Scott 2 Troubleshooting guide

OPERATION AND MAINTENANCE INSTRUCTIONS
SCOTT®PROFLOW 2™
POWERED AIR PURIFYING RESPIRATOR (PAPR)
WARNING
IMPROPER USE OF THIS RESPIRATOR MAYRESULT IN SERIOUS INJURYOR
DEATH. IMPROPER USE INCLUDES, BUT IS NOT LIMITED TO, USE IN ATMO-
SPHERES CONTAINING UNKNOWN CONTAMINANTS AND/OR UNKNOWN
CONCENTRATIONS OF CONTAMINANTS, USE WITHOUT ADEQUATE TRAINING, DIS-
REGARD OF THE WARNING AND INSTRUCTIONS CONTAINED HEREIN AND
FAILURE TO INSPECT AND MAINTAIN THIS RESPIRATOR.
THIS RESPIRATOR IS INTENDED TO BE USED ONLY IN CONJUNCTION WITH AN
ORGANIZED RESPIRATORY PROTECTION PROGRAM WHICH COMPLIES WITH THE
REQUIREMENTS OF “PRACTICES FOR RESPIRATORY PROTECTION,” Z88.2-1992
AVAILABLE FROM AMERICAN NATIONAL STANDARDS INSTITUTE, 11 WEST 42ND
STREET, NEW YORK, NY 10036, OR THE REQUIREMENTS OF OSHA STANDARD 29
CFR 1910.134 AVAILABLE FROM THE U. S. DEPARTMENT OF LABOR, OCCUPA-
TIONAL SAFETYAND HEALTH ADMINISTRATION, OR OTHER PERTINENT NATIONAL
RECOGNIZED STANDARDS (LIKE THE COAST GUARD, THE DEPARTMENT OF DE-
FENSE, OR IN CANADIAN STANDARD CSA Z94.4, 1992.
THIS RESPIRATOR IS NOT INTENDED FOR USE IN ATMOSPHERES WHICH ARE,
OR MAY BECOME, IMMEDIATELY DANGEROUS TO LIFE OR HEALTH (IDLH) OR IN
ATMOSPHERES WHERE THE IDENTITY AND/OR CONCENTRATION OF THE CON-
TAMINANT IS UNKNOWN.
THIS RESPIRATOR MUST BE USED ONLY IN ATMOSPHERES FOR WHICH THE
PROPER FILTRATION MEDIA HAS BEEN CHOSEN TO BE EFFECTIVE AGAINST AND
ONLY AT CONCENTRATIONS OF CONTAMINANTS WHICH ARE KNOWN NOT TO BE
IMMEDIATELY DANGEROUS TO LIFE AND HEALTH (NON-IDLH) AND FROM WHICH
A USER MAY ESCAPE WITHOUT THE USE OF THE RESPIRATOR.
THIS RESPIRATOR DOES NOT SUPPLY OXYGEN AND MUST NOT BE USED IN OXY-
GEN DEFICIENT ATMOSPHERES.
Copyright © 2005, SCOTT, All Rights Reserved

WARNING
THIS POWERED AIR PURIFYING DEVICE IS ONLY FOR USE IN SPECIFIC ATMO-
SPHERES AND UNDER CERTAIN CONDITIONS. FOLLOW THESE INSTRUCTIONS
CAREFULLY. FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH.
1
DESCRIPTION
The SCOTT PROFLOW 2 respirator is a blower assisted air-purifying respirator referred to
as a Powered Air-Purifying Respirator or a PAPR.
The SCOTT PROFLOW 2 respirator utilizes two (2) air filtration elements. The filtration
elements must be chosen to be appropriate for the expected contaminants. New air filtra-
tion elements must be installed before each use.
The complete PROFLOW 2 respirator consists of a SCOTT Full Facepiece and head har-
ness of the appropriate model and size to fit the user’s face, a 40mm facepiece adapter, a
breathing tube to connect the full facepiece to a blower assembly, and the battery powered
blower assembly fitted with two (2) air filtration elements, and a belt assembly to support
the blower assembly on the user’s waist. For use, the Ni-MH battery in the blower assem-
bly must be charged and the appropriate air filtration elements must be installed.
