9 replacing the suppressor, Replacing the suppressor, Ion 4.2.9 ) – Metrohm 861 Advanced Compact IC User Manual

Page 89: A strong increase in the baseline. if, Er 114, Pull out connection piece 112 and suppress, Tor 113, R holder 114, Ection piece 112 from suppress, Tion piece 112 to the high-pressure pump

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4.2 Maintenance and servicing

861 Advanced Compact IC / Instructions for Use 8.861.1033

79

111 Screw nut

112 Connection piece (6.2832.010)

with input and output leads

113 Suppressor rotor (6.2832.000)

114 Suppressor holder

115 Slot in the suppressor holder

8 Connect and condition the suppressor

Reconnect the suppressor to the IC system.

Before switching the suppressor to the next position for the

first time, rinse all 3 suppressor units with solution for 5 min.

4.2.9

Replacing the suppressor

The suppressor in the suppressor block may have to be replaced in the

following cases:

Irremediable loss of suppressor capacity (reduced phosphate

sensitivity and/or strong rise in baseline)

Irremediable blockage of the suppressor (the suppressor can no

longer deliver solutions)

Both the 6.2832.000 Suppressor rotor and the 6.2832.010 Connection

piece with the input and output leads can be replaced. To replace these

components proceed as follows (see Figure 22):

1 Disconnect suppressor from IC system

Disconnect all input and output leads of the suppressor from

IC system and peristaltic pump.

2 Dismantle suppressor

Unscrew nut 111 from suppressor holder 114.

Pull out connection piece 112 and suppressor rotor 113 from

suppressor holder 114 (the connection piece and the rotor

normally stick together). If this is not the case, take a sharp

object, insert it in slot 115 of the suppressor holder and use it

to pull out suppressor rotor 113).

Loosen connection piece 112 from suppressor rotor 113.

3 Clean suppressor rotor

Clean the sealing surface of new suppressor rotor 113

(6.2832.000) using a lint-free cloth and ethanol.

4 Insert suppressor rotor

Insert new suppressor rotor 113 in suppressor holder 114 in

such a way that the tubing connections at the rear of the rotor

fit in the corresponding openings inside the rotor and that

one of the three holes in the rotor can be seen from below in

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