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Engineer Exam > Pierce Velocity Manual > Flashcards

Pierce Velocity Manual Flashcards

1
Q

Gross Vehicle Weight

A

25,500 lbs (23.25 tons)

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2
Q

Vehicle Height

A

11’3”

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3
Q

Vehicle Length

A

31’ 9.56”

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4
Q

Wheelbase

A

183”

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5
Q

Tire Pressure

A

Tire Pressure Dual 120 psi
* Tire Pressure Single 100 psi

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6
Q

Engine

A

Cummins 500 hp

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7
Q

Pump

A

Pierce PUC 1500 gpm

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8
Q

Water Tank

A

500 Gallon

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9
Q

Foam Tank

A

20 Gallon

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10
Q

Fuel Tank

A

65 Gallon

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11
Q

DEF Tank

A

4.5 Gallon

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12
Q

Turning Capability

A
  • The cramp angle on the front axle is 45
    degrees.
  • Curb to Curb = 27’ 8”
  • Wall to Wall = 31’ 6”
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13
Q

NFPA 1901

A

1901 requires that all equipment in cab, except for
what is needed to be used on an emergency response,
be secured in a cabinet or bracket. Use them.
* Helmet holders are provided to secure helmets and
cabinets are provided for other equipment to prevent
injury or death in a collision. Use them.
* Do not mount or store anything in the area needed by
the air bags and nothing within 4” of the officer’s knee
bag.

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14
Q

Side Roll Protection

A
  • Apparatus Accidents #2 killer
    of Firefighters, 60% involve a
    rollover.
  • 5904 and 5906 have side roll
    and front impact protection
    with pre-tensioner, seat
    retraction, side and front air
    bags.
    When the SRP sensors
    detect a roll over
    occurring the system will:
    – Retract and tighten the
    seatbelts.
    – Pull the air ride seats to
    their lowest position.
    – Deploy side curtain air
    bags from the seatback
    headrest area.
  • It will not activate for side
    impacts, rear end impacts
    or end over end impacts.
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15
Q

When a frontal or oblique collision is detected
the FIP will:

A

Retract and tighten the seatbelts.
– Pull the air ride seats to their lowest position.
– Deploy side curtain air bags from the seatback
headrest area.
– Deploy the airbag in the steering wheel.
– Deploy the airbag in front of the officer’s knees.

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16
Q

Diesel Exhaust Fluid (DEF)

A

DEF consumption is 2-3% of fuel consumption,
so will need to be refilled about every other
fuel fill.

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17
Q

Regeneration

A

Passive Regen – Can occur during normal engine
operations, driving or pumping. No action needed by
the driver.
Active Regen – The apparatus may active regen without
any action by the driver. However, when needed, driver
can assist in activating the regen by changing the ‘duty
cycle’ of the engine, i.e. switch to highway driving or
pumping conditions, or initiating a Parked Regen.

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18
Q

Automatic Active Regeneration
While Driving or Pumping

A

The apparatus may automatically initiate an active
regeneration while driving or while pumping. The
following vehicle conditions must be met:
* Sufficient accumulation of soot in the filter.
* Sufficient exhaust flow and temperature
conditions (typical pumping or driving).
* Speedometer showing 5 mph or higher vehicle
speed.
There is no need to inhibit regeneration during
pumping operations.

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19
Q

Parked Regen

A

When needed, (DPF Light On) the operator can
initiate a ‘Parked Regen’ with the following steps.
Park apparatus outside, safely off roadway, on
clean/clear surface that will not melt (not asphalt!)
with minimum 5 ft. clearance around exhaust and
away from people, or any flammable materials or
structures. Exhaust temperatures during a normal
regeneration event can get up to 1500 °F.
Caution: Do not place ladders near exhaust

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20
Q

Stationary Active Regeneration

A

Before initiating stationary regeneration (using
the regeneration switch - see next slide), the
following conditions must be met:
* Park Brake must be set, Transmission must be
in Neutral, Accelerator, and foot brake pedals
must not be pressed, Apparatus and pump
governor at idle.
* With Engine parked and running at idle, press
and hold ‘DPF REGEN’ switch for 5 seconds.
(DPF light must be illuminated to initiate parked regen)

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21
Q

High Exhaust System Temperature

A

The HEST light illuminates when exhaust is over
977°
To reduce the possibility of injury or damage, the
apparatus are equipped with an exhaust
mitigation device. The end of the
tailpipe points straight out and on the
end is a device that venturies in fresh air
and mixes it with the exhaust to lower
its temperature.

