Ch. 1 Pump/aerial apparatus Flashcards
(187 cards)
1
Q
What is the difference between the visual check and the operational check?
A
Visual: an inspection by eyesight
Operational: verifies functionality of a vehicle’s components or systems
2
Q
Whose responsibility is it for Maintenace and repairs of an apparatus?
A
Maintenance: part of the D/O’s duties
Repairs: Largely the purview of emergency vehicle technicians
3
Q
To ensure fire apparatus readiness, the DO must do what?
A
analyze vehicle components and use hand tools during visual and operational checks.
4
Q
Correction of deficiencies found in checks and maintenance duties must follow:
A
the policies and procedures of the AHJ.
Policy : organizational principle that is developed and adopted as a basis for decision making
Procedure: outline of the steps that must be performed in order to properly follow and organizational policy. Procedures help an organization to ensure that it consistently approaches a task in the correct way, in order to accomplish a specific objective.
5
Q
Examples of DO maintenance may include:
A
- Filling the fuel tank
- filling water tank
- correcting the engine oil level
- inflating tires
- cleaning and disinfecting the apparatus.
6
Q
What is preventative maintenance?
What does it not include?
A
Scheduled, ongoing, routine inspection and maintenance that is intended to prolong the life and to prevent the breakdown of apparatus, equipment, and facilities; do not involve repairing or replacing damaged or worn out components.
7
Q
What are the DO’s primary goals with preventive maintenance ?
A
- promote reliability of the apparatus.
- reduce the frequency and cost of repairs
- limit out-of-service time
- Eliminate unexpected and catastrophic failures.
8
Q
Who dictates a program for inspections, maintenance, and testing of emergency equipment vehicles?
A
The AHJ’s SOP’s.
9
Q
Dept’s may have a designated _____ in charge of its apparatus inspection, maintenance, and testing program?
A
officer
10
Q
The responsibilities of the designated officer in charge of an apparatus’s inspection, maintenance, and testing program may have these responsibilities as a part of his job:
A
- assigning inspection, maintenance, repair, and testing tasks
- retiring fire apparatus
- purchasing apparatus
- keeping daily/weekly visual and operational checks records per AHJ requirements.
- selecting driver/operators
11
Q
Part time, paid-on-call, or vollies, may establish a procedure where their apparatus and equipment checks are done when?
A
on at least a weekly schedule and within 24 hours of an incident response.
12
Q
When possible, who should DO’s speak to acquire any important information?
A
the last person who inspected or drove the apparatus.
13
Q
Incorrect or over cleaning, an apparatus can have a negative effect.
What may remove lubrication and from where?
A
Steam cleaners or pressure washers.
Lubrication from chassis, engine, pump, and aerial device components, and may add water that could corrode metal.
14
Q
Part of the duties of a DO is cleaning spills caused by leaking components. Fluids tend to spread where?
A
spread across components, and sometimes identifying a leaks point of origin becomes the work of an EVT.
15
Q
The DO can assist the EVT when there is leaking components by:
A
- finding leaking components in daily/weekly visual and operational checks
- notifying the proper personnel
- cleaning up spills
- documenting leaks
- watching for future leaks in the affected area.
16
Q
What are the 3 general classes of liquid leakage?
A
- class 1: seepage of liquid as indicated by wetness or discoloration not great enough to cause drops
- class 2: Great enough to form drops but not enough for them to fall from the item being inspected
- Class 3: great enough for drops to form and fall from the item being inspected
17
Q
What may dampness on fuel suction lines indicate?
A
that air is leaking into the system.
Should be reported ASAP
18
Q
What class of fuel line leakage is considered OOS criteria?
A
Class 2
Forming drops but not falling
19
Q
An oil leak that meats which class is considered OOS criteria?
A
Class 3
drops forming and falling
20
Q
A clean ______ allows for proper daily/weekly checks?
A
chassis and engine compartment
21
Q
if the chassis and engine compartment were dirty, the DO may not be able to see what?
