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Safety Practices and Hazards
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.
Compressed gases and cylinders
All compressed gases (other than air) can create a hazard if they leak into the
atmosphere. Even small leaks in gas supply systems can be dangerous. Any leak
(except that of air) can create an explosion hazard, a fire hazard, or result in an
oxygen–deficient atmosphere. Such hazards can cause death, serious injury,
asphyxiation, anesthetic effects, and serious damage to equipment and property.
Cylinders must be stored and handled strictly in accordance with local safety
codes and regulations. Cylinders must be used and stored only in a vertical
position. Secure all cylinders to an immovable structure or a properly constructed
cylinder stand. The area in which cylinders are stored must be adequately
ventilated to prevent toxic or explosive accumulations. Move cylinders only on a
properly constructed trolley. Never locate gas cylinders near a source of ignition or
in a position that is subject to direct heat.
Keep cylinders cool. This rule applies to every cylinder of compressed gas.
Cylinders have pressure relief devices that release the contents of the cylinder if
the temperature exceeds 52 °C (125 °F).
Ensure that all cylinders are clearly labeled so that there can be no doubt about the
contents. If the cylinder label is not legible, do not use the cylinder—return it to your
supplier. Always ensure that you have the right cylinder before connecting the
cylinder to the instrument.
If air is supplied from a compressor, all moisture must be extracted from the air
before it is supplied to the gas control module. Moisture can affect the internal
components of the gas control system and create a potentially hazardous
situation.
Use only approved regulators and hose connectors.
Never attempt to refill cylinders.
10
Agilent 240/280 Series AA (including Zeeman)
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Troubleshooting
