Metrohm 2.850.2230, Manual, Page: 109 / 150

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5 Operation and maintenance
850 Professional IC–Anion – MSM-HC – MCS – LP Gradient
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99
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Check whether solution emerges at the MSM-HC connecting
piece
(50- 2 ) . If one of the supply or discharge lines remained
blocked, the MSM-HC connecting piece (50- 2 ) must be replaced
(order number 6.2835.010).
4 Cleaning the MSM-HC rotor A
￭
Clean the sealing surface of the MSM-HC rotor A (50- 3 ) with
ethanol using a lint-free cloth.
5 Inserting the MSM-HC rotor A
CAUTION
An incorrectly inserted MSM rotor A (50- 3 ) can be destroyed
during start-up.
￭
Insert the MSM-HC rotor A (50- 3 ) into the MSM-HC housing
(50- 4 ) in such a way that the tubing connections on the rear of
MSM-HC rotor A fit into the corresponding recesses inside the
MSM-HC housing and one of the three holes of the MSM-HC
rotor A is visible from below in the slot
(50- 5 ) of the MSM-HC
housing.
￭
If the MSM-HC rotor A (50- 3 ) is correctly inserted, its sealing sur-
face will be approx. 4 mm within the MSM-HC housing (50- 4 ) . If
this is not the case, the MSM-HC rotor A must be moved into the
right position from below using a sharp object (e.g. screwdriver).
6 Cleaning the MSM-HC connecting piece
￭
Clean the sealing surface of the MSM-HC connecting piece (50- 2 )
with ethanol using a lint-free cloth.
7 Inserting the MSM-HC connecting piece
￭
Insert the MSM-HC conencting piece (50- 2 ) into the MSM-HC
housing (50- 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
(50- 4 ) .
￭
Reattach the union nut (50- 1 ) onto the coupling and tighten.
8 Connecting and conditioning the MSM-HC
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Reconnect the MSM-HC to the IC system.
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Before switching the MSM-HC over for the first time, rinse the
three suppressor units with solution for 5 minutes.