Engineer Flashcards
Fluids that can be checked & maintained by station crews.
Motor oil, transmission fluid, coolant, DEF, & power steering fluid.
When viewing the underside of the engine, what should be checked for leaks?
Motor, transmission, pump transfer case, & drive train
Hydraulic tips should be stored with a _______ gap between the tips.
1/2”
Safety or operational concerns shall be brought to the attention of the _________________immediately with an appropriate logbook entry.
Company officer
Booster tank and foam tank levels must be checked by ________________ into the tank
Visual observation.
Proper air brake pressure for front & rear brakes.
> 100 PSI
Minimum tread depth:
4/32” or when tread wear indicators are even with the tire tread.
Once started, the motor must run until it reaches ____________________.
Normal operating temperature.
Portable O2 tanks- ensure tank pressure is_______________.
> 1,000 PSI.
Do not trigger the air chisel unless the chisel head is in contact with a _______________.
Solid material
Air chisel bottle pressure should be______________.
> 4,000 PSI
Chain saw. Use ________________ for bar oil lubricant.
Motor oil
Add ________________ to newly acquired gas.
Fuel stabilizer
Rotate older gas to use with _________________and keep fresh gas on apparatus.
Lawn equipment
Apply wax ____________or in accordance with the company maintenance schedule.
Monthly
Bleed all _______ air tanks beneath the engine.
4
(For air thank beneath the engine)
Open the valve and bleed until the discharging air is ________________.
Free of moisture
Ensure strainers are present in __________intakes.
2 1/2”
Clean all threads on the pump and appliances and apply ___________ as needed.
Grease
The intake valve shall be removed and cleaned. Inspect internal casing for rust or sediment buildup and proper operation of the valve. Clean and lubricate the Storz connection gasket, internal threads (piston intakes) and bleeder valve. If the swivel does not move freely apply __________________ and work until loose.
Soapy water
Back-flush
With the pump disengaged pressurize the _______________side of the pump from a hydrant.
Discharge
Chainsaws shall be thoroughly inspected and cleaned. Inspect air filter, remove, and clean if indicated. Remove chain assembly and clean chain drive. Use ______________ to remove debris from hard to reach areas.
Air pressure
Clean air tools with ______________ and dry thoroughly
Soapy water
Apply __________ drops of air tool oil into the blade end and operate.
5
Check ________________ dates on each oxygen bottle and SCBA bottle.
Hydrostatic
Portable extinguishers.
The inspection label (right) indicates the date of the __________inspection.
Last
The come- along should be cleaned with a ____________.
Dry cloth
This refers to Liquid Wrench, WD-40, or similar water- displacing lubricating oil, typically in an aerosol can.
Light oil
Used on roll-up door tracks and slide out compartment trays. It leaves minimal residue. Do not use silicone on other moving parts. Remove dirt prior to applying silicone.
Silicone spray
Recommended to ease the movement of pump valve handles. It can be applied to the remote control handle shaft and mechanism, from the pump panel to the valve handle attachment. Remove dirt prior to applying graphite.
Graphite
The only grease permitted is ________________machinery grease. Apply to appliance and pump threads as needed.
Food grade
Engine positioning
EMS incident.
Single family residence.
When spotting the engine give priority to the location of the rescue unit and stretcher access. Consider the safety of the patient when loading. On busy streets use the engine to protect the patient loading area.
Engine positioning.
EMS Incident
Apartments, Assisted Living, & Multi-Story Buildings
Due to limited access to entrances, lobbies, and courtyards, the engine may need to park well removed from the location. In tight complexes it may be necessary to park outside, leaving the closest access for the rescue unit.
Engine positioning
Single family residence
Structure Fire
The first arriving engine and ladder company should be spotted in front of the structure in most cases. Position the engine for placement of attack lines while leaving room in front of the structure for the ladder company.
Engine positioning
Multi-story building
Structure Fire
Engine placement is the same as for single story structures, but the engine should be placed to leave the building corners open. This permits the ladder company to place the turntable in a position to reach two sides of the structure.
