Page 20 of 32
P/N 89332-01 Rev F 7/11
BEGIN USE OF THE RESPIRATOR
WARNING
WHEN THE BELL ALARM ACTUATES IT
WARNS THE USER THAT APPROXIMATELY
25% OF THE FULL PRESSURE REMAINS IN
THE CYLINDER (THAT IS, APPROXIMATELY
3/4 OF THE TOTAL AIR SUPPLY HAS
BEEN USED). IN THIS EVENT, LEAVE THE
CONTAMINATED AREA AT ONCE. IN AREAS
WHERE MORE THAN ONE RESPIRATOR IS
BEING USED, YOU MAY IDENTIFY YOUR
OWN ALARM BY SENSING THE VIBRATIONS
THROUGH YOUR BACKFRAME.
1. If regulator is not attached to facepiece, be sure the regulator
gasket is in place around the outlet port of the regulator and not
damaged.
2. To attach the regulator to the facepiece, hold the regulator with
the red purge valve in the 12 o’clock position, align the two flats
of the outlet port with corresponding flats in the facepiece port
and insert. Rotate the regulator counterclockwise (viewed from
inside of facepiece) so that the red purge valve knob is situated on
the left side of the facepiece. The lock tab on the mask-mounted
regulator will lock into the facepiece retainer with a “click”. When
properly engaged, the regulator will not rotate.
With facepiece sealed to face, inhale sharply to actuate respirator.
Air will then be supplied during inhalation.
NOTE
IF AIR IS NOT SUPPLIED ON FIRST INHALATION, CHECK THAT
CYLINDER VALVE IS OPEN, REMOTE GAUGE INDICATES PRES-
SURE IN CYLINDER AND FACEPIECE IS SEALED TO FACE.
3.
NEGATIVE PRESSURE LEAK TEST
– Close cylinder valve by
simultaneously pushing in on cylinder valve knob and rotating it
clockwise. Breathe on respirator until airflow stops. The bell alarm
will actuate, then stop. Inhale slowly and hold your breath mo-
mentarily. No leakage of air shall be detected and the facepiece
shall be drawn slightly to the face. Open cylinder valve fully and
breathe normally.
4. If the environment is suitably quiet, leakage from the facepiece
can also be detected by listening for a flow of air while holding
your breath. Inhale and hold your breath momentarily after don-
ning the facepiece. Do not depress air saver switch. Air should
not be heard flowing into the facepiece from the regulator and no
flow of air shall be detected outward from the facepiece.
NOTE
IF LEAKAGE OF AIR IS DETECTED DURING EITHER OF THE
ABOVE PROCEDURES, DEPRESS THE AIR SAVER/DONNING
SWITCH ON THE TOP OF THE REGULATOR, DOFF THE FACE-
PIECE AND REPEAT DONNING STEPS 1 THROUGH 8 ABOVE.
IF LEAKAGE PERSISTS, DO NOT USE THE RESPIRATOR.
5. Proceed with use of respirator in accordance with your respiratory
protection program.
EVERY ENTRY INTO A CONTAMINATED OR UNKNOWN ATMO-
SPHERE SHOULD BE PLANNED TO ENSURE THAT THERE IS
SUFFICIENT AIR SUPPLY TO ENTER, CARRY OUT THE TASKS
REQUIRED AND RETURN TO A SAFE BREATHING AREA. THE
USER SHOULD CHECK THE REMOTE READING PRESSURE
GAUGE ON THE SHOULDER STRAP PERIODICALLY TO DE-
TERMINE THE RATE OF AIR CONSUMPTION. IN ANY EVENT,
THE USER MUST BE CERTAIN TO ALLOW SUFFICIENT AIR
FOR EGRESS FROM THE CONTAMINATED AREA. IF ENTRY
IS ATTEMPTED AFTER THE AIR HAS BEEN PARTIALLY CON-
SUMED (CYLINDER LESS THAN FULL), THE USER MUST BE
CERTAIN THAT THE REMAINING AIR WILL BE SUFFICIENT FOR
SAFETY.
Leave the contaminated or unknown atmosphere immediately
if the bell alarm actuates and, in a safe area, determine cause
of alarm. When air supply has been depleted, replace cylinder
following CYLINDER REPLACEMENT PROCEDURE.
