Metrohm 870 KF Titrino plus Installation - Manual (Page 15)

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870 KF Titrino plus ￭￭￭￭￭￭￭￭ 9
2.3 Setting up the aspiration and solvent bottle
Mode of operation of the 803 Ti Stand
With the 803 Ti Stand, on the one hand you can add fresh solvent (dehy-
drated methanol or a special KF solvent solution) easily at the press of a
button, while on the other hand you can aspirate the KF titration cell at
the press of a button. This can be accomplished if all of the required tub-
ings have been set up correctly and if all of the connectors have been
screwed tightly enough to seal.
The following diagram gives you an overview of the mode of operation of
the 803 Ti Stand:
1
2
3
4
A B
1. Air will be pumped into the solvent bottle (on the left) for as long as
the left-hand key A is kept pressed down.
2. The overpressure in the solvent bottle pushes fresh solvent into the
KF titration cell.
3. Air will be aspirated from the aspiration bottle (on the right) for as
long as the right-hand button B is kept pressed down.
4. The vacuum in the aspiration bottle aspirates the liquid out of the KF
titration cell and into the suction bottle.
Setting up the solvent bottle
Methanol or KF solvent is pumped out of the supply bottle by overpres-
sure and into the KF titration cell. All of the bottle top connectors must be
leak-proof for this reason.