Transcript Document

3M Air-Mate™ High Efficiency
Powered Air Purifying Respirator
(PAPR)
3M Occupational Health and Environmental Safety Division
© 3M 2003
Air-Mate HEPA PAPR Components
Head Cover
Head Cover
Hood
Breathing
Tube
Blower /
Filtration Unit
(w/Airflow Indicator)
Battery
Charger
3M Occupational Health and Environmental Safety Division
© 3M 2003
Intended Use
• Motor blower draws contaminated air through a
high efficiency particle (HEPA) filter and blows
filtered air up into head covering
• When properly used, helps reduce respiratory
exposure to airborne particles such as dust, mist,
biological and radiological aerosols
• PAPR with head cover reduces exposure
by factor of 25, PAPR with hood
reduces exposure by factor of 1000
• HEPA filters do not reduce exposure to
gases or vapors
• Do not use in oxygen deficient
environments
3M Occupational Health and Environmental Safety Division
© 3M 2003
Before Use: Breathing Tube
• Inspect the breathing tube and
body of the blower / filtration
unit for punctures, cracks or
general wear.
• Insert the breathing tube (male
end with pin) into the blower /
filtration
unit
and
twist
clockwise to lock in place.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Before Use: Head Cover or Hood
• Inspect the head cover or hood for damage.
• Push the slotted end of the breathing tube
into the connector in the rear of the head
cover or hood until it snaps into place.
• Pull the head cover or hood over your head
and adjust it so the headband wraps around
your head.
• Pull the elasticized edge of the faceseal
under your chin.
• For the hood, tuck the inner shroud under
your protective clothing and allow the outer
shroud to hang outside your clothing.
Make sure that the power unit is on and air
is flowing before entering the isolation area
3M Occupational Health and Environmental Safety Division
© 3M 2003
Before Use: Battery Charging
• There are three battery chargers available:
520-03-73
Single Battery Charger
520-03-72
5 Unit Charger
3M Occupational Health and Environmental Safety Division
520-01-61
10 Unit Charger
© 3M 2003
Battery Charging (Cont.)
• Place the charger in a cool environment--less than 77°F
(25°C). At higher temperatures, the battery pack may not
accept a full charge.
• If a battery pack feels hot, let it cool for 1/2 hour before
charging.
• Do not charge multiple battery packs in a closed cabinet
without ventilation.
• Plug the power cord into a regulated 120V-60Hz outlet. The
green LED light will turn on.
Green LED light
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© 3M 2003
Battery Charging (Cont.)
• Insert the charging lead into the socket in the
side of the blower/filtration unit.
• The LED will turn off, indicating that the
battery pack attached is being charged in a
high rate mode. A completely exhausted
battery pack should be charged for about 8
hours.
LED turns off when
battery is charging.
• When the battery is finished charging, the LED will turn
back on. The charger will also switch to trickle rate mode,
preventing damage to the battery from overcharge.
• Batteries may be left on trickle mode to maintain optimum
capacity for up to 30 days, but best to disconnect after fully
charged.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Battery Charging (Cont.)
• Batteries provide up to 500 charge/discharge cycles when
not exposed to high heat for extended periods of time.
• Charge battery packs before they are completely discharged.
Damage may occur if the battery pack is completely
discharged ("deep discharged") frequently.
• A NiCad battery stored at room temperature loses
approximately 1% of its charge each day. Self-discharge
during storage will not damage the battery.
• Batteries subjected to prolonged storage (longer than 6
months) may lose their capacity to hold a full charge.
See also “Suggested Monthly Maintenance” slide
3M Occupational Health and Environmental Safety Division
© 3M 2003
Filter Replacement (HSE)
• The high efficiency filter must be changed when:
– The unit does not pass the air flow test with a
properly charged battery.
– If the filter has been physically damaged.
– According to local administrative procedures.
Note: In a relatively clean environment such as healthcare, it may
take a long time before the filter becomes clogged to the point of
significantly reducing airflow. Also, filtration efficiency may
increase as the filter becomes loaded. In their 1994 TB guidelines,
CDC stated that it would be unlikely for particles captured in a
filter to be reaerosolized. However, certain pathogens may be
transmitted via physical contact with the outside of the filter.
