MSA G1 SCBA

Question 1

What are the 10 main components of your SCBA?

Answer 1

1. Face piece
2. HUD
3. Regulator w Bypass
4. Speaker Module
5. Harness and Carrier Assembly
6. Cylinder w Gauge and Valve
7. Pressure Reducer w UAC and Low Air Warning Bell
8. Power Module
9. Control Module w TIC
10. Quick Fill Pouch

Question 2

What is the purpose of Function A Test?

Answer 2

To see that the face piece and regulator can hold negative pressure.

Question 3

What is the purpose of Function B test?

Answer 3

To check the speaker and regulator function.

Question 4

What is the purpose of Function C Test?

Answer 4

To check Control Module, Power Module, HUD, and Primary Low Pressure Warning Device.

Question 5

What are the 3 Pre-Entry Checks?

Answer 5

Tug Test, By-Pass, Negative Pressure

Question 6

What is the minimum pressure your cylinder should have at the beginning of your shift?

Answer 6

4000 PSI

Question 7

What pressure range is 4 green lights on the HUD?

Answer 7

75-100%

Question 8

What pressure range is 3 green lights on the HUD?

Answer 8

50-74%

Question 9

What pressure range is 2 yellow flashing lights on the HUD?

Answer 9

36-49%

Question 10

What pressure range is 1 Red Flashing light on the HUD?

Answer 10

0-35%

Question 11

At what pressure does the low warning bell engage?

Answer 11

1575 psi

Question 12

At what pressure does the low pressure warning bell cease operation?

Answer 12

200 psi

Question 13

The pressure reducer brings air psi to…

Answer 13

102-113 psi

Question 14

What is the litre volume of a 45 minute psi cylinder?

Answer 14

1870 litres

Question 15

What is the percentage of oxygen in normal air? IFSTA p203

Answer 15

19.5% but can range to 21%

19.5 would be the minimum.
Above 23 would be oxygen rich.

Question 16

What pressure is (psi) the half air alarm (49%)?

Answer 16

2205 psi

Question 17

What does the acronym IDLH stand for?

Answer 17

Immediately dangerous to life and health

Question 18

The yellow buddy light indicates what?

Answer 18

1/2 air

Question 19

The lights on the right side of the HUD indicate what?

Answer 19

Air level indicator

Question 20

The primary low pressure warning will alarm (bell goes on) if the cylinder is below what psi and percentage…

Answer 20

1575 psi or 35%

Question 21

The PASS device goes into full alarm after how many seconds of motionless activity?

Answer 21

30 seconds

Question 22

What side is the quick fill pouch on?

Answer 22

Right side

Question 23

During a negative pressure test, negative pressure should be hold for how many seconds?

Answer 23

10 seconds

Question 24

What is the first step in donning the SCBA?

Answer 24

Slide the left arm through the left shoulder strap

Question 25

The pressure reducer warning signal (bell turns off) will stop if the cylinder pressure goes below:

Answer 25

200 psi

Question 26

Two yellow lights on the HUD indicate what pressure reading?

Answer 26

36%-49% or known as half air

Question 27

The red back light on the control module indicates system pressure is below what percentage and psi…

Answer 27

35% or 1575 psi

Question 28

To reset the full PASS alarm you must...

Answer 28

Double press either of the green buttons on the control module.

Question 29

The battery is housed in....

Answer 29

The middle of the back plate.

Question 30

The battery should be removed using the...

Answer 30

Battery removal tool

Question 31

During emergency RIT procedures, the RIT cylinder should be opened...

Answer 31

Prior to entry with hand wheel fully open

Question 32

After attaching the RIT airline to a downed firefighter you should...

Answer 32

Do a tug test

Question 33

During self rescue the first step when crawling through a wall is...

Answer 33

Ensure there is floor on the otherside

Question 34

What must you have for a proper function test...

Answer 34

A full (4000 psi) cylinder of air

Question 35

What are all the colors of buddy lights in the HUD?

Answer 35

Green, Orange, Red, Blue.

Question 36

When testing the control module, lay the control module down flat to check the white light illuminating the pressure gauge and to check the graphical display and analog gauge are within a _____% range or ______ psi with the cylinder pressure.

Answer 36

5% or 225psi

Question 37

The regulator has two buttons, a top and bottom button. The top button houses an LED buddy light. What colors does this buddy light flash and what do they mean?

Answer 37

The top button houses an LED buddy light. Yellow=1/2 air and Red=low air or the PASS.