Engineer SOG's Flashcards
(47 cards)
What are the steps to engaging an apparatus pump?
– Bring apparatus to a complete stop
– Place transmission in neutral
– Apply parking break
– Activate pump switch from Road gear to pump gear
– Check in cab – shift indicator lights should be on
– Wait 4 seconds
– Place transmission and pump kit or, usually drive or fourth
– Check speedometer to see if it shows some value
– Arrive at operators panel to prepare for operation
– See transfer valve is in desired position
How many degrees in a turbocharged diesel engine rise if it is suddenly stopped after a hard run?
As much as 100°
What are the steps if the green indicator light is not on after engaging pump?
First put the transmission in reverse, and then back to neutral, then into drive.
What is the procedure for shutting down hose lines?
– Reduce throttle slowly to an idol – Turn off pressure relief device. If equipped – Unlock and close discharges – Disengage pump – Turn off hydrant or incoming supply – Open drains to relieve pressure
Procedure for charging hose lines
– Start with apparatus in pump at idle speed
– Ensure that hose line is connected and/or is completely free of those bed
– Discharge all the way open when requested. Reply water is on the way
-Twist handle 90° right or left to Locke if applicable.
– Advance throttle to to sired setting
Procedure for shutting down one line of multiple lines?
– Unlocked discharge and slowly close discharge
– Adjust throttle and relieved of ice as needed
Procedure for operating a one and three-quarter and 2 1/2 inch line simultaneously
– Make sure pump is engaged at idle speed and a continuous water supply established
– Record static pressure on the intake/vacuum gauge
– Slowly open the discharge for the first line that reports ready for water. Reply water on the way and bleed air from the line
– Lock the discharge
– Establish standard operating pressure for the line that is charged
– When the second one is called to be charged. Slowly open the discharge valve while simultaneously adjusting the throttle to maintain the highest pressure required in line. The discharge for the lower pressure requirement line will have to be gated down to maintain the lower pressure for that line
Calculating friction loss for hose lines of equal length
– When the diameter and GPM are the same, but the length varies. Charge the higher pressure requirement line and gate back the line with the lesser pressure requirement. Locking discharges are particularly important when you gating down a discharge valve
How far should the tank fill/recirculator valve be opened when pumping from the tank of an apparatus?
No more than 1/2 inch. The pump may cavitate when the water level drops below half of the tanks capacity. All that is needed is 10 to 20 GPM to keep the pump cool
Procedure for making a transition from tank water to a continuous supply
– Connect the supply line to an intake. The pump panel side would be the preferred side.
– Open intake bleeder valve
– Call for water. Or, if it’s a soft suction connection then proceed to hydrant and open fully.– Clothes bleeder valve wants air is evacuated from the soft suction hose
– Set the pressure relief device
– Fully open intake valve then immediately close the tank to pump valve
– Adjust pump pressure – throttle – to appropriate setting
– Re-adjust relief device as needed
– Begin refilling the apparatus tank by opening the tank fill valve. Monitor the intake/vacuum gauge to ensure it does not fall below 20 PSI
Connecting soft suction hose to a hydrant
– Position apparatus to minimize kinks in the soft suction line while keeping the roadway free for emergency traffic.
– Bring apparatus to a stop and apply parking brake. Engage apparatus pump
– Grab gate valve And soft suction line and hydrant wrench from side panel and proceed to hydrant
– Remove 4 1/2 and 2 1/2 inch cap And momentarily open and then close the hydrant to flush and ensure that the hydrant is operational
– Connect gate valve and the soft suction to hydrant
– Connect soft suction to appropriate intake valve and open air bleeder
– Ensure that the gate valve is closed and open hydrant for what
– Close bleeder valve once air is evacuated from soft suction hose
– Note the static pressure for available water calculation
Making a hydrant connection at close range
If it is not possible to position the apparatus optimally at 20-22 feet away from the hydrant, or would result in blocking a roadway
– Position apparatus so that the hydrant is about 1–2 feet offset from the apparatus intake to be used
– Set parking brake and engage pump
– Remove soft suction and hydrant wrench from the panel side closest to the hydrant and extend soft suction line to hydrant
– grab LDH spanners
– Retrieve the second soft suction line and remove the hydrant adapter
– Connect both so suction lines ensuring that the Stortz locks have engaged
– If the apparatus intake is closer than 8 feet to the hydrant, the hose will have to be looped under the truck. The hose coming off of the hydrant will have to be run under the apparatus.