A
If oil leakage or accumulation of road dirt obscured missing or cracked U-bolts on a leaf spring.
If the leaf spring were to separate from the axle, the fire apparatus could cross a median into oncoming traffic.
22
Q
FF’s encounter fires with what? How could we be exposed to these things from a dirty cab?
A
carcinogens, pathogens, or other hazardous materials.
FF’s encounter fires with toxic gases, vapors, and particulate matter in smoke that contaminated PPE and increase the risk of dermal or inhalation exposure.
23
Q
Bc of biohazards, the standard on fire department infection control program says all vehicles must carry items such as:
A
- proper PPE (gloves, eye protection, and other gear)
- waterless cleanser
- antiseptic wipes and cleaners
- other skin cleaning agents
24
Q
Bc of all the carcinogens present at a fire scene, the DO should do what?
A
keep windows up and strategically position the vehicle away from smoke or other hazardous materials.
25
If the apparatus becomes contaminated with products of combustion:
wipe down the interior hard surfaces with mild soap solution and vacuum entire interior.
26
What must DO's keep clean and why?
seat upholstery, dashboards, engine compartment coverings, and floor finishes clean.
Dirt accumulation may cause components to deteriorate
27
Large, loose dirt particles should be cleaned how?
first swept or vacuumed by a recommended high-efficiency particulate air (HEPA)- level vacuum.
28
What should be used to clean the vehicle interior?
warm soapy water or Commerical cleaning products
29
What are known as carcinogens?
products of combustion, particularly of man-made materials
30
The clean cab concept includes?
1. storage for multiple sets of PPE
2. carrying areas for contaminated PPE that are ventilated away from personnel areas
3. similar storage for SCBA
31
New apparatus require a ______ cleaning procedure than older units to avoid what?
gentler
Damage to new paint, detailing, and clear-coat protectants.
32
During the first _______ after an apparatus is received, while the paint and protective coating is still fresh, the vehicle should what?
6 months
vehicle should be washed frequently with cold water to harden the paint and keep it from spotting.
33
To ensure the best appearance of the vehicle and to reduce the chances of damaging the paint and protective coating, we should do what?
use a garden hose without a nozzle to apply water.
The water pressure should be set so that the stream from the hose does not damage the apparatus.
34
Higher pressures when cleaning an apparatus can do what?
can drive grit and debris into the finish.
35
General good washing practices include:
1. wash mud, dirt, insects, soot, tar, grease, and road salts of the vehicle before they have a chance to dry or harden
2. Do not use gasoline, heavy solvents, or any other substance not recommended for automotive paint.
3. do not use dry towels and rags to remove grit
4. rinse as much dirt from the vehicle as possible before applying washing product.
5. wash the vehicle with an automotive wash, soap, or shampoo
6. start from the top of the apparatus and work down
7. do not wash with extremely hot water or while the vehicle's surface is hot or sitting in the sun.
36
Failure to dry an apparatus thoroughly may encourage?
spotting and/or corrosion.
37
Suggestions to dry an apparatus are:
1. use towels or rags, but prior to use, check the cloth for film or lint residue, embedded metal shavings or grit, or hardened paint.
2. use a rubber squeegee made for getting water off vehicles
3. use a clean chamois rinsed frequently with clean water and wrung out by hand or with a machine roller
4. use an air blower specifically made for drying paint finishes. do not use compressed shop air
5. use a microfiber towel specifically made for drying automotive finishes
38
is waxing necessary on many new apparatus?
may no longer be necessary and may damage some clear-coat finishes applied over paints.
39
The DO can follow the general guidelines when preparing to wax an apparatus:
1. wash and dry the vehicle before apply wax or polish
2. perform these tasks out of the sun or the finish may grow too hot for the products to work effectively
3. avoid getting wax on plastic, rubber, glass, or other components unnecessary.
4. apply wax or polish according to product instructions, and polish out with a soft cloth or electric buffer.
