Metrohm 881 Compact IC pro – Anion - Manual (Page 96)

5.11 Metrohm Suppressor Module (MSM)
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
86 ￭￭￭￭￭￭￭￭
881 Compact IC pro – Anion
5 Inserting the rotor
Caution
An incorrectly inserted rotor can be destroyed during start-up.
￭ Insert the rotor (39-3) into the housing (39-4) in such a way that
the tubing connections on the rear of rotor fit into the corre-
sponding recesses inside the housing and one of the three holes
of the rotor is visible from below in the slot of the housing (39-5).
￭ If the rotor is correctly inserted, its sealing surface will be approx.
4 mm within the housing. If this is not the case, the rotor must be
moved into the right position from below using a sharp object.
6 Cleaning the connecting piece
￭ Clean the surface of the connecting piece (39-2) with ethanol
using a lint-free cloth.
7 Inserting the connecting piece
￭ Insert the connecting piece (39-2) into the housing in such a way
that the connector 1 is on top and the three pins of the connect-
ing piece fit into the corresponding recesses on the housing.
￭ Reattach the union nut (39-1) onto the housing and tighten by
hand (do not use a tool).
8 Connecting and conditioning the suppressor
￭ Reconnect the suppressor to the IC system.
￭ Before switching the suppressor over for the first time, rinse each
of the three suppressor units with solution for 5 minutes.
5.11.3.4 Replacing parts of the suppressor
In the following cases, it might be necessary to replace parts of the sup-
pressor:
￭ Loss of suppression capacity which cannot be eliminated (reduced
phosphate sensitivity and/or significant rise in the baseline).
￭ Blockage of the suppressor which cannot be eliminated (solutions can
no longer be pumped through the suppressor).
Both the rotor and the connecting piece can be replaced.