Metrohm 930 Compact IC Flex ChS/Deg Manual page 88

5.11 Metrohm Suppressor Module (MSM)
5.11.3.5 Replacing parts of the Metrohm Suppressor
Module (MSM)
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80
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 (21-1) from the housing (21-4).
￭
Pull the connecting piece (21-2) out of the housing together with
￭
the rotor (21-3).
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 (21-3) 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.
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930 Compact IC Flex ChS/Deg (2.930.1260)