The pump is shipped from the manufacturing site with the solvent lines installed between the components in the pump. To complete the setup, install the solvent lines between the pump inlet ports and the solvent reservoirs.

The flow path determines the pump inlet (component at which the solvent enters the pump) and the solvent flow through the pump.

Pump Type

Pump Inlet

Binary pump

The pump inlets are the solvent selectors.

Isocratic pump

The pump inlet is the pump head.

Quaternary pump,
dual pump

The pump inlet is the vacuum degasser.

For the pump-specific operating principles that illustrate the solvent flow through the pump, see Pump-Specific Information.

Parts and tools required

  • Solvent reservoir assemblies, including reservoir, reservoir cap, cap plugs, and retaining guide for the solvent line

  • Solvent lines

  • Solvent line filters

Optional to shut off the solvent flow through the system at the solvent reservoir

  • Shut-off valve, kit containing one shut-off valve and fitting connections

  • Tubing cutter

Preparations

  1. Assemble the solvent line filter.

  2. Rinse the solvent reservoirs thoroughly. Use a high-purity solvent for rinsing.

  3. On the pump inlet, remove the plug that protects the inlet during shipment, if applicable.

  4. For easier access to the lower degas chambers, remove the seal wash detector assembly (funnel and detector).

Assembling the Solvent Line Filter

Solvent line filter
Figure: Solvent line filter

No.

Description

1

Solvent line filter, filter holder bottom part

2

Filter frit

3

Solvent line filter, filter holder top part

  1. Assemble the solvent line filter, wearing appropriate clean gloves:

  1. Place the frit in a level position in the filter holder (bottom part).
  2. Screw the filter top to the filter bottom.

Removing the Seal Wash Detector Assembly

Grasp and pull the seal wash detector assembly (funnel and detector) upward by the funnel. The detector including the tubing and cable can remain connected to the funnel.

Removing the seal wash detector assembly
Figure: Removing the seal wash detector assembly

No.

Description

1

Funnel, seal wash detector

2

Seal wash detector

3

Detector cable

4

Seal wash line

Connecting the Solvent Lines

Connecting the solvent lines comprises the following steps:

  1. Routing the solvent lines to the solvent rack

  2. Connecting the solvent lines to the solvent reservoirs

  3. Optional: Installing shut-off valves in the solvent lines

TIP

To avoid the formation of air bubbles in liquid lines, always place reservoirs in the solvent rack on top of the system stack.

Routing the Solvent Lines to the Solvent Rack

  1. Connect each solvent line to the pump inlet port for which it is intended (see the labeling on the solvent lines and in the pump).

  1. Route the solvent lines from the pump to the solvent rack, through the tubing guides in the pump and all modules above the pump in the system stack. Observe the routing guidelines in Guiding Capillaries and Tubing Through the System.

  2. Route the solvent lines through the guide hole in the solvent rack and fix them in the appropriate tubing guides.

Guide hole and tubing guides in the solvent rack
Figure: Guide hole and tubing guides in the solvent rack

No.

Description

A

Guide hole (solvent rack)

1

Solvent lines (up to three solvent lines)

2

Solvent lines (up to three solvent lines)

3+4

Not to be used for solvent lines; reserved for other tubing

Connecting the Solvent Line to the Solvent Reservoir

Observe the guidelines and recommendations in Use of Solvents and Additives.

Preparing the solvent line and reservoir cap
Figure: Preparing the solvent line and reservoir cap

No.

Description

1

Solvent line

2

Retaining guide

3

Reservoir cap

4

Cap plugs

5

Solvent line filter

  1. Feed each solvent line through a retaining guide.

  2. Feed the solvent line through an open hole in a cap for a solvent reservoir. The retaining guide keeps the solvent line in place in the reservoir.

  3. Close any open holes in the reservoir caps with the cap plugs.

  4. Slide a solvent line filter holder onto each solvent line.

  1. Fill the solvent reservoirs with solvent.

  2. Tighten the reservoir cap hand-tight. Press the retaining guide into the hole in the reservoir cap so that the tubing is kept in place in the cap.

  3. Place the solvent reservoirs in the solvent rack.

  4. Position the solvent lines straight in the tubing guides.

  1. Optional: Install shut-off valves in the solvent lines (see Installing Solvent Shut-Off Valves).

  2. Check the solvent lines across the entire flow path. Make sure that the lines are not bent, pinched, or squeezed at any point in the flow path.

  3. Reinstall the seal wash detector assembly.