Roche Diagnostics
160 Instructions for Use · Version 10.0
10 Troubleshooting 9180 Electrolyte Analyzer
Service functions
Potassium electrode not calibrated
If the potassium electrode cannot be calibrated after an electrode exchange, then a
serum or plasma sample should be introduced as an external sample.
o Call up the procedure for testing electrodes.
u Testing the electrodes (p. 159).
o Press NO until Test External Sample? is displayed. Press YES.
Prepare a serum or plasma sample and introduce the sample:
o The prompt Open Sample Door Introduce Sample appears. Introduce the
sample.
o The sample is aspirated until the prompt Wipe Probe/Close Sample Door is
displayed.
o Test the sample for 15 minutes.
o Repeat the procedure a second time.
Testing the sample sensor
The dry sample sensor should read between 80-120 units. Aspirating clear fluid
should increase this value by at least 40 units.
o Press NO until Test Sample Sensor? is displayed.
o Press YES and the analyzer will display the current sample sensor reading:
Dry: 80-120: 99
YES=Pump/NO=Exit
o Press YES to introduce an external sample through the probe. An example of the
analyzer display after this step would be:
External: 236
Pump: NO=OFF
o Press NO to exit and after a short Please Wait message, the prompt
Test SnapPak Sensor? will appear.
Testing the SnapPak sensor
o Press NO until Test SnapPak Sensor? is displayed.
o Press YES and the current SnapPak sensor status will be displayed:
SnapPak: I
I=In O=Out
o "I" on the display indicates that the SnapPak is inserted properly, "O" means that
the SnapPak either is not installed or not inserted correctly.
q
Allow 10 seconds for the analyzer to detect the SnapPak.
q
If the SnapPak has been removed during this test, a calibration should be performed to
prime all fluid lines.
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