c)
Then push the “OFF'' button of the
Second Stage Regulator
(Figure 1 & Figure 7).
Figure 7 Closing the air supply by the ''OFF'' button of the second stage regulator
d)
Open the
Cylinder Valve
until you hear the whistle sound and see the gauge indication stabilizing (Figure 1 & Figure 8). The indication must always be equal or more than 80% of
the rated filling pressure (300bar),so be between 240-300bar. The indication might vary ±10% depending on the environmental Temperature. Close the
Cylinder Valve
. Keep
checking the pressure gauge for 60 sec. If after 60sec the pressure drop is less or equal to 20dar, this means that the whole system is leak-tight. If the pressure drop in 60sec is more
than 20bar, send the SCBA for service to a LALIZAS authorized Service Station.
Figure 8 Opening the cylinder valve
e)
After checking leak-tightness bring the
Second Stage Regulator
in mouth and inhale to check the operability of the “on demand'' valve (Figure 9). After inhaling the air pressure
will drop causing the whistle to sound again. Check the pressure gauge indication to be approximately 50 bar when the whistle sounds (Figure 9).
Figure 9 ''ON DEMAND'' valve operability check
Figure 6 Detaching the Second Stage Regulator from the Face Piece
1.6 Operation of Self-Contained Breathing Apparatus
1.6.1 Checks prior to Use
Every Self-Contained Breathing Apparatus is packed in ready for use condition. However, a brief check is strongly recommended, to ensure the good operating condition of the
equipment before use. To conduct this test, the next steps are to be followed:
a)
Remove the Self-Contained Breathing Apparatus from the suitcase.
b)
Push the lock button of the face piece and detach the
Second Stage Regulator
from the
Face Piece
( Figure 4 & Figure 6).
LALIZAS
