Perform the maintenance procedures in the table on a regular basis. The frequency given in the table is a suggestion. The optimum frequency for maintenance depends on several factors, such as the types and amounts of samples and solvents used with the device.

Frequency

What you should do...

Daily

  • Inspect the flow connections for signs of leakage or blockage.

  • Inspect the flow connections for indications of salt deposits.

  • Inspect the flow connections for indications of air bubbles. Degas the solvents and purge the pump if necessary.

  • If the solvent is pure water or an aqueous buffer, replace the solvent in the reservoir daily.

  • Check the liquid level in the seal wash reservoir. Fill the seal wash reservoir with fresh seal wash liquid if required.

  • When you use buffers or salt solutions, flush the device thoroughly after use with an appropriate solvent that does not contain buffers or salts.

Regularly

  • Check the liquid level in the solvent reservoirs to prevent the pump from running dry.

    Especially with phosphate buffer applications: The solvent reservoirs must not run empty while the pump is running. If they do, problems with check valves and/or proportioning valves might occur. When the system is not operated for more than 1 day, flush the system and solvent lines, including those that are not used for the application, with buffer-free solvent.

  • Replace the wash liquid in the seal wash reservoir with fresh liquid. Rinse the reservoir thoroughly before filling it. Use a high-purity solvent for rinsing.

  • Test the seal wash system for leakage (see Testing the Seal Wash System for Leakage).

  • Replace the peristaltic tubing in the seal wash pump every 6 months (see Replacing the Seal Wash Lines).

  • Inspect the flow connections for damage, such as cracks, nicks, cuts, or blockage.

  • When you use additives, inspect the pump for leakage once a month.

  • Test the permeability of the static mixer (see Testing the Static Mixer for Permeability).

  • To avoid contamination of the degasser, prepare fresh solvents, clean the solvent lines, and flush the degasser.

  • Check that all warning labels are still present on the device and clearly legible. If they are not, contact Thermo Fisher Scientific for replacement.

Annually

A maintenance kit is available for the pump, which includes all parts that are required for routine maintenance (see Consumables and Replacement Parts).

TIP

The Chromeleon software supports functions for estimating the lifetime of consumables (see Predictive Performance).