Metrohm 874 - Figure 5 Mounting the Needles

3.4 Mounting needles
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874 Oven Sample Processor
Mounting the piercing and exhaust air needle
6.2816.080
6.2049.040/6.2049.050
6.2816.070
1
2
3
Figure 5 Mounting the needles
Mount the needles as follows:
1
Screw the needle holder (6.2049.040 or 6.2049.050) into the distri-
butor on the guide head.
2
Screw the 6.2816.080 outlet needle onto the Luer connector of
the needle holder.
3
Carefully guide the 6.2816.070 needle for gas inlet into the
opening of the distributor from above and allow it to drop down.
NOTICE
Ensure that the white PTFE seal sits firmly on the needle.
4
Screw the 6.1805.470 FEP tubing onto the opening of the distri-
butor by hand. Screw the other end of the tube into the opening of
the gas outlet on the upper side of the tower.