OPERATING THE RESPIRATOR
30
5 Replace with a fully charged cylinder and valve assembly of the appropriate pressure rating. Verify that the
replacement cylinder has a protective cap installed on the valve’s CGA fill-fitting and that the cylinder connector
is clean and free of dirt and debris. See picture A in Figure 3-19.
6 Slide the top of the cylinder up under the cylinder retention strap. Orient the Snap-Change connector over the
high-pressure inlet of the pressure reducer.
7 Push the cylinder connector into the pressure reducer firmly until both latch assemblies click and lock. Push
directly on the cylinder valve to engage. See picture B in Figure 3-19.
Figure 3-19 A) Verifying that the cylinder connector is clean. B) Pushing the cylinder into place on the backframe.
8 Secure the cylinder in place by pushing the latch toward the backframe to lock the cylinder latch.
9 Continue use of the respirator.
If you terminate use of the respirator, clean and inspect it as described in “Chapter 4: Cleaning & Storing the Res-
pirator” on page 37 and “Chapter 2: Inspecting the Respirator” on page 5.
Special Use Situations
Resuming Use of the Respirator
If you must resume use of the respirator, proceed as follows:
• Never resume use of a respirator where an end-of-service indicator alarm was activated without first determining
and correcting the reason for the end-of-service indicator alarm.
• Make sure that the remaining air supply in the cylinder is sufficient to accomplish the purpose for resuming
respirator use. As a general rule, replace partially depleted cylinders with full cylinders before resuming respirator
use.
• To resume use of the respirator, repeat the respirator and facepiece donning procedures as defined in “Donning
the Respirator” on page 18 and “Donning the Facepiece” on page 19.
• When you have finished using the respirator, leave contaminated area or be certain that respiratory protection is
no longer required and proceed with the steps described in “Shutting Off the Respirator” on page 25.
Verify that the cylinder
connector is clean and free of
debris
Protective cap on CGA fill
fitting
Push straight down
on the cylinder valve
to engage
A
B
P/N 595373-01 Rev C 202004
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