Newer engines need ________feet of space on the officer’s side to lower the ladder rack.
5
When backing, use a spotter on the engineer’s side, ________feet from the tailboard.
5-10
The (water) main sizes range from __________in diameter and average 70 PSI static pressure.
6”-24”
In some cases, hydrant pressure is provided by ___________pressure from water towers.
Head
The communities of _______________________ operate their own water utilities and the system parameters may differ from the majority of Jacksonville served by JEA.
Atlantic Beach
Neptune Beach
Baldwin
All city hydrants are equipped with a ___________inlet and are supplied by the water main system.
6”
What color are city hydrants.
Yellow
Supply main sizes for city hydrants.
Residential: 6”-10”
Commercial: 8”-24”
The diameter of the backflow preventer is the same as the ______________.
Water main
Static pressure for private hydrants at industrial facilities.
Up to 175 PSI
Private hydrant color.
Red
Note- as of 2016, hydrants are transitioning to the color white.
NFPA hydrant color code.
Blue – 1500 GPM or more
Green – 1000 – 1499 GPM
Orange – 500 – 999 GPM
Red – Below 500 GPM
_______________hydrants may be found on reclaimed water mains. These mains are for irrigation and not intended for firefighting use. Hydrants are installed on these mains for maintenance flushing.
Purple
Sound barrier walls along limited access highways may incorporate _____________(about 12”) to reach hydrants on nearby streets.
Access holes
Drafting utilizes _______________pressure to supply a fire pump through hard suction hose.
Atmospheric
Fire department pumps are equipped with a _______________ to reduce pressure inside the pump below atmospheric pressure.
Primer
Each JFRD engine has a ________(size) TANK-TO-PUMP valve.
3”
Flow from the booster tank is limited to ____________ GPM on all JFRD engines.
700-800
Booster tanks shall be refilled only from ___________________ and always from the nearest supply point.
City hydrants
A dry hydrant consists of a pipe with a threaded 4- 1/2” steamer connection attached to a static water supply. The pipe is commonly PVC but could be cast iron or stainless steel.
4 1/2”
JFRD engines are built by Pierce and are fitted with midship mounted Waterous ________________ pumps.
Centrifugal
Three primary sections of a modern fire pump.
Intake manifold (lower half of the pump body.) • Discharge manifold (upper half of the pump body.) • Centrifugal pump assembly (including impeller(s).)
The pump transfer case mounted below the pump transfers power from the diesel motor to the drivetrain (in the ROAD position) or to the ______________ (in the PUMP position)
Pump impellers
JFRD engines are powered by six-cylinder turbo-charged diesel motors, manufactured by __________________.
Caterpillar (C12 or C13)
~Or~
Cummins (ISL series.)
The impeller has a _________________design allowing water under pressure to pass through the impeller when the pump is not engaged, and the impeller is stationary.
Flow- through
Centrifugal pumps cannot pump ______due to their open design.
Air
The impeller discharges water into
the _____________the chamber which directs the pressurized water into the discharge manifold.
Volute
As motor speed (RPM)
increases, the velocity of the impeller(s)
increases. This results in a corresponding increase in ___________________ (PDP).
Pump discharge pressure
The pump shift control is a ________________switch located in the cab at the engineer position. There are 3 positions – ROAD, NEUTRAL, and PUMP. The pump shift controls a ring gear within the transfer case.
Pneumatic
Centrifugal pumps are tested by Underwriters Laboratories (UL) in accordance with ______________.
NFPA 1911
A data plate is affixed to the pump panel with results of the initial pump test. The pump test measures volume at three pressures while drafting. The volume at _____________is called the rated capacity.
150 PSI
A 1,500 GPM pump must pump.
100% of rated capacity at 150 PSI (1500 GPM)
70% of rated capacity at 200 PSI (1050 GPM)
50% of rated capacity at 250 PSI (750 GPM
The data plate (pump testing) may also indicate the ___________________.
test RPM & governed speed.
