Removing Electrodes - Siemens ADVIA 2400 Maintenance Procedures

The acceptable ISE slope is between 45.0 and
63.0. Slopes outside of this range are flagged
as shown in the table. A flagged slope fails
the calibration. The slope limits are defined at
the ISE Parameter Settings window.
Replace the reference electrode when the reference electrode value is <500.
Checking the reference electrode value
1. At the Menu Panel, select
2. At the ISE Monitor window, at the bottom of the Calib.monitor: Serum area, check
the value of the Ref. electrode field.
3. If the Ref. electrode value is

Removing electrodes

1. At the Menu Panel, select
2. In the Period. wash area, select
3. Using a Phillips screwdriver, remove the screws (
DPP shield to the analyzer panel.
4. Push the DPP shield to the right and slowly lift the DPP shield until it reaches
approximately a 90° angle, then gently lift the tab of the DPP shield and remove.
5. Loosen the thumb screw and lift the ISE cover.
6. Disconnect the electrode connectors.
7. Remove the thumbscrew (
block containing the electrode. (See Figure 5-37.)
8. Remove the electrode to replace.
Installing electrodes
NOTE
Make sure the K and Na electrodes are conditioned. When the Cl and Ref electrodes are
taken out of their packaging, they are wet. Wipe the Cl electrode thoroughly, and wash
the Ref electrode using water.
NOTE
To store the reference electrode, refer to Storing the Reference Electrode on page 169.
1. Assemble the new electrodes in the correct order:
2. Set the electrodes in place, paying careful attention not to leave a space between
them.
Make sure there is an 0-ring between each electrode and that the ridges on the side of
each electrode fits into the depressions on the side of the electrode next to it.
3. Tighten the thumbscrew while holding down each electrode with the retaining plate.
Maintenance
Mark
Maint ., then select ISE Monitor
, replace the reference electrode.
less than 500.0
Maint. , then select ISE Operation
OFF , then select Set
1
) to release the plate that secures the electrodes and the
1
ISE Slope Range
H > 65.0
h 63.1 to 65.0
l 38.0 - 44.9
L < 38.0
.
.
.
, see Figure 5-1) that secure the
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