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Safety Practices and Hazards
Do not connect the instrument to the mains power supply until you
have made sure that the operating voltage is correctly set for the
mains power supply in the specific outlet in your laboratory to which
the equipment is connected.
Heat, Vapors and Fumes
Heat, vapors and fumes generated by flame, furnace and vapor
generation methods can be hazardous to personnel.
Heat, vapors and fumes must be extracted from the instrument by an
exhaust system. The instrument must be vented into a self-contained
arrangement of collector hood, ducting and exhaust fan. The system
must be vented to the outside air, never within the building. Locate
the system outlet such that the exhaust cannot re-enter the building
through any door, window, air conditioning inlet, or other ventilator.
Construct the system in accordance with local codes and regulations
for ventilation.
The exhaust system must be capable of providing an exhaust
ventilation rate of at least 6 cubic meters per minute (200 cfm).
Locate the exhaust fan at least 3 meters (10 feet) away from the
flame and as close to the outlet as possible. The motor must be
mounted away from the hot gases, and plastic parts must not be used
as they will melt. Fit a back-draft damper to the outlet end of the
system. Equip the exhaust fan power supply with an indicator close
to the instrument to indicate whether the exhaust fan is on or off.
Always switch the exhaust fan on before lighting the flame.
Use fireproof ducting that is in accordance with your local fire
prevention regulations. Locate the ducting away from fire alarms,
sprinkler heads and other heat-sensitive devices. Do not make solder
joints in the ducting—the hot exhaust in the duct may melt the joint.
Regularly check the system by smoke test to ensure that the exhaust
system is working.
When operating the atomic absorption spectrometer, always have the
chimney in place to ensure correct ventilation.
Agilent 240/280 Series AA User's Guide
9
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