Metrohm 850 Professional IC Anion MSM-HC - LP-Gradient - Manual (Page 65)

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3 Installation
850 Professional IC Anion MSM-HC LP Gradient
￭￭￭￭￭￭￭￭ 55
The rinsing and regeneration solutions are pumped with a peristaltic pump
(see Chapter 3.19, page 55).
3.19 Peristaltic pump
3.19.1 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 (30-3) and the
tubing cartridge (30-5). During operation, the peristaltic pump drive
rotates the roller hub (30-2), so that the rollers (30-3) push the liquid for-
ward in the pump tubing.
6
1 4
3
2
5
7
Figure 30 Peristaltic pump
1 Knurled screw in the mounting pin 2 Roller hub
3 Rollers 4 Cartridge holder
5 Tubing cartridges 6.2755.000 6 Contact pressure lever
7 Snap-action lever