5. take car when waxing not to damage or remove trim like gold leaf, safety decals, or related instructions that should remain on apparatus.
40
What can the DO use to wash the windshield?
any commercial glass cleaner, warm soapy water, or a safely diluted ammonia to clean automotive glass.
*Before attempting to dilute ammonia for cleaning, follow all manufacturing guidelines and SOPs for safe dilution methods.
41
According to NFPA 1010, The DO must perform visual and operational checks on the following items for emergency vehicles
1. batteries
2. coolant system
3. fuel
4. oil
5. steering systems
6. tools, appliances, and equipment
7. braking systems
8. electrical systems
9. hydraulic systems
10. tires
11. belts
12. built in safety systems
42
In addition to the visual and operational test for emergency vehicles, they must check specific components to check for pumping apparatus:
1. supply levels for water and other extinguishing agents.
2. pumping systems
3. foam systems
43
How should a driver begin their inspection process?
by being observant when approaching the vehicle.
44
When the driver begins their inspection process by being observant when approaching the vehicle, what are some examples of what they might see?
Conditions such as vehicle damage, leaning to one side, and fluid leaks are examples of items that can be apparent upon approach.
45
During the approach, the DE should look for what?
look for fluids on the ground.
Note their color, the amount on the ground, and any dripping.
*if allowed to lift the cab, check all hoses and connections for wetness.
46
any leakage of fluids merits what?
an investigation, especially if the DO determines it may be a class 3 leaks.
47
Remember that not all dripping is what?
a leakage. some fluids escape as part of the normal operation of the component.
48
If the DO discovers a component that meets out of service criteria per the AHJ, who can declare the component OOS?
NOT the DO. That determination is left to the AHJ-approved tech.
49
AHJ guidelines may mandate that the apparatus remains OOS until what?
until a tech performs an inspection.
50
For documentation, the use of a daily/weekly for check sheet will help with what?
the process known as a walk around.
51
What does the walk around include?
checking the engine compartment for fluid levels prior to entering the cab to start the engine and prior to moving to the 360 degrees around the apparatus
52
For inspections of a vehicle equipped with a tilt cab, what must we ensure?
the controls operate freely and that the hold-open device is latched.
Check cab latches for security of mounting, lubrication, and accumulation of metal fillings in the mechanism.
53
Many cabs have what that allow checking fluids? what are the fluids?
inspection doors
Engine oil, coolant, and other fluids.
*cab should still be lifted weekly for inspection of engine compartment.
54
What does the engine compartment house?
the engine, transmission, steering linkage, and other operational components.
55
When performing visual checks of the engine compartment, use what acronym?
"CDLPMS"
C- cracks
D- dents
L- leaks
P- properly M-mounted and S-secured
56
When checking batteries, what should DO ensure:
the cable connections are tight and protected with a film of grease, petroleum jelly, or battery terminal protection product.
57
How do we keep batteries clean?
By washing them with a solution of baking soda and water. Then dry the top with a shop towel or other absorbent cloth.
58
When checking batteries, what are we looking for?
cracks, signs of leaks, or deformities in the battery casing.
59
What do most automotive batteries contain?
lead and sulfuric acid
60
What should we wear when dealing with batteries?
safety goggles, acid-resistant gloves, and coveralls
61
What can batteries give of that is toxic?
hydrogen gas, which is highly explosive
62
What do batteries do to vent?
Why are they dangerous?
they contain vents to allow the hydrogen gas to escape, so any ignition source may cause an explosion or fire.
63
What must be done when servicing batteries?
ventilate the area
64
battery dentonation will:
likely throw caustic acid and flying debris around immediate area.
65
Before attempting to jump start a vehicle, the DO must be aware of several important considerations. what are they?
1. ensure the vehicle being used as the power source has the same voltage electrical system as the apparatus being jumped. This verification will prevent damage from occurring to either system.
2. check the manual provided from manufacturer before jumping or charging the system. The manual should specify to which battery the cables should be connected. Most fire apparatus have more than 1 battery connected to the apparatus.
