Cleaning; Standard Cleaning - BRAND Titrette Instrucciones De Manejo

Cleaning

The instrument must be cleaned in the following situations to assure correct operation:
n immediately, if the hand wheels
become harder than usual to turn
n before changing the reagent
n prior to long term storage
The glass cylinder, valves, telescoping filling tube and titrating tube contain reagent!
Warning!
Follow the safety instructions (see page 36)!

Standard Cleaning

1.
Set the valve to 'Recirculation' (Fig. 1), and empty the instrument
completely by turning the hand wheels.
2.
Screw the instrument onto a bottle filled with deionized water
and rinse the instrument several times by completely filling and
emptying it (Fig. 2).
3.
Set the valve to 'Titrate', unscrew the closure cap from the
titration tube, place a suitable receiving vessel under the titrating
tube and for cleaning the titrating tube rinse the instrument
several times by completely filling and emptying it
(Fig. 3).
4.
If deposits appear in the dispensing cylinder, this process can
optionally be repeated with a suitable cleaning agent and next,
rinse again with deionized water.
5.
Screw the instrument onto an empty bottle and empty the piston
completely by executing several up and down motions of the
piston in the "Recirculation" and "Titration" valve setting (Fig. 5).
6.
For this, the piston should first be moved all the way up and then
down by a half-rotation of the hand wheel.
7.
Unscrew the air vent cap by hand or use a coin.
8.
Remove the rear housing and take out the mounting tool.
54
n prior to dismantling the instrument
n regularly when using crystallizing
liquids
n if liquid has accumulated in the
screw cap of the titration tube
1
2
3
5