Agilent Technologies 5975T LTM GC/MSD, Руководство по устранению неисправностей и техническому обслуживанию

Страница: 22 / 270

22 Troubleshooting and Maintenance Guide
1
Introduction
• Eliminate from your laboratory as many ignition sources as
possible (open flames, devices that can spark, sources of
static electricity, etc.).
• Do not allow hydrogen from a high pressure cylinder to vent
directly to atmosphere (danger of self-ignition).
• Use a hydrogen generator instead of bottled hydrogen.
Operating precautions
• Turn off the hydrogen at its source every time you shut
down the instrument.
• Turn off the hydrogen at its source every time you vent the
MSD (do not heat the capillary column without carrier gas
flow).
• Turn off the hydrogen at its source every time shutoff valves
in an MSD 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/MSD system is
unattended, even if the system has restarted by itself:
1
Immediately turn off the hydrogen at its source.
2
Turn off the instrument and allow it to cool for 1 hour.
3
Eliminate all potential sources of ignition in the room.
4
Open the vacuum manifold to atmosphere.
5
Wait at least 10 minutes to allow any hydrogen to
dissipate.
6 Start up the instrument 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.