WARNING
THE SCOTT PROFLOW 2 POWERED AIR PURIFYING RESPIRATOR MAY BE USED
WITH SEVERAL DIFFERENT SCOTT FULL FACEPIECES. FIT TESTING AND RESPI-
RATOR TRAINING IS REQUIRED BEFORE USE. FAILURE TO TRAIN AND PROPERLY
FIT THE FACEPIECE TO THE USER MAY EXPOSE THE USER TO THE ATMOSPHERE
THE RESPIRATOR IS DESIGNED TO PROTECT AGAINST WHICH MAY RESULT IN
SERIOUS INJURY OR DEATH.
2
THEORY OF OPERATION
The SCOTT PROFLOW 2 respirator is a powered air-purifying respirator. The user of the
respirator breathes ambient air after the air has passed through a pair of air filtration
elements. The air filtration elements include a mechanical filter to trap airborne particles
and may include a sorbent bed of impregnated activated carbon to trap and/or neutralize
various gases.
The facepiece is intended to seal against the user’s face and allows the user to breathe the
air drawn through the air filtration elements. An inhalation check valve prevents exhaled air
from entering the blower assembly. An exhalation valve allows the exhaled breath to exit the
facepiece into the surrounding atmosphere.
The blower assembly assists breathing by drawing air through the air filtration elements and
delivering the purified air through the breathing tube to the facepiece. When the blower as-
sembly is used, the pressure inside the facepiece affords the greatest level of protection to
the user from the contaminants in the atmosphere.
To maintain this level of protection:
1. The user must be properly fit tested to a suitable respirator facepiece before use.
2. The air filtration elements must be new and appropriate for the contaminants in the
atmosphere.
3. The battery must be fully charged before use.
4. The blower must always be used with the blower push-button switch set to the ON
position when the respirator is used in a contaminated atmosphere.