4.10 Suppressor
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80
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883 Basic IC plus
4.10.3.3 Cleaning the suppressor
In the following cases, it may be necessary to clean the suppressor:
￭ Increased backpressure at the suppressor's connection tubing.
￭ Irremediable blockage of the suppressor (solutions can no longer be
pumped through the suppressor).
￭ Irremediable jamming of the suppressor (suppressor can no longer be
switched over).
Cleaning 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 the union nut (25-1) from the housing (25-5).
￭ Pull the connecting piece (25-2) out of the suppressor drive
together with the rotor (25-3).
If rotor A gets stuck in the suppressor drive, you can push it out as
follows:
Put a pointed object into the slot in the suppressor drive and use
it to push out the rotor A.
￭ Loosen the connecting piece from the rotor.
￭ Remove the rotor from the adapter.
3
Rinsing the capillaries
￭ Connect each of the 6 PTFE capillaries connected to the connect-
ing piece (25-2) in sequential order to the high-pressure pump
and pump ultrapure water through them.
￭ Check whether water comes out at the connecting piece.
If one of the capillaries remains blocked, the connecting piece (25-2)
must be replaced (order number 6.2835.010).
4
Cleaning the rotor
￭ Clean the sealing surface of the rotor (25-3) with ethanol using a
lint-free cloth.
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