Metrohm 850 Professional IC MSM-HC MCS Prep 3 - Manual (Page 62)

3.15 Peristaltic pump
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850 Professional IC Anion – MSM-HC – MCS – Prep 3
D Preconcentration column E Separation column
F MSM-HC
Note
In order to prevent impurities by the transfer water, a Metrosep I
Trap (6.1014.200) can be installed between the injection valve 1 and
the peristaltic pump.
3.15 Peristaltic pump
3.15.1 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