5.1 Maintenance
5.1.1 Daily Maintenance
1 Use neutral wash solution and wet cloth to clean the spillage on the instrument.
2 Wash the tubing with distilled water or DI water before shutting down the
analyzer (for instrument installed with flow cell).
3 When the system is not in use, make sure that the tubing and the flow cell is
filled with clean distilled water (or DI water).
5.1.2 Weekly Maintenance
1、 Wash the waste bottle interior with clean water. Soak the bottle with disinfector if
necessary.
2、 If the instrument will not be in use for a long time. Detach the pump head from
the pump to elongate the service life of the pump tubing. Refer to the step 2 in
5.3.1 for details about detaching pump head. Do not disconnect the connection
of the tubing.
5.1.3 Irregular Maintenance
5.1.3.1 Cleaning Flow Cell
1 Low Background
Contamination of the flow cell or bubble in the flow cell might cause low
background. You can use the absolute alcohol to clean the flow cell ( also
applies for bubble in the flow cell). The procedure is as follows:
A） Click Wash on the software to wash the tubing. After 10 seconds, click
Stop.
B） Prepare about 5 ml absolute alcohol in the tube. Put the aspiration tubing
into the tube and click Wash. After 5 seconds, click Stop. Wait for 10
seconds.
C） Wash with absolute alcohol for 5 seconds again, and then wait for 10
seconds. Wash the tubing with DI water for 10-20 seconds. The cleaning is
completed.
D） Other recommended wash solutions include: 0.1N NaOH (KOH) solution
(with some surfactant); or, enzyme solution capable of decomposing the
protein; or, reagent used in chemistry analysis, capable of removing the
protein, total protein reagent (biuret) and etc.
2 Before switching to other tests
Before switching to other tests, it is recommended the flow cell be washed with
distilled water (or DI water). This is very necessary for tests which carryover
might take place, or samples whose concentration differs a lot. The cleaning
should last for no less than 5 seconds. The amount of distilled water (or DI water)
should be around 1.5 ml. You can also use the wash solution specifically for
chemistry analyzer to wash first, then with the distilled water (or DI water).
3 Cleaning Exterior of the Flow Cell
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