6. Users must wear suitable protective clothing and precautions must be taken so that the respirator is not exposed to
atmospheres that may be harmful.
7. Take into account the following factors which may affect the duration or the service life.
a. the degree of physical activity of the user;
b. the physical condition of the user;
c. the degree that the user's breathing rate is increased by excitement, fear, or other emotional factors;
d. the degree of training or experience which the user has had with this or similar equipment;
e. whether or not the cylinder is fully charged;
f. the presence in the compressed air of carbon dioxide concentrations greater than the .04% level normally found in
atmospheric air;
g. the atmospheric pressure; if used in a pressurized tunnel or caisson at 2 atmospheres (15 psig gauge) the duration
will be one-half as long as when used at 1 atmosphere; at 3 atmospheres the duration will be one-third as long;
h. the condition of the apparatus.
8. DO NOT modify this respirator.
Failure to follow these warnings can result in serious personal injury or death.
WARNING!
Particles and contaminants can enter a suppliedair respirator system when air supply hoses are dis connected and/or
reconnected in a contaminated atmosphere. This could result in serious injury or death depending on the toxicity of the
contaminant involved. It is the responsibility of the user to deter mine the potential risk and to take the necessary pre cautions
which may include a requirement that NO disconnection or reconnection of air-supply hoses be permitted in a contaminated
atmosphere. If in doubt DO NOT disconnect and/or reconnect.
Failure to follow this warning can result in serious personal injury or death.
1.3
Respirator Use Limitations Duo-Flo™ Mode
Maximum Use Concentration - Duo-Flo Mode
Do not exceed ANY of the applicable maximum use concentrations listed in
Table 1 Maximum Use Concentrations
Mixtures of Contaminants -
NIOSH allows this respirator to be used for protection against a mixture of contaminants that are present simultaneously or
used alternately against one contaminant then another (using the same filters) if the mixture meets the following conditions:
a. The filter must be approved for all contaminants present.
b. Contaminants present simultaneously must be below IDLH levels for the specific contaminants. If any one
contaminant in the mixture exceeds the IDLH concentration then the entire mixture must be treated as IDLH and
the respirator cannot be used (except for escape from particulates with appropriate filter).
7
Abrasi-Blast Respirator
US
1 Introduction
