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Standard Cleaning
1. Screw the instrument onto an empty bottle and empty it com-
pletely by dispensing (Fig. 1). If the instrument is equipped with a
recirculation valve, it must be emptied in both the "dispensing"
and 'recirculating' settings.
2. Screw the instrument onto a bottle filled with a suitable cleaning
agent (e.g. deionized water) and rinse the instrument several
times by completely filling and emptying it.
3. If the instrument is equipped with a recirculation valve, after
rinsing the instrument, it must also be rinsed in the 'recirculating'
setting (Fig. 2).
■
before the first use
■
immediately when the piston
is difficult to move
■
before changing the reagent
■
prior to long term storage
■
prior to dismantling the instrument
The instrument must be cleaned in the following situations to assure correct operation:
■
prior to changing the valves
■
regularly when using liquids which form
deposits (e.g., crystallizing liquids)
■
regularly when liquids accumulate in the
screw cap
The instrument should
not
be autoclaved!
12. Cleaning
Warning!
Cylinder, valves, telescoping filling tube and discharge tube con-
tain reagent. Point the valves and tube openings away from your
body. Wear protective clothing, eye protection and appropriate
hand protection.
Note:
'Cleaning for trace analysis' see page 42.
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