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12 Cleaning
l.
Crystallizing media, e.g., alcoholic KOH
Depending on the frequency of use, we recommend that any crystal deposits above the piston be re-
moved at regular intervals of approx. 8 weeks. To do this, carry out steps f-m of the standard cleaning
procedure. To do this, carry out steps f-m of the standard cleaning procedure.
To reduce crystal deposits, always fill the instrument all the way up to the upper stop position after
titration.
12.2 Intensive cleaning
To avoid mixing up components, do not dismantle several instruments at the same time. Calibration
and, if applicable, an adjustment must always be carried out after dismantling or replacing a dispens-
ing unit.
1. Preparing for intensive cleaning
a.
Always perform a complete standard cleaning before further dismantling the instrument.
b.
Pull out the recirculation tube and the telescopic filling tube.
2 Removing and cleaning/replacing the titration tube
a.
76
Operating manual
l.
Remove any crystal deposits at the upper edge of the
dispensing cylinder, e.g. with water and a soft bottle-
brush. Then, dry it off with cellulose paper
m.
Reassemble the top part of the instrument or, if neces-
sary, further dismantle the instrument for intensive
cleaning.
NOTICE
(Note the design changes from 2012 and from serial number
01K, see Intensive cleaning, p. 78)
a.
Set the valve to 'Recirculate' and pull the valve lever up-
wards to remove it (Fig. a).
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