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6 Operation and maintenance
930 Compact IC Flex Oven/SeS/PP (2.930.2500)
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6.11.3.5 Replacing parts of the Metrohm Suppressor
Module (MSM)
Parts of the Metrohm Suppressor Module (MSM) may need to be replaced
in the following cases:
■ Irremediable loss of suppressor capacity (reduced phosphate sensitivity
and/or significant rise in the baseline).
■ Irremediable blockage of the MSM (solutions can no longer be pum-
ped through the MSM).
Both the rotor and the connecting piece can be replaced.
Replacing parts of the Metrohm Suppressor Module (MSM)
1
Disconnecting the Metrohm Suppressor Module (MSM) from
the IC system
■ Switch off the instrument.
■ Disconnect all capillaries of the MSM from the IC system.
2
Dismantling the Metrohm Suppressor Module (MSM)
■ Unscrew the union nut (24-1) from the housing (24-4).
■ Pull the connecting piece (24-2) out of the housing together with
the rotor (24-3).
If the rotor gets stuck in the housing, you can push it out as fol-
lows:
Put a pointed object into the slot in the housing and use it to
push out the rotor.
■ Loosen the connecting piece from the rotor with a turning move-
ment.
3
Cleaning the new rotor
■ Clean the sealing surface of the new rotor (24-3) with ethanol
using a lint-free cloth.
4
Inserting the new rotor
CAUTION
The rotor may be destroyed during start-up if it is not inserted cor-
rectly.