Safety Precautions
ix
Dangers Associated with GCMS-QP2010 Series,
GCMS-QP2020, GCMS-TQ Series during
Operation
The following dangers could occur when operating the GCMS-QP2010 Series, GCMS-
QP2020, GCMS-TQ Series using a hydrogen carrier gas.
• If hydrogen gas accumulates in the GC oven, it could potentially ignite.
• If hydrogen gas accumulates inside the MS, it could potentially ignite.
• If hydrogen gas leaks from tubing, it could potentially ignite.
• If hydrogen gas is released from the GCMS-QP2010 Series, GCMS-QP2020,
GCMS-TQ Series into the room where it is installed and accumulates, it could
potentially ignite.
• If hydrogen gas gushes out of the high-pressure gas cylinder, sudden expansion of
the gas could potentially cause it to ignite.
GCMS-QP2010 Series, GCMS-QP2020, GCMS-
TQ Series Operation Procedures when Using
Hydrogen Gas
Procedures for operating the GCMS-QP2010 Series, GCMS-QP2020, GCMS-TQ
Series when using hydrogen gas are described below.
1 Before starting up the instrument, check that carrier gas is being supplied to
the GC.
2 Check that there are no leaks in the tubing system.
3 Close the front door of the MS, and tighten the knob on the front door.
4 Perform Auto Startup of the instrument according to "Instrument Startup and
Shutdown" in the GCMS-QP2010 Series, GCMS-QP2020, GCMS-TQ
Series User's Guide.
At this time, remove the checkmark (turn OFF) from "Vacuum Restart Mode".
5 Once the GCMS-QP2010 Series, GCMS-QP2020, GCMS-TQ Series
vacuum pump starts running, completely loosen the knob on the front door.
When the vacuum condition is in force, the door will not open due to the pressure difference
even if the knob remains loosened.
^ "Accumulation of Hydrogen Gas Inside the MS" P.xi
^ "Accumulation of Hydrogen Gas Inside the MS" P.xi
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