3. make sure the jumper cables are connected to the specified batter in the recommended manner. Be sure all personnel in the area are wearing appropriate PPE, including goggles.
4. Be aware if a battery is frozen, sometimes indicated by bulging sides
66
When should fluid checks be done?
Before the apparatus has been started.
67
Which fluid can be done when the engine is running?
Only transmission fluid.
68
Fluid levels will do what as part of the diesel engine operation?
fluid levels normally go down
69
Coolant and oil will do what as part of the diesel engine operations?
coolant will evaporate and oil can burn slightly.
70
When topping off the oil, what must you make sure of?
That the vehicle is sitting on a level surface.
If the engine is running, shut it off and let the engine sit for the required time per the manufacturers recommendations.
71
What will happen if you overfill the oil?
could cause motor damage.
72
Unlike coolant and engine oil that is ________, decreased hydraulic fluid means what?
consumable
there is most likely a leak somewhere.
73
If there is a overflowing of hydraulic fluid at the reservoir tank with foam, what does that mean?
There could be a loose connection or perforated suction line.
74
Some firefighting foam systems run from what?
Where is that system run from?
a hydraulic pump that in turn is run from a drive on the fire pump
75
Can generators be run from the hydraulic lines?
yes. From a transmission mounted power take off (PTO) system.
76
What is a PTO?
power take off system- mechanism that allows a vehicle engine to power equipment such as a pump, winch, or portable tool; it is typically attached to the transmission
77
Modern fire apparatus are almost exclusively what?
automatic transmissions
78
When should in-cab check start?
once the fluids and all engine compartment components are checked.
79
An operational check of the starting system determines what?
if the engine starts or not
80
Why would the battery switch be a place where it is not easily reached when seated?
because on many apparatus's the manufacturer prohibits turning the battery off while the engine is running.
81
What must you ensure during the starting procedure to avoid excessive load on batteries?
that all electrical switches are turned in the off position.
82
Before setting the seat, mirrors, and steering wheel for personal needs, what do you need to do?
allow the gauges to initiate the prove-out (self check) stage.
To perform the prove-out self check, turn the ignition on but do not start the engine.
83
What is the prove-out (self-check) stage?
Diagnostic check which automotive gauges and indicators move in full range and/or illuminate when is apparatus is started.
84
During the Prove-out (self check) stage, what is the DO doing?
focusing on gauges and indicators while going through this cycle to check that these indicators work.
Also, placing their foot on the brake pedal of newer systems, the DO can test where each ABS solenoid can be heard operating on at a time in a set pattern.
85
Why should the fire pump be engaged?
to confirm it can develop pressure.
86
When an apparatus is starting for non emergency purposes, it should NOT what?
NOT run under full load unit it has had time to warm up to operating temperature.
87
Stop engine lamp (Red)-
indicates that there is a severe problem detected by the onboard diagnostics, so the vehicle needs to be stopped as soon as it is safe to do so to find the cause.
88
Check engine lamp or amber warning lamp (Amber)-
illuminates when the engine needs to be serviced at the first opportunity
89
Malfunction indicator lamp (MIL)-
illuminates when the onboard diagnostics system detects an emissions control system malfunction
90
What is the common practice for fuel level?
keep it at least 3/4 full.
91
Diesel exhaust fluid (DEF) gauge and/or indicator-
Allows the DO to check DEF tank levels via the guage on the dashboard cluster, usually located near the fuel gauge.
92
Why is it important to keep the DEF tank full?
to eliminate the formations of crystals as the fluid is exposed to air.
93
HEST (high exhaust system temperature) light-
lights up when the exhaust system is very hot, usually due to an active regeneration.
94
Diesel Particulate filter (DPF) light-
lights up to indicate the DPF is loading up with soot and regeneration is needed.
95
Oil pressure gauge and/or visual and audible warning-
indicates oil pressure and/or if it has gone too low.
