Agilent Technologies 7000 Triple Quadrupole GC/MS, Maintenance Manual

Page: 19 / 214

Introduction
1
Troubleshooting and Maintenance Manual 19
•
Turn off the hydrogen at its source every time you vent the MS (do not heat
the capillary column without carrier gas flow).
• Turn off the hydrogen at its source every time shutoff valves in the MS are
closed (do not heat the capillary column without carrier gas flow).
• Turn off the hydrogen at its source if a power failure occurs.
•
If a power failure occurs while the GC/MS system is unattended, even if the
system has restarted by itself:
1
Immediately turn off the hydrogen at its source.
2 Turn off the GC.
3
Turn off the MS and allow it to cool for 1 hour.
4
Eliminate all potential sources of ignition in the room.
5 Open the vacuum manifold of the MS to atmosphere.
6
Wait at least 10 minutes to allow any hydrogen to dissipate.
7
Start up the GC and MS as normal.
When using hydrogen gas
,
check the system for leaks to prevent possible fire
and explosion hazards based on local Environmental Health and Safety (EHS)
requirements. Always check for leaks after changing a tank or servicing the
gas lines. Always make sure the vent line is vented into a fume hood.