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e.
i.
j.
k.
997469
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.
k.
Move the top part of the instrument all the way to the
top by turning the hand wheels and remove it.
12 Cleaning
75
Operating manual
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