Metrohm 861 Advanced Compact IC - Manual (Page 57)

2.10 Putting into operation
861 Advanced Compact IC / Instructions for Use 8.861.1033
47
Section 3.3.1), the 853 will start up. At the same time a chro-
matogram window opens in which the baseline is shown con-
tinuously.
4 Set contact pressure for pump tubings
• Press contact pressure lever 48 on both tubing cartridges 47
upwards until regeneration and rinsing solution just start to be
drawn in.
• Then press contact pressure lever 48 upward by 1 more click
in order to achieve an optimal contact pressure.
5 Check for leaks
• Check all capillaries and their connections between the high-
pressure pump and the detector block and between the peri-
staltic pump and the suppressor module «MSM II» for escap-
ing liquid. If eluent escapes anywhere then the appropriate
compression fitting must be tightened further or changed.
6 Condition system
• Rinse the system with eluent until the desired stability of the
baseline is reached (normally 30 … 60 min; if the eluent is
changed, the establishment of the ion exchanger equilibrium
on the separating column can take longer). During that time,
step the suppressor at least 3 times (approx. every 10...20
minutes), so that after this time the suppressor module is suf-
ficiently conditioned too.
• The instrument is now ready for sample determinations using
the selected system.
Pump tubings are consumable material with a lifetime which depends
on the contact pressure. This is why the tubing cartridges should be
raised completely by loosening snap-action lever on the right-hand si-
de if the pump is to remain switched off for a considerable length of
time (the set contact pressure remains unchanged).