Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 202 / 248

A-4 Safety Advisories
Mass spectrometer flammable solvents warning
This warning applies to instruments operated with flammable solvents.
Mass spectrometer shock hazard
This warning applies to all Waters mass spectrometers.
This warning applies to certain instruments when they are in Operate mode.
Warning:
Where significant quantities of flammable solvents are
involved, a continuous flow of nitrogen into the ion source is required to
prevent possible ignition in that enclosed space.
Ensure that the nitrogen supply pressure never falls below 690 kPa
(6.9 bar, 100 psi) during an analysis in which flammable solvents are
used. Also ensure a gas-fail connection is connected to the LC system so
that the LC solvent flow stops if the nitrogen supply fails.
Warning:
To avoid electric shock, do not remove the mass spectrometer’s
protective panels. The components they cover are not user-serviceable.
Warning:
High voltages can be present at certain external surfaces of
the mass spectrometer when the instrument is in Operate mode. To
avoid non lethal electric shock, make sure the instrument is in Standby
mode before touching areas marked with this high voltage warning
symbol.