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22
Q

Parked Regen

A

Once the parked regen has completed, 20-40
minutes, engine will return to normal idle speed
and operation.
- HEST light will remain illuminated until the
exhaust temp drops back to normal (or vehicle
speed exceeds 5 mph).
- All other indicator lights should turn off.
- If DPF light remains on, attempt another regen.
- If DPF light remains on after 2nd regen, or if ‘Check
Engine’, ‘Stop Engine’ or ‘MIL’ light remain on, take
out of service.

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23
Q

Cancelling a Parked Regen

A

If it’s necessary to cancel a parked regen (such as
the need to respond to a call), the driver can press
the ‘REGEN INHIBIT’ switch. The engine should
return to idle.
Stepping on the throttle, releasing the parking
brake, putting the transmission in gear, or turning
the ignition off, will also cancel a parked regen.
* If a parked regen is cancelled, you may or may
not need to resume the regen after the
interruption is over.
* Use the indicator lights as a guide. If they are still
indicating that a regen needs to be performed,
then restart the parked regen process.
* If the indicator lights are now off, then the partial
regen was enough to clear the exhaust system at
the moment
* Only cancel a parked regen if necessary.

24
Q

Check Engine Light

A

Engine may have exceeded limits, the ECU
may have found a fault – check gauges.
Contact apparatus maintenance.

25
Q

Stop Engine Light

A

Indicates a major engine fault, serious damage
may result. Move to nearest safe location,
shut down and taken out of service.

26
Q

Malfunction Indicator light (little engine picture)

A

Malfunction Indicator Light (MIL), indicates a
fault of an emission related component.
Contact apparatus maintenance.

27
Q

Diesel Particulate Filter (DPF)
Light (looks like a fart)

A

Light is on Solid (not Flashing)
Vehicle requires regen in reasonable
amount of time.
* Initiate an active regen with
highway driving or pumping
conditions
* OR perform a parked regen
Note: The apparatus can remain in
service during a parked regen.

28
Q

Diesel Particulate Filter (DPF)
Light (looks like a fart) is FLASHING

A

Light is Flashing
Vehicle requires regen as soon as
possible.
* Initiate an active regen with
highway driving or pumping
conditions
* OR perform a parked regen
* One or the other should be done as
soon as possible

29
Q

Diesel Particulate Filter (DPF)
Light With Check Engine

A

Parked regen must be performed. If
DPF light remains on after parked
regen, repeat. If light remains on
after 2nd regen, take out of service.

30
Q

Diesel Particulate Filter (DPF)
Light With Stop Engine

A

Vehicle should immediately be
moved to nearest safe location, shut
down and taken out of service.
Serious engine damage may result if
driven. Contact apparatus
maintenance.

31
Q

High Exhaust Temperature
System (HEST) Light (looks like fart with thermometer)

A

Indicates that an Active Regen has
been initiated and exhaust temp is
elevated above normal levels.
Only occurs when vehicle is
stationary or moving less than about
five mph.

32
Q

DEF Indicator Light
(looks like wet fart)

A
  • SOLID – Between 1/4 and 1/8 full
  • FLASHING – Below 1/8 full
    If the DEF indicator light and any
    or all of these additional indicators
    come on, the DEF tank is below
    1/4 gallon, and should be refilled
    immediately.
33
Q

Fan Engagement

A

Note: The fan clutch will engage to provide
airflow to cool the engine when one or more
of the following conditions are met:
– The engine coolant or air intake temperature
reaches the engine manufacturer’s preset
temperature for fan engagement (220 F).
– Placing the truck in “pump gear”.

