Metrohm 881 Compact IC pro – Anion - Manual (Page 97)

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5 Operation and maintenance
881 Compact IC pro – Anion
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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 (39-1) from the housing (39-4).
￭ Pull the connecting piece (39-2) and the rotor (39-3) 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 (39-5) 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 (39-3) 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 (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.
5 Cleaning the new connecting piece
￭ Clean the surface of the new connecting piece (39-2) with etha-
nol using a lint-free cloth.