Metrohm 940 Professional IC Vario ONE/Proep 2 - Manual (Page 45)

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3 Installation
940 Professional IC Vario ONE/Prep 2 (2.940.1120)
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The contact pressure is now set optimally.
3.15.2 Mode of operation for 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 based on the principle of displace-
ment. The pump tubing is clamped between the rollers (13-5) and the
tubing cartridge (13-2). During operation, the peristaltic pump drive
rotates the roller hub (13-6), so that the rollers (13-5) advance the liquid
in the pump tubing.
Figure 13 Peristaltic pump
1 Contact pressure lever 2 Tubing cartridges (6.2755.000)
3 Cartridge holder 4 Snap-action lever
5 Rollers 6 Roller hub
7 Mounting bolt