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Engineer > Pierce midmount manual > Flashcards

Pierce midmount manual Flashcards

1
Q

Abbreviations

A

CFM Cubic Feet per Minute
CZIC Command Zone Information Center
ECU Electronic Control Unit
EPU Emergency Power Unit
FT Feet
GAL Gallons
GPM Gallons Per Minute
I/O Input/Output
IN Inches
ISO International Organization for Standardization
LB Pound
MPH Miles Per Hour
NFPA National Fire Protection Association
NHTSA National Highway Traffic Safety Administration
OEM Original Equipment Manufacturer
PSI Pounds per Square Inch
PTO Power Take-Off
SAE Society of Automotive Engineers
SUS Saybolt Universal Second

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2
Q

What should be considered when mounting accessories?

A

when placed in direct contact with each other and subjected to moisture can form
a galvanic reaction leading to rapid corrosion and possible failure of the mounting, fastener, or base material. Avoid dissimilar metals

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3
Q

The standard Mid-Mount load chart allows for _______ of optional equipment to the aerial sections

A

150 pounds

Too much added
equipment may require de-rating the capacity

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4
Q

Lifteye rappelling rating

A

300 pounds

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5
Q

winch rating

A

500 pounds

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6
Q

Each person climbing on the ladder or riding the platform must use a fall arrest harness and tether that meets the
requirements of _______.

A

ANSI Z359.1

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7
Q

The aerial ladder is capable of operating at a?

A

is capable of operating on up to a degree slope, with 50 mph wind and 90 degree water stream
at 1500 gpm

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8
Q

How many sections of the ladder assembly?

A

Five-section steel lattice aerial ladder, with a safety factor of 2:1 of the rated load and a stability factor of 1-1/2:1.
Each ladder section is trussed vertically and diagonally with round steel tubing

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9
Q

Rotation motion is provided through a ______ swing bearing/spur gear

A

54-in.

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10
Q

The ladder has the capability of going ___ below horizontal to_____above horizontal

A

8 degrees below

75 degrees above

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11
Q

What restricts ladder movement when the system hydraulic pressure is not present

A

holding valve cartridges and a rotational brake

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12
Q

The turntable deck construction is with a _____ thick deck material

A

1.00-in.

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13
Q

The tower is stabilized using “level assist” front and rear stabilizers, capable of leveling the truck on a _____

A

9 degree slope

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14
Q

All controls have fail-safe manual
______

A

hydraulic overrides

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15
Q

Aerial waterway specs

A

The base of the aerial is equipped with a 5-in. water swivel, capable of 360 rotation, 8 below horizontal to 75
above horizontal. The telescoping anodized waterway is capable of 2000 gpm. A pressure relief valve is located
below the torque box. The electric aerial monitor is also capable of handling 2000 gpm. The water flow through the
aerial is monitored by the aerial microprocessor

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16
Q

The aerial is equipped with an electrical swivel with 36 collector rings, capable of operation through 360. Each
collector ring is capable of handling a _______

A

20-amp load

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17
Q

Where is the pumphouse located??

A

The pumphouse is located midship, centered in the frame, rear of the turntable

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18
Q

How wide is the body compartment

A

The 99-in.-wide body compartment

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19
Q

What does the override switch do?

A

Overrides interlocked circuits for emergency operation.

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20
Q

As an additional safety feature, power to the remote control turns off automatically _______ after the
stabilizers are last moved

A

three minutes

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21
Q

What does the DC light do?

A

Controls power to the tip and tracking lights.

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22
Q

What should be done to ensure the load is not exceeded on the lifting eyes of the basket?

A

it is essential
the lifts be made in a smooth manner, without causing the device or the load to bounce, jerk, or sway.

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23
Q

What is the intended use of the lift eye

A

The lifting eyes are intended to be used only as a single anchor for a single rescue rope. Never use a pulley or a block and tackle on the lifting eyes, as these devices may allow the weight of the load being lifted to
double and exceed the 500 lbs (225 kg) limit.

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24
Q

Which end of the rope should be anchored to the lifting eye?

A

Always anchor the working end of the rope to the lifting eye and use the boom to lift or lower the load

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25
Q

Rope and fittings used with the lifting eye should be appropriate for the load being lifted. They should comply with NFPA

A

1983; “Standard on Life Safety Rope and Equipment for Emergency Services”

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26
Q

When should the EPU be used?

