Transcript PAPR Training

Bullard PA20 Powered Air Purifying
Respirator (PAPR) Training Material
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PA20 Principle of Operation
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A PA20 Powered Air Purifying
Respirator System consists of
four components (Figure 1):
• Hood (1)
• Breathing Tube (2)
• Blower Unit (3)
• High Efficiency Particulate
(HEPA) Filter (Internal, Not
Shown)
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Figure 1
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Proper Use & Warnings
• Know the work environment and the potential hazards that could exist.
• Leave area immediately if:
- Breathing becomes difficult
- Unit becomes damaged
- Dizziness or other distress occurs
- Battery alarm sounds
• This apparatus must not be worn with the blower unit switched off. If the
blower is switched off, a rapid build-up of carbon dioxide and depletion of
oxygen may occur, which could result in death or serious injury.
• Never alter or modify this respirator. Use only NIOSH approved PA20
components and replacement parts for this respirator.
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Assembly
• Attach Breathing Tube to Blower Unit,
ensuring gray seal is in place (Figure
2).
• Ensure that filter assembly is installed
into blower unit housing.
• Hoods have a sewn-in breathing tube
connector on the back. The breathing
tube has a special connector on the
hood end with bayonet type pins.
• Insert the bayonet connector of the
breathing tube into the hood connector
and turn clockwise until it locks into
place (Figure 3).
• Remove tissue from hood lens.
Figure 2
Figure 3
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Donning / Doffing
Donning / doffing should take place in a clean and hazard-free
environment.
To Don:
• Place the blower unit with the breathing tube facing up
against the back and buckle belt around the user’s waist.
Adjust the belt for a proper fit prior to buckling.
• Turn on the blower unit
• Place the hood on the head and adjust the
suspension for a comfortable and secure fit.
To Doff:
• Remove hood from head.
• Turn off the blower unit.
• Unbuckle belt and place on flat surface.
• Remove used hood and dispose. When
finished, leave PAPR in dirty utility room to be
picked up by Distribution.
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Low Voltage Audible Alarm
The alarm may indicate:
• Low Battery Voltage
• Clogged or Damaged Filter
• Blower Malfunction
• Breathing Tube or Hood Malfunction
If the alarm sounds, exit the work area
immediately and return PAPR to dirty
utility to be picked up by Distribution.
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If you have any questions, please
contact the Environmental Health and
Safety office at 617-667-3088. (If after
hours, page the on-call Safety Officer
pager # 33137)
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