Metrohm 850 Professional IC Cation - Prep 2 - Manual (Page 54)

2.14 Peristaltic pump
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
44 ￭￭￭￭￭￭￭￭
850 Professional IC – Cation – Prep 2
4 Guide the other end of the connection capillary out of the instrument
through a capillary feed-through.
Caution
If the sample degasser is not used, the input and output must be
sealed with the 6.2744.220 thread stoppers.
2.14 Peristaltic pump
2.14.1 Principle of the peristaltic pump
The Peristaltic pump is used for pumping sample and auxiliary solutions. It
can rotate in both directions.
The peristaltic pump pumps liquids according to the principle of displace-
ment. The pump tubing is clamped between the rollers (24-3) and the
tubing cartridge (24-5). During operation, the peristaltic pump drive
rotates the roller hub (24-2), so that the rollers (24-3) push the liquid for-
ward in the pump tubing.
6
1 4
3
2
5
7
Figure 24 Peristaltic pump
1 Knurled screw in the mounting pin 2 Roller hub
3 Rollers 4 Cartridge holder