Metrohm 843 Pump Station with peristaltic pump - Manual (Page 20)

3.2 Mounting tubings ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 843 Pump Station with Peristaltic Pumps
This prevents liquid from leaking at excessively high pressures.
4 Place the pump tubing in the pump head as shown in the figure.
5 Fasten the tubing with the tube clamps.
Take care to ensure that the tubing is as centered as possible on the
roller.
6 Apply pressure to the pressure clamp and clamp tightly with the fixing
lever (see Chapter 2.3, page 9).
7 Tighten the set screw to an extent sufficient to ensure that the pump
tubing is unable to shift position and that a uniform flow of liquid is
conveyed when the pump is switched on.
The clamping screw can, if necessary, be readjusted while the pump is
running.
3.2.2 Inlet and outlet tubing
Two different types of tubings are available as inlet and outlet tubing. Both
of them are included in the scope of delivery (see Chapter 10.1.1, page
34):
￭ PVC tubing (6.1801.120), 2 x 2 m
￭ PTFE tubing (6.1812.000), 1 x 4 m
The question of which of the two types of tubing you should use is primarily
dependent on the type of solvent used. PVC tubing is softer and has the
advantage of causing less noise during the pumping procedure.
Mount the inlet and outlet tubing as follows:
1 Cut the inlet and outlet tubing to appropriate lengths.