MSA G1 SCBA Operating Manual page 72

If the donor's primary low pressure warning device is not sounding and HUD/control module are not
flashing and there is sufficient air to transfill to a receiver, (greater than 1000 psi for 2216 psi SCBAs
and greater than 2000 psi for 4500 psi SCBAs), follow these steps:
(1)
(2)
(3)
(4)
WARNING!
If serious leakage is noticed from either of the two female fittings, or anywhere along the hose, discon-
nect the female fittings and return to fresh air immediately. Misuse can result in serious injury or death.
(5)
(6)
Remove the emergency transfill hose from its protective pouch.
Remove the rubber dust cover from both female fittings on the transfill
hose.
Remove the rubber dust cover from the UAC fittings on both SCBA.
Push the female fittings on to the male fittings until they click in place.
a)Pull on the hose to be sure the connections are secure.
Filling immediately begins when both female fittings are fully engaged
with the UAC fittings.
After approximately 60 seconds, pressure between the SCBA cylinders
will be equal.
Disconnect the transfill hose from the SCBA by pulling the gray sleeve
back on both ends.
a)The hose fittings and the UAC fittings will separate.
A hiss or pop may be heard as the fittings separate and the high pres-
sure air is sealed off.
Immediately install the dust cover on the UAC fitting. The dust cover
prevents dirt, water, and debris from entering the fitting, and acts as a
redundant seal.
G1 SCBA
UAC Fitting
US
72