Siemens ADVIA 2120, Руководство оператора, Страница: 64 / 477

4-18 Maintaining the Analyzer
4. Use a hexagonal wrench to loosen the set screws ( 4 )
on the metal bushing ( 5 ) on the plunger stem.
Remove and keep the bushing. Discard the plunger
(
6 ).
5. Inspect the syringe. If the inside surface is dirty, use
a wash bottle with 25% solution of household
bleach and water to clean it. Rinse thoroughly with
water.
6. Install the new plunger:
a. Insert the pin gauge (
7
) from the repair kit into
the input port of the syringe
b. Wet the plunger with saline solution and insert
it into the syringe barrel. Slide the plunger up
until it touches the pin gauge.
CAUTION
Do not force plunger into the syringe. Forcing will distort the tip.
c. On the 50-µL syringe, replace the small plastic bushing into the syringe.
d. Replace the metal bushing onto the plunger stem with
the narrow collar of the bushing (
5
) toward the plunger
( 6 ).
e. Push the metal bushing up against the syringe, then
tighten the set screws (
4 ).
f. Remove the pin gauge from the input port. a
6
5
7. Reinstall the sample syringe:
a. With the metal bushing end-first, insert the syringe plunger into the slot
at the bottom of the carriage.
b. Slide the syringe up and into the mounting hole in the pump drive frame
with the input port facing left on the RBC/baso/retic channel and facing
right on the perox channel.
c. 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.
d. Reconnect all the tubing to the syringe fittings.