Agilent Technologies 7890A GC Safety Manual page 5

Do not use an Uninterruptable Power Supply (UPS) with a GC
If the area where the GC is located suddenly looses power, an unsafe condition
can result if the GC remains powered on. Do not use the GC with a UPS.
Electrostatic discharge is a threat to GC electronics
The printed circuit (PC) boards in the GC can be damaged by electrostatic
discharge. Do not touch any of the boards unless it is absolutely necessary. If
you must handle them, wear a grounded wrist strap and take other antistatic
precautions. Wear a grounded wrist strap any time you must remove the GC
right side cover.
Many parts are dangerously hot
Many parts of the GC operate at temperatures high enough to cause serious
burns. These parts include but are not limited to:
• The inlets
• The oven and its contents
• The detectors
• The column nuts attaching the column to an inlet or detector
• The valve box
You should always cool these areas of the GC 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 thermally protective gloves. Whenever possible, cool the part of the
instrument that you will be maintaining before you begin working on it.
Be careful when working behind the instrument. During cool-down cycles, the GC
WA RN ING
emits hot exhaust which can cause burns.
7890A GC Safety Manual 5