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Engineer Exam > Pierce Enforcer > Flashcards

Pierce Enforcer Flashcards

1
Q

Gross Vehicle Weight

A

44,000 lbs (22.0 tons)

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2
Q

Vehicle Height

A

9’ 11”

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3
Q

Vehicle Length

A

31’ 1/4”

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4
Q

Tank size (Water / Foam)

A

600 gal / 30 gal

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5
Q

Engine HP

A

Cummins 450 hp

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6
Q

Pump capacity (gpm)

A

1500 gpm

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7
Q

Size compared to Quantum

A

4 ft shorter length
2 ft shorter wheel base
(Turns sharper)

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8
Q

NFPA 1901

A

All equipment in cap, except for wht is needed in emergency response, must be secured in cabinet or bracket

  • Use helmet holders
  • Do not store anything in area needed for air bags; nothing w/in 4” of the offer’s knee bag
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9
Q

Side roll and front impact safety

A

apparatus accidents #2 killer of firefighters; 60% involve a rollover

  • front impact protection: Pre-tensioner, seat retraction, side and front airbags
  • rollover protection (SRP): retract and tighten seatbelts, pull air ride seats to lowest position, deploy side airbags
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10
Q

Diesel Exhaust Fluid (DEF) reservoir size

A

4.5 gal

DEF consumption is 2-3% of fuel consumption - refill DEF every other fuel fill

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11
Q

Passive Regen

A

Occurs during normal engine operation (driving or pumping)

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12
Q

Active Regen

A

May occur without action by driver, but driver can activate by switching to highway driving or initiating a parked regen. Occurs when:

  • sufficient soot in filter
  • sufficient exhaust flow and temp
    >5 mph on speedometer

NO NEED TO INHIBIT REGEN DURING PUMPING

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13
Q

Parked Regen Temperatures

A

Exhaust temp reached 1500 degrees

  • Keep 5’ clearance around exhaust
  • Do not park on asphalt
  • Park off roadway
  • Do not have ladders near exhaust

HEST light illuminates when exhaust > 977 degrees

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14
Q

Cancelling a parked regen

A

No need to take vehicle out of service during regen

To respond to call:

  • press regen inhibit switch, or:
  • step on throttle, release parking brake, put transmission in gear, turn ignition off
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15
Q

Indicator Lights

A

Check Engine: Contact maintenance

Stop Engine: Major fault, take out of service

Malfunction indicator light (MIL): fault of emission related component, contact maintenance

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16
Q

Diesel Particulate Filter (DPF) light - solid (not flashing)

A

Initiate regen in reasonable amount of time

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17
Q

DPF light (flashing)

A

Regen ASAP

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18
Q

DPF light w/ Check Engine light

A

Parked Regen MUST be performed… if DPF light remains on, do another regen. If DPF light remains on after 2nd regen, take out of service

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19
Q

DPF light w/ Stop Engine light

A

Take out of service immediately

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20
Q

HEST Light

A

Indicates active regen has been initiated, exhaust temp > 977 degrees (occurs when vehicle stationary or >5mph)

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21
Q

DEF Indicator Light (solid color)

A

Between 1/4 and 1/8 full

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22
Q

DEF indicator light (flashing)

A

Below 1/8 full

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23
Q

When does fan clutch engage to cool the engine?

A

1) engine coolant or air intake temp exceeds 220 degrees, OR;
2) Engine in Pump gear

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24
Q

What does shoreline plug charge (other than apparatus batteries)?

A

1) Plug in officer’s rear compartment

2) Water heater for decon rinse system

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25
Q

Warm water decon tank size

A

18 gallons

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26
Q

Warm Water Decon heater types

A

Two heaters, 12v and 120v

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27
Q

Warm water decon system - how long does it take to fully warm on shore power?

A

45-60 mins

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28
Q

If station GFI trips on shorepower, what do you do?

A

Turn off 120v warm water decon heater

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29
Q

Warm water decon system - what happens when water float shows low water in warm water tank?

A

1) Turns off both heaters

2) illuminates warning light

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30
Q

Warm water decon system - best practice for “on-demand” pump

A

Leave pump off unless needed

Pump can be on without valve open

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31
Q

Filling warm water decon system tank

A

ONLY FILL WITH POTABLE WATER (not hydrant water)

use garden hose intake low on pump panel

Fill until water is draining from overflow (check valve prevents water from draining through inlet)

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32
Q

What type of oil should be used in the Engine?

