Connecting The Solvent Reservoirs - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

• As a standard, filter holders with 10 µm stainless steel frits are provided in the
accessories kit of the Solvent Rack. Do not use these frits with the module. Replace the
stainless steel frits with the 10 µm PEEK frits from the accessories kit of the module.
Open the filter holder and remove the filter frit. When placing the new filter frit into the
bottom part, make sure that the frit is in a level position (avoid tilting the frit).
• Make sure that the tubing connecting the pump to the degasser is as short as possible and
locate the solvent reservoirs as close as possible to the pump. To avoid formation of air
bubbles in the reservoirs and reformation of air bubbles in the solvent, make sure that the
reservoirs are on the same level or higher as the pump. Therefore, stack the Solvent Rack
onto the module (→ Fig. 24).
• Before connecting the solvent supply lines, make sure that the connectors are free of
contaminants. Even minute particles can allow air to enter the degasser, and thus reduce
the degassing effectiveness.

4.3.2 Connecting the Solvent Reservoirs

4.3.2.1 NC Pump
The solvent supply lines are connected to the NC pump at the factory. Solvent lines for NC
pumps with a ProFlow flow meter are equipped with shut off valves.
Connect the solvent supply lines directly to the solvent reservoirs.
1. Feed the solvent supply line through the retaining guide, which holds the tubing in
place in the reservoir. Then, feed it into the open hole in the reservoir cap.
2. Verify that a 10 µm PEEK frit is installed in the filter holder. Replace the frit if
necessary. 10 µm PEEK frits are available in the accessories kit of the module.
3. Slide the filter holder with filter frit onto the end of the solvent supply line.
4. If required
Cut the tubing straight if necessary. The end of the solvent supply line should be cut
straight and not deformed. Use only the original solvent supply lines.
5. Place the entire unit in the reservoir.
6. Tighten the reservoir cap hand-tight. Press the retaining guide into the hole in the
reservoir cap to hold the solvent supply line in place inside the reservoir.
Retaining guide
Fig. 25: Connecting the solvent supply lines to the reservoirs
When replacing a solvent supply line, remove the frit first, then the retaining guide, and
then the solvent supply line.
Operating Instructions
UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Filter holder with
filter frit
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