A

When the main system hydraulic pump is not working

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27
Q

What will allow
for more efficient use of the EPU and will also generate less heat

A

Limiting loads and pressures

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28
Q

The position of this emergency power unit (EPU) switch is not dependent
on _____

A

other microprocessor circuits.

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29
Q

What is the CZIC and its function?

A

The function of the Command Zone Information Center (CZIC) is to communicate with both the chassis and aerial
multiplex systems to safely control the aerial and provide information to the user

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30
Q

If more than one message is active, the active messages will alternate every ___

A

two
seconds

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31
Q

Where is the time and temp displayed on the screen?

A

The time will be displayed in the upper left corner and the outside ambient temperature in the upper right corner

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32
Q

The Main Aerial screen displays:

A
  • aerial hydraulic oil temperature;
  • aerial hydraulic oil pressure;
  • aerial dimensions - ladder reach, extension, angle and height. The ladder information is approximate and for
    operator reference only
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33
Q

Stabilizer positions status

A

Status Bar/Color/Beam Position/Jack Position

Deployed/Green/Full extension/Set

Short-Jacked/Yellow/Short extension/Set

Not Set /Red /Short extension/ Not set

Stowed /Gray /Full retracted /Full retracted

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34
Q

The Aerial Operation screen displays:
* an active load chart that updates with changes in ladder position;
* status of water flow (on/off) and flow rate;
* oxygen level;
* rungs aligned indicator;
* ladder angle.
Status Bar Color Beam Position Jack Position
Deployed Green Full extension Set
Short-Jacked Yellow Short extension Set
Not Set Red Short extension Not set
Stowed Gray Full retracted Full retracted

A
  • an active load chart that updates with changes in ladder position;
  • status of water flow (on/off) and flow rate;
  • oxygen level;
  • rungs aligned indicator;
  • ladder angle.
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35
Q

Load Capacities are based on the following conditions:

A

— Apparatus is set up according to the operator’s manual and leveled to within safe operating limits.
— The ladder is fully extended and unsupported, 360 degrees continuous rotation.
— For icing conditions, refer to separate load chart in this operator’s manual

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36
Q

Verticle height and horizontal reach

A

Vertical height: 95 ft
Horizontal reach: 0 degrees = 88 ft, 6 in.
45 degrees = 63 ft, 6 in.
75 degrees = 24 ft

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37
Q

Monitor nozzle positions in GPM with degrees of elevation of -8 to 75 degrees

A

0-1500 gpm horizontal and verticle - unlimited

1501-2000 - 45 degrees horizontal

30 degrees verticle up and 45 degree verticle down

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38
Q

What near the tip can rapidly lead to an unstable condition

A

Large build ups of ice
near the tip can rapidly lead to an unstable condition

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39
Q

What is the aerial ice load chart based off of

A

The following capabilities shall be based upon continuous 360 degrees rotation and aerial at full extension
with 0.25 in. of ice buildup

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40
Q

During icy conditions, what is the aerial waterway rated for dry and charged

A

750 gpm dry

500 charged

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41
Q

What are some pre driving checks of the aerial

A

After starting engine, wait for aerial retraction circuit to function before releasing parking brake or shifting out of neutral, usually 5-10 seconds.

  • Make sure the aerial device is properly stowed.
  • Make sure the stabilizers are properly stowed for travel
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42
Q

The area where the ground pads make contact with the ground must be firm and capable of supporting how much weight
______

A

75 psi

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43
Q

What should never be done with ground pads

A

NEVER bridge across ditches, culverts, or any opening with the ground pads

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44
Q

For positioning, a corner of a building gives access to

A

two sides of the building as well as the roof.

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45
Q

What is required for unlimited aerial operation

A

Full stabilizer extension

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46
Q

Advantages of positioning unit uphill:

A
  • Extending the rear stabilizer jacks will raise the rear of the truck, thereby reducing the grade.
  • In the setup position, the front tires will still be in contact with the ground.
  • Raising the rear axle(s) off of the ground adds to the truck’s ballast weight offering greater stability.
  • The rear tires can be left on the ground if no grade correction is required, to offer more resistance to sliding.
47
Q

Disadvantages of positioning unit uphill:

A
  • With the rear tires off the ground, the truck has less resistance to sliding downhill.
  • Because of the added height, access to storage compartments is more difficult
48
Q

Advantages of positioning unit downhill:

A
  • Storage compartments are closer to the ground for easier access.
49
Q

Disadvantages of positioning unit downhill:

A
  • The stabilizer jacks cannot be extended to reduce the downhill grade without raising the front tires off the
    ground.
  • There are aerial device reach limitations when operating over the front of the truck.
50
Q

All Emergency Stop Switches must be in the UP position or

A

the aerial electronics will not
function

51
Q

The engine must be at _____ to engage the
pump

A

idle

52
Q

What happens to the automatic aerial throttle control during pump operations?