The full facepieces are available in a variety of models and sizes. The user of this respira-
tor must be fit tested before use to determine the style and size facepiece that gives the
correct seal to the face and proper visibility for the intended use activities. Where required,
a 40mm adapter assembly attaches to the inlet port of certain facepieces with a quarter
turn and is equipped with a retaining lock. The adapter assembly includes both inhalation
and exhalation check valves.
Use of certain filtration elements may be restricted with respect to the choice of full face-
piece. Refer to the NIOSH Approval Label, Scott P/N 10012227 located in the centerfold of
this manual, for a complete listing of facepieces and filtration approved for use with the
SCOTT PROFLOW 2 respirator.
The corrugated breathing tube connects the inlet on the full facepiece to the outlet of the
blower assembly. The breathing tube is available in a selection of lengths and angle con-
figurations to provide the best fit for the respirator user.
The blower assembly contains an electric motor driving an air blower. An ON/OFF push-
button switch is located on the top front of the blower assembly. A digital display provides
information on air flow and battery charge when in the respirator is in operation. A compart-
ment in the housing contains a rechargeable Ni-MH battery. The battery provides a minimum
of four hours of operation when fully charged.
The PROFLOW 2 respirator has two (2) 40mm threaded inlets on the underside of the
blower assembly for the attachment of two (2) air filtration elements.
The waist belt supports the blower assembly at the waist and is fully adjustable.
If you have any questions or concerns, contact your authorized SCOTT dealer or distribu-
tor, or contact SCOTT at 1-800-247-7257.
WARNING
DO NOT OPERATE THIS EQUIPMENT WHILE UNDER THE INFLUENCE OF DRUGS,
ALCOHOL, OR ANY MEDICATIONS OR SUBSTANCES WHICH MAY AFFECT VISION,
DEXTERITY, OR JUDGMENT. USERS OF THIS EQUIPMENT MUST BE IN GOOD
PHYSICAL AND MENTAL HEALTH IN ORDER TO OPERATE SAFELY. DO NOT USE
THIS EQUIPMENT WHEN FATIGUE PREVENTS SAFE OPERATION. STAY ALERT
WHEN OPERATING THIS EQUIPMENT. INATTENTION OR CARELESSNESS WHILE
OPERATING THIS EQUIPMENT MAY RESULT IN SERIOUS INJURY OR DEATH.

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.

WARNING
THE FAILURE TO CHOOSE A RESPIRATOR EQUIPPED WITH A AIR FILTRATION
ELEMENT AND/OR FILTER SUITABLE FOR THE CONTAMINANT(S) IN THE ATMO-
SPHERE OR LIKELY TO BE RELEASED IN THE ATMOSPHERE MAY RESULT IN THE
RESPIRATOR PROVIDING LITTLE OR NO PROTECTION AGAINST THE CONTAMI-
NATED ATMOSPHERE AND MAY RESULT IN SERIOUS INJURY OR DEATH.
WARNING
FAILURE TO FIT THE RESPIRATOR TO THE USER MAY RESULT IN LITTLE OR NO
RESPIRATORY PROTECTION AND MAY EXPOSE THE WEARER TO SUBSTANCES
WHICH CAN CAUSE SERIOUS INJURY OR DEATH.
WARNING
THE INFORMATION IN THIS INSTRUCTION IS MEANT TO SUPPLEMENT, NOT TO
REPLACE, AN ORGANIZED RESPIRATORY PROTECTION PROGRAM WHICH COM-
PLIES WITH THE REQUIREMENTS OF “PRACTICES FOR RESPIRATORY
PROTECTION,” Z88.2-1992 OR THE REQUIREMENTS OF OSHA STANDARD 29 CFR
1910.134, OR OTHER PERTINENT NATIONAL RECOGNIZED STANDARDS (LIKE THE
COAST GUARD, THE DEPARTMENT OF DEFENSE, OR IN CANADIAN STANDARD
CSA Z94.4, 1992. SEE WARNING ON FIRST PAGE OF THIS DOCUMENT.
LIMITATIONS ON USE
CONTINUED ON NEXT PAGE...
3
LIMITATIONS ON USE
1. INTENDED USE:
The SCOTT PROFLOW 2 respirator is intended for use as respiratory protection from
airborne contaminants.
