Metrohm 797 VA Computrace User Manual

Page 53

2.8

Connection of Dosing devices

797 VA Computrace / Hardware-Manual 8.797.8001EN

Exchange unit 806

The Exchange unit 806 mounted on the Dosimat can be changed only in the ex-
change position which is reached after filling. Please proceed as follows:

1 Fill Exchange unit

At the start of the VA Computrace program, the exchange unit is automatically
filled. So this step is only necessary if the Dosimat has already been used
during the running program session.

• Click on

MAIN WINDOW / Utility / Dosino control

to open the

DOSINO

CONTROL

window.

• Click the

button of the corresponding Dosimat to fill the Ex-

change unit installed on the Dosimat.

2 Change Exchange unit

• Unscrew connection nipple of the PTFE tubing of the 4-way microtip 30

from connection 2 and take off old Exchange unit.

• Mount new Exchange unit on Dosimat, the new Exchange unit is automati-

cally identified.

• Screw connection nipple of the PTFE tubing of the 4-way microtip 30 onto

connection 2 of the flat stopcock on the Exchange unit.

3 Initialize Dosimat(s)

• Click on

MAIN WINDOW / Utility / Dosino control

to open the

DOSINO

CONTROL

window.

• Click the

button of the corresponding Dosimat to empty and

refill the Exchange unit installed on the Dosimat.

• Check if there are air bubbles left in the glass cylinder of the Exchange unit.

If this is the case, repeat the flushing procedure by clicking the

button.

• Close the

DOSINO CONTROL

window.