PerkinElmer PINAACLE 900 Series, Customer Hardware And Service Manual

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Flame Gas Requirements
PinAAcle 900H and PinAAcle 900T systems require a minimum air pressure of
350 kPa (50-58 psig).
It is desirable to have a water and oil trap or filter between the compressor and the
instrument gas control system. The use of an Air Filter Accessory (Part No.
00470652) or an Air/Acetylene Filter Accessory (Part No. N9301398) is strongly
recommended to remove entrained water, oil, water aerosols and solid particles
from compressed air lines.
If there is any doubt regarding the usability of a central air supply (insufficient
volume or pressure or excessive oil or water contamination), the quality of the
supply should be checked prior to the arrival of the instrument. A small, oil-less air
compressor meeting the stated requirements is available from PerkinElmer (Part
No. 03030313 for 115 volts, 60 Hz or Part No. 03030314 for 230 volts, 50 Hz
service).
Air compressors are generally uncomfortably noisy to have in the immediate
vicinity of the instrument. Whenever possible, it is advisable to locate them at some
distance from laboratory workers in an area providing suitable ventilation.
Cylinders of compressed air can also be used but are recommended only as an
emergency or short-term solution for the following reasons:
• A standard #1 size air cylinder contains about 6200 liters (220 cubic feet)
of air at standard temperature and pressure (STP). A premix burner-
nebulizer system uses about 20 liters/min (0.7 cubic feet/min), and,
therefore, a cylinder will last only about five hours. Unless an instrument
is used only a few hours per day, changing cylinders becomes a nuisance
as well as being expensive.
• Occasionally, cylinder air may be obtained from a liquefaction process
during which the oxygen-to-nitrogen ratio can change. Therefore, it is not
uncommon 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 provide a potential safety hazard. In general, if
When using an air or air/acetylene accessory, never exceed 1050 kPa
(150 psig).
!
Warning