2. TRAINING REQUIRED BEFORE USE:
The personnel using this respirator must have received training in accordance with
their employer’s respiratory protection program and in accordance with the require-
ments set forth by ANSI, OSHA, and other recognized respiratory protection standards
(see WARNING on first page of this instruction). Each individual using the respirator
must also have received training in the use of the respirator including, but not limited
to, pre-use check, donning, leak check, use, doffing (removal) and after use care of
the respirator.
3. IDENTITYAND CONCENTRATION OF CONTAMINANT MUST BE KNOWN BEFORE USE:
The SCOTT PROFLOW 2 respirator may only be used in areas where the identity of the
airborne contaminant has been determined, by test, measurement, or other means, and
that the air filtration media used is effective in removing the contaminant from the air.
4. USE NOT PERMITTED IN IMMEDIATELY DANGEROUS TO LIFE AND HEALTH
(IDLH) ATMOSPHERES:
During use of this respirator, the employer must monitor the level of contamination in the
atmosphere and provide for the withdrawal of the using personnel in the event that the
contamination level increases to immediately dangerous to life and health (IDLH) levels.
5. FIT TESTING OF USERS REQUIRED BEFORE USE:
Before the SCOTT PROFLOW 2 respirator can be used, the employer must have fit
tested the personnel who will be using the respirator with the appropriate facepiece, iden-
tified the best fitting size and/or style for each individual and provided for the availability of
the correct size and/or style for use by the individuals who will use the respirator. The fit
testing shall be Quantitative test outlined inAppendix A and B of 29 CFR paragraph 1910.134
(the OSHA fit tests) or in an equally effective or more effective manner.

4
LIMITATIONS ON USE CONTINUED...
6. USE WITH FACIAL HAIR NOT PERMITTED:
The employer providing the SCOTT PROFLOW 2 respirator for use by its personnel
must train the user in the importance of maintaining a good seal between the face-
piece and the face. This respirator may not be used by personnel with facial hair that
comes between the faceseal of the facepiece and the face of the user, or by personnel
who have any other condition which would prevent a good seal to the face.
7. USE WITH CORRECTIVE LENSES NOT PERMITTED IF THEY INTERFERE WITH SEAL:
This respirator may not be used with eye glasses that include temple pieces that
come between the faceseal of the facepiece and the face. For personnel requiring
corrective lenses, the facepiece may be equipped with a lens holder kit. (See FACE-
PIECES FOR USE WITH THE PROFLOW 2 RESPIRATOR section of this instruction).
Although contact lenses may be worn with the facepiece, the decision to use or not
use contact lenses should be determined by the program administrator as part of the
training program.
8. INSPECTION, CLEANING AND MAINTENANCE OF RESPIRATOR REQUIRED:
The employer using this respirator must insure that the respirators are properly in-
spected before use, properly cleaned and maintained after use, properly
decontaminated, if necessary, after use, and properly stored between uses.
9. PROTECTIVE CLOTHING REQUIRED FOR USE WHEN NECESSARY:
The SCOTT PROFLOW 2 respirator protects only the face and the respiratory tract
from airborne contaminants. The employer must provide the appropriate protective
clothing and head wear for use with this respirator and must insure that protective
clothing and head wear does not interfere with the respirator.
10. USE IN EXPLOSIVE ATMOSPHERES NOT PERMITTED:
The SCOTT PROFLOW 2 respirator contains a battery and may not be taken into or
used in atmospheres containing flammable or explosive gasses, vapors, or dusts when
the concentration of such contaminants is near or above the lower flammable limit
(LFL)
11. USE OTHER THAN INTENDED USE NOT PERMITTED:
Do not use the SCOTT PROFLOW 2 respirator for fire fighting, in oxygen deficient
atmospheres, or for protection from airborne contaminants which the chosen filtration
media does not protect against.

FIGURE 1
PREPARATION FOR USE
CONTINUED ON NEXT PAGE...
5
PREPARATION FOR USE
On receipt of a new SCOTT PROFLOW 2 respirator, unpack the components and verify
that the respirator is complete and undamaged.
NOTE
EACH AIR FILTRATION ELEMENT MUST REMAIN SEALED UNTIL THE RESPIRATOR
IS MADE READY FOR ACTUAL USE.
1. Wash, disinfect, and dry the breathing tube and the facepiece according to the
CLEANING AND INSPECTION section of this instruction.