A

API CJ-4 15W-40

Oils that are not CJ-4 damage the after treatment system

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33
Q

5 conditions needed to do electronic transmission fluid check

A

1) fluid temp 140-220 degrees
2) In Neutral
3) Engine at idle
4) trans output shaft is stopped
5) vehicle stationary for 2+ mins

34
Q

How to do electronic transmission fluid check

A

Press up and down arrow keys at the same time (oil level now displayed in plain english)

Cycle through different transmission diagnostics by pushing up/down arrows

35
Q

What do do if transmission fluid is low when doing electronic transmission fluid check?

A

Contact the fire shop

36
Q

Anti-slip resistance (ASR) - what does it do?

A

If one wheel off the road spinning, ASR applies brake to that wheel to increase torque to other wheel

If both wheels spinning, ASR reduces engine torque to match conditions

ASR is 100% automatic, driver doesn’t need to do anything

37
Q

When might you not want Anti-Slip Resistance (ASR) to work at 100%?

A

When trying to climb out of deep mud, snow, loose dirt or sand

38
Q

How do you turn off the Anti-Slip Resistance (ASR)?

A

Press the Off Road Traction Control Switch

This will allow some slippage to assist in climbing out

Press it again to turn off…cycling ignition also resets

39
Q

What are the features of Anti-Lock Braking (ABS) system?

A

Anti-Slip Resistance (ASR)

Stability Control: Roll Stability Control (RSC)

Stability Control: Electronic Stability Control (ESC)

40
Q

Roll Stability Control (RSC) - What does it do?

A

senses when rollover may occur:

  • reduces throttle
  • applies retarder
  • and/or selectively brakes wheels
41
Q

Electronic stability control (ESC) - what does it do?

A

Controls skidding

compares where you are steering to where vehicle is actually moving

tries to correct by selectively applying brakes and throttle

(Driver still needs to provide steering input)

42
Q

Onspot chains – effective in snow how deep?

A

4 inches

43
Q

Speed requirements to engage Onspot chains

A

engage when traveling 2-25 mph just before hitting slippery conditions

DO NOT EXCEED 35 mph

44
Q

How to silence alarms

A

Ignition switch “third position”…press and hold to silence active alarms

Will re-alarm for any new alarms

May be necessary to cycle parking brake for this feature to work

45
Q

Overhead switches - Opticom

A

Infrared and not visible
Small LEDs on when its operating
Momentarily press and hold when master switch is not on

46
Q

Overhead switches - Wheel Scene

A

Turns on lights over rear wheels

also activates turn signal and reverse emergency when emer master is on

47
Q

Switches - Backup alarm disable

A

turns off back up alarm (resets when shifted out of reverse)

48
Q

Switches - Load manager disable switch

A

system auto sheds electrical devices to maintain voltage - if this is a problem, disable shedding

But driver must then monitor electrical system

49
Q

Switches - Front Wheel Lock

A

applies air to front brakes for additional holding

parking brake must be set first

apparatus must be running and attended

50
Q

Command Zone Information Center (CZIC) - what’s on the home screen

A

Fuel level
DEF level
Seatbelts
Tire Pressure

(Displays cautions and warnings)

Press the menu button to get to other screens

51
Q

CZIC - Engine information screen - what does it display

A

Battery voltage
Air pressure
Odometer
Coolant temp

52
Q

Pump Shift Control Lever - Min PSI in air system to operate

A

Must have 80 PSI

53
Q

Pump shift control lever - what is the middle position used for?

A

Manual pump engagement

54
Q

Parking brake while in pump gear

A

Parking brake must be set to engage pump (hand throttle / PSG will not work without it)

If parking brake released while pumping, pump will disengage and pump slows to idle

55
Q

Manual pump engagement – how many people does it require?

