Honeywell Titan SCBA Training Manual page 30

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C. SCBA Function Test
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flashing LED lights on the Pass and the backpack. The low air whistle should
sound briefly as the system pressurizes.
Close the air cylinder valve.
Observe the gauge/alarm for 10 seconds. Significant needle movement from
the air pressure loss indicates a leak. The SCBA shall be sent to the BA Shops
for repair.
Slightly open the bypass valve and allow the system pressure to bleed down
stopping at 3/4, 1/2, 1/3. the indicator lights on the HUD take a few seconds to
respond.
The audible low air whistle should begin to sound at approximately the 1/3 full
mark on the pressure gauge. The red low air warning lights on the second stage
regulator and backpack should blink.
The audible whistle alarm should continue until the air is almost depleted. Bleed
all the residual air out of the system and close the bypass valve.
Allow the PASS to cycle to full alert. The LED lights should flash green and red
as the alert tone increases in volume. The LED lights should flash red at full
alert. The LED lights on the backpack should flash at the same rate and color as
the PASS.
Manually click the on/off button twice to turn the PASS device off.
Insure the shut-off button has been depressed and the bypass valve on the second
stage regulator is turned to the off position.
Open the cylinder valve and check that the cylinder valve gauge and gauge on the
PASS device both indicate a pressure of 4000 psi or more.
Don facepiece and check for a proper seal.
Attach the second stage regulator to the facepiece and inhale. The regulator
should activate automatically delivering an acceptable airflow without excessive
breathing effort, free flow or fluttering.
Slowly open the bypass valve. A steady flow of air should enter the facepiece.
Close the bypass valve and depress the shut-off button on the second stage regu-
lator. Airflow should stop.
Push the manual override button. A small burst of air should enter the facepiece
and the regulator should activate.
Depress the shutoff button and remove the facepiece. Close the cylinder valve
and bleed all the residual air from the system using the bypass valve. Manually
click the on/off button twice to turn the PASS device off.
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