that the reaction chambers
are filling up with wash solution to their normal wash levels.
If DP5 is replaced, run two saline primers. At the Operations menu, select
the St a rtup tab. Select Refresh and verify that the platelet background count
is 5 or less (1000 cells/µL).
If required, run additional saline samples until acceptable background counts
are obtained for two consecutive samples. If more than five saline samples
are required, verify that the pump was installed properly.
7. Run controls to verify analyzer performance.
Replacing the Drain Filters
If the filter is not clogged but you want to clean it because of heavy buildup or
discoloration, use the backflush procedure.
Time: 10 minutes
Analyzer mode: Off
WARNING
The analyzer must be off; otherwise, personal injury from the needle may occur.
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.
The operator should follow the recommendations to prevent the transmission of
infectious agents in health-care settings as recommended for potentially
infectious specimens in
Protection of Laboratory Workers from Infectious
Disease Transmitted by Blood, Body Fluids, and Tissue , 2nd edition; Approved
Guideline (1997) Document M29-A, National Committee for Clinical Laboratory
Standards (NCCLS). This document contains complete information on user
protection and it can be used as reference material for instructions on laboratory
safety.
1. Turn the analyzer off.
2. Unscrew the old filter from both fittings. Discard the old filter.
3. Connect the new filter to the fittings and hand tighten them to ensure they are
sealed.