– If farther than 8 feet, the loop will still need to be made but will not run under the apprentice
Connect to the intake tight enough ensuring that the Stortz locks have engaged
– Open air bleeder valve on intake
– Fully open the hydrant
– Remove any kinks that might appear
– Close bleeder valve on intake ones air is evacuated from the line
Making a blind side hydrant connection:
– position the apparatus front bumper less than 10 feet short of the hydrant
– set parking brake and in gauge pump
– remove the soft suction and hydrant wrench from the panel opposite side of the hydrant and remove the hydrant adapter
– Connect the hose to the intake on the opposite side of the hydrant and open the bleeder valve. Ensure that the Stortz locks engage
– Poll the other end of the connected hose around towards the front of the apparatus and place on ground
– Retrieve the LDH spanners and the other soft suction line and hydrant wrench from the hydrant side of the apparatus
– Place hydrant wrench at or near hydrant
– Connect the non-hydrant adapter and of the soft suction line to the end of the first line that was placed on the ground in front of the apparatus. Ensuring that the Stortz locks are engaged
– Proceed to the hydrant with the soft suction line that has the hydrant adapter connected to it
– Remove the 4 1/2 inch cap and momentarily open and close the hydrant to ensure that it is operational
– Connect the 2 1/2 inch gate valve and close the valve
– Connect the soft suction to the hydrant and open fully
– Remove any kinks that might appear
– Close the bleeder valve once air is evacuated from the lines
– Note the static pressure for available water calculations
Flushing intake and discharge relief valves:
The purpose of flushing relief valves is to flush out any sand, sediment and foreign matter that can prevent the relief valve from operating properly. This should be done after pumping any water except clean water from a municipal water system. Also, anytime a relief device is sluggish in operation and as a routine maintenance on a weekly basis.
Flushing the discharge relief valves for E– 79 and ladder 79:
In gauge pump, circulate water by opening the tank to pump and tank fill valves and then bring the pump pressure up to 150 psi. With the four way valve – the on and off lever –in the off position, remove the strainer and clean the screen with a garden hose along with the tiny hole in the end of the rod past the screen; compressed air may have to be used. With the screen still out, turn the valve on and off slowly several timesto flush clean water through the pilot valve assembly.
– With the valve off, reinstall the screen only hand tight and turn the valve on and try to set relief valve for operation. If this fails, refer to Waterous maintenance instructions. When finished, turn the pilot valve adjustment knob to a preset pressure of 150 PSI
Setting Waterous discharge relief valves for E – 79 and L – 79:
Before setting of the relief valve, the hose lines must be up to desired operating pressure
– Turn on the four-way valves. If the pressure drops, turn the pressure adjustment knob clockwise until pump pressure returns to prior setting. The relief valve is now set. If the pressure does not drop on turning the four-way valves on, then the relief valve is set at or above your operating pressure.– To set: turn adjustment knob counterclockwise one half turn at a time slowly, until the pressure gauge drops about five psi. Now, gradually turn the adjustment knob clockwise one half turn at a time, until the pressure gauge returns to the desired pump pressure. To check the operation of the discharge really fell, do so by raising the pressure by increasing the RPM instead of slamming shut the tank fill valve.
(Note: to prevent minor pressure searches from opening the really felt, you may set the valve five PSI above your intended discharge pressure. If your desired pump pressure changes, the relief valve will need to be adjusted to the new pump pressure.)
Setting intake relief valves:
– Stortz intake relieve device:
– Stortz intake relief valves are located at the bottom side of most gated intakes. Most require an Allen wrench to adjust. The depth of the screw as compared to the casting will determine the setting. The settings should be set to match the internal really felt if so equipped to 100 psi
Setting internal pump intake relief device:
– Internal pump intake relief valves are built into the pump at the manufacture. Their adjustment location will vary. The adjustment is done by turning a knob with an indicator that points to a numerical setting.
– Intake relief valves settings for single or multiple apparatus operations will be adjusted to 100 psi. This will prevent your pump discharge pressure at an idol from going over 140 psi. A net pump pressure of 40 psi at an idle and incoming pressure above 100 psi from a hydrant or an apparatus will keep your idol pump pressure at 140 psi. And adjustment of the intake relief valve higher than 100 psi may allow your pump pressure at Idle to exceed the required pump discharge pressure of certain hose layouts.
Dual pumping:
This involves a second in apparatus forward laying to a position near the first in apparatus. They are frequently called upon to supply the first in unit which usually is operating from tank water. In the past, this meant connecting and LDH from the discharge of the second in unit to the intake of the first in – scene – unit. This arrangement will work only as long as no attack lines are used off of the second in unit. Attack lines require higher pressures then supply lines, so the result is that too much pressure is applied to the first in unit and it’s attack lines.
