3M SCOTT AIR-PAK X3 PRO Operating & Maintenance Instructions page 42

OPERATING THE RESPIRATOR
TIP
The neck carrying strap for the facepiece allows you to hang the facepiece around your neck after doffing
(see "Using the Respirator in
distributor.
TIP
The air-saver mechanism is intended to prevent a free flow of air and the depletion of the air supply when
the facepiece is removed and the cylinder valve is still open. The purge valve and Vibralert will function
normally with the air-saver mechanism engaged. If the purge valve is open or if the Vibralert is in operation,
the air will continue to be depleted from the respirator until the cylinder valve is closed.
If the air flow from the regulator cannot be stopped by engaging the air-saver mechanism, immediately
close the cylinder valve to prevent depletion of the air remaining in the cylinder. Remove the respirator
from service and tag it for repair by authorized personnel.
6 Close the cylinder valve if you are not going to resume use of the respirator.
NOTE
Do not use tools to close the cylinder valve. Over-tightening the cylinder valve may cause damage that could
result in leakage of air from the cylinder.
TIP
A strike or impact to the regulator while the cylinder valve is open and the air-saver mechanism is
engaged may cause air to flow from the regulator and deplete the air remaining in the cylinder.
Leaving the air-saver mechanism engaged and the cylinder valve open for an extended period of time
may result in intermittent activation of the Vibralert even when more than 33% of the air supply remains.
7 Slightly loosen the shoulder pads by lifting up the ends of the shoulder pad slide buckles, release the waist pad by
pressing the release button in center of waist pad buckle, and remove the unit from your back.
NOTE
Failure to release the tension on the shoulder pads before removing the respirator may cause premature
wear or damage to the pads and/or respirator assembly.
8 Proceed in accordance with the requirements of your respiratory protection program for service of the respirator,
including the following:
•
Replace the cylinder with a fully charged cylinder of the correct size and configuration. See
Cylinders" on page 27.
•
Inspect the respirator according to
•
Clean the respirator according to
TIP
If the respirator is equipped with a PASS device (distress alarm), see the instructions provided with the PASS
device for details of how to turn off the unit.
related user manuals.
26
Standby" on page 31). For more information, contact 3M or your authorized 3M
"Chapter 2: Inspecting the
"Chapter 4: Cleaning & Storing the
Appendix I: Related Manuals" on page 65
Respirator" on page 5.
Respirator" on page 37.
P/N 595373-01
"Replacing Air
provides a list of
Rev C 202004