Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 122 / 296

7 • Maintenance and Service
Page 122 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
7.4 Routine and Preventive Maintenance
Optimum device performance, maximum uptime of the device, and
accurate results can be obtained only if the device is in good condition
and properly maintained.
7.4.1 Internal Maintenance
Every six weeks, the pump automatically performs an internal
maintenance procedure when you initiate a purge cycle. The purge cycle
starts automatically when internal maintenance is complete. This may
take some seconds. While internal maintenance is running, the purge
valve must remain open.
If no purge cycle is initiated after another 6 weeks, a message appears in
the Chromeleon Audit Trail, reminding you to start a purge cycle.
7.4.2 Maintenance Plan
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 on a daily basis.
• 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.