Termination Of Use - Scott AIR-PAK NxG2 Operating & Maintenance Instructions

TERMINATION OF USE

To doff the facepiece (i.e., remove the facepiece and terminate res-
piratory protection), proceed as follows:
1. Leave contaminated area or be certain that respiratory protection
is no longer required.
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" ex-
tensions of the facepiece buckle assemblies.
THE USER MAY FIND IT MORE COMFORTABLE TO FIRST RELIEVE
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.
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 DOFFED. WITH THE AIR
SAVER/DONNING SWITCH ACTIVATED, THE PURGE VALVE AND VI-
BRALERT WILL FUNCTION NORMALLY. IF THE PURGE VALVE HAS
BEEN ADJUSTED TO PRODUCE A FLOW, OR IF THE VIBRALERT IS
IN OPERATION, THE AIR WILL CONTINUE TO BE DEPLETED FROM
THE RESPIRATOR CYLINDER UNTIL THE CYLINDER VALVE IS
CLOSED.
4. Remove the facepiece by pulling it up and over the head.
IF THE RESPIRATOR IS NOT GOING TO BE USED FOR A PERIOD
OF TIME, CLOSE THE CYLINDER VALVE. LEAVING THE AIR
SAVER/DONNING SWITCH ACTIVATED AND THE CYLINDER VALVE
OPEN FOR AN EXTENDED PERIOD OF TIME, MAY RESULT IN IN-
TERMITTENT ACTIVATION OF THE VIBRALERT EVEN WHEN
MORE THAN 25% OF THE AIR SUPPLY REMAINS.
5. To resume use of the respirator, repeat the facepiece donning pro-
cedure (see USE OF RESPIRATOR Section). If respirator use is
resumed, the user must make certain that the remaining air sup-
ply in the cylinder is sufficient to accomplish the purpose for which
respirator use has been resumed. It is recommended that, when-
ever practical, partially depleted cylinders be replaced with full cyl-
inders before respirator use is resumed. Never resume use of a
respirator where termination of use has occurred because of the
activation of an end of service indicator alarm without first deter-
mining and correcting the reason for the end of service indicator
alarm activation.
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. Slightly loosen
shoulder straps by lifting ends of shoulder strap slide buckles up,
release waist belt by pressing release button in center of waist belt
buckle, and 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 the CYLINDER REPLACEMENT Section of
this instruction) and for carrying out the instructions in the
STANDBY INSPECTION, CLEANING AND STORAGE section of
this instruction for respirator and accessories.
NOTE
NOTE
NOTE
FAILURE TO RELEASE TENSION ON NECK
STRAPS BEFORE REMOVING FACEPIECE
MAY CAUSE PREMATURE WEAR OR DAM-
AGE TO STRAPS AND/OR FACEPIECE AS-
SEMBLY.
AN IMPACT TO THE REGULATOR WHILE
THE CYLINDER VALVE IS OPEN AND THE
AIR SAVER SWITCH IS ACTIVATED MAY
CAUSE AIR TO FLOW FROM THE REGULA-
TOR AND DEPLETE THE AIR REMAINING IN
THE CYLINDER. DEPLETION OF THE AIR
SUPPLY MAY RESULT IN SERIOUS INJURY
OR DEATH.
IF AIRFLOW FROM THE REGULATOR CAN-
NOT BE STOPPED BY DEPRESSING THE
AIR SAVER SWITCH, IMMEDIATELY CLOSE
THE CYLINDER
DEPLETION OF THE AIR REMAINING IN
THE CYLINDER. DEPLETION OF THE AIR
SUPPLY MAY RESULT IN SERIOUS INJURY
OR DEATH.
AN IMPACT TO THE REGULATOR WHILE
THE CYLINDER VALVE IS OPEN AND THE
AIR SAVER SWITCH IS ACTIVATED MAY
CAUSE AIR TO FLOW FROM THE REGULA-
TOR AND DEPLETE THE AIR REMAINING IN
THE CYLINDER.
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.
USE OF A RESPIRATOR WITH INSUFFI-
CIENT AIR
SERIOUS INJURY OR DEATH.
DO NOT LEAVE CYLINDER VALVE OPEN
WHEN RESPIRATOR IS NOT IN USE.
FAILURE
SHOULDER STRAPS BEFORE REMOVING
RESPIRATOR MAY CAUSE PREMATURE
WEAR OR DAMAGE TO STRAPS AND/OR
RESPIRATOR ASSEMBLY.
DO NOT ALLOW RESPIRATOR TO DROP
WHEN HANDLING. DROPPING OF RESPIRA-
TOR MAY CAUSE DAMAGE TO RESPIRATOR
THAT MAY RESULT IN INJURY OR DEATH.
20
CAUTION
WARNING
WARNING
VALVE TO PREVENT
CAUTION
WARNING
SUPPLY MAY RESULT
CAUTION
CAUTION
TO RELEASE TENSION
WARNING
IN
ON