2008 Pierce Pumper Manual PM-P-OM260
Contents
1. 3 29 3 12 3 RESUME DISCHARGE OPERATION 26 2 ed ode en poteva cede vaga ee AOE aee aaa 3 29 TWO STAGE PUMP OPERATION OPTIONAL eene nennen nnn nn nnne nnn th ntn sth 3 29 3 13 1 SELECT EITHER VOLUME OR PRESSURE MODE eode fati mr nr peo i Rescue 3 30 3 13 2 MODE SELECTION WITH PRESSURIZED SOURCES csssscscsssscsesesscsesssscsesesasesesecsesecacsesecaesecaesesecaeaes 3 30 3 13 3 PRIMING A TWO STAGE PUMP nate tere ctetu ot beatus iue ze ML ended cect 3 30 ENGINE STATUS DISPLAY Moin acre ndo tbe e n mt D utc nme tese a 3 31 ENDING WATER FLOW OPERATION tic de Ra iur deni ts tint intra 3 32 3 15 SHUT RING OPE WATER FLOW usa iuit utet tait tm cadet 3 32 3 15 2 DISENGAGING THE PUMP DRIVELINE DRIVEN PUMP 3 32 3 15 3 DISENGAGING THE PUMP STATIONARY OPERATION een 3 33 3 15 4 DISENGAGING THE PUMP PUMP AND ROLL 3 33 3915 5 SECURINGIPUMP SYSTEM ctl deseo ini ola onte a iato nn aut Mode La 3 33 ii Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved TABLE OF CONTENTS 3 16 OPERATING FROM A STATIC DRAFT WATER SUPPLY s cccscsssscsssscseseseeseststeaescsteneasesaesesecassecesasseeesaseneatans 3 34 SECTION 4 MAINTENANCE 4 1 INSPECTION CLEANING AND MAINTENANCE cscssescsessescessscecssseseeaesecarsesecarsteecacsteneacstensacseseeasaeeesaeseeanaeaeses 4 1 4 1 1 MAINTENANCE SCHEDULE amie l2. SED x FL ER enu WAT RT RA ORE YR TRE 3 1 3 1 1 STEPPING AND WALKING SURFACES 3 1 3 1 2 COMPARTMENT DOORS tide innein cedes boe detta ea Ra eue kn an dite adn e VA Ran c dea we E REA eA 3 2 3 1 3 HOSE BED COVERS iii iii E E E aaa aa a ai aiaia 3 2 3 1 4 FOLDING STEPS OR PLATFORMS 0ccccccccceeeeeceeceeeecececseceauececeeseaeaeesesseceauedeeeeesaeaueseeseseanaeeeessaeaateees 3 2 3 2 HOSE iiic bee s ra Cel e u db a rae Eg ede Ec aeuo Do T 3 3 CDM MILleize uec d 3 3 3 2 2 HOSE CHUTES SE Ces ie a a a eT PD Pre 3 3 2 HOSEBEEDSc delincuente ML E ae UE Sante Ut 3 3 3 2 4 HOSE DEPLOYMENT 2 dei inest E c siete de eoe Che ehe de uda vehe ese eve de ia dae lee e ebur tnc eva bd taeda abdo gae sh aab pne 3 4 3 2 5 HOSE CONNECTIONS 3 5 3 3 POSITIONING THE APPARATUS 3 5 3 9 1 EIRE SCENE POSITIONING 22 3 5 dde nantais adu e dme AD 3 5 3 3 2 POSITIONING ON ROADS 3 5 3 3 3 AGH TING iode a
3. A DANGER ALWAYS OPEN Drain Bleeder Valve BEFORE removing inlet or Discharge Cap Discharge lines can trap pressure if the valve is opened and left closed Discharge cap under pressure will blow off with explosive force Exploding Cap will injure or kill Figure 3 12 Drain Bleeder Valves 4 PULL OPEN PULL TO OPEN 09 o 1140 21 2 Open Drain Bleeder Valve Pull up or turn Drain Bleeder Valve counterclockwise to the left to OPEN Air pressure can be trapped between the Discharge Valve and the Discharge Cap You must bleed off this pressure BEFORE the cap is removed Otherwise any trapped air pressure can blow the cap off with great force and injure someone 3 Open Discharge Cap Vent if One is Provided Some Discharge Caps have a pressure release vent on the cap If cap has a vent OPEN vent before removing cap 4 Remove Discharge Cap Remove the Discharge Cap after you are certain that