Metrohm 753 Suppressor Module - Manual (Page 15)

2 Installation
753 Suppressor Module / 8.753.1003 Instructions for Use
12
7 Attach pump tubings
• Loosen both tubing cartridges 44 from the holding clamp 99 by
pressing down snap-action lever 10 10 and remove from
mounting pin 12 12 on the 753 Suppressor Module (see Fig. 1).
• Press contact pressure lever 55 on both tubing cartridges
down as far as it will go.
• Insert a length of pump tubing 33 33 (6.1826.050) into each of
the tubing cartridges as shown in Fig. 7. The white-yellow
stopper 34 34 must click into the corresponding holder on the
left-hand side of the tubing cartridge.
• Place the tubing cartridges on mounting pin 12 12 and press
down on the right-hand side until snap-action lever 10 10 clicks
into position on holding clamp 99. Take care that no kinks are
formed in the pump tubing.
8 Suppressor connection 2: H
2
SO
4
• Pull the inlet capillary 25 25 marked with “H
2
SO
4
“ at suppressor
connection 22 22 (see Fig. 6) through one of the rear panel
openings 29 29 of the 690 Ion Chromatograph or through the
door gap in the right-hand lower corner of the interior door
13 13.
• Mount a PEEK compression fitting 31 31 (6.2744.010) on the
end of inlet capillary 25 25 and screw this on to coupling 32 32
(6.2744.030) (see Fig. 7).
• Push coupling 32 32 on to the outlet end of the first pump tubing
33 33 (see Fig. 7).
• Mount suction tubing: cut a piece of PTFE Tubing 30 30
(6.1803.020) to the desired length.
• Mount a PEEK compression fitting 31 31 (6.2744.010) on one
end of PTFE tubing 30 30 and screw this on to coupling 32 32 (see
Fig. 7).
• Push coupling 32 32 on to the inlet end of the first pump tubing
33 33 (see Fig. 7).
• Immerse the other end of the suction tubing in a vessel
containing regeneration solution (normally 20 mmol/L H
2
SO
4
)
and fix in place.
• Pull outlet capillary 26 26 marked with "Waste" at suppressor
connection 22 22 (see Fig. 6) through one of the rear panel
openings 29 29 of the 690 Ion Chromatograph.
• Lead outlet capillary 26 26 to a sufficiently large waste container
and fix in place.