Therefore, filter replacement must also be in accordance with your
facility’s infection control practices.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Cleaning
•
•
•
•
•
Follow the industrial hygiene / infection control practices
established by your employer for the specific contaminants to
which you have been exposed.
Wipe the outside surfaces of the PAPR system with a mild
solution of warm water and mild detergent. Do not clean with
organic solvents. Do not soak the blower unit or battery in
cleaning solutions.
Wipe with a cloth dampened with clean warm water.
If necessary wipe with a cloth dampened with a hypo chlorite
solution (1 oz. [30ml] household bleach in 2 gallons [7.5 L]
of water).
Other methods of cleaning, disinfection or sterilization have
not been tested for compatibility with the PAPR, may
damage the PAPR system, and therefore must not be used.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Storage
• Store components in a cool dry area that is free
from contaminants and direct sunlight.
• Store in such a way as to protect the PAPR from
physical damage.
• Respirators assigned to an individual should be
marked as such or stored in a specific location.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Frequently Asked Questions
Q: Does the PAPR protect against inhalation of
biological agents?
A: Living organisms are filtered with the same
efficiency as non-living particles of the same
aerodynamic diameter.
Respirators only reduce exposure. They
do not eliminate exposure.
Since everyone has a different immune
system, we can not say that a respirator will
prevent disease. It only reduces exposure.
There are no recognized “safe levels” or
occupational exposure limits for biological
agents.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Frequently Asked Questions
Q: Are small particles such as viruses filtered?
A: Smaller isn’t necessarily more difficult to
filter. Filters are tested against particles that
are roughly the most difficult size to filter,
about 0.3 μm. The HEPA filter has filtration
efficiency greater than 99.97% against this
sized particle. Smaller or larger particles are
easier to filter. For example, below 0.1 μm,
diffusion becomes a very effective capture
mechanism. If viruses are aerosolized, they
are usually contained in a droplet so the
aerodynamic diameter is larger than the size
of the virus by itself.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Frequently Asked Questions
Q: Do I need to decontaminate the PAPR or
discard it after use?
A: It all depends on what it was exposed to.
CDC stated that m. Tuberculosis needs to be
aerosolized to contract TB. Therefore,
extraordinary cleaning of surfaces was not
deemed necessary. However, CDC stated
that surfaces directly contaminated during
care of a SARS patient should be cleaned
with a U.S. Environmental Protection
Agency (EPA)-registered disinfectant.
Check with your infection control regarding
the precautions required for the agent or
pathogen
in question.
3M Occupational
Health and Environmental
Safety Division
© 3M 2003
Frequently Asked Questions
Q: Why would I use a PAPR instead of a N95
filtering facepiece?
A: The N95 filtering facepiece will reduce
exposure by 75%,
The Head cover HEPA PAPR will reduce
exposure by 96%
The Hood (Shroud) HEPA PAPR will reduce
exposure by 99%
PAPRs with head covers and hoods do not
need to be fit tested. PAPRs are often more
comfortable as filtered air is blown up to the
hood or headcover and there is no increased
breathing resistance.
3M Occupational Health and Environmental Safety Division
© 3M 2003
Problem
Possible Causes
Smell or taste
contaminants,
irritation during use
Misuse, improper assembly, Leave work area immediately and
or malfunction of equipment contact supervisor. Do not use
PAPR until corrected.
Blower does not run
when switch
depressed
Battery is discharged
Faulty power switch
Faulty motor
Recharge or replace battery
Replace motor blower
Replace motor blower
Low airflow
Battery needs charging
Filter is loaded
PAPR blower malfunction
Breathing tube restricted.
Switch to fully charged battery
Replace filter
Switch to a different blower unit
Remove restriction
3M Occupational Health and Environmental Safety Division
Corrective Action
© 3M 2003
Heat and flame
resistance
Battery pack
Not designed for use in high
temperature environments or
exposure to sparks or flame.
Rechargeable nickel cadmium.
Up to 8 hrs of use per charge.
Greater than 6 scfm (170 lpm)
Approximately 2.4 lbs. (1.1 kg)
Airflow range
Weight of blower,
battery, belt and filter
Hood material
Tychem® QC, contains natural
rubber latex
Faceshield
Clear acetate
Sizing for Hoods and Regular – head sizes 6 1/2 to 7 3/8
Head Covers
Large – head sizes 7 to 8
3M Occupational Health and Environmental Safety Division
© 3M 2003