4 replacing parts of the suppressor – Metrohm 930 Compact IC Flex ChS/PP/Deg User Manual

Page 92

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5.11 Suppressor

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930 Compact IC Flex ChS/PP/Deg (2.930.1360)

Insert the rotor (22-3) into the housing (22-4) 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 (22-5).

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 (22-2) with
ethanol using a lint-free cloth.

7 Inserting the connecting piece

Insert the connecting piece (22-2) 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 (22-1) 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 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.

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