A

Two person operation (only in emergency situations)

56
Q

Manual pump engagement three step process

A

1) In neutral, w/ brake set, in idle –> Move pump shift lever to middle position
2) 2nd person pushes in the manual pump shift on pump panel
3) With manual handle pushed in, driver puts pump shift lever in down position and transmission to D

57
Q

Pressure System Governor (PSG) - switching between Pressure and RPM

A

Press and hold the Mode button

Works at idle or throttled up

58
Q

PSG “Preset” pressure and RPM

A

125 PSI when in “Pressure” mode

1000 RPM when in “RPM” mode

59
Q

“Inc” and Dec” buttons on PSG

A

One touch = 1 psi or 10 RPM

Hold for 2 sec = 5 PSI or 50 RPM twice, then 10 PSI or 100 RPM until button released

60
Q

Cavitation protection - Pressure Mode

A
  • Pressure falls -> PSG throttles up
  • If PSG can’t recover, switches to RPM Limit
  • If pressure recovers, returns to Pressure mode
  • If does not recover but stays above 45 psi, remains in RPM limit
    - If below 45 but >15 –> “Lo Water” model –> RPM set at 1100, idle after 7 seconds
    - If below 15 psi –> No Water Mode, goes to idle
61
Q

Cavitation protection – What happens if pressure resolves while in RPM Limit/Lo Water/No Water mode?

A

PSG returns to Pressure Mode

62
Q

Cavitation Protection – In RPM Limit/Lo Water/No Water mode –> What happens if in idle and pressure does not resolve?

A

After 3 mins in idle, enters idle mode and pressure setting is canceled

63
Q

Type of primer

A

Air primer, uses air pressure from brake system to crease venturi (no fluids or oil)

64
Q

Auto priming

A

Starts when in pump gear and shuts off when primed (20 psi)

If loses prime while operating, automatically reprimes

65
Q

Which valves have electronic controls?

A

Large Diameter and Deluge discharges

66
Q

Main pump drain considerations

A

Do not open main pump drain under pressure

67
Q

Side suction relief valves location

A

Under apparatus - difficult to adjust and will be left preset

DO NOT CAP

May cause vacuum leak when drafting

68
Q

Manifold drain - when to open and why

A

FOAM system injects foam concentrate into a foam manifold

This manifold is pressurized and check valve keeps it so

AFTER EVERY PUMP OPERATION, TAKE OUT OF PUMP GEAR AND OPEN MANIFOLD DRAIN VALVE MOMENTARILY TO REVENT DAMAGE TO THE CHECK VALVE

69
Q

Booster reel hose length/diameter, flow and friction loss

A

Length: 150’
Diameter: 1”
Flow: Designed for less than 50 GPM
FL: @ 30 GPM FL is 37 PSI per 50’ section

70
Q

Booster reel: discharge gauge

A

There isn’t a dedicated gauge - use master discharge

71
Q

Booster reel blowout

A

Blows pressurized water/air and clears all water, prevents mold, prevents freezing

72
Q

Foam system: which discharges have foam?

A

All crosslays
booster reel
aft 2.5” discharge

73
Q

Foam system: tank size/flow capacity

A

30 gallon tank
Can flow 3000 gpm at 0.4%
Can flow 7500 gallons water with 30 gal foam tank at 0.4%

74
Q

Foam system: concentrate % for class A and class B fires

A

Class A: 0.1%

Class B: 0.4%

75
Q

Activating foam system

A

Foam pump is active whenever in pump gear

When in pump, press on (red) button (foam pumps to match water flow)

Goes into standby at less than 20 gpm

76
Q

Turning off foam system - procedure

A

Turn off with red button

Flow water until free of bubbles

Then flush with clean water (must be flushed after each use)

77
Q

Drafting foam procedure

A

1) set pails at the panel and connect pickup hose to inlet
2) Press the “Page” button until “Draft Class A” appears
3) Press enter
4) Use Up/Down arrows to adjust %

78
Q

Flushing foam system procedure

A

Needed every time (Nova Cool damages pump seals)

1) Flow water from a discharge
2) Press “Page” button to “Mode Select” screen
3) Use arrows to get to “Flush On/Off”
4) Press Enter
5) System Flush timer will countdown on screen
6) After flushing, open foam pump drains
7) Take out of pump gear and open manifold drain

79
Q

Filling foam tank - dome fill method

A

Use only Novacool

Pour down round fill tube in center of tower (reduces aeration) - if bubbles form, stop and wait

80
Q

Filling foam tank - pickup tube method

A

Set pails at pump panel
Connect pickup tube
Engage pump gear
Set foam selector valve to tank fill (behind door by foam fill inlet)
On screen press “Page” to get to “Mode select” screen
Toggle Up/Down to highlight the tank to be filled
Press Enter button, then toggle to “manual fill”
Tank will fill until full
Return foam selector valve back to “Inject”

Engineer Exam (11 decks)

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