Metrohm 850 Professional IC Anion MSM-HC - LP-Gradient - Manual (Page 99)

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5 Operation and maintenance
850 Professional IC Anion MSM-HC LP Gradient
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￭ Check whether solution emerges at the MSM-HC connecting
piece (44-2). If one of the supply or discharge lines remained
blocked, the MSM-HC connecting piece (44-2) 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 (44-3) with
ethanol using a lint-free cloth.
5 Inserting the MSM-HC rotor A
Caution
An incorrectly inserted MSM rotor A (44-3) can be destroyed
during start-up.
￭ Insert the MSM-HC rotor A (44-3) into the MSM-HC housing
(44-4) 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 (44-5) of the MSM-HC
housing.
￭ If the MSM-HC rotor A (44-3) is correctly inserted, its sealing sur-
face will be approx. 4 mm within the MSM-HC housing (44-4). 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 (44-2)
with ethanol using a lint-free cloth.
7 Inserting the MSM-HC connecting piece
￭ Insert the MSM-HC connecting piece (44-2) into the MSM-HC
housing (44-4) 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 (44-4).
￭ Reattach the union nut (44-1) onto the coupling and tighten.
8 Connecting and conditioning the MSM-HC
￭ Reconnect the MSM-HC to the IC system.
￭ Before switching the MSM-HC over for the first time, rinse the
three suppressor units with solution for 5 minutes.