Metrohm 2.942.0300, Manual, Page: 49 / 56

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5 Operation and maintenance
942 Extension Module Vario ChS-PP (2.942.0300)
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41
Replacing parts of the Metrohm Suppressor Module (MSM)
1 Disconnecting the Metrohm Suppressor Module (MSM) from
the IC system
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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 (11- 1 ) from the housing (11- 4 ) .
￭
Pull the connecting piece (11- 2 ) out of the housing together with
the rotor (11- 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.
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Loosen the connecting piece from the rotor with a turning move-
ment.
3 Cleaning the new rotor
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Clean the sealing surface of the new rotor (11- 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.
NOTICE
The adapter (6.2842.020) (see "Inserting small rotors", page 23) is
required in order to insert a small rotor into the suppressor drive.