Metrohm 940 Professional IC Vario ONE/ChS/PP - Manual (Page 97)

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5 Operation and maintenance
940 Professional IC Vario ONE/ChS/PP (2.940.1300)
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Replacing parts of the suppressor
1 Disconnecting the suppressor from the IC system
￭ Switch off the instrument.
￭ Disconnect all capillaries of the suppressor from the IC system.
2 Dismantling the suppressor
￭ Unscrew union nut (23-1) from the housing (23-4).
￭ Pull the connecting piece (23-2) out of the housing together with
the the rotor (23-3).
If rotor A gets stuck in the housing, you can knock it loose as fol-
lows:
Put a pointed object into the slot in the housing and use it to
knock rotor A loose.
￭ Detach the connecting piece from the rotor.
3 Cleaning the new rotor
￭ Clean the surface of the new rotor (23-3) with ethanol using a
lint-free cloth.
4 Inserting the new rotor
CAUTION
Rotor A may be destroyed during start-up if not inserted correctly.
￭ Insert the new rotor (23-3) into the housing (23-4) 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 (23-5).