Priming - BRAND Titrette 4760141 Operating Manual

4 Assembly
5. Transporting the instrument
a.

4.2 Priming

Before first use:
After final production inspection, glycerin and ethanol residues may still be present in the instrument.
To prevent media from mixing with these residues, rinse the instrument thoroughly before the first
use and discard the first dispensed volumes. Avoid splattering.
b.
c.
56
Operating manual
a.
When mounted to a reagent bottle, always carry the in-
strument as shown in the figure!
Avoid splashing the reagent
Potential health risk, especially with hazardous
media
> Never turn the hand wheels when the valve
is set to 'Titrate' and the titrating tube is
closed with the screw cap!
> Avoid splashing the reagent! The reagent
can drip out from the titrating tube and
screw cap.
NOTICE
a.
Ensure that the screw cap of the titrating tube is
screwed on tightly.
b.
Turn the valve in the direction of the arrow to 'Recircu-
late'.
c.
First, turn the hand wheels to move the piston all the
way down. To fill, rotate the piston no further than half-
way up, and then empty it again.
If filling is not possible, see Troubleshooting, p. 76
Then rotate the hand wheel half way several times to aspi-
rate liquid, each time using a single stroke to the lower posi-
tion to empty it into the bottle. Repeat the procedure ap-
proximately 5 times until there are no more large air bubbles
under the piston.
A few bubbles less than 1 mm in size are permitted.
WARNING
NOTICE
NOTICE
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