It is important to understand that centrifugal pumps have the ability to pump more than their rated capacity if supplied from a _____________________.
Pressurized source
A two-stage pump can operate in one of two settings - _____________________. In PRESSURE each impeller provides pressure in series.
Pressure or volume.
The _________________ position is also called parallel or capacity.
Volume
When pumping beyond 50% of a pump’s rated capacity, you must be in ________________.
Volume
Changing between the two settings (volume or pressure) is accomplished by the _______________.
Transfer valve.
The transfer valve is electrically-driven but also has a manual override in case of electric switch failure. Utilize a 3⁄4” socket and socket wrench to change settings if the electric valve fails.
3/4”
The normal position of the transfer valve is _______________which will produce maximum pump performance for the majority of pumping scenarios.
Volume
JFRD engines _______________ intakes. There are two 6” steamer intakes and two 2-1/2” auxiliary intakes (often called “pony” intakes) on each engine. Some engines have an additional 5” intake on
the front or rear with an electrically
controlled valve.
4 or 5
Each steamer intake has installed a piston intake valve (PIV) or ball intake valve (BIV). Both types of intake valves incorporate a water control valve, a spring-operated pressure relief valve, a bleeder valve to bleed air from supply hose, and a 5” Storz adapter. The newer ________ is less restrictive (allowing higher GPM) and is rated for drafting.
BIV
The pump is protected by an ____________________built into the pump, protecting the pump from excess intake pressure.
Intake pressure relief valve
The PIV/BIV also includes a ___________________that can provide redundant pump protection but can also protect supply hose from excess pressure when the intake valve is closed.
Pressure relief valve
Both the internal pressure relief valve and PIV/BIV are preset to ___________________.Periodic adjustment may be necessary which can be performed by the engineer.
150 PSI
The diameter of the intake pipe is determined by the _____________ of the pump.
Rated capacity
All JFRD engines have _________steamer intakes which allow the pump to draw the rated capacity at draft through one steamer intake (1500 GPM) or both steamer intakes (1750 and 2000 GPM).
6”
The front and rear intake pipes are 5” in diameter and because of the reduced diameter will flow less than the steamers (1000 GPM at draft, 1500 GPM from a hydrant).
5”
The rear intake is not properly equipped for drafting but can be used to connect 5” hose where on- scene access precludes use of the steamer connections. ____________intakes are capable of drafting and in some situations will be the preferred intake for drafting.
Front
E-7 and E-21 have one additional intake inside the tailboard compartment. This intake is a ________________ and is painted red to distinguish it from other connections.
Direct fill tank
Note-
These engines are equipped with foam proportioners, where the water for the foam solution is metered through the red intake into the booster tank for more accurate finished foam. On a hazmat incident this intake may be the preferred connection for the hydrant or tanker supply line.
These valves, when opened, can be turned _________degrees to “lock” in position.
45
Note- valves should not be placed in this position when closed.
Large diameter intakes and discharges use quarter-turn valves controlled by a hand wheel (left) or electronic control. Due to the large volumes, they must be of the “slow operating” type to prevent water hammer. The electric front and rear intake valve take ___________seconds to fully open or fully close.
15-20
The most commonly used valves are ____________________.
Tank to Pump & Tank Fill
The pressure scale reads from _____________ PSI, and the vacuum scale reads 0 to -30 inches.
0-600
Both types of priming pumps draw current from the vehicle charging system. Although you can safely operate the primer at any pressure or RPM, for
best performance set the RPM between_______________.
1,000-1,200
There are four motor functions to be monitored while pumping: _____________________________.
Coolant temperature
Oil pressure
Transmission temperature
Voltage
What are the normal parameters for engine function gauges?
Oil Pressure
15 PSI at idle 35-45 PSI at speed
Coolant Temperature
180-220 degrees fully warmed up
Voltage
13 to 14.5 volts
Transmission Temperature
Under 300 degrees is normal
Pump cooler/ recirculator
This valve controls a small discharge line that directs pump water to the booster tank. When opened it will flow less than _____________and will remove hot pump water, to be replaced with cooler water from the supply.
