Metrohm 863 Compact Autosampler - Manual (Page 24)

3.4 Setting up the needle holder ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
14 ￭￭￭￭￭￭￭￭ 863 Compact Autosampler
2 Remove the nut
Loosen and remove the nut screwed onto the needle holder.
3 Insert the needle holder
Insert the needle holder in the lift head and screw it tight with the
nut from below.
4 Insert the needle
￭ Loosen the pressure screw from the needle holder and remove it.
￭ Insert the needle part way from above into the opening of the
needle holder.
￭ Slide the PEEK ring wedge down over the needle from above. The
narrow side of the seal must face upwards.
5 Fasten the needle
￭ Screw the pressure screw into the needle holder from above. At
the same time push the needle slightly upward from below to
apply a little pressure.
￭ Tighten the pressure screw firmly.
6 Connect the capillary
￭ Slide a 6.2744.010 PEEK pressure screw over the end of the capil-
lary.
￭ Manually screw tight the PEEK pressure screw with the capillary in
the pressure screw resting on the needle holder. The capillary
must be pressed tight while doing so.
7 Close the safety shield
Tip down the safety shield and fix it with the fastening screws.
Warning
The safety shield must always be closed for safety reasons during oper-
ation of the 863 Compact Autosampler.