Description - MSA AirHawk II Manual De Instrucciones

DESCRIPTION

The air masks from MSA are pressure-demand, self-
contained breathing apparatus (air mask) certified by the
National Institute for Occupational Safety and Health
(NIOSH) for use in atmospheres immediately dangerous to
life or health:
``Immediately dangerous to life or health'' means
conditions that pose an immediate threat to life or health
or conditions that pose an immediate threat of severe
exposure to contaminants, such as radioactive materials,
which are likely to have adverse cumulative or delayed
effects on health'' [Title 42 CFR, Part 84.2, (Q)]
•
This air mask is not compliant with National Fire
Protection Association (NFPA) Standard 1981. The
air mask should not be used for firefighting
applications where NFPA compliance is required.
•
This air mask is not NIOSH approved for use
against CBRN live agents. If NIOSH CBRN Agent
Approval is required, use a NIOSH CBRN Agent
approved FireHawk ®
•
This air mask must be equipped with an Ultra Elite
Hycar Facepiece (model numbers 7-935-7. 7-935-8,
and 7-935-9) and a CBRN regulator (model
numbers 10060982 or 10060983) when exposure to
CBRN live agents is possible. DO NOT use a
silicone facepiece or a regulator that is not
identified as CBRN regulator against CBRN live
agents.
Failure to follow these warnings can result in serious
personal injury or death.
The AirHawk II Air Mask consists of the following major
sub-assemblies.
•
first stage regulator
•
second stage regulator
•
air cylinder and valve
•
Audi-Larm™ Audible Alarm
•
carrier and harness
•
facepiece
FIRST STAGE REGULATOR
The first stage regulator is a pressure reducer that keeps
the pressure to the mask mounted regulator at
approximately 80 to 100 psig throughout the entire
operating pressure range of the cylinder. The regulator has
a redundancy feature to minimize the possibility of a first
stage failure. The regulator uses a large sintered filter
which is easy to replace. The filter captures particulates
that may be in the air stream.
TAL 1211 (L) Rev. 4 - 10088650
DESCRIPTION
Air Mask.
SECOND STAGE REGULATOR
This is a pressure-demand regulator, which keeps a
positive pressure in the facepiece all the time. The release
button on top of the regulator stops air flow. To stop
airflow, push the button in. To restart the regulator, inhale
sharply. The regulator attaches to the facepiece with a
Push-To-Connect connector or slide connector. The
regulator delivers large flow rates accurately and quickly.
AirHawk II Air Mask with the FireHawk
numbers 10060982 and 10060983) are considered by
MSA to be "CBRN hardened." They can be identified by
Firehawk Regulator model number and the CBRN marking
on the underside of the regulator housing. Air mask with
these regulator models have passed CBRN live agent
testing, but are not CBRN-approved by NIOSH since they
are not certified as NFPA compliant.
AIR CYLINDER AND VALVE
Capacity
Cubic Ft.
®
45
45
66
88
*as approved by NIOSH
The air cylinder and valve consists of a tank and a
cylinder valve assembly. The cylinder valve includes a
valve body, cylinder valve inlet tube, handwheel, safety
disc (burst disc), and pressure gauge. The pressure gauge
shows the air pressure in the cylinder continuously. The
gauge is calibrated in 100 psig increments. For example,
a gauge reading of 20 is read as 20 x 100 or 2,000 psig. A
handwheel is used to open and close the cylinder valve.
AUDI-LARM AUDIBLE ALARM
The audible alarm sounds when there is approximately
25% of the air mask's rated service time remaining. The
alarm also sounds when the cylinder valve is first opened,
providing an audible indication that the alarm is
functioning.
Cylinder
30-min. 2216 psig
30-min. 4500 psig
45-min. 4500 psig
60-min. 4500 psig
4
® MMR (model
Pressure Rated Svc*
psig Life (Min.)
2216 30
4500 30
4500 45
4500 60
Approx. Remaining
Service Time
7 min.
7 min.
11 min.
14 min.