A

The automatic aerial throttle control will be deactivated and the water pump will control the engine throttle. During pump operation the engine rpm is sufficient to operate all aerial functions

53
Q

Aerial Capacity Based On Side to Side Setup Slope

A

Ground Slope. Truck Slope Capacity
10° 0° to 5.0° FULL
13° 5.1° to 8.0° HALF
>13° >8.0° ZERO

54
Q

Aerial Capacity Based On Front to Rear Setup Grade

A

Ground Grade Truck Grade Capacity
7° 0° to 5.0° FULL
10° 5.1° to 8.0° HALF
>10° >8.0° ZERO

55
Q

What happens anytime the truck tips beyond 8 degrees from level?

A

a WARNING will be displayed on the CZIC display and
all functions will be disabled. Use the override switch to safely retract and rotate back to a stable
condition

56
Q

Where to place wheel chocks on hills

A

Set the wheel chocks in place: in back of the front wheels if facing uphill; in front of the rear wheels if facing
downhill. Always place the wheel chocks where they will give the most resistance to truck movement.

Downhill side against tire and the uphill chock approximately 2 inches from tire. The
aerial is ready for operation

57
Q

The warning alarm will remain ON until the _______, which will be indicated by the green indicator lights

A

stabilizers are set

58
Q

Lower each jack until the ________

A

on ground indicator is illuminated for all stabilizers

59
Q

Level Assist will not work until all
jacks are ____

A

“Set OK

Rear tires may break contact
with the ground

60
Q

To avoid having to re-level the unit, level the ______ of the apparatus before leveling the _____

A

low side, high side

61
Q

What is the preferred set-up

A

The preferred set-up is an uphill position with the rear stabilizers supporting enough weight to remove the bulge from the rear tires. The front stabilizers should be firmly planted on the ground but leaving the front suspension compressed allowing for full aerial operation. Actual ground conditions may necessitate deviation from the preferred set-up.

62
Q

When positioning uphill?

A

raise the rear of the truck until the truck is level. Front stabilizers should be set until they are firm on ground

63
Q

When positioning downhill

A

raise the front of the truck until the truck is level. Rear stabilizers should be set until they are firm on the ground and begin to lift the truck.

64
Q

What gives the truck added resistance to sliding?

A
  • Some tires should remain in contact with the ground whenever possible. They will give added resistance to sliding
65
Q

What needs to happen to have full aerial reach over the front of the truck?

A

the front tires must remain in firm contact with the ground. Setting the truck up with the front tires off the ground will result in limited reach over the
front of the truck

66
Q

What should be done with stabilizer pins if equipped?

A

Install stabilizer jack safety pins (if equipped) keeping the handle about 1 inch from jack. If a jack settles, it must sit on the pin evenly. Install all stabilizer jack safety pins into the highest available hole on the jack

67
Q

When the front suspension is not compressed, the aerial operation is limited to within an envelope
of _______

A

72 feet parallel to the front of the truck

68
Q

If equipped with stabilizer pins, what needs to happen during short jacking

A

On the short jack side, it will be necessary to extend the beam far enough to remove the stabilizer jack safety
pin (if equipped) from its storage bracket and install it into the jack assembly

69
Q

During operation, what may affect aerial speeds?

A

During operation, activation of the water pump primer may affect operational speeds. Avoid aerial operations when priming the water pump to ensure smooth operation

70
Q

What is the primary operator responsible for?

A

This primary operator is responsible for observing all operations and warning or overriding any
potentially dangerous condition or movement of a secondary tip operator.

71
Q

During aerial operation, what should be continuously monitored?

A

During operation, continually monitor aerial loading and restrict additional loading and/or any
operation that may exceed the limits as shown on the load chart

72
Q

Do not set the aerial on the ground or roof because it could cause the ladder to

A

cause a back- bending negative load to the aerial sections

73
Q

What should you do if the aerial touches high-voltage power lines?

