Waters ACQUITY UPLC Operator's, Overview And Maintenance Manual page 47

Waters ACQUITY UPLC BEH Column Care and Use
See also:
Instructions or ACQUITY UPLC HSS Column Care and Use
Instructions.
Warning:
instrument controls the basic operational state of that instrument.
Nevertheless, some instrument circuits remain live after the
instrument is switched off. To completely interrupt power to a
system instrument, set the power switch to Off, and then unplug
the instrument's power cord from the AC outlet.
4. Power-off the system.
If you prefer to leave the system powered-on, turn off the
Alternative:
column heater or reduce the column heater temperature to 40 °C
(104 °F).
Caution:
shut down under the recommended conditions, ensure that the
new mobile phase and solvents are miscible with the
recommended storage solvents: water/methanol or
water/acetonitrile. If they are not directly miscible with the
recommended storage solvents, use an intermediate solvent that is
miscible with both the storage solvents and the new-analysis
solvents to flush the storage solvents from the system.
5. Cap the flow cell inlet and outlet ports.
Risk of electric shock. The power switch on each system
Before using any system or instruments that have been
Shutting down the detector 35