Precautions - Agilent Technologies 5977B Series Operating Manual

1 Introduction

Precautions

Take the following precautions when operating a a GC/MSD system or GC/MS
system with hydrogen carrier gas or when operating the MSD with the
JetClean option that supplies hydrogen to the MSD analyzer.
You must remove the plastic cover over the glass window on the front of a 5977B
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Series MSD. In the unlikely event of an explosion, this cover may dislodge.
You MUST make sure the top thumbscrew on the analyzer side plate is fastened
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finger-tight. Do not over tighten the thumbscrew; this can cause air leaks.
Failure to secure your MSD as described above greatly increases the chance of
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personal injury in the event of an explosion.
General laboratory precautions
• Avoid leaks in the carrier gas lines. Use leak-checking equipment to
• Eliminate as many ignition sources from your laboratory as possible (open
• Do not allow hydrogen from a high pressure cylinder to vent directly to
• Use a hydrogen generator instead of bottled hydrogen.
Operating precautions
• Turn off the hydrogen at its source every time you shut down the GC or
• Turn off the hydrogen at its source every time you vent the MSD. (Do not
• Turn off the hydrogen at its source every time shutoff valves in an MSD are
• Turn off the hydrogen at its source if a power failure occurs.
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periodically check for hydrogen leaks.
flames, devices that can spark, sources of static electricity, etc.).
atmosphere (danger of self-ignition).
MSD.
heat the capillary column without carrier gas flow.)
closed. (Do not heat the capillary column without carrier gas flow.)
5977B Series MSD Operating Manual
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