3M SCOTT AIR-PAK X3 PRO, Operating & Maintenance Instructions, Page: 41 / 84

USING THE RESPIRATOR
P/N 595373-01 Rev C 202004 25
Using the Respirator
Use the respirator in accordance with your respiratory protection program.
•
Plan every entry into a contaminated or unknown atmosphere to ensure that there is sufficient air supply to enter,
perform the required tasks, and return to a safe breathing area.
•
Check the remote pressure gauge on the shoulder harness periodically to monitor the rate of air consumption
and the remaining air supply.
•
Always allow sufficient air for egress from the contaminated area.
•
If you attempt re-entry after the air has been partially consumed (i.e., the cylinder is less than full), be certain that
the remaining air will be sufficient to perform the required tasks and return to safety.
•
If any end-of-service indicator alarm actuates (the Vibralert end-of-service indicator alarm , the HUD rapidly
flashing red light) either individually or together, leave the area requiring respiratory protection immediately.
•
After you leave the area, do the following:
•
When you are in a safe area where you are certain that respiratory protection is not required, terminate the
use of the respirator. See “ Shutting Off the Respirator ” on page 25.
•
Determine the cause of the alarm.
– If the end-of-service time alarm is actuated by a depleted air supply cylinder, replace the cylinder in
accordance with “ Replacing Air Cylinders ” on page 27. You can resume use of the respirator with a fully
charged breathing air cylinder installed.
– If the end-of-service indicator alarm has actuated for an unknown reason, do not resume use of the
respirator . Remove the respirator from service and tag it for repair by authorized personnel.
Shutting Off the Respirator
To remove (doff) the facepiece and terminate respiratory protection
1 Leave contaminated area or be certain that respiratory protection is no longer required.
2 Loosen the temple straps slightly by lifting the upper facepiece buckles away from the head. The facepiece
buckles have U-shaped release lever extensions.
3 Loosen the neck straps by lifting the lower facepiece buckles away from your head while lifting the facepiece
away from your face.
4 Remove the facepiece by pulling it up and over your head.
5 To stop the flow of air from the facepiece, fully engage the air-saver mechanism on the regulator and release.
TIP
For additional information, see ANSI/ASSP Z88.2 , current edition , American National Standard Practices
for Respiratory Protection . If you use the respirator for firefighting, see also NFPA Standard 1500,
Standard on Fire Department Occupational Safety, Health, and Wellness Program .
NOTE
Failure to release the tension on the neck straps before removing the facepiece may cause premature wear
or damage to the straps and/or facepiece assembly.