Metrohm Variocell for Bioscan – 6.5331.1X0 - Manual (Page 15)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4 Maintenance - Taking out of operation
IC Equipment set Variocell for Bioscan ￭￭￭￭￭￭￭￭ 9
4 Maintenance - Taking out of operation
In principle, the Variocell is maintenance-free.
Contamination appearing after prolonged utilization could however influ-
ence the measuring result. If the measuring signal should exhibit excessive
noise, then you can quite easily remove the Variocell and clean it. To do
so, proceed in accordance with the following instructions:
4.1 Maintaining the Variocell
Caution
The Variocell may not be unscrewed as long as the working electrode is
still mounted.
The spacer could become damaged.
Proceed as follows to dismantle the Variocell:
Dismantling the Variocell
1 In the software, switch off the Variocell and the high pressure pump.
2 Dismantle all three electrode cables.
3 Remove the Variocell from its holder in the instrument.
4 Unscrew the eluent inlet and eluent outlet.
5 ￭ Unscrew the fastening ring (1-11) on the working electrode
holder and remove it.
￭ Carefully pull the working electrode holder (1-10) out of the
Variocell.
6 Only now, unscrew the two pieces of the variocell.