Connecting intake to intake with LDH:
This is the preferred method because both apparatus will be supplied at hydrant pressure and both can operate attack lines within the limits of the available water supply. In addition, a failure of one pump will not affect the operation of the other.
– The second in engineer connects the LDH supply line into one of the intakes, ensuring that the Stortz coupling locks are engaged, Opens the air bleed valve, and calls for water from the hydrant firefighter.
– Close the bleed valve after the air is expelled, and fully open the intake valve and record the static pressure.
– Connect two 25 foot LDH pony lines together between both truck intakes
– First in engineer opens the bleed valve on the Stortz intake and signals ready for water
– First in engineer then closes tank fill valve after tank has Reafield completely
– Both engineers should continue to monitor their compound – intake-gauges and not add any lines after the residual pressure reading reaches 20 PSI
Supplying a standpipe or sprinkler Siamese:
Most Siamese connections are within 150 feet of the nearest hydrant, but some are not. This procedure is designed to work in either case, but always positioning the apparatus within reach of the Siamese 150 feet and then hand stretching LDH if necessary. – Standard pump pressure should be 150 psi for fires from ground level to 10 stories, and 180 psi for fires located above 10 stories. It is our intention to pump into sprinkler and standpipe systems, even if they are already supplied by a stationary fire pump. The reason for doing this is to ensure adequate pressure and supply. The building fire pump should shut down automatically when our pump pressure exceeds 100 psi, and will resume operation should our pump fail. Two-stage pumps should be left in volume mode for this operation. – Position the apparatus to connect soft suction LDH pony line to hydrant if the Siamese is within 150 feet of the hydrant. If the Siamese is more than 150 feet away from the hydrant, position apparatus within 150 feet of the Siamese. – Set parking break, engaged, open tank to pump, and partially open tank fill valve. – Deploy one 2 1/2 inch semi – Minuteman lines to the Siamese and make connection. If he will be charging the sprinkler and standpipe systems, the first line should always go to the sprinkler Siamese – Return to apparatus, notify command, and charge the line with tank water – Open intake air bleed, stretch LDH soft suction to hydrant if within 25 feet, and skip to step seven. If further than 25 feet, bypass and proceed to step six. #6-Pull a 100 foot section of LDH from hose bed. Disconnect coupling, attach to intake making sure that locks are engaged, and open air bleed. Stretch other end to the hydrant #7-Remove the 4 1/2 inch, open and then close hydrant to flush and ensure the hydrant is operational. Connect LDH to hydrant, and fully open hydrant valve – Close bleed valve when air is expelled in fully open intake valve – Close tank to pump valve and a chest pressure back down to previous level. – Deploy second 2 1/2 inch semi – Minuteman lines to standpipe Siamese – if present – or second sprinkler intake if no standpipe is present. Make connection – Return to apparatus, notify command, and charge the second line – If a third 2 1/2 inch line is available, console command and connect to Siamese as instructed *Siamese connections are sometimes hidden in shrubbery for may have damaged threads or frozen swivels. If a standpipe cannot be located, or the threads are damaged, connect to the system through the next closest discharge outlet. Usually found in the stairwells. Attach a 2 1/2 inch double female to the discharge outlet, attach the line, and open the valve. For a frozen swivel. Connect a double mail, a double female, and then the 2 1/2 inch line
Operating the emergency pump shift override:
This procedure is intended to be used when the pump fails to engage through normal procedures.
– For engine 79 there will be an electric shift switch on the dash. This switch engage is the pump. During emergency override you always want the normal pump switch in the engaged pump position, even though it has failed to engage the pump. This prevents the pump from dis engaging if it becomes operational while in override.
Because the transmission may be in first gear instead of drive here fourth. This depends on if the high gear lock has failed which locks the transmission and drive gear, and not first gear. If this is the case, then throttle Will have to be advanced enough to allow the transmission to shift to a higher gear, up to fourth, to build sufficient pump pressure.
– Place transmission in neutral
– Activate normal in cab pump switch to engage pump
– Pole left handle to disengage electric shift and operators panel
– Push in the right handle. (Push for pump)
– Place transmission in Drive
– From the side of the truck, visualize the drive shaft between the transmission and transfer case turning.
