Metrohm 850 Professional IC MSM-HC MCS Prep 3 - Manual (Page 109)

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5 Operation and maintenance
850 Professional IC Anion – MSM-HC – MCS – Prep 3
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3 Connecting the SPM to the IC system
￭ Reconnect the SPM to the IC system. If the capacity problems
remain, the SPM rotor A must be replaced (see Chapter 5.10.3.3,
page 101).
5.10.3.2 Cleaning the SPM
It may be necessary to clean the SPM in the following cases:
￭ Increased backpressure on the connection tubings of the SPM.
￭ Blockage of the SPM which cannot be eliminated (solutions can no lon-
ger be pumped through the SPM).
￭ Jamming of the SPM which cannot be eliminated (SPM can no longer
be switched over).
1 2 3 4
5
Figure 53 SPM – Components
1 Union nut 2 SPM connecting piece (6.2835.010)
3 SPM rotor A (6.2835.000)
Cation exchanger. 4 SPM housing
5 Slot in the SPM housing
SPM cleaning
Clean the SPM as follows:
1 Disconnecting the SPM from the system
￭ Switch off the instrument.
￭ Disconnect capillary connections of the SPM from the system.
2 Dismounting SPM
￭ Unscrew the union nut (53-1) from the SPM housing (53-4).