25 GPM
The governor is integrated into the motor’s _____________________and controls pump discharge pressure (PDP) by changing motor RPM.
Fuel management system
The pressure governor consists of only two major parts.the control box (located on the pump panel) and pressure sensor (installed within the discharge manifold).
JFRD utilizes two types of pressure governors
Pump Boss 100
Pump Boss 200
Two modes of operation for the pressure governor.
PSI & RPM
The governor in this mode (PSI) can be compared to an automotive ________________.
Cruise control
The most common disruption to PDP is the opening and closing of nozzles.
Opening & closing of nozzles.
The engineer must select PSI mode for the following fireground operations:
Pumping handlines
Pumping ladder pipes or ground monitors
Supplying a sprinkler or standpipe system
Selecting the RPM MODE _____________ the pressure sensor, and the governor will maintain the set RPM only.
Disables
RPM Mode should be used for the following situations.
Drafting Relay pumping Charging 5” hose PSI mode malfunction Pumping operations that exceed 300 PSI
When relay pumping only the ___________ engine needs to operate in PSI MODE.
Attack
When opening the _____________ valve the PDP may drop suddenly.
LDH Discharge
Change to ______________ before charging 5” hose when using other lines
RPM Mode
Other than rapid pressure increases in excess of __________, there is no pressure protection in the RPM MODE.
30 PSI
To operate the pressure governor:
Engage the pump
Open the TANK TO PUMP valve
Open the appropriate discharge valve Operate the governor
The pressure sensor must detect ________ in the pump to operate
PDP
Once the pump is engaged the Pump Boss governor is on and defaults to __________MODE.
PSI
Changing modes (on the pressure governor) is accomplished by pressing and holding the MODE button or PSI/RPM button for ______________. The indicator will display the mode selected.
3 seconds
Pressure governor presets.
PSI
Engines 110 PSI
Tankers 50 PSI
RPM.
1,100 RPM for both tankers & engines.
The pressure governor can also serve as a ___________________ in RPM MODE with the pump disengaged. Simply select RPM MODE and press PRESET.
High idle control
Discharge pressure at idle.
30-40 PSI
If your water supply runs low the governor will attempt to maintain PDP by increasing RPM. If the pump cannot maintain at least _______________, the governor will return the RPM to idle. This is a safeguard to prevent cavitation.
30 PSI PDP
When residual pressure gets low (below ___________), the governor may sense a supply problem and return RPM to idle.
10 PSI
Minimum hose inventory for JFRD engines.
6” Soft intake- 25’ 5” (LDH) - 1,000’ 2 1/2” - 1,000’ 1” Booster line- 200’ 10’ Hard suction- 2 Sections High Rise hose (2 1/2) - 195’ ~ 3 sections of 65’ length Apartment load- 100’ of 1 3/4” Two 200’ pre-connected cross lays. - ‘200 each.
All other 1 3/4” will be determined by the Company Captain.
Wildland hose 1”- 200’
JFRD’s primary supply hose.
5” hose with Storz quarter turn coupling.
When connecting 5” hose to the intake valve, never place a ______________ in the hose. It may uncouple upon charging.
Right hand twist
If a hose clamp is used when laying out, the clamp must be placed close to a coupling on the _____________ side
Supply
The 5” hose will extend horizontally when charged, so always clamp at least __________back from the tail board.
25’
A Supply line connected to a hydrant at incident scenes shall be _______or larger
5”
When loosening the hose clamp do not position yourself on the ___________ side of the clamp.
Hinge
A flow of 1200 GPM has 10 PSI friction loss per 100’ section of hose. ___________ GPM is the practical volume limit of 5” hose.
1,600
Pumping 5” hose requires two-stage pumps to be operated in ______________.
Volume
The 6” Ball intake valve (BIV) will flow in excess of _________________GPM.
