Metrohm 844 UV/VIS Compact IC - Manual (Page 66)

Table of contents
5 Check for leaks
• Check all the capillaries and their connections from the high-
pressure pump to the detector block for escaping liquid. If
eluent is escaping then the corresponding compression
fitting should be tightened or a new connection should be
made.
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).
• 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).