Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 19

1 Introduction
Precautions to take to prevent an explosion
The use of hydrogen gas is specifically prohibited with this product.
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You MUST make sure the top thumbscrew on the analyzer side plate is fastened
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finger-tight. Do not overtighten the thumbscrews; this can cause air leaks.
You MUST leave the collision cell chamber top plate shipping brackets
fastened. Do not remove the shipping brackets from the top plate for normal
operation; they secure the top plate in the event of an explosion.
Failure to secure your MS as described above greatly increases the chance of
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personal injury in the event of an explosion.
Many parts are dangerously hot
Many parts of the GC/MS operate at temperatures high enough to cause serious
burns. These parts include, but are not limited to the:
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Always cool these areas of the system to room temperature before working on
them. They will cool faster if you first set the temperature of the heated zone to
room temperature. Turn the zone off after it has reached the setpoint. If you
must perform maintenance on hot parts, use a wrench and wear gloves.
Whenever possible, cool the part of the instrument that you will be maintaining
before you begin working on it.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
Inlet
Oven and its contents
Valve box
Column nuts attaching the column to an inlet, detector, or GC/MS interface
Foreline pump
GC/MS interface
Quadrupole
Ion source
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