Metrohm 882 Compact IC plus – Anion - Manual (Page 88)

5.11 Metrohm Suppressor Module (MSM) ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
78 ￭￭￭￭￭￭￭￭ 882 Compact IC plus – Anion
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.
Replacing parts of the suppressor
Replace the parts of the suppressor as follows:
1 Disconnecting the suppressor from the IC system
￭ Switch off the instrument.
￭ Disconnect all capillaries of the suppressor from the IC system.
2 Dismantling the suppressor
￭ Unscrew union nut (36-1) from the housing (36-4).
￭ Pull the connecting piece (36-2) and the rotor (36-3) out of the
housing.
The connecting piece and the rotor normally stick to one another
– if this is not the case: Take a sharp object, insert it into the slot
of the housing (36-5) and pull out the rotor in this way.
￭ Detach the connecting piece from the rotor.
3 Cleaning the new rotor
￭ Clean the surface of the new rotor (36-3) with ethanol using a
lint-free cloth.
4 Inserting the new rotor
Caution
An incorrectly inserted rotor can be destroyed during start-up.
￭ Insert the new rotor (36-3) into the housing (36-4) 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 (36-5).