Replacing A Snap-Change Cylinder - 3M SCOTT AIR-PAK X3 PRO Operating & Maintenance Instructions

Replacing a Snap-Change Cylinder

To replace a Snap-Change cylinder
1 Disengage the cylinder retention strap by gripping the latch plate as shown in picture A in
on the end of the latch.
2 Pull both Snap-Change locks horizontally away from the pressure reducer to release the cylinder connector. See
picture B in Figure 3-17.
3 Grasp the cylinder below the retention strap and lift the cylinder free from the backframe and remove. See
picture C in Figure 3-17.
Figure 3-17 A) Disengaging the cylinder retention latch plate. B) Pulling the Snap-Change locks horizontally away from the pressure reducer. C)
Lifting the cylinder free from the backframe.
TIP
You can replace a Snap-Change cylinder with the help of an
assistant. Have your assistant stand behind you and follow steps
1-3 above. When the assistant pulls the Snap-Change locks to
release the cylinder connector, he or she must support the
cylinder to prevent it from falling.
You or your assistant can then complete the cylinder replacement
process as described in the following steps.
4 Inspect the high-pressure seal in the high-pressure inlet (see
remove the respirator from service and tag it for repair by authorized personnel.
P/N 595373-01 Rev C
A
Figure 3-18 High-pressure seal
202004
B
Figure 3-18). If the seal is damaged or missing,
High-pressure seal
REPLACING AIR CYLINDERS
Figure 3-17 and lifting
C
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