Metrohm 765 Dosimat - Manual (Page 33)

3.2 Diagnosis
765 Dosimat
29
The spindle moves 80 mm with respect to spindle zero.
Instead of the spindle height one can also measure the expelled volume (corresponding to the max. volume
of the exchange unit).
17. Actuate and simultaneously take the time until the dosimat is in 'ready'
position again.
Filling time: one cock cycle 1 s
filling 18 ... 20 s
General rules:
Spindle and cock must move in regular speed (observe sound!)
In the filling position the cock coupling must turn the lever of the exchange unit blamelessly to the left stop
(almost without play and without jamming).
18. Knob 'dV/dt' fully to the left.
19. : select DIS R.
20.
DIS R 0.000 ml
21.
V-DIS 1. ml
22. Depending on the exchange unit used, enter the volume as below:
1 ml: 0.02 ml
5 ml: 0.1 ml
10 ml: 0.2 ml
20 ml: 0.4 ml
50 ml: 1
ml
23.
24. (depress briefly) and with a stop watch take the time until the cock starts
turning.
The time must be 14 ... 24 s.
25. Reset the parameter if under 5. the reading was auto fill = on .