Waters ACQUITY UPLC Overview And Maintenance Manual page 62

• Needle-seal readiness test, which confirms that there is a rise in pressure when flow is
directed through the needle, the needle seal, and the static return tubing. It indirectly confirms
that there is no drop in system pressure when it registers a positive rise in pressure.
• Sample syringe leak test, which verifies that the sample syringe, metering syringe valve,
sample transducer, and inject valve are free of leaks. This test also verifies that the sample
syringe is properly primed and that no bubbles are present.
The Maintain menu also lists these functions:
• Characterizing the needle seal, which determines the seal location.
• Replace components, which enables you to replace the sample syringe, needle, and needle
seal.
• Calibrating the needle Z axis, which calibrates the vertical position of the needle.
• Disabling motors, which you do before manually moving the sample tray and R-carriage.
• Parking the sample needle and injection valve, which you do before storing the system or
replacing a needle or valve.
See also:
• Quaternary Solvent Manager Overview and Maintenance Guide or ACQUITY UPLC Binary
Solvent Manager Operator's Overview and Maintenance Information for information on the
solvent manager's leak test.
• The console online Help for additional information about running diagnostic tests.
June 11, 2019, 715005051 Rev. D
Page 62