SCBA Manual Chapter 2 pp 13-22 - Sheet1 Flashcards Preview

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Flashcards in SCBA Manual Chapter 2 pp 13-22 - Sheet1 Deck (76)
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1
From SCBA:

What side of the SCBA backframe is the pressure reducer assembly located?

Left

2
From SCBA:

The redundant dual path reducing system, automatic transfer valve and over pressure relief valve are all components of what?

Pressure Reducer Assembly

3
From SCBA:

After air leaves the SCBA supply cylinder through the cylinder valve, it then travels into?

High pressure hose

4
From SCBA:

Air from the SCBA travels through the high pressure hose and then enters?

Pressure Reducing Regulator

5
From SCBA:

Air enters the pressure reducing regulator at what PSI?

Existing Cylinder Pressure

6
From SCBA:

The primary reducing circuit reduces the air pressure to what PSI?

100psi

7
From SCBA:

After the air pressure is reduced by the primary reducing circuit, air then travels into ___________ ____________ ____________ and then into ___________ __________ __________?

Low Pressure Hose and then into Mask Mounted Regulator

8
From SCBA:

When cylinder air pressure falls between ______ and ______psi a transfer valve opens allowing the secondary pressure reducing circuit to function

1000 & 1200

9
From SCBA:

When the primary pressure reducing circuit fails in the _________ position, a transfer valve opens allowing the secondary pressure reducing circuit to function.

Closed

10
From SCBA:

The secondary pressure reducing circuit reduces cylinder air pressure going to mask-mounted regulator to _______psi.

150psi

11
From SCBA:

The extra 50psi that's supplied by the secondary pressure reducing circuit is used to activate what?

Vibralert Alarm

12
From SCBA:

The ________ _________ is an audible & tactile end of service life indicator.

Vibralert Alarm

13
From SCBA:

The outlet manifold of the pressure reducer assembly is the attachment point for the _______ pressure hose.

Low

14
From SCBA:

The outlet manifold of pressure reducer assembly is the attachment point for the low pressure hose and contains a resettable over pressure relief valve set at ______psi.

225psi

15
From SCBA:

The over pressure relief valve vents excess pressure to the ___________ to protect the low pressure hose and breathing regulator from pressure over 225psi should the primary reducing circuit fail in the open position.

Atmosphere

16
From SCBA:

When the relief valve on the outlet manifold opens, the air pressure supplied to the low pressure hose and breathing regulaotr will be between _______-_______psi.

185-225psi

17
From SCBA:

The Vibralert alarm will activate when less than __________% of the full pressure remains in the air supply cylinder.

0.25

18
From SCBA:

In the event the primary reducing valve fails in the ________ position and the secondary reducing circuit opens, air at over 225psi to enter the outlet manifold, the relief valve on the outlet manifold will open.

Open

19
From SCBA:

The air saver switch, spray bar and spring clip are a few of the compnents that make up the?

E-Z Flo Breathing Regulator

20
From SCBA:

The _________ __________ ___________reduces the air pressure supplied by the pressure reducer assembly before air enters the face piece.

Mask-mounted Breathing Regulator

21
From SCBA:

With proper seal, the Mask-mounted Breathing Regulator produces a pressure of approximately ______ to ______psi above atmospheric pressure inside the facepiece.

.036 to .054psi

22
From SCBA:

When the user breathes out, the integral exhalation valve vents the exhaled air, while maintaining _________ __________ inside the properly fitted facepiece.

Positive Pressure

23
From SCBA:

Inhaling sharply into your mask, with the cylinder valve on, will release the _________ _________ ___________ and allow air to flow.

Air Saver Switch

24
From SCBA:

The component of the mask that helps keep the lens free of condensation is called the what?

Spray Bar

25
From SCBA:

The Spray Bar is comprised of _________ holes and is located in the upper part of the regulator assembly.

Nine (9)

26
From SCBA:

The ______ _________ is located on the right side of the regulator assembly and is used to secure the facepiece to the regulator.

Spring Clip

27
From SCBA:

When opening the purge valve, air is allowed to enter the facepiece through the _______ _________.

Spray Bar

28
From SCBA:

When the purge valve is in the off position, the indicator knob shall be pointed in what position?

Twelve-O'clock

29
From SCBA:

Which component of the facepiece and mask-mounted breathing regulator may be used momentarily to de-fog the mask?

Purge Valve

30
From SCBA:

Leaving the purge valve open for one minute, how many cubic feet of air will be consumed?

4.4 Cubic feet