2,000
The maximum safe flow through a 2 1⁄2”hand-line is ________GPM.
300
2 1/2” Smoothbore stacked tips nozzle can achieve the following GPM at 50 PSI.
1” - 200 GPM
1 1/8” - 250 GPM
1 1/4” - 300 GPM
To compensate for friction loss in 2 1⁄2” handlines add ___________per 100’ to the PDP. This standard friction loss works equally well for fog streams or smooth bore nozzles.
10 PSI
Akron Turbojet 2 1⁄2” Fog Nozzle specs
Operates at 100 PSI NP
Adjustable flow range of 125, 150, 200 and 250 GPM.
Has a “break-apart” feature allowing 1 3⁄4” hose to be extended from the playpipe.
WARNING: Rotating the bumper fully clockwise will shut off the nozzle even if the bale is open.
“Bread & Butter” attack line of the JFRD.
1 3/4” hose loaded in a pre-connected manner.
Akron Turbojet Nozzle specs
Adjustable flow range of 30,95, 125, 150, 200, & Flush.
JFRD recommends the 95, 125, or 150 GPM setting for initial interior firefighting.
Add ______PSI to the PDP per floor when operating above ground level.
5
There are two pressure variants of the Akron Turbojet nozzle. Most engine companies carry the 75 PSI model. The Hazardous Materials Team carries the 100 PSI model because ______________.
It has greater reach.
PDP= Nozzle pressure (NP) + _____________.
Friction Loss
Akron 75 PSI Turbojet.
An initial PDP of ___________will allow the nozzle operator to select 95, 125 or 150 GPM on the nozzle and attain this flow.
110 PSI
A desired flow of 200 GPM requires an increase in PDP from 110 PSI to ____________________. Two firefighters may be required for safe handling.
150 PSI
1 3/4”
100 PSI Akron Turbojet
A pump discharge pressure of _______________will allow the nozzle operator to select 95, 125 or 150 GPM on the nozzle and attain this flow. The nozzle operator can change the GPM setting with no adjustment in PDP required.
135 PSI
100 PSI
1 3/4” Akron Turbojet
A desired flow of 200 GPM requires an increase in PDP from 135 PSI to ________PSI. Two firefighters may be required for safe handling.
175 PSI
If Jose kinks become frequent, the engineer can boost the PDP by ___________ PSI.
10-25
1 3/4”
Akron Saberjet Nozzle Specs
150 GPM at 50 PSI NP (7/8”)
180 GPM at 50 PSI NP (15/16”)
The fog stream setting will flow:
135 GPM at 100 PSI NP.
A PDP of 125 PSI will produce the above flows with 150’ or 200’ of hose.
The nozzle operator can change from fog to solid and back with no PDP adjustment required. This is because the change in GPM results in a corresponding change in friction loss (friction loss increases by 40-50 PSI when changing from fog to solid stream).
All cross lays should be equipped with a ___________ short section.
10’
GPM settings for the 1” Akron Turbojet nozzle on the booster line.
13, 25, 40, 60, @ 100 PSI
Apartment packs (100’ of 1 3/4” hose) shall be equipped with a ________________.
2 1/2”- 1 1/2” Gated wye & a nozzle.
Attic nozzles cover ____________of attic space and flow approximately 125 GPM at 100 PSI.
1,000 Sq. Ft
Maximum distance between the educator & nozzle.
When using a 75 PSI nozzle the maximum distance is 250’
When using a 100 PSI nozzle the maximum distance is 150’
Note- If more distance is required between the apparatus and the eductor use 2-1/2” hose & a gated eye.
The foam eductor requires an inlet pressure of ________________.
200 PSI
Aviation fuel is a non-polar hydrocarbon fuel very similar to kerosene. _______________ will be most effective on these fires and spills.
Mil-Spec AFFF
Foam 37 and 371 – Although these tankers respond citywide their main purpose
is to protect the _____________ which primarily stores aviation fuel. Each tanker
carries 1800 gallons of foam concentrate.
