Metrohm 850 Professional IC MSM-HC MCS Prep 3 - Manual (Page 120)

5.13 High Capacity Metrohm Suppressor Module (MSM-HC)
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850 Professional IC Anion – MSM-HC – MCS – Prep 3
7 Inserting the MSM-HC connecting piece
￭ Insert the MSM-HC conencting piece (55-2) into the MSM-HC
housing (55-4) in such a way that the connector 1 is on top and
the three pins of the connecting piece fit into the corresponding
recesses on the MSM-HC housing (55-4).
￭ Reattach the union nut (55-1) onto the coupling and tighten.
8 Connecting and conditioning the MSM-HC
￭ Reconnect the MSM-HC to the IC system.
￭ Before switching the MSM-HC over for the first time, rinse the
three suppressor units with solution for 5 minutes.
5.13.3.3 Replacing parts of the MSM-HC
It may be necessary to replace parts of the MSM-HC in the following
cases:
￭ Loss of suppression capacity which cannot be eliminated (reduced
phosphate sensitivity and/or significant rise in the baseline).
￭ Blockage of the MSM-HC which cannot be eliminated (solutions can
no longer be pumped through the suppressor).
Both the MSM-HC rotor A (55-3) and the MSM-HC connecting piece
(55-2) with its supply and discharge lines can be replaced.
Replacing parts of the MSM-HC
Replace parts of the MSM-HC as follows (see Figure 55, page 108):
1 Disconnecting the MSM-HC from the IC system
￭ Switch off the instrument.
￭ Disconnect the MSM-HC from the separation column, peristaltic
pump and detector.
2 Dismantling the MSM-HC
￭ Unscrew union nut (55-1) from the MSM-HC housing (55-4).
￭ Pull the MSM-HC connecting piece (55-2) and the MSM-HC rotor
A (55-3) out of the MSM-HC housing (55-4). The connecting
piece and the MSM-HC rotor A normally stick to one another – if
this is not the case: Take a sharp object, insert into the slot (55-5)
in the MSM-HC housing, and pull out the MSM-HC rotor A (55-3)
in this way.
￭ Detach the MSM-HC connecting piece (55-2) from MSM-HC rotor
A (55-3).