Low pressure could be a result of low oil levels
96
Coolant temperature gauge and/or visual audible warning-
indicates engine coolant temperature and whether the engine is operating within its normal temperature range.
A warning may be heard if the engine temp goes above the normal operating temperature range and the engine is beginning to overheat.
97
coolant level visual and audible warning-
identifies coolant levels in the cooling system and notifies the operator when fluid levels are below the manufacturers recommendations
98
Ammeter-
indicates the amount of current flowing to or from the batteries. positive readings indicate charging. negative readings indicate discharging of the batteries.
99
What does it mean if you have a positive or negative reading on the Ammeter?
positive= the batteries are charging
negative= the batteries are discharging.
100
Voltmeter and/or high and low voltage visual and audible warning-
indicated high voltage that could cause the system damage, or low voltage that may cause the vehicle to stall or not be able to start if the engine is stopped.
101
What is happening if we receive a high alarm on the voltmeter?
there is high voltage in the system that could damage the system.
102
What could happen if we receive a low alarm on the voltmeter?
The vehicle could stall and not start if the engine is stopped.
103
Air brake pressure gauge and/or low pressure visual or audible warning-
includes 1 or 2 gauges.
Beware of low pressure. If it goes too low, the brakes will lock up.
104
Transmission fluid temperature gauge and/or visual and audible warning-
Indicates temp of transmission fluid. Beware of high transmission temp.
Duty cycle may have to be changed if its too high.
Low fluid levels can overheat the transmission
105
Tachometer-
indicates engine speed in 100s of revolutions per min (RPM).
When a DO downshifts, this instrument helps them be aware of exceeding the governed engine speed
106
Engine/operation hour gauge
indicate engine hours, which are typically more important than miles for maintenance intervals on a pumper/aerial apparatus bc of standby and pumping time.
107
Aerial hour gauge-
May be located in the cab. Excessive air restriction must be recognized and corrected. It may be caused by dirt plugging the filter or a foreign object that ended up in the engine's air intake. It may be just a warning light.
108
speedometer/odometer-
the speed.
The speedometer should be at 0 when parked.
Above 0, the gauge is defective or the truck is engaged in pump
109
What happens if you see a reading above 0 on the speedometer when parked?
the gauge is defective or the truck may be in pump.
110
many serious fire apparatus collisions have been caused by what?
faulty brakes
111
What dictates how and when brakes are tested?
Federal, state, and provincial laws
112
Smaller apparatus and some older vehicles may be equipped with what type of brakes?
hydraulic braking systems
113
most commercial and private vehicles built since _____ are equipped with what type of brakes?
1990
anti-lock braking systems
114
most large, modern FD pumping apparatus are equipped with what type of brakes?
air-actuated braking systems (air brakes)
115
Hydraulic braking system
a braking system that uses a fluid in a closed system to pressurize wheel cylinders when activated
116
anti locking braking systems
(ABS)
an electronic system that monitors wheel spin. when braking and a wheel are sensed to begin locking up, the brake on that wheel is temporarily released to prevent skidding.
117
air-actuated braking system
an apparatus brake system where the brake pad/shoes are fully engaged when there is no air supplied to the brake calipers.
118
what braking system uses a fluid in a closed system to pressurize wheel cylinders when activated
Hydraulic braking system
119
What braking system is an electronic system that monitors wheel spin.
anti locking braking systems
(ABS)
120
What braking system senses wheels are locking up so it so it temporarily released to prevent skidding?
anti locking braking systems
(ABS)
121
Which brake system will have brake pad/shoes are fully engaged when there is no air supplied to the brake calipers.
air-actuated braking system.
122
Which braking system reduces the risk of an apparatus going into a slide, jackknife, or spin during heavy braking?
ABS brake system
Anti-lock braking system
123
Which braking system assist the DO in keeping the apparatus in a straight trajectory during heavy or emergency braking?
