Siemens ADVIA 2120, Operator'S Manual, Page: 58 / 477

4-12 Maintaining the Analyzer
CAUTION
When cleaning the 50 µL syringe, never pull the
plunger through the small plastic bushing inside the
syringe. This will cause damage to the syringe
plunger tip. Use a small hex wrench to pop the
bushing all the way out of the syringe, then remove
the plunger from the syringe with both bushings still
on the plunger stem. Do not remove the plastic
bushings from the 50 µL plunger.
2. Remove the dirty plunger from the syringe. Do not remove the white bushing
from the plunger or the plunger from the stainless steel barrel bushing on the
bottom. Using a soft lint-free tissue, gently wipe the plunger tip. Make sure
all debris is removed from the grooves.
3. Thoroughly rinse the syringe barrel with water.
4. Slide the cleaned plunger into the syringe. Use a little saline solution, if
necessary. Reseat the small plastic bushing into the syringe barrel, then
replace the syringe
a. Insert the bushing end of the syringe into the slot at the bottom of the
carriage.
b. Make sure that the input port on the RBC/Baso/Retic channel is facing
left, and on the Perox channel it is facing right.
c. Slide the syringe up and into the mounting hole in the pump drive frame.
d. Install the washer and the knurled nut and hand tighten the nut.
CAUTION
Be careful not to cross-thread or overtighten the knurled nut and the
input/output fittings.
e. Reconnect all the syringe fittings.
5. Check analyzer performance by
•
Checking saline backgrounds
•
Running a whole blood primer
•
Running controls