A

DO NOT TOUCH the truck and ground at the
same time. Depending on the situation, the operator may still be able to move the aerial away from the hazard. Use your own discretion

74
Q

When fighting fire with the aerial, never work

A

over the roof of the building. The danger of the roof
ventilating could be a serious hazard to those on the aerial.

75
Q

When making a rescue, always position the

A

tip for easy access.

76
Q

The shutoff valve on the breathing air bottle (optional) must be ____ to view the remaining air volume

A

open

77
Q

Each of the Lyfe™ accessories mounts to these brackets in the ______

A

same manner.

78
Q

Rappelling components are designed for ______

A

downward pulls only

When properly installed, each rappelling arm has a rated capacity of 300 lbs

79
Q

If additional lifting capacity is required, rings are provided under the basket and are rated at 500 lbs each. All additional weight must be _______.

A

subtracted from the platform capacity

80
Q

What is the weight rating of the NFPA firefighter load

A

250 lbs

81
Q

Lyfe Ladder notes

A

Do not climb the pinned ladder horizontal to the basket or above the top of the basket

Do not allow the pinned ladder to come in contact with a fixed surface.

The pinned ladder is not recommended for a flowing water rescue.

The pinned ladder is rated for 500 pounds.

The weight on the pinned ladder must be subtracted from the platform rated capacity

Do not flow water from platform monitor(s) while the pinned ladder is in use.

82
Q

Which ladder is the only ladder certified for this operation (lyft ladder)

A

The Duo-Safety Model 875A (19-inch) Ladder

83
Q

The LyfeHoist™ winch is used for lifting tools and supplies. It is NOT ______

A

rated for any type of human support or
transportation.

84
Q

What is true about the straps during the LyfeSupport™ Rescue Basket Option Setup Procedure

A

The belt straps must pass through the side openings on the rescue basket.
* The belt straps must be latched to each other straight across the basket.
* The belt straps must be properly tensioned to prevent basket movement.

Make sure each belt strap is fastened through the holes at each end of the LyfeSupport™ rescue basket arm

85
Q

To avoid equipment damage during road travel, the following precautions must be observed.

A
  • DO NOT use the aerial manual override control levers in conjunction with the emergency pump to
    stow the aerial. This will apply a greater load then intended to the boom support area. Depending
    on set up terrain, this action could also cause an undesired twist in the aerial device.
  • DO NOT use the stabilizer manual override control levers in conjunction with the emergency pump
    to stow the stabilizers. The aerial will not complete its stowing cycle with this control combination.
  • DO NOT use the stabilizer manual override control levers in conjunction with the main hydraulic
    pump. The aerial will not complete its stowing cycle with this control combination.
  • DO NOT use the stabilizer controls (electric toggle switches) in conjunction with the emergency
    pump. This will not provide proper boom support pressure for road travel.
    Use visual contact when stowing to confirm proper alignment.
86
Q

The aerial stowing process is not complete until the

A

stabilizer up function is activated

87
Q

__________ will shut off the hydraulic system when the correct bedding force has
been obtained

A

The Command Zone software

88
Q

AERIAL LOWERING OVERRIDE BUTTON

A

This button is used only if a lowering relief system failure causes the aerial not to lower during normal operation. Push and hold this override button, while operating either the electric or manual controls, to lower the aerial

88
Q

No automatic high idle is provided with the function of the ______

A

manual controls

88
Q

Any time that an override or manual control is used, _______ are overridden. The operator must be absolutely sure that all safety operating parameters are being met

A

ALL safety systems

88
Q

When lowering the aerial with the aerial lowering override button depressed, do not allow the aerial to ______

A

apply any downward force into the boom support. Damage to the aerial may occur.

89
Q

EMERGENCY STOP PTO BYPASS SWITCH

A

Allows operation of the manual aerial controls when the Emergency Stop switch is depressed.

90
Q

The EPU will be activated only after the

A

desired function is selected

91
Q

If the electronic system has failed, and the manual aerial or stabilizer controls are being used, which EPU will be the only active one?

A

EPU switch at the manual stabilizer controls will be the only one active.

92
Q

Order of operation for the EPU at the turntable control console or the stabilizer remote control

A

At the turntable control console or the stabilizer remote control, hold the EPU switch in the ON position, then
activate the desired function.

