*SCBA Flashcards
The backpack is designed to transfer ___% of the load to hips
60
The backpack harness and cylinder weight approximately ____ lbs.
30.25
The air cylinder has a maximum working pressure of _____ psi
4,500
When full, the 45 min air cylinder contains ____ cubic feet of air
65.6
When full, the 60 min air cylinder contains ____ cubic feet of air
87
The air cylinders time rating is classified at a user rate of ___ liters per minute.
40 liters
The air cylinder is hydrostatically tested every ___ years
5
The department designator for newer bottles is “LFD” imprinted on the ___ inch luminescent band.
2”
The first stage regulator lowers cylinder air pressure to a nominal ___ psi
115
The relief valve on the first stage regulator activates to protect the system when the regulator pressure exceeds ___ to ___ psi.
200-225
The low pressure SCBA audible alarm activates at ____ to ____ psi.
1035-1215 psi
Once the low pressure SCBA audible alarm activates, the audible alarm will continue to sound until the air pressure drops below ___ psi
200
When the pressure drops below 50% of cylinder capacity, the HUD LED representing 1/2 cylinder capacity starts to flash, and continues to flash for a short time (approximately __ seconds) before returning to continuously lit.
20 sec
When pressure drops to 25%, the 1/4 LED on the HUD will turn ___ and begin to flash between ____ and ____ psi.
- Red
2. 1035-1215
When the pressure drops to ___% of cylinder capacity, the red 1/4 HUD LED begins to flash noticeably faster and continues flashing in this manner until air pressure drops below approximately ___ psi,at which time the display will turn off
- 10%
2. 200 psi
There are how many battery status indicators amber LEDs on the SCBA?
3
HUD
Backpack harness
PASS device
The amber LED on the Backpack and PASS device will flash once every ___ seconds to indicate a usable battery condition
10
The amber LED on the Backpack and PASS device flashes every ___ seconds to indicate a low battery condition
2
Turning the bypass knob on the second stage regulator clockwise or counterclockwise will provide a constant air flow?
Counterclockwise
On the PASS, depress the red “ALARM” button for __ to __ sec to put into full alert.
1 to 2
Lack of movement for ___ seconds will activate the staged alarm with LED lights alternating what colors?
- 20 sec
2. Green and red
After 20 seconds of no movement the “staged” PASS alarm begins. Volume then increases every __ seconds of inactivity with full alarm being reached at ___ to ___ seconds.
- 5 sec
2. 30-45 sec
The buddy breather system consists of ___ inch intermediate pressure hose with a “Y” block
39”
For the VAS button, one depression yields push to talk feature or depressing the button ___ times will yield hands free continuous use. Depressing the button ___ additional times will turn unit off.
2 and 2