ABS brake system
Anti-lock braking system
124
ABS (Anti-lock braking system) technology does not necessarily provide a _______, but greatly enhances the likelihood of a ___________.
faster
controlled stop
125
apparatus brakes should be thoroughly tested at least _______ in accordance with NFPA 1910
annually
126
apparatus with too much ______ can be difficult to stop.
brake slack
127
if the _______ are NOT operating within the manufactures specifications, the vehicle should NOT be driven until a certified mechanic has made repairs.
slack adjusters
128
What is a slack adjuster?
devices used in an air brake system that connect between the activation pads and the brake pads that compensate for brake pad wear.
129
What are the 6 indicator lights for the diesel exhaust emissions systems that can be checked for operation during prove-out:
1. DPF light
2. DEF light
3. HEST light
4. Yellow check-engine light
5. Yellow malfunction indicator light
6. Red stop-engine light
130
Depending on their date of manufacture, exhaust systems on newer apparatus may be equipped with systems :
provide for cleaner, more environmentally safe emissions from diesel engines.
131
what traps much of the particulate matter in exhaust emissions.
Diesel Particulate filter (DPFs)
132
The DPF (diesel particulate filter) systems must periodically conduct what?
regen in which the exhaust temp is raised to burn off particulate matter in the filter
133
vehicles produced after __________ have what systems?
after Jan 1, 2010
DPF and Selective catalytic reduction (SCR)
134
What is a selective catalytic reduction (SCR)
A system that uses diesel exhaust fluid (DEF) to help further reduce emissions
135
How does DEF work
DEF is injected into the exhaust downstream of the DPF in order to reduce the nitrogen oxide (NOx) emissions from diesel engines
136
modern apparatus are equipped with _____ that is intended to prevent an overload of the vehicles electrical generation system.
load management system.
137
What does a load management system do?
it is an electrical monitoring system that will shed electrical load in a predetermined order if the chassis voltage begins to drop below a predetermined level.
🔋 Mnemonic: "Load Manager = Battery Bodyguard"
Imagine the load manager as a bodyguard for your battery.
When voltage drops too low, it kicks out the power hogs first (non-essential devices), one by one, to protect the system from draining completely.
138
What is an overload?
operation of equipment or a conductor in excess of its rated ampacity; continuous overload may result in overheating that damages the equipment.
139
Load management systems incorporate ______ and ______ into the same device.
load sequencer and load monitor
140
what is a load sequencer?
device in an electrical system that turns lights on at specified intervals, so that the start-up load for all of the devices does not occur at the same time.
🧠 Memory Hook:
“Sequencer = Sequence = One at a Time”
All about timing and load control.
141
what is a load monitor?
device that "watches" an electrical system for added loads that may threaten to overload the system.
142
If an overload condition occurs, the _________ will shut down less important electrical equipment in order to prevent the overload. What is this known as?
load monitor
load shedding
143
If the apparatus has a manual shift transmission what must the DO do?
check the adjustment of the clutch pedal.
The pedal should NOT have insufficient or excessive free play (also called free travel)
144
What is free play? what is it also known as?
the distance that the pedal must be pushed before the throw-out bearing actually connects to the clutch release fingers.
free travel.
145
what is a throw-out bearing?
the component used to push on the internal clutch fingers connected to the clutch pedal which, when activated, disengages the clutch from the engine.
146
insufficient free play will cause the clutch to do what?
slip
147
What does the DO need to check when checking out the steering wheels free play?
excess play that does not result in the actual movement of the front wheels
148
steering wheel play should not be more than:
NO more than 10 degrees in either direction.
149
On a 20 inch diameter steering wheel, the play may be:
2 inches in either direction.
150
after all in-cab checks are completed, the DO should:
begin the exterior inspection.
151
Operational checks using electrical load can be done using:
a shoreline rather than the engine.
152
whenever the engine is parked and running,
chock the wheels
153
when initiating the exterior inspection, walk in a :
methodical, attentive rotation around the apparatus.
154
how often should wheels be checked to ensure they appear to without cracks, deformities, or corrosion, and to ensure structural integrity?
on a weekly basis
155
When the dept receives an apparatus or when the vehicle undergoes a tire change, the DO:
Can help the process by verifying the tire type is correct.
