Mode Of Operation For The Peristaltic Pump; Figure 9 Peristaltic Pump - Metrohm 942 Extension Module Vario LQH Manual

3.5 Peristaltic pump
3.5.2

Mode of operation for the peristaltic pump

1 Contact pressure lever
3 Cartridge holder
5 Rollers
7 Mounting bolt
￭￭￭￭￭￭￭￭
22
When liquid starts flowing, raise the contact pressure lever by an
￭
additional two ratchet increments.
The contact pressure is now set optimally.
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 (9-5) and the tub-
ing cartridge (9-2). During operation, the peristaltic pump drive rotates
the roller hub (9-6), so that the rollers (9-5) advance the liquid in the
pump tubing.
Figure 9 Peristaltic pump
2 Tubing cartridge (6.2755.000)
4 Snap-action lever
6 Roller hub
942 Extension Module Vario LQH (2.942.0070)
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