BRAND Titrette Instrucciones De Manejo página 76

12 Cleaning
e.
i.
j.
k.
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 reduce crystal deposits, always fill the instrument all the way up to the upper stop position after
titration.
76
Operating manual
e.
Screw the instrument onto an empty bottle and empty
the piston completely by executing several up and
down piston movements in the 'Recirculation' and
'Titration' valve setting.
f.
First move the piston all the way up and then down by a
half-rotation of the hand wheel.
g.
Unscrew the air vent cap by hand or use a coin.
h.
Remove the rear housing shell and take out the assem-
bly tool.
i.
Loosen the safety ring of the dispensing unit with the
assembly tool and unscrew it completely by hand.
j.
Pull the piston rod locking mechanism out to the stop
(Fig. 10).
k.
Move the top part of the instrument all the way to the
top by turning the hand wheels and remove it (Fig. 11).
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 (Fig. 12).
m.
Reassemble the top part of the instrument or, if neces-
sary, further dismantle the instrument for intensive
cleaning.
NOTICE
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