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Training Bulletins > TB 069 - Maxi-Force Air Bag System > Flashcards

TB 069 - Maxi-Force Air Bag System Flashcards

1
Q

The standard Maxi-Force Air Bag system in use by the Los Angeles City Fire Department is comprised of the following

A

A. One dual “dead man” safety relief and control valve

B. One high pressure regulator

C. Three in line safety relief valves

D. Four air hoses (red, yellow, green and blue)

E. Three air lifting bags (2 - 22 ton, 1 - 12 ton)

F. One air supply adapter

G. Cribbing

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2
Q

Dual “Dead Man” Safety Relief and Control Valve

Pre-set at the factory at

A

118 psi

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3
Q

High Pressure Regulator is attached to a standard __ or __ minute SCBA bottle.

A

30(now 45) or 60

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4
Q

High pressure regulator; Adjust pressure between ___-___ psi, to provide ___ psi working pressure at the dual safety relief and control valve.

A

125-135

118

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5
Q

High pressure regulator:

When attaching to the SCBA bottle, the last __ turn should be accomplished by turning both the threaded inlet fitting and regulator together until ____ ____.

A

1/4

Hand tight

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6
Q

allow the air bags to remain inflated after the dual “dead man” safety relief and control valve is disconnected.

A

In-line safety relief valve

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7
Q

Safety relief valves will:

  1. Relieve if pressure exceeds
A

135 psi

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8
Q

The operator can use more than ___ bags with one dual safety relief and control valve. The in-line relief valve can be ____ and the dual control valve _______ without a loss of air through the hose lines.

A

Two

Closed

Disconnected

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9
Q

Each of the air hoses is equipped with a male and female “___-_____” fitting and ____ ____ ring.

A

Quick disconnect fitting

Safety lock ring

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10
Q

Each hose is __ feet long, with a working pressure of ___ psi.

A

16

250

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11
Q

Air Lifting Bags Air bags are of similar construction to a modern ______ _____ _____. Air bags are constructed of ______ ______ compounds encasing _____ cords, and are extremely durable and resistant to damage.

A

Automotive tubeless tire

Neoprene rubber

Kevlar

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12
Q

Each side of the air bag has a non-slip surface marked with an “__” which will help to center the bag under the load.

A

X

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13
Q

The adapter allows for an auxiliary air source to be used such as:

A
  • Apparatus On-Board Air System

- Portable Air Compressor

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14
Q

The adapter can also be used to?

A

Extend a hose length (i.e. air chisel hose to air bag hose )

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15
Q

The cribbing provided should be considered a minimum:

“X“X_’ (4)

  • __“X__” _____ (2)
  • ____ (4)
A

4’’x6’’x2’
24’’x24’’ plywood

Wedges

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16
Q

Placing the in-line safety relief valve at the ___ should be avoided as this can make connecting and disconnecting the supply hose difficult and dangerous.:

A

Bag

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17
Q

Do not inflate the bag over ___ psi without a load.

A

30

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18
Q

Always crib as object is raised (rule of thumb is ___ an inch, ___ an inch).

A

Lift

Crib

19
Q

Stacked two bag lift

  • The _____ bag shall always be on the bottom.
A

Larger

20
Q

Air hoses should be connected to the bags so that the connection points are facing

A

Different directions

21
Q

Stacked two bag lift

Inflate one bag at a time as follows: Partially inflate _____ bag first, then partially inflate ___ bag. ______ this sequence until desired height or safe maximum inflation is achieved.

A

Bottom
Top

Alternate

22
Q

Stacked two bag lift:

To deflate the bags, first partially deflate the ___ bag then partially deflate the ____ bag, continue this sequence until operation is complete.

A

Top

Lower

23
Q

Never inflate air bags against objects hotter than

A

220 degrees

24
Q

When stabilizing a vehicle, chock a minimum of one ___ ____ and one ____ ____ on each side.

A

Front wheel

Rear wheel

25
Q

Thoroughly inspect the maxi-force air bag after

A

Each use

26
Q

Wash bag with

A

Soap and water

27
Q

Small cuts on the neoprene surface can be repaired with

A

Rubber cement

28
Q

For larger cuts, holes or abrasions, tag with F-175 and send to _____ ___ _____ for repair or replace.

A

Supply and maintenance

29
Q

To leak test a bag:
Inflate bag to __ psi. Place inflated bag into water or a soap-solution. If _____ appear, this indicates a leak. If bag leaks, it must be forwarded to the _____ ___ ____ Division for repair. Disregard bubbles around the ____ ____, it will not affect the safe operation of the bag

A

30 psi

Bubbles

Supply and maintenance

Bag inlet

30
Q

Hoses

  • Keep the _____ clean and dry.
  • Inspect for damage ___ ___ ____.
A

Couplings

After each use

31
Q

Dual Safety Relief and Control Valve

If a safety relief valve is held open by a foreign object and it is not possible to blow it out by activating the deflating devise, then the complete ____ part of the valve must be taken off, and the foreign object removed.

A

Upper

32
Q

The following specifications are for two sizes of air bags of the Maxi-Force Air Bag System:

A

K-12

K-22

33
Q
  1. K-12 (Kevlar) Air Bag
    a. Size: __“X__“X__”
    b. Maximum Lifting Capacity: ___ tons at ___ psi

NOTE
This maximum lifting capacity is from _” to _”.: The higher the lift, the less lifting capacity.

A

7/8’’x15’’x15’’

12 tons at 118psi

0’’-1’’

34
Q

K-12 max lifting height

A

8’’

35
Q

K-12 max air capacity

A

3.0 cubic feet of air

36
Q

K-12 weight

A

6lbs

37
Q

K-12 inflation time

A

3 seconds

38
Q

K-12 bag is tested at___ psi and burst tested at ____psi

A

236psi

700 psi

39
Q

K-22 (Kevlar) Air Bags

a. Size: ___“X__“X__”
b. Maximum Lifting Capacity: ___ Tons at __ PSI

A

7/8’’x20’’x20’’

21.8 tons
118psi

40
Q

K-22 maximum lifting height

A

10’’

41
Q

K-22 maximum air capacity

A

7.3 cubic feet of air

42
Q

K-22 weight

A

12lbs

43
Q

K-22 inflation time

A

7 secs

44
Q

K-22 bags are tested at ____psi and burst tested at ___psi

A

236psi

600 psi

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