Metrohm 828 IC Dual Suppressor - Manual (Page 43)

5.5 Unplanned maintenance work
828 IC Dual Suppressor/ 8.828.1003 Instructions for Use
35
4. Pump ultrapure water at 1 mL/min through the system with the
suppressor switched on (mains switch 16 = ON).
When LED "Voltage" 3 lights up green continue for a further 30
min; the suppressor is then regenerated.
If LED "Voltage" 3 turns red again then repeat rinsing step 3.
and continue with 4. If the LED "Voltage" 3 still remains red
then regeneration procedure 2. - 4. must be repeated.
If the suppressor cannot be regenerated then the suppressor
cell must be replaced.
5.5.2 Replacing the suppressor cell
If the suppressor cell can no longer be regenerated then it must be
replaced.
As replacing the suppressor cell requires the instrument to be
opened, this should only be carried out by experienced users. Please
observe the safety information given in Section 1.5.1.
If the 828 IC Dual Suppressor is connected to the mains supply then it
must neither be opened nor should any parts be removed from it, as
otherwise the risk of contact with current-carrying assemblies exists.
This is why the instrument should be separated from all voltage
sources before being opened. Please make sure that the mains
cable is pulled out from mains connector 16!
Required tools:
1 Phillips screwdriver
1 Pliers
1 Preparation
• Switch off the 828 IC Dual Suppressor at mains switch 16.
• Remove the mains cable from connection 16.