2. FACEPIECE IDENTIFICATION
The SCOTT PROFLOW 2 respirator may be used with a variety of SCOTT full facepieces
as shown in the list on page 20. The essential operation of all full facepieces is the same,
but certain features are applied differently depending the style of full facepiece. There are
two basic styles: WITH ADAPTER and WITHOUT ADAPTER. During facepiece fitting and
training, become thoroughly familiar with the facepiece with which you are fitted.
FACEPIECES WITH ADAPTER
When required by the style of facepiece chosen, install the 40mm adapter, SCOTT P/N
805059-01 on the respirator facepiece as follows:
a) Verify that the seal on the back of the 40mm adapter is in good condition.
b) Verify that the Inhalation Valve is properly installed and in good condition.
c) Verify that the gasket inside the
threaded connector is clean and
properly installed.
d) Align the two flat edges of the
bayonet mount on the 40mm
adapter with the matching flats on
the clear mounting adapter on the
front of the facepiece.
e) Rotate the 40mm adapter 90 de-
grees until the locking clip is
aligned with notch in facepiece
lens.
f) Push locking clip fully into notch
to prevent rotation of adapter. Ori-
entation shall be as shown in
FIGURE 1.
FACEPIECES WITHOUT ADAPTER
Certain full facepieces do not require an adapter. Inspect the threaded connector of the
facepiece without adapter as follows:
g) Verify that the inhalation valve/valve seat is in good condition.
h) The inhalation valve/valve seat also serves as the gasket in the threaded con-
nector. Verify that it is clean and properly installed.
3. The breathing tube is available in a selection of lengths and angle configurations to
provide the best fit for the respirator user. On breathing tubes equipped with a 90°
right angle connector on one end, the right angle connector end attaches to the face-
piece. Attach the breathing tube assembly to facepiece as follows:
a) If present, remove the plastic plugs from the ends of the breathing tube
assembly.
b) Inspect the threaded connector in the facepiece adapter.
c) Thread the male end of breathing tube into the female thread on the threaded
connector until hand tight.

6
PREPARATION FOR USE CONTINUED...
4. If Belt Assembly is not installed, attach the belt assembly as follows:
a) Note the lacing path of the belt through the male buckle and remove the male
buckle and keeper loops from the end of the belt (the female buckle is sewn onto
the belt).
b) Thread the belt through the two (2) belt loops on the blower assembly.
c) Replace the keeper loops and lace the male buckle back onto the belt.
5. The Ni-MH Battery must be charged before initial use and after each subsequent use.
Battery charging must be performed in temperatures
between 50° F and 85° F (10° C and 30° C). Use only
battery chargers designed for use with your PROFLOW
2 respirator unit. The following instructions are for the
standard charger supplied with your PROFLOW 2:
a) Connect the battery charger to suitable power
source.
b) On the PROFLOW 2 respirator unit, open the pro-
tective cap on the charging connector.
c) Insert the charger plug into the charging con-
nector and turn clockwise until the lock clicks.
See FIGURE 2.
NOTE
CHARGER PLUG IS KEYED AND WILL FIT INTO THE
CHARGING CONNECTOR ONLY ONE WAY.
d) Charge a new battery approximately six (6) hours.
6. The PROFLOW 2 respirator is equipped with a digital display to provide status infor-
mation about the performance of the blower. See FIGURE 3. The display shows the
e) When charging is complete, remove the charger plug by pulling back on the lock
while turning counterclockwise.
f) Replace the protective cap on the charging connector.
g) Test operation of unit as outlined in the USE OF THE PROFLOW 2 RESPIRA-
TOR section this instruction.
FIGURE 2
BATTERY CHARGE STATUS desig-
nated by a “C” with a number, as well as
an AIR FLOW STATUS designated by an
“F” with a number. The digital display
operates as follows:
a) Upon power up, the PROFLOW 2
respirator will sound an ALARM tone
as a functional test. If the ALARM
tone does not function after power
up, DO NOT USE THE RESPIRA-
TOR. REMOVE THE RESPIRATOR
FROM SERVICE AND TAG IT FOR FIGURE 3
AIR FLOW
BATTERY CHARGE
REPAIR BY AUTHORIZED PERSONNEL.
