Agilent Technologies 5800 ICP-OES, User Manual

Page: 17 / 66

Introduction
Agilent 5800 and 5900 ICP-OES User's Guide 17
Exhaust System
The plasma operates at extremely high temperatures. The ICP-OES instrument
exhaust fumes can be noxious or corrosive.
The exhaust system should be checked regularly to ensure adequate flow. Consult
the ICP-OES Site Prep Guide for the appropriate flow rates.
WARNING
Hot Surface
The external vent may become hot during ICP-OES instrument operation
and remain hot for some time after the instrument has been switched off.
Allow the external vent to cool for at least five minutes before attempting
to remove the exhaust hose. Use heat-resistant gloves.
ICP-OES Instrument Cooling Air Supply
The ICP-OES instrument requires clean, dry, non-corrosive air for cooling purposes .
This is supplied to the instrument through an air supply vent located at the top, left
of the instrument. The vent has a dust filter, to filter out particulate matter.
The air supply is used to cool the internal mechanical and electronic components
of the instrument. Several of these assemblies contain parts prone to corrosion.
The introduction of cooling air contaminated with high levels of acid vapors or
other corrosive substances may cause damage to the instrument.
Due to the corrosive nature of some analytical work, it is recommended that in
applications demanding high usage of corrosive materials, an external cooling air
supply system is provided. It is
required that the cooling air be supplied from an
environmentally-controlled area that is away from the instrument exhaust and any
other area where corrosive materials are stored or used. Do not duct humid, warm
air into an instrument in a cooled laboratory environment.
The cooling air system with flue, fan, ducting and supply cowl, must provide
positive air pressure at the instrument inlet of 4 m
3 /min (141 ft 3 /min) when using
the External Inlet Duct Adaptor Kit. The ducting should be corrosion-resistant and
fire-proof.