RESPIRATOR USE
PARTICULATE FILTER AND CHEMICAL CARTRIDGE
A
ND BATTERY PACK SERVICE TIMES
T
he PAPR high efficiency filter cartridges and the battery
pack are designed to supply a minimum of six cubic feet
per minute (cfm) of respirable air to the facepiece (or hood)
for a shift. Actual service time may vary. However, air flow
must not drop below 4 cfm for a facepiece or 6 cfm for
h
oods. The type and concentration of the contaminant, as
well as the relative humidity of the air, may affect how long
filters may be used. See the Accessories section for avail-
able flow check devices.
If the motor-blower changes speed quickly or varies as
you breathe, check the following:
1. If breathing resistance is still high after you have
installed new filters, then the NiCad Battery Pack must
be recharged or replaced with a Lithium Battery Pack.
See Battery Charging. With facepiece-equipped res-
pirators you can breathe through the respirator with
the motor-blower off. However, breathing resistance
will be greater than when the PAPR is supplying air to
the facepiece.
DO NOT use the PAPR hood model with the motor-
blower off. CO
2
can build up in the hood and cause
asphyxiation. If motor-blower stops, immediately
return to fresh air and remove hood.
CHEMICAL AND COMBINATION CARTRIDGE SERVICE
TIMES
For respirators with Chemical Cartridge:
• Users must follow an appropriate cartridge change-out
schedule developed by a qualified professional. The
change-out schedule must take into account all factors
that may influence respiratory protection including spe-
cific work practices and other conditions unique to the
work environment. Cartridges equipped with an End-
of-Service-Life Indicator for a specific contaminant pre-
sent must be replaced when the indicator changes to
the specified color or sooner if using the respirator
against a mixture and the cartridge change-out sched-
ule specifies an earlier replacement.
• If using the respirator against substances having poor
warning properties, over exposure can occur without
user awareness. Take appropriate precaution to pre-
vent over exposure, which may include an earlier car-
tridge change-out, or using an air-supplied respirator
to SCBA. For further information refer to MSA's
Response Respirator Selector.
•
Replace cartridges every shift, or sooner if indicated
by change-out schedule or End-of-Service-Life
I
ndicator. Use beyond one shift could result in shorter
than expected service time and over exposure due to
contaminant desorption and migration through the
cartridge when not in use.
F
or Respirators with Combination Cartridges (chemi-
cal cartridges with filters):
• The limitations specified above for chemical cartridges
as well as the applicable filter class apply for combi-
nation cartridges.
Applicable respirator use requirement as specified in the
OSHA Respiratory Protection Regulations 29 CFR Part
1910.134 (or other requirements established by the
Regulatory Agency with jurisdiction over the wearer).
Regulations may also apply for certain contaminations
(See MSA's Response Respirator Selector).
Return to a safe atmosphere and discard the respira-
tor immediately if the facepiece becomes discolored,
crazed, blistered, cracked, or if other signs of deterio-
ration of the facepiece or breathing tube are observed.
Failure to follow this warning can result in serious per-
sonal injury or death.
In Case of Emergency, or if any of the following conditions
exist, leave the area immediately:
• breathing becomes difficult
• dizziness or other distress occurs
• you taste or smell the contaminant
• you experience eye, nose or throat irritation.
REPLACING THE FILTER, CHEMICAL CARTRIDGES,
OR CS/CN CANISTERS, AND THE BATTERY PACK
Filters, chemical cartridges, and CS/CN canisters are
not designed to be cleaned and then reused. Do not
try to clean cartridges and canisters by hitting them
against hard surfaces or by blowing compressed air
through them. You could damage the inside of the car-
tridge or canister and eliminate respirator protection,
resulting serious respiratory injury or death.
15
TAL 804 (L) Rev. 17 - 490883
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