Thermo Scientific Vanquish VF-D20 Operating Manual page 113

Vanquish Charged Aerosol Detectors Operating Manual
♦ Detector shall be transported or shipped after shutdown
♦
If no buffer solution is used, flush the system with
isopropanol.
♦
If a buffer solution is used, flush the system first with several
volumes (for example, 1.0 mL/min for 10 minutes with the
standard system) of methanol and water (50:50) to prevent
salt buildup in the fluidics. If the solvents in the detector are
not miscible with water, use an appropriate intermediate
solvent. Afterward, flush the system with isopropanol.
TIP As an intermediate solvent, you can use 100% methanol to flush
the charged aerosol detector.
2. Turn off the pump flow and then the gas flow:
a) Turn off the pump flow to the detector. Wait at least 5 minutes.
During the waiting period, the detector drains any remaining
mobile phase to waste.
b) Turn off the gas flow on the detector.
c) Wait until the system pressure is down to zero before you
continue.
d) Turn off the gas supply to the detector.
3. The step depends as follows:
♦ Detector and all other system modules remain in the system
stack and are to be turned off
Turn off the system with the system power button on the
system base.
♦ Detector shall be transported or shipped after shutdown
If one of the modules shall be removed from the system stack,
turn off all system modules with their main power switch.
Pressing the system power button will not be sufficient to turn
off the power to the devices completely.
Follow the instructions in
the Detector, page
section 7.12 Transporting or Shipping
142.
6 • Operation
Page 113