Use; Safety Instructions - MSA OptimAir 3000 Operating Manual

MSA
3.

Use

3.1.

Safety Instructions

Oxygen content and toxic material concentration
The type and concentration level of the toxic material in the ambient atmosphere
must be known.
The permitted minimum oxygen concentration of ambient air is governed by
national regulation. They have different values for minimum levels of oxygen and
this must be taken into account for safe use (typically in the range 17% to 19.5%).
Toxic gases without smell recognition
Filters used for toxic gases which do not have smell recognition on the clean air
side require special rules of use with reference to the time being used and the
use itself. If there is any doubt about the composition of the toxic gases, a
supplied air breathing apparatus must be used which is independent of the
ambient atmosphere (an isolating unit).
Filter selection
When using gas filters, ensure that no particle-type toxic substances are present,
and, when using particle filters, that there are no toxic gases present. If this is not
the case, combination filters must be used.
Working environment
A basic principle is that turbo filter devices must not be used in narrow or confined
spaces (containers, ducts, pits).
The OptimAir 3000 and 3000A must not be used if the surrounding atmosphere is
in danger of explosion.
The OptimAir 3000EX is designed for use in potentially explosive atmospheres.
When using turbo filter devices, naked flames and liquid metal droplets (e.g. at
welding works) must be kept away from the filter due to the hazard of ignition that
can lead to hazardous concentrations of toxic substances.
GB
OptimAir 3000, 3000A and 3000EX
USE
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