If the driveshaft is not turning, the shift to pump did not engage and advancing the throttle will cause unwanted movement of the apparatus
– If the pump fails to engage, disengage by reversing steps five through one and repeat the procedure
(about 20% of the time, the gears in the transfer case do not match properly and this fails to engage pump. Repeating the procedure almost always fixes the problem)
Air operated pump override procedure: E – 71 through E-74, and T – 75
– Place pump shift lever in cab to the pump position
– Return to operators panel and activate – push in – the lever for the emergency bypass
– Place transmission in Drive or pump gear
– Verify the driveshaft between the transmission and transfer case is turning. If not, disengage and repeat steps one through three.
*Do not advance throttle if driveshaft is not turning!
– Note: to practice emergency procedures with an air shift, the pump shift lever in the cab must be in the middle position between pump and road position.
– Sometimes an engine will not shift into the pump gear fourth, when engaging the pump, but will engage in first gear. if this happens, the driveshaft will turn very slowly and the speedometer will not read the average 15 to 20 mph at idle. If no rise is seen on the speedometer, the pump has not likely engaged. If a rise is seen, the pump can be operated normally, except that it will shift up through the gears as the panel throttle is raised.
Drafting procedures and set up:
This procedure calls for the hard suction to be connected together and placed in the water before being connected to the apparatus. if drafting from a swimming pool, it is not necessary to lay the hose on a roof ladder. A minimum of two people should perform this procedure.
– If the drafting site has been sized up by earlier arriving personnel, or if the operators for Milear with the site, then the apparatus maybe driven to within 40 feet without a forward spotter. Otherwise, the passenger should walk ahead of the apparatus. If and when it must traverse unimproved surfaces, in order to check for hazards.
– Once in proximity of the tentative site, and if it hasn’t been sized up earlier, the spotter should check the site to determine if the apparatus can be safely positioned close enough to the water source, and that the depth of the source is sufficient. Minimum acceptable depth for drafting is 3 feet.
– Remove both sections of hard suction line and connect together on the ground. Use a rubber mallet to tighten the couplings and minimize air leaks.
– Get the water operations rope throw bag and connect the end with the carabiner to the suction strainer. Extend the rope to near the pump panel for later attachment.
– Get the 14 foot roof ladder from the truck, extend the hooks so that they face down, and push the ladder into the water hooks end first. The hooks will act as a slide and keep the strainer further off the bottom. Return the latter rack to its upright position.
– Walk the suction hose into position and lay it on the submerged latter. Be sure that sufficient hose remains out of the water to reach the intake once the truck is in position.
– Using a forward spotter, pull the apparatus into a position parallel to the drafting source and within reach of the suction hose.
– Remove the gated intake valve and inspect the intake screen to make sure it is intact and in position. If the screen is damaged, remove it before proceeding.
– One person will then lift the suction hose to the level of the intake while the second person makes the connection and tightens the coupling with a rubber mallet to minimize air leaks.
– Visually check to make sure all intake, discharges, line drains, tank fill and tank to pump valves are completely closed.
– Engage the pump
– Put the transfer valve if equipped in the volume or parallel position, and turn on the auxiliary engine cooling system.
– Raise engine RPM to a high idle 1000–1200 to cope with the amperage draw of the primer pump motor.
– Open the tank to pump and tank fill valves for about five seconds to allow tank water to fill the lower portion of the pop and a lead in obtaining a prime. Close both valves before engaging primer pump.
– Engage the priming pump, but no longer than 30 seconds for up to a 1250 GPM pump, or 45 seconds for a larger pump. Hose will sag as it fills with water. Priming pump will begin discharging water. Sound of the priming pump will change, and the fire pump will begin showing pressure on the main discharge gauge.
– If you will not be immediately pumping water to the scene, then partially open the 2 1/2 inch discharge that you previously removed the cap From. Allow water to flow onto the ground at the existing high idle setting. This will prevent the prime from being lost.
– When ready to pump to the scene, Open the LDH discharge and then close the 2 1/2 inch you were using to keep the prime. Said initial pump pressure at 100 psi for a hose late of 500 feet or less, or 150 psi for a hose lay between 500-1,000 feet. Both of these settings will deliver approximately 1000 GPM to the apparatus on scene with 50–60 PSI intake pressure. and just as instructed by the scene engineer.
– Once operating at pressure, the rope attached to the strainer can be used to lessen the depth of the strainer if needed to prevent sand from being drawn into the park. To do so, pull the rope along the length of the host until the strainer and bows up slightly. When the depth is correct, wrap the rope around the lugs of the hard suction coupling at the pump panel. Crossing back and forth in the same manner that you would attach a rope to a boat cleat, and apply a half hitch.
