Metrohm 940 Professional IC Vario ONE/SeS/PP/Prep 3 - Manual (Page 103)

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5 Operation and maintenance
940 Professional IC Vario ONE/SeS/PP/Prep 3 (2.940.1530)
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￭ Insert the rotor (25-3) into the housing (25-4) 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 (25-5).
￭ The rotor's sealing surface is approximately 4 mm inside the hous-
ing if the rotor is inserted correctly. 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 sealing surface of the connecting piece (25-2) with
ethanol using a lint-free cloth.
7 Inserting the connecting piece
￭ Insert the connecting piece (25-2) 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 (25-1) 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.
5.12.3.4 Replacing parts of the suppressor
In the following cases, it might be necessary to replace parts of the sup-
pressor:
￭ Loss of suppressor capacity which cannot be eliminated (reduced phos-
phate 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.