Navy Fuel Depot
CAUTION: Mil-Spec 3% AFFF IS NOT compatible with AR-AFFF and should
never be mixed. Never add ____________ to any apparatus foam tank.
AR-AFFF
Each tanker shall carry enough foam concentrate to convert the __________ gallon tank into finished
foam.
2500
Note - This calls for a minimum of 75 gallons of concentrate or 15 pails (3 gallons
per 100 gallons of tank capacity).
Engines 7, 21, and 31 also carry the Akron 250 GPM eductor and foam tube. Used with 2-1/2” hose and the 2-1/2”
Akron Turbojet nozzle, this setup allows up to_____________ between the eductor and nozzle, the educator requires 200 psi
inlet pressure.
300’
The total JFRD foam capacity is approximately __________gallons.
20,000
AR-AFFF Specs
Compatible with dry chemicals.
Cannot be used for subsurface injection.
Can be used with fresh or salt water.
2 1/2 Gallon Foam Can specs
ARC Foam
Range - 15’
Rating- 3A/20B
CO2 Extinguisher Specs
2o Lb CO 2
Range 8’
Rating 10B/C
Purple K (PKP) Extinguisher specs
18 Lb. Extinguisher
Ranger -18’ in 18 Seconds
Rating- 80 B/C
30 Lb. Extinguisher
Range- 18’ in 8 seconds
Rating- 20 B/C
Note- 30 Lb PKP Extinguishers are ‘“high-flow.” They can be identified by their red handle. Despite the increase in agent capacity, they have a lower UL rating due to the increased discharge rate.
Generators (Found on some engines.) Specs
Twin cylinder diesel motor
10 Kilowatt generator
Receives fuel from the main fuel tank and has an electric start switch on the
pump panel and dashboard.
Powers 5 scene lights.- Front, sides, & rear plus a 30-amp cord reel on the rear for fans & lighting.
Winch (on some engines.) Specs
12 VDC receptacles.
Wire rope can be extended 100
9,000 Lb Pulling capacity
Explain how drops in residual pressure can help determine if more lines can be flowed.
If the drop is less than 10%, you can add 3 more lines of equal GPM.
If the drop is from 10% to 20%, you can add 2 more lines of equal GPM.
If the drop is from 20% to 25%, you can add 1 more line of equal GPM.
If the drop exceeds 25%, you may be able to pump smaller lines only.
After stopping the valve (pump panel) at the desired pressure, turn the discharge handle ____________ degrees to lock in position.
45
Ladder pipes have a nozzle affixed to the ladder tip which may be an __________ automatic fog nozzle or smooth bore stack tips.
80 PSI
Automatic fog nozzles (such as the ones on the ladder pipe) are rated up to ___________GPM.
2,000
Note- The ladder waterway is only rated for 1,000GPM. ( Except for Tower Ladders)
Smooth bore tips range up to __________.
2”
When supplying a ladder pipe within 100’, the recommended initial PDP is _____________.
150 PSI (any nozzle)
The ladder company engineer has a digital flow meter on the ___________________.Proper flow adjustments can be made by communicating with the ladder company engineer.
Turntable pedestal
The engine will supply the ladder pipe through intakes on the side or rear of the ladder truck. Where are these intakes located?
Mid-ship turntables have side intakes.
Rear mount turntables have a single rear intake.
Note- A pressure gauge is located at each intake.
Master stream positions. (appliance also known as the deck gun)
When used from the engine, the master stream must be elevated.
When used on the ground monitor base, do not elevate.
Fog nozzle specs (for deck gun)
Nozzle pressure- 100 PSI
Adjustable flow rates- 500. 750, 1,000, & 1,250 GPM
Smooth bore nozzle specs (master stream)
Nozzle pressure- 80 PSI
Tip sizes
1 3/8”= 500 GPM
1 1/2” = 600 GPM
1 3/4” = 800 GPM
2” = 1,000 GPM.