34
Q

Shoreline Plug

A
  • In addition to charging the
    apparatus batteries:
    – Powers the receptacle in the L-3
    compartment to charge the Blow
    Hard Fan located in the rear
    compartment. It also powers the
    E-draulics and Hilti battery
    chargers located in L-3.
    – Powers the water heater for the
    decontamination rinse system.
  • If the station GFI breaker trips, turn
    off the power to the water rinse
    system 120 volt heating element.
35
Q

Warm Water Decon System

A
  • Separate 18-gallon water tank. Located above
    Cross lay compartment.
  • Two water heaters, 12v & 120v.
  • Designed to keep water tank warm 24/7 and
    ready for use immediately.
  • Full tank of cold water takes approximately 45-
    60 minutes to fully warm on shore power.
36
Q

Warm Water Decon Operation

A

Leave 12v & 120v heaters ON for
normal, day to day operations.
* This will provide a constant
source of warm, ready to use
water.
* 12v heater is wired to ignition
and will only draw power with
ignition switch on
* 120v heater wired into shore
power.
* Low water float will cut power to
both heaters and warning light
turns on (see photo)
Connect hose and spray
head to outlet on the
driver’s side Pump panel.
* Turn rinse pump on.
* Open the valve above the
outlet on the driver’s side
Pump panel.
* The pump is “ondemand” and can be on
without valve open.
* Best practice is to leave
pump off unless needed.

37
Q

Filling Warm Water System

A
  • Only fill with clean,
    potable water. (not from
    hydrant).
  • Garden hose connection
    provided low on driver’s
    side pump panel.
  • Attach garden hose and
    fill until water is draining
    from overflow.
  • Internal check valve in
    system prevents tank
    from draining through
    inlet.
38
Q

Fluid Checks

A
  • Manual oil checking is the
    same as previous.
  • The apparatus also have an
    electronic oil sensor and the
    oil level may be checked,
    with the engine off, using the
    information center.
39
Q

Electronic Transmission Fluid Check

A
  • The fluid temperature is
    above 140 F, and below 220
    F.
  • The transmission is in
    Neutral.
  • The engine is at idle.
  • The transmission output
    shaft is stopped.
  • The vehicle has been
    stationary for approximately
    two minutes to allow the
    fluid to settle.
  • Press the Up and Down
    arrow keys at same time.
  • Oil Level now displayed in
    plain English
  • Cycle through diagnostics
    by continuing to press up
    and down arrows.
  • Cycling through
    diagnostics will provide
    valuable information on
    transmissions status.
    Continue cycling through for more information by continuing to press
    up and down arrow keys at same time.
40
Q

Antilock Braking System

A

– ABS also allows for Anti-Slip-Resistance (ASR) feature.
If one wheel is off the road, spinning, ASR will apply
that brake to increase torque to the other wheel,
allowing it to pull the apparatus out.
– If both wheels are spinning, ASR will reduce the
engine torque to match the conditions.
– ASR is completely automatic, the driver does not need
to do anything.

41
Q

Traction Control

A

Sometimes, you may not want the ASR to
work at 100%, such as when trying to climb
out of deep mud or snow, loose dirt or sand.
– In that case, press the Off Road Traction Control
switch. This will allow some slippage (spinning) to
assist in climbing out.
– Press again to turn off. It will also reset with the
ignition switch cycling

42
Q

Onspot Chains

A
  • Onspot automatic
    chains are on the rear
    inside duals.
  • Effective up to about
    four inches. Advantage
    is ability to turn on for
    snowy or icy roads and
    off for clear roads.
  • Locking switch on the driver’s switch panel.
    – Engage when traveling between 2-25 mph just
    before reaching slippery conditions.
    – Do not exceed 35 mph.
    – Can stop on chains and start again, as long as
    switch is still in the active position.
43
Q

Opticom

A

– Comes on with master switch.
– There is a momentary
Opticom switch.
– To operate: Press and hold
the momentary button to turn
on without master switch.

44
Q

Ladder Rack

A

The BIG Change
The Extension Ladder is Now a 28’ 2 section ladder, it weighs 87
lbs. Compared to a 35’ 3 section weighing 129 lbs.
Ladder rack controls on right rear of apparatus.

45
Q

Pump Shift Control Switch

A
  • Electronically Actuated Switch To Engage
    The Rear Engine Power Take Off (REPTO)
  • Pump and Pump and Roll operation,
  • To Activate Pump – Stop, Shift, set the
    brake (setting the Brake automatically shift
    trans to neutral), Engage pump switch and
    wait for the OK to Stationary Pump.
  • To Pump and Roll - Stop, set the brake,
    Engage pump switch, Set up the pump for
    desired discharge, Release Brake and wait
    for the OK to Pump and Roll. Only use 1st
    gear for Pump and Roll.
46
Q

Manual Pump Shift Override

A

In the event, the pump
shift switch in the cab
does not work there is a
manual pump shift
override switch located
behind an access door
above the foam system
manifold drain.

