Metrohm 774 Oven Sample Processor - Manual (Page 19)

2.4 Arranging the accessories
774 Oven Sample Processor, Instructions for use 13
2.4.4 Adjusting the needle position
Positioning the needle
In addition to the adjustment of the sample rack, the
position of the needle (radial positioning) may be
adjusted.
After the adjustment of the sample rack proceed as
follows:
1. Place a sealed beaker under the needle.
2. Lower the needle on to the seal.
3. Loosen the Allen screws of the sliding de-
vices.
4. Position the needle in the centre of the seal.
5. Fasten the sliding devices.
6. Press . The instrument moves to
initial position.
7. Remove rack.
11
1 ±1
,5
44
±1
Distances of the guide head and rod
(in mm)
8. Check the distances according to the draw-
ing on the right and adjust if necessary.
Allen screws