156
All pertinent information on the apparatus tires: inflation and size can be found where?
the vehicles info plaque located near/around the driver station.
157
NFPA 1910 mandates tire depth be:
limitations of NO LESS THAN 4/32 inches on any steering axle or 2/32 inches on any non-steering axle at any 2 adjacent major tread grooves
158
What are unusual wear patterns of tires
what could these issues indicate what?
tread separation, cupping, and excessive wear on the sidewalls.
steering or suspensions issues.
159
Tire pressure should be based on what?
actual vehicle weight and should never exceed the max recommended pressure.
160
proper tire pressure provides for good handling bc:
the tire has the maximum rubber meeting the road.
161
Low tire pressure will cause the tire to do what?
to cup and run on both outsides of the tread
162
What else does low tire pressure cause?
excessive fuel consumption from the friction
163
higher than normal tire pressure will cause?
bulge the tires and they tend to ride only on the inside treads. This can also cause damage from road shock as well as a hard ride.
164
According to NFPA 1910, tires have a max age of :
7 years as determined by DOT code on the sidewall.
165
What is curb weight?
weight of an empty apparatus fresh off the assembly line with no tools, water, equipment, or passengers.
166
The manufacturer determines the ________ as the max weight at which a vehicle can be safely operated on roadways in ideal conditions.
GVWR- gross vehicle weight rating
167
what is GAWRs?
gross axle weight ratings
The max load capacity weight of an axle, measured where the tire and ground meet.
168
In many systems, the vehicle mounted generator provides power for what?
floodlights and any portable electrically operated equipment
169
The vehicle mounted generators can be powered by:
separate engines with or without their own fuel tank, or by hydraulic power take off systems.
170
Fixed power plants (vehicle mounted generators) are generally how many vaults?
110-220 v and have high capacities.
171
Portable generators are available with ______ volts and a variety of power capabilities, with ______ being the common size.
110-220 v
5,000 watts (5kW)
172
When a small amount of electric power is needed, a ______ can convert a vehicles:
inverter
convert a vehicles 12 or 24 volt DC current into a 11- or 220 volt AC current.
173
Some apparatus's are equipped with banks of lights mounted on booms that are powered by:
electric, pneumatic, or hydraulic systems
174
The bank of lights mounted on booms generally have a capacity of up to:
1,500 watts (1.5kW) per light
175
LED lighting equipment operates at:
a lower power threshold
176
overtaxing the electrical supply with the lighting will result in:
poor lighting quality, damage to the lighting and generator equipment, and restriction of other tools operated.
177
Electrical cords stored on truck are usually:
10-or 12-guage, 3 wire cords with twist and lock receptacles to provide secure connections
178
NFPA 1910 states that records SHALL be maintained for the truck on what?
on all inspections, maintenance requests, preventive Maintenace, repairs, and testing results
179
_______ files must be kept and maintained for each fire apparatus on their inspections, maintenance, preventive maintenance, repairs, and testing results:
separate
180
How long do the files need to be kept for all truck information on maintenance, etc?
for the life of the apparatus and delivered with the vehicle in the case of a transfer or a change of ownership
181
Air brake test is a series of test to ensure the serviceability of the brake system. these tests include:
air loss, air compressor build up, air warning, and emergency parking brake activation.
182
What is the chassis?
basic operating system of the motor vehicle consisting of the frame, suspension system, wheels, and steering mechanism , but NOT the body.
183
What is the purpose of the amber "check engine" lamp?
to notify that the engine needs to be serviced at the next opportunity
184
what does the voltmeter warning light typically indicate?
system damage due to high/low voltage
185
what will happen if air brake pressure is too low?
the brakes will lock up
186
what does the tachometer measure?
engine speed in 100s of revolutions per minute (RPM)
187
What does the aerial hour gauge help monitor?
foreign object restriction in the air intake