93
Q

Order of operation at the At the manual stabilizer control station

A

The proper sequence of operation is to activate the desired function, then place the EPU switch in the
ON position until the operation is complete, then release the switch before returning the manual control handle
to the neutral position

94
Q

Oil will continue to circulate in the load sense circuit of the hydraulic system when the Emergency Stop Button is depressed. Because of this constant bypass pressure, it may be possible in some circumstances to

A

rotate the aerial device using the manual controls, even though the button is
depressed

95
Q

What happens to hydraulic oil flow when the emergency stop is activated?

A

Hydraulic oil flow will be blocked
from all aerial functions and all electrical controls will be inoperative

96
Q

To restore hydraulic functions only with the emergency stop button depressed, the operator should

A

leave the Emergency Stop switch depressed and hold the Turntable Emergency
Stop Bypass switch. Operate the aerial device using the manual controls.

97
Q

During freezing conditions it is best to
maintain water flow while

A

extending or retracting the aerial

98
Q

When
operation is necessary in extreme cold temperatures, use the following precautions

A
  1. Continued use of the aerial functions will circulate the oil, delaying the ambient temperature cooling effect.
  2. Slow, attentive operation after a period of non-use will be less harmful to the device and may allow the operator
    time to react to potential problems.
  3. Continually monitor the hydraulic oil pressure gauge to warn of excessively high pressures that are building
    during the operation of a function.
  4. Pay particular attention to electric cables and hoses that are running up the aerial sections. These will become
    stiff and want to take a set, causing them to track improperly.
  5. The recommended minimum start-up temperature for the hydraulic system will vary according to the viscosity
    grade class oil that is installed in your aerial. A label located on the hydraulic reservoir indicates the grade of oil
    that is installed in your unit.
  6. During cold-weather periods, monitor the hydraulic oil temperature. If it falls slightly below the recommended
    operating range, the function speed may diminish. The continuous running of an aerial function will help to warm
    the oil. (See “Hydraulic Oil Recommendations” on page 4-1., at the beginning of this maintenance section to
    determine the temperature range of hydraulic oils used in Pierce aerial units.)
99
Q

What is the hydraulic oil operating range

A

The operating range is
based on a viscosity range from 1000-80 SUS

100
Q

How do you verify the operation of the neutral safety interlock

A

This is checked by shifting the
transmission into drive or reverse—the PTO should disengage in both gears

101
Q

What needs to happen in order to check the hydraulic oil

A

The aerial must be cradled with all stabilizers in the stowed position to
obtain a proper oil reading

102
Q

How to check the aerial interlock?

A

With the stabilizers stowed, try to operate the aerial up function using the turntable
control console controls. If there is no aerial movement, or increase on the system
pressure gauge, the interlock is functioning properly

103
Q

What are stabilizer pads?

A

These
are the feet attached to the bottom of the jack beams on which the stabilizers sit

104
Q

What should be checked Every 25 hours of aerial operation or quarterly (whichever occurs first)

A

1 Electro-Hydraulic Swivel Check the desiccator plug indicator(s) on the swivel. If the center of the indicator is
pink, replace the desiccator plug.

2 Rotation Bearing Seals Inspect the main rotation bearing for missing, damaged, or deteriorated seals.
Promptly replace as needed

105
Q

A label located on the hydraulic oil reservoir indicates

A

the grade of oil installed in your unit

106
Q

What is an Extreme Low-Temperature Concern?

A

Maintain only a thin film of low melting point grease on the ladder section guide pad areas and on the rotation gear/
pinion. Allowing a buildup of heavy grease will degrade the aerial operation

107
Q

What should not be used on the aerial cables?

A

DO NOT use solvents on the cables. Using solvent on the cables will
remove the internal lubrication from the cables. Use only a “penetrating” cable lubricant when lubricating the
cables

108
Q

Salt-Air Environment Concerns

A
  • Touch up painted areas showing signs of rust to prevent further corrosion.
  • Clean and lubricate unpainted areas such as pins and cables. Use only a “penetrating” cable lubricant when
    lubricating the cables
109
Q

As recommended by the planetary gear box manufacturer, all planetaries (rotation gear boxes) are filled and shipped
with_______

A

“API GL5 80W90 gear oil”

110
Q

LADDER SECTION GUIDE PADS AND SLIDING SURFACES lubrication

A

(Brush on outside and bottom of fly and mid
sections and inside of base and mid sections where guide pads rub.)

Engineer (31 decks)

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