3M SCOTT AIR-PAK X3 PRO Operating & Maintenance Instructions page 27

5 Verify that the quick-disconnect operates properly. Breathing regulators equipped with a quick disconnect use a
pull-back sleeve coupling.
a While pushing the plug D into the socket, pull the locking sleeve E back toward the guard. The plug D will
separate. See Figure
Figure 2-7 Testing the quick-disconnect
b To reconnect, align the HUD plug with the mating connector. A collar on the female coupling prevents
misalignment of the connectors. Verify that the HUD plug is properly aligned and fitted into the mating socket.
– Push plug D into the socket until the locking sleeve E pops forward.
– Test for proper engagement by tugging on the coupling.
6 If the regulator is not attached to the facepiece, proceed as follows:
a Align the regulator outlet port with the facepiece port. (The red purge valve on the regulator will be in the 12
o'clock position). Insert the regulator into the facepiece port.
b Rotate the regulator counterclockwise (as viewed from inside of facepiece) until the red purge valve knob is
on the left side of the facepiece. The lock tab of the E-Z Flo+ regulator or the latch on the E-Z Flo C5
regulator will lock into the facepiece retainer with a click. When the lock tab or latch is properly engaged,
the regulator will not rotate.
7 Verify that a full cylinder is properly installed in the backframe and that the reducer hose coupling is
hand-tightened to the cylinder valve outlet.
NOTE
Do not use tools to tighten the hose couping, Over-tightening the hose coupling may damage the gasket
seal.
If you do not find any damage to the respirator, proceed to
P/N 595373-01 Rev C
2-7.
202004
INSPECTING THE RESPIRATOR COMPONENTS
"Performing Operational Testing" on page 12.
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