52
Cylinders
GB
G1 Integrated SCBA System
11.2 Installing Quick Connect Adapter (alphaCLICK 2) to Cylinder
(1) Use only a fully charged cylinder and inspect the external thread of the cylinder valve to
ensure they are not damaged and free of dirt and debris.
The bore of the cylinder valve must be undamaged and free from dirt and debris.
If the cylinder valve is damaged, remove from service and return it to a MSA trained or certi-
fied repair technician.
(2) Inspect the internal threads and nipple of the male adaptor to ensure it is not damaged and
free of dirt and debris.
Ensure that the O-ring is installed on the nipple and free of dirt and debris.
(3) Thread the adaptor with a specific torque of 20-30 Nm onto the cylinder valve.
11.3 Changing the Cylinder
Removing the Cylinder
(1) Lay the backplate of the SCBA horizontal with cylinder facing up.
(2) Ensure there is no pressure in the system before replacing a cylinder.
(3) Close the cylinder valve.
(4) Press purge until air no longer discharges from the LGDV.
(5) Disconnect the handwheel assembly:
Threaded connect:
Unthread handwheel from cylinder valve assembly.
alphaCLICK 2 connect:
Turn the handwheel on the coupling side first clockwise, when the stop is reached, push down-
wards in the direction of the pressure reducer.
The cylinder adaptor releases from the alphaCLICK 2 coupling.
(6) Hinge up cylinder buckle at cylinder strap and thus loosen the strap.
(7) Lift cylinder at the valve and pull out of cylinder strap.
(8) Close high pressure connection cylinder valve with protection cap (not required for
alphaCLICK 2).
Attaching the Cylinder
alphaCLICK 2 connect:
If necessary, thread the alphaCLICK 2 cylinder adaptor with a specific torque of 20-30 Nm into
the cylinder valve.
(9) Lay the backplate of the SCBA horizontal with cylinder facing up.
(10) Slide the fully charged cylinder into the carrier, with cylinder valve gauge facing away from
the backplate.
(11) Open cylinder buckle on the cylinder strap eliminating any tension and extend the strap.
(12) Push compressed air cylinder through the cylinder strap with the cylinder valve toward the
pressure reducer, so that it lies on the central support.
When exchanging compressed air cylinders of the same diameter, only the cylinder
buckle needs be opened.