WARNING
THE ALARM TONE PROVIDES AN AUDIBLE INDICATION OF BATTERY CHARGE STA-
TUS AND AIR FLOW STATUS. IF THE ALARM TONE DOES NOT OPERATE AS STATED
IN THIS INSTRUCTION, THE USER MAY NOT BE ALERTED TO CHANGES IN THE
PERFORMANCE OF THE RESPIRATOR WHICH COULD LEAD TO REDUCED PRO-
TECTION AND EXPOSURE OF THE USER TO THE HAZARDOUS ATMOSPHERE
WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

7
b) After start-up, the blower will stabilize at the standard flow rate and the display
will begin to alternate between the BATTERY CHARGE STATUS (C#) and the
AIR FLOW STATUS (F#).
c) The BATTERY CHARGE STATUS display reading of:
i) C9 to C7 indicates the battery charge is sufficient to provide full duration of the
respirator with fresh air filtration elements;
ii) C6 to C1 indicates the battery charge will provide less than full duration of the
respirator. The respirator user must monitor the battery charge status closely;
iii) C0 indicates the battery charge is nearly exhausted and that you should im-
mediately leave the contaminated area and recharge the battery;
iv) When there are five to ten minutes of blower operation remaining until the
blower shuts down, the display will start blinking C0 and the ALARM tone will
sound twice approximately every thirty (30) seconds. The respirator user must
exit the hazardous atmosphere and terminate use of the respirator until the
battery is recharged.
d) The AIR FLOW STATUS is a scaled indication of blower efficiency. A display reading of:
i) F9 to F3 indicates the standard range of blower efficiency to provide full dura-
tion from the charged battery;
ii) F2 to F1 indicates the blower efficiency is still acceptable, but blower resis-
tance has increased to the point where it will shorten the expected battery
duration;
iii) F0 indicates the blower efficiency has decreased below acceptable levels due
to increased resistance either from filter blockage or some other cause and
that the blower may not be able to maintain the required flow. The display will
begin blinking F0 and the ALARM tone will sound once approximately every
two (2) seconds. The respirator user must exit the hazardous atmosphere and
terminate use of the respirator until filters are replaced or other cause of flow
restriction is identified and corrected.
e) When any ALARM sounds, the user must immediately leave the contaminated
atmosphere, terminate use of the respirator, determine the cause of the ALARM,
and take the appropriate corrective action.
WARNING
MONITOR THE BATTERY CHARGE STATUS REGULARLY WHILE USING THE
RESPIRATOR. CHECK THE STATUS MORE FREQUENTLY WHEN THE DIS-
PLAY READS C2 OR C1. A LOW BATTERY CHARGE MAY RESULT IN
DECREASED BLOWER POWER AND INSUFFICIENT FLOW TO MAINTAIN THE
RESPIRATOR PROTECTION LEVEL. A REDUCED PROTECTION LEVEL MAY
RESULT IN EXPOSURE OF THE USER TO THE HAZARDOUS ATMOSPHERE
WHICH MAY RESULT IN SERIOUS INJURY OR DEATH.
WARNING
WHEN ANY ALARM SOUNDS, IMMEDIATELY LEAVE THE CONTAMINATED ATMO-
SPHERE AND TAKE THE APPROPRIATE CORRECTIVE ACTION. AN ALARM
CONDITION INDICATES THE POTENTIAL OF A REDUCED LEVEL OF PROTECTION
TO THE RESPIRATOR USER. FAILURE TO LEAVE THE CONTAMINATED ATMO-
SPHERE WHEN AN ALARM SOUNDS MAY EXPOSE THE USER TO THE HAZARDOUS
ATMOSPHERE WHICH MAY RESULT IN SERIOUS INJURY OR DEATH.
WARNING
MONITOR THE AIR FLOW STATUS REGULARLY WHILE USING THE RESPIRATOR.
DECREASED AIR FLOW MAY RESULT IN REDUCED FILTER EFFICIENCY. REDUCED
FILTER EFFICIENCY MAY RESULT IN EXPOSURE OF THE USER TO THE HAZARD-
OUS ATMOSPHERE WHICH MAY RESULT IN SERIOUS INJURY OR DEATH.
PREPARATION FOR USE
CONTINUED ON NEXT PAGE...

WARNING
DO NOT OVER TIGHTEN AIR FILTRATION ELEMENTS. OVER TIGHTENING MAY
DISTORT THE GASKET RESULTING IN LEAKAGE THAT MAY EXPOSE THE WEARER
TO SUBSTANCES WHICH CAN CAUSE SERIOUS INJURY OR DEATH.
