Operational Testing - Scott AIR-PAK 75i 2.2 Operating & Maintenance Instructions

REGULAR OPERATIONAL INSPECTION CONTINUED...

OPERATIONAL TESTING

1. Check that the breathing regulator purge valve (red knob on regula-
tor) is closed (full clockwise and pointer on knob upward).
2. Fully depress the center of the air saver/donning switch on the top
of the regulator and release.
3. Slowly open the cylinder valve by fully rotating the knob counterclock-
wise.
a) VIBRALERT alarm shall actuate and then stop.
b) The optional HEADS-UP DISPLAY will initialize with all five lights
on for twenty seconds followed by display of cylinder supply level.
If the LOW BATTERY light at the far right of the display remains lit
or begins to flash, replace the batteries according to the BATTERY
REPLACEMENT section of this instruction before proceeding.
c) If the respirator is equipped with the PASS device distress alarm,
the distress alarm will be actuated when the cylinder valve is
opened. Refer to Operating and Maintenance instructions of the
PASS device distress alarm for the regular operational inspection
of the PASS device distress alarm.
4. Check that the remote pressure gauge is operating properly and that
it reads within 10% of the value on the cylinder pressure gauge.
5. Don the facepiece or hold the facepiece to the face to affect a good
seal. Inhale sharply to automatically start the flow of air. Breathe
normally from the facepiece to ensure proper operation.
6. Remove facepiece from face. Air shall freely flow from the facepiece.
7. Fully depress the air saver/donning switch on the top of regulator
and release. The flow of air from the facepiece shall stop. Examine
the complete respirator for air leaks. There shall be no leakage of
air from any part of the respirator.
8. Check the purge valve:
a) Rotate purge valve 1/2 turn counterclockwise (pointer on knob
downward). Air shall freely flow from the regulator.
b) Rotate purge valve 1/2 turn clockwise to full closed position (pointer
on knob upward). Air flow from regulator shall stop.
P/N 595236-01 Rev. B 10/11 Page 14 of 44
WARNING
IF THE END OF SERVICE INDICATOR ALARM
DOES NOT ACTUATE AS DESCRIBED IN
THIS INSTRUCTION, DO NOT USE THE
RESPIRATOR. REMOVE THE RESPIRATOR
FROM SERVICE AND TAG IT FOR REPAIR
BY AUTHORIZED PERSONNEL. USE OF AN
IMPROPERLY OPERATING END OF SER-
V I C E I N D I C A T O R M A Y R E S U L T I N S E R I-
O U S I N J U R Y O R D E A T H .
WARNING
IF THE RESPIRATOR IS EQUIPPED WITH
A PASS DEVICE DISTRESS ALARM AND
IT FAILS TO FUNCTION IN ACCORDANCE
WITH THE INSTRUCTIONS CONCERNING
REGULAR OPERATIONAL INSPECTION SUP-
PLIED WITH THE DISTRESS ALARM, DO NOT
USE THE RESPIRATOR. REMOVE IT FROM
SERVICE AND TAG FOR REPAIR BY AUTHO-
RIZED PERSONNEL. FAILURE TO PROPERLY
IDENTIFY MALFUNCTIONS MAY RESULT IN
SERIOUS INJURY OR DEATH.