Metrohm 850 Professional IC AnCat - Manual (Page 99)

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4 Operation and maintenance
850 Professional IC – AnCat
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￭ Insert the new MSM rotor A (44-3) in the MSM housing (44-4) in
such a way that the tubing connections on the rear of MSM rotor
A fit into the corresponding recesses inside the MSM housing and
one of the three holes of MSM rotor A is visible from below in the
slot (44-5) of the MSM housing.
￭ If the MSM rotor A (44-3) is correctly inserted, its sealing area will
be approx. 4 mm within the MSM housing (44-4). If this is not the
case, MSM rotor A must be moved into the right position from
below using a sharp object (e.g. screwdriver).
5 Cleaning the MSM connecting piece
￭ Clean the sealing surface of the MSM connecting piece (44-2)
with ethanol using a lint-free cloth.
6 Inserting the new MSM connecting piece
￭ Insert the MSM conencting piece (44-2) into the MSM housing
(44-4) in such a way that the connector 1 is on top and the three
pins of the MSM connecting piece fit into the corresponding
recesses on the MSM housing (44-4).
7 Connecting and conditioning the MSM
￭ Reconnect the MSM to the IC system.
￭ Before switching the MSM over for the first time, rinse the three
suppressor units with solution for 5 minutes.
4.12 Peristaltic pump
4.12.1 Operation
The pumping capacity of the peristaltic pump depends on the drive speed
(set via software), the contact pressure and, above all, the internal diame-
ter of the pump tubing. Depending on the application, different pump
tubings are used.
Caution
The service life of the pump tubings also depends on the contact pres-
sure. Therefore fully lift the tubing cartridges by loosening the snap-
action lever (28-10) on the right-hand side if the peristaltic pump is to
be turned off for a longer period. Once set, the contact pressure
remains unaffected.