Electrostatic Discharge - Agilent Technologies 7250 Troubleshooting And Maintenance Manual

4 General Maintenance
When replacing pump oil, use appropriate chemical-resistant gloves and
WAR N IN G
safety glasses. Avoid all contact with the oil.
The optional dry scroll foreline pump may contain significant quantities of
WAR N IN G
dust. This dust can contain traces of the chemicals analyzed by the mass
spectrometer. Do NOT use compressed air to blow out this dust. Using
compressed air will contaminate your laboratory with potentially hazardous
dust.
Always perform any maintenance procedures using hazardous solvents under
WAR N IN G
a fume hood. Operate the MS in a well-ventilated room.

Electrostatic discharge

All of the printed circuit boards in the MS contain components that can be
damaged by electrostatic discharge (ESD). Do not handle or touch these boards
unless absolutely necessary. In addition, wires, contacts, and cables can conduct
ESD to the electronics boards to which they are connected. This is especially true
of the mass filter (quadrupole) contact wires, which can carry ESD to sensitive
components on the quadrupole board. ESD damage may not cause immediate
failure, but it will gradually degrade the performance and stability of your MS.
When you work on or near printed circuit boards, or when you work on
components with wires, contacts, or cables connected to printed circuit boards,
always use a grounded antistatic wrist strap and take other antistatic
precautions. The wrist strap should be connected to a known good earth ground.
If that is not possible, it should be connected to a conductive (metal) part of the
assembly being worked on, but not to electronic components, exposed wires or
traces, or pins on connectors.
Take extra precautions, such as a grounded antistatic mat, if you must work on
components or assemblies that have been removed from the MS. This includes
the analyzer.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual 71