Transfilling Between Scbas - MSA G1 SCBA Operating Manual

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.
NOTE: If the secondary air supply does not have a sufficient volume of air, the SCBA cylinder will not
reach full service pressure.

13.3 Transfilling between SCBAs

The SCBA with the higher pressure reading is the donor. The SCBA with the lower pressure is the
receiver. Transfilling between users of SCBAs should be performed only during life-threatening emer-
gencies or simulated training exercises. Both donor and receiver must return to fresh air immediately
following the procedure.
WARNING!
DO NOT transfill if the donor's primary low pressure warning device is sounding or HUD/control
module are flashing red. Failure to follow this warning can result in shorter escape time to return to
fresh air, causing serious personal injury or death.
WARNING!
For 5500 psig SCBA, the RIC UAC fitting can only receive air. 5500 psig SCBA cannot donate air and
therefore cannot be used for transfilling operations. Do not attempt to donate air with a 5500 psig
SCBA. Failure to follow this warning can result in serious injury or death.
The low pressure warning device begins alarming and HUD/control module begins flashing red to indi-
cate that the pressure in the cylinder has been reduced to 35% of its rated working pressure.
Remaining service time must be used for escape to fresh air. If the donor's primary low pressure
warning device begins ringing or HUD/control module begins flashing red during transfilling, the donor
should disconnect and preserve his escape time.
(3) Compare the cylinder pressure gauge and the remote pressure gauge to
the secondary air supply pressure gauge reading.
a)If the readings are the same, pressure is equal.
(4) To disconnect the Quick-Fill hose after filling, pull the gray sleeve back.
a)The female fitting on the hose and the UAC fitting will separate.
b)A hiss or pop may be heard as the fittings separate and the high pres-
sure air is sealed off.
c)Listen for any leaks from the UAC fitting.
(5) Immediately install the dust cover on the UAC fitting.
(6) The SCBA cylinder is ready for service if the cylinder pressure gauge
needle is on the appropriate color band.
G1 SCBA
UAC Fitting
US
71