Metrohm 746 VA Trace Analyzer - Manual (Page 72)

3.10 Connection of 700 Dosinos
746 VA Trace Analyzer / 747 VA Stand
3-45
3.10.4 Changing the Dosing unit
If the Dosing unit is changed when the Dosino is in the dosing posi-
tion, the Dosino can get destroyed! Therefore always make sure that
the Dosino is in the exchange position (see parameter Position on
dialog page "DOSIMATS") before changing the Dosing unit.
The Dosing unit mounted on the 700 Dosino can be changed only in the exchange
position. Please proceed as follows:
1 Switch to exchange position
• Select dialog page "DOSIMATS".
• Select desired Dosino with the cursor keys and press softkey
position> : The Dosino is switched to the exchange position and the pa-
rameter Position is set to exchange .
2 Change Dosing unit
• Unscrew connection nipple of the PTFE tubing of the 4-way microtip 47 47
from connection 1 and change Dosing unit (procedure see 700 Instruc-
tions for use, section 2.3 and 2.4).
• Screw connection nipple of the PTFE tubing of the 4-way microtip 47 47 onto
connection 1 of the new Dosing Unit mounted on the Dosino.
3 Initialize Dosino
• Select dialog page "DOSIMATS".
• Select desired Dosino with the cursor keys and press softkey
Dosino> for initializing the Dosino. The cylinder is filled and excess solu-
tion is expelled to the measuring vessel. With standard accessories, all
tubings to the measuring vessel will have been filled at the end of the ini-
tializing procedure.