PerkinElmer aanalyst 200, User Manual

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AAnalyst 200 User’s Guide
3-17
CAUTION
Risk of damage to the instrument
Water in the air supply can cause damage to the pneumatics.
Use only dry air. Bleed compressor tanks to remove water at least once a week
Air compressors are generally uncomfortably noisy to have in the immediate vicinity of the
instrument. Whenever possible, locate them at some distance from the laboratory in an area
providing suitable ventilation.
Air cylinders
Cylinders of compressed air can also be used but are recommended only as an emergency or
short-term solution. A standard #1 size air cylinder will last only about five hours. It is common
to find other than 20% oxygen in air cylinders. This can cause erratic burner operation and non-
reproducible analytical results and, in extreme cases, may cause a potential safety hazard.
In general, if cylinder air is to be used, it is important to specify compressed air rather than
breathing air and that the oxygen content is less than 20%.
WARNING
Warning: Flashback Hazard
PerkinElmer burner systems are designed for use with compressed air. The use
of oxygen can cause an explosion in the burner system, and oxygen-enriched air
can cause a flashback of the flame.
Never use oxygen or oxygen-enriched air with PerkinElmer burner systems.
Use only compressed air
.
Nitrous oxide supply requirements
WARNING
Warning: Nitrous oxide is a strong oxidant and an asphyxiant
Nitrous oxide is an asphyxiant; it can be considered a potential hazard
whenever it is stored or used in a confined space.
Spontaneous combustion may occur if nitrous oxide comes into contact with
grease, oil, or other organic material.
•
Store nitrous oxide cylinders in a well-ventilated area outside the
laboratory.
•
Do not store nitrous oxide cylinders in close proximity to flammable gases
(e.g., acetylene).
•
Make sure tubing and fittings carrying nitrous oxide are free of grease, oil,
or other organic material.