Some engines may have a 1 1/4” tip that flows 400 GPM.
Use the following pressures for the Large Ground Monitor in addition to Nozzle Pressure.
Add 10-25 PSI for friction loss in the appliance. (For higher GPM expect friction loss to be closer to 25 PSI).
Add 25 PSI for each 100’ of 2 1/2” Siamesed hose for friction loss.
The water supply for the large ground monitor shall be ____________.
Two 2 1/2” hose lines.
Note- For safety, both lines must be attached & charged simultaneously.
Mini monitor specs.
Single 2 1/2” inlet
Flows up to 500 GPM
Hose lay in excess of 200’ will require the use of a Siamese & dual 2 1/2” hose lines
Another option is to select a lower GPM setting on the nozzle
When laying out to another engine, the preferred intake is the ___________ through the PIV or BIV. This enables the engineer to monitor residual pressure by hose contact & places the intake valve within easy reach.
Steamer
Caution- Be sure to bleed incoming air from supply hose to prevent loss of prime or governor malfunction.
Options for connecting to a hydrant.
Single 5”hose
6” hard suction hook-up. Will provide the most volume from a hydrant. Engine must ne within 10’ of the hydrant. A minimum of 2 personnel (preferably 3) must be available. 4 1/2” t0 6” adapter is required. Goal is less than one minute to complete.
Full hydrant connection. In most cases, will provide a 25% increase in water supply. can be accomplished by 1 crew member.
Single 6” soft-sleeve hose. Permits flow up to 2,000 GPM. Additional flow is negated when used with PIV. The BIV has no flow restrictions.
Try to place the engine within ___________ of the FDC.
100’
PDP for sprinklers systems is ___________.
150 PSI
Initial pump discharge pressure (PDP) for standpipes.
100 PSI
A ____________________ utilizing a gate/ball valve and PSI gauge on the standpipe outlet is required.
Remote pump operator (RPO)
Taller buildings may require 2 engines pumping in relay to achieve a working pressure to upper floors. The 1st engine pumps _________ while the 2nd engine receives the ___________ & increase pressure to achieve an adequate water supply to the higher elevation.
100 PSI
Older buildings may have a limitation on their standpipe system of ____________.
200 PSI
For drafting, the transfer valve must be placed in ______________.
Volume
Note- Once the draft has been established, switch the governor to PSI mode if supplying hand lines. The governor will not allow you to draft in PSI mode.
The maximum height for drafting is ________ measured from the water surface to the steamer intake.
25’
There is no theoretical limit to the LENGTH one can draft.
Drafting, if the surface of the water is more than _________ below the steamer, do not expect to reach full pump capacity.
10’
Drafting. The static water source must be deep enough to allow for 1’ of clearance from the bottom and ____________ below the water surface.
18”
Drafting. Shallow placement of the strainer will create a _____________ & cause loss of prime.
Vortex
Drafting. Pumps rated at _____________ must use both steamer connections to reach full pump capacity.
1,750 or 2,000
Drafting numbers.
Transfer valve- RPM
Throttle speed- 1,000-1,200 RPM
1500 GPM pumps- Limit primer to 45 seconds.
1750-2000 GPM pumps. Primer can be used for 90 seconds.
Note- Exceeding timer limits can cause the electric primer to overheat or pneumatic primers to lose air supply.
Drafting. Allow pressure to build steady above ___________ before disengaging the primer.
50 PSI
If use of a tanker basin is indicated on scene, the 1st arriving tanker will.
Drop the basin on scene , in position for the engine to draft.
Drop the low-level strainer, tarp, & 4 1/2” double male at the scene.
Place the tarp on the ground & set-up the basin.
Dump the tank water & proceed to the closest water source.
It takes __________ to dump 2,500 gallons of water from the (tanker) quick dump valve.
2-3 minutes
The chamber which directs pressurized water into the discharge manifold.
Volute
When pumping beyond 50% of the pump’s rated capacity, you must be in ______________.
Volume
