Page 21 of 32
P/N 89332-01 Rev F 7/11
WARNING
IF RESPIRATOR USE IS RESUMED AFTER
THE AIR HAS BEEN PARTIALLY CONSUMED
(CYLINDER LESS THAN FULL), YOU MUST BE
CERTAIN THAT THE REMAINING AIR WILL BE
SUFFICIENT FOR YOUR SAFETY. (SEE STEP
13 IN USE OF RESPIRATOR SECTION.) USE
OF A RESPIRATOR WITHOUT A SUFFICIENT
SUPPLY OF BREATHING AIR MAY RESULT
IN SUDDEN TERMINATION OF BREATHING
AIR RESULTING IN SERIOUS INJURY OR
DEATH.
CAUTION
FAILURE TO RELEASE TENSION ON
SHOULDER STRAPS BEFORE REMOVING
RESPIRATOR MAY CAUSE PREMATURE
WEAR OR DAMAGE TO STRAPS AND/OR
RESPIRATOR ASSEMBLY.
CAUTION
DO NOT LEAVE THE CYLINDER VALVE
OPEN WHEN THE RESPIRATOR IS NOT
IN USE. OVER TIME, THE CYLINDER MAY
LOSE PRESSURE AND HAVE INSUFFICIENT
BREATHING AIR WHEN NEEDED.
WARNING
IF AIRFLOW FROM THE REGULATOR
CANNOT BE STOPPED BY DEPRESSING THE
AIR SAVER/DONNING SWITCH, IMMEDIATELY
CLOSE THE CYLINDER VALVE TO PREVENT
DEPLETION OF THE AIR REMAINING IN
THE CYLINDER. LOSS OF BREATHING AIR
MAY RESULT IN REDUCED DURATION OF
THE RESPIRATOR WHICH COULD LEAD TO
SERIOUS INJURY OR DEATH.
CAUTION
FAILURE TO RELEASE TENSION ON NECK
STRAPS BEFORE REMOVING FACEPIECE
M AY C A U S E P R E M AT U R E W E A R O R
DAMAGE TO STRAPS AND/OR FACEPIECE
ASSEMBLY.
WARNING
DO NOT ALLOW RESPIRATOR TO DROP
FROM BODY WHEN REMOVING. DROPPING
OF THE RESPIRATOR MAY CAUSE DAMAGE
TO THE RESPIRATOR THAT MAY LEAD TO
A MALFUNCTION WHICH COULD RESULT IN
INJURY OR DEATH.
TERMINATION OF USE
To doff the facepiece (i.e., remove the facepiece and terminate re-
spiratory protection), proceed as follows:
1. Leave contaminated area or be certain that respiratory protection
is no longer required. Decontamination may be required by your
respiratory protection program.
2. Loosen the neck straps by simultaneously lifting the lower buckle
release levers outward (away from the head) and lifting facepiece
away from face. The buckle release levers are the “U-shaped”
extensions of the facepiece buckle assemblies.
NOTE
THE USER MAY FIND IT MORE COMFORTABLE TO FIRST RE-
LIEVE TENSION ON THE UPPER STRAP BY LIFTING THE UPPER
BUCKLE RELEASE LEVERS.
3. To stop the flow of air from the facepiece, fully depress the air
saver/donning switch on top of the regulator and release.
NOTE
OPERATION OF THE AIR SAVER/DONNING SWITCH IS INTENDED TO
PREVENT A FREE FLOW OF AIR AND THE DEPLETION OF THE AIR
SUPPLY WHEN THE FACEPIECE IS DOFFED. WITH THE AIR SAVER/
DONNING SWITCH ACTIVATED, THE PURGE VALVE AND BELL
ALARM WILL FUNCTION NORMALLY. IF THE PURGE VALVE HAS
BEEN ADJUSTED TO PRODUCE A FLOW, OR IF THE BELL ALARM
IS IN OPERATION, THE AIR WILL CONTINUE TO BE DEPLETED.
4. Remove the facepiece by pulling it up and over the head.
NOTE
IF THE RESPIRATOR IS NOT GOING TO BE USED FOR A PE-
RIOD OF TIME, CLOSE THE CYLINDER VALVE.
5. To resume use of the respirator, repeat the facepiece donning
procedure (see USE OF RESPIRATOR Section).
6. When respirator operations are completed and only when in a
safe breathing area, check that the cylinder valve is closed, and
vent the residual air from the respirator by opening the purge
valve. After waiting until the air flow stops, close the purge valve.
Loosen shoulder straps by depressing the thumb tabs on ends of
shoulder strap buckles and release waist belt by either simultane-
ously squeezing top and bottom releases if equipped with a side
release waist belt buckle or depressing center button if equipped
with center release buckle. Remove the unit from your back.
Proceed in accordance with the requirements of your respiratory
protection program for service of the respirator. The respiratory
protection program should include procedures for replacement
of the cylinder with a fully charged cylinder (see CYLINDER
REPLACEMENT Section) and for carrying out the instructions in
STANDBY INSPECTION, CLEANING AND STORAGE section for
respirator and accessories.
CAUTION
OVERTIGHTENING THE CYLINDER VALVE
MAY CAUSE DAMAGE THAT COULD RESULT
IN LEAKAGE OF AIR FROM THE CYLINDER.
USE NO TOOLS TO CLOSE THE CYLINDER
VALVE.
