9 replacing the suppressor – Metrohm 790 Personal IC User Manual
Page 174
5.2 Maintenance and servicing
790 Personal IC
165
108
108
108
108
107
107
107
107
106
106
106
106
105
105
105
105
Fig. 20: Assembling the suppressor
105
105
105
105
Screw nut
107
107
107
107
Suppressor rotor (6.2832.000)
106
106
106
106
Connection piece (6.2832.010)
with input and output leads
108
108
108
108
Suppressor holder
5.2.9
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 suppres-
sor 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 Fig. 20):
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 105
105
105
105 from suppressor holder 108
108
108
108.
• Pull out connection piece 106
106
106
106 and suppressor rotor 107
107
107
107 from
suppressor holder 108
108
108
108 (the connection piece and the rotor
normally stick together).
• Loosen connection piece 106
106
106
106 from suppressor rotor 107
107
107
107.