1Introduction
Many parts are dangerously hot
20 7000/7010 Series TQ GC/MS Operating Manual
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:
• Inlet
• Oven and its contents
• Valve box
• Detectors
• Column nuts attaching the column to an inlet or detector
• Foreline pump
• GC/MS transfer line
• Quadrupole
• Ion source
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.
The oil pan under the rotary vane foreline pump can be
a fire hazard
Oily rags, paper towels, and similar absorbents in the oil pan could ignite and
damage the pump and other parts of the MS.
Be careful when working behind the instrument. During cool-down cycles, the
GC emits hot exhaust that can cause burns.
The insulation around the inlets, detectors, valve box, and the insulation cups
is made of refractory ceramic fibers. To avoid inhaling fiber particles, we
recommend the following safety procedures: ventilate your work area; wear
long sleeves, gloves, safety glasses, and a disposable dust/mist respirator;
dispose of insulation in a sealed plastic bag in accordance with local
regulations; wash your hands with mild soap and cold water after handling the
insulation.
Combustible materials (or flammable/nonflammable wicking material) placed
under, over, or around the foreline (roughing) pump constitute a fire hazard. Keep
the pan clean, but do not leave absorbent material such as paper towels in it.
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