FIGURE 4
INSPECT
GASKET
8
PREPARATION FOR USE CONTINUED...
7. Attach the breathing tube to the blower assembly as follows:
a) Inspect the gasket inside of the female end of the breathing tube. Do not use the
respirator with a missing or damaged gasket. (Replacement gasket is SCOTT P/
N 10011051).
b) Remove the Retaining Ring from the blower assembly. Retain this bushing for
future use.
NOTE
KEEP THE RETAINING RING FOR FUTURE USE. SEE BATTERY REPLACEMENT
SECTION OF THIS INSTRUCTION.
c) Attach the female end of the breathing tube onto the blower assembly by thread-
ing the collar onto the air outlet clockwise until hand tight.
8. When ready for use of the respirator, install air filtration elements as follows:
a) Inspect the gaskets in each of the air filtration element ports. See FIGURE 4. If
c) Remove the air filtration elements from the sealed containers. Air filtration ele-
ments are considered to have been put in service when they are removed from
their sealed containers. Air filtration elements are intended for one time use only.
d) Attach the air filtration elements to blower assembly by threading into the air
filtration element ports until hand tight. TIGHTEN FIRMLY BUT DO NOT OVER
TIGHTEN.
either gasket is damaged or missing, replace
with SCOTT P/N 10011051. Do not use a
blower assembly with any of the gaskets
damaged or missing as any leakage at these
connections would be into the respirator.
b) Open sealed containers containing air filtra-
tion elements.
NOTE
DO NOT OPEN SEALED CONTAINERS UNTIL AIR
FILTRATION ELEMENTS ARE NEEDED FOR USE.
SERVICE LIFE OF AIR FILTRATION ELEMENTS BE-
GINS WHEN THEY ARE REMOVED FROM THE
SEALED CONTAINERS.
The SCOTT PROFLOW 2 respirator has now been prepared for use. Refer to the DONNING
PROCEDURES before actual use of the respirator.

WARNING
FAILURE TO DON FACEPIECE TIGHTLY AS INSTRUCTED MAY EXPOSE THE USER
TO THE HAZARDOUS ATMOSPHERE THE RESPIRATOR IS DESIGNED TO PROTECT
AGAINST AND RESULT IN SERIOUS INJURY OR DEATH.
FIGURE 6
FIGURE 5
9
DONNING PROCEDURES
Donning (i. e.: securing the respirator to the body, securing the facepiece on the face, and
obtaining and checking for a proper seal) must be done in an area know to be free of
contaminants. The respirator user must have received training and have practiced this
procedure before attempting to use the respirator for respiratory protection.
1. Examine the SCOTT full facepiece to be certain it is complete and in serviceable
condition. Check to see that the inhalation and exhalation valves are properly installed
and operational.
2. Examine the breathing tube assembly to verify that
it is properly connected to both the mask and the
blower assembly.
3. Examine air filtration elements to verify that they
are properly installed to the blower assembly.
4. Push the push-button switch to the ON position to
confirm that battery is charged and blower is work-
ing. Turn switch OFF.
5. Don the waist belt with blower assembly so that
the breathing tube outlet is located at the top of
the unit. Fasten the buckle and adjust the waist
belt. See FIGURE 5.
6. Position blower assembly on back of one hip on
either the right or left side of the body. When prop-
erly donned, the ON/OFF switch shall be accessible
to the user and the digital display shall be visible to
the user. See FIGURE 6.
7. Don respirator facepiece and perform NEGATIVE
PRESSURE LEAK CHECK (as detailed in Step 8)
a) Adjust the head straps to their full outward
position.
b) Hold the head harness out of the way with
one hand or fold back over the lens.
c) Place the facepiece on the face with chin prop-
erly located in the chin pocket.
d) Pull the head harness over the head and
tighten the neck straps by pulling the two lower
strap ends toward the rear of the head.
e) Stroke the head harness net down the back
of the head using one or both hands. Retighten
the neck straps.
f) Adjust the temple straps by pulling the two
upper strap ends toward the back of the head.
Overtightening may cause discomfort.
g) Some facepieces are equipped with one or
two additional straps at the forehead. Tighten
the forehead strap(s).
h) Retighten the neck straps if required.