47
Q

Pierce Pressure Governor

A
  • To switch between Pressure and RPM press and
    hold the mode button. Works at idle or throttled
    up.
  • Press Preset to go to 125 psi. Or, 1000 RPM
    depending on mode.
  • Press Inc or Dec to increase or decrease pressure
    or rpm.
    – One touch = 1 psi or 10 rpm
    – Hold for two seconds 5 psi or 50 rpm twice, then
    – 10 psi or 100 rpm until button is released.
  • At end of pump ops press Idle.
48
Q

Cavitation Protection in Pressure Mode

A

In pressure mode, if
pressure falls, PSG throttles up to recover.
– If PSG cannot recover, it switches to RPM Limit Mode.
* Pressure LED stays on.
* Displays flash and states Operator / RPM Limit.
* Pressure Setting Does not change, but Preset is disabled.
* PSG acts like manual throttle.
* If pressure recovers or operator corrects, returns to Pressure
Control Mode – normal operation.
* If it does not recover but stays above 45 psi, remains in RPM
Limit Mode.

49
Q

Cavitation Protection in RPM Mode

A

In RPM Limit mode,
* If pressure falls below 45 psi, but above 15 psi, enters
Lo Water Mode
– Displays Lo Water
– Sets rpm at 1100
– After seven seconds goes to idle.
* If pressure falls below 15 psi, enters No Water Mode
– Displays No Water
– Goes to idle.

50
Q

Priming

A
  • Priming is done with an air primer that uses air
    tank air pressure for a venturi. No fluids or oil
  • Three position switch: Auto, Off, Prime.
  • Normally left in Auto.
    – Priming will start when in pump gear,
    and shut off when primed (20 psi).
    – If loss of prime while operating, will automatically
    Re-Prime.
  • If in the Off position, move to Auto or press and
    hold in Prime position to manually prime.
51
Q

Akron Electronic Valves

A

There are 5 Akron electronic valves.
MANUAL OPERATION:
Push and hold the red arrow to close the valve.
Push and hold the green arrow to open the valve. Except
the tank to pump, this valve, when the green button is
pushed the valve opens automatically. See next slide
HOW TO USE THE PRESET FUNCTION ON DISCHARGES 1-
4 AND THE REAR LDH:
1. Push the yellow preset button.
2. The P1 will be begin to flash orange.
3. The orange menu button will change to GOTO.
4. Press the GOTO button and the valve will open
to the P1 position.
5. To switch to the P2 push the yellow “next” button.
P1 = 100% fully open
P2 = 0% fully closed
P3 = 50% Open

52
Q

Intake Relief Valves

A
  • Suction side relief valves are
    installed inside pump house to
    meet NFPA. These are difficult
    to adjust, will be left preset at
    190.
    – Dumps under apparatus 2.5”
    threaded outlet – labeled Do Not
    Cap, you can hook a hose onto it
    for redirecting.
    – May cause vacuum leak when
    drafting.
53
Q

Booster Reel

A

Located on Driver’s side
pump panel.
* 200’ of 1” hose.
* Very high friction loss
and designed for lower
flows (up to 60 GPM).
* Friction loss for 30gpm
is 37 psi per 50’
section.

54
Q

Foam System

A
  • Foam is plumbed to all crosslays, and
    the hose reel.
  • System automatically injects correct
    amount of foam to match flow.
  • Preset at 0.4% for Class B fires.
    Reduce to 0.1% for Class A fires.
  • Can flow 3,000 gpm at 0.4%.
  • 20-gallon tank 7,500 gallons of
    solution at 0.4%.
55
Q

Flushing Foam System

A

Needed every time – Nova Cool will damage
pump seals if left in system.
* Flow water from a discharge.
* Press Page button to Mode Select Screen.
* Use arrows to get to highlight Flush On/Off
* Press Enter, use arrows to turn flush On/Off
* When water is flowing, screen will go to
System Flush Time screen and counts down.
When done, goes back to regular screen.
After flushing open
the foam pump
drains.
* After taking out of
pump gear, always
open manifold
drain.

56
Q

Manifold Drain

A
  • At the conclusion of every pump operation,
    after taking out of pump gear, open the
    Manifold Drain valve, momentarily, to
    prevent damage to the check valve.
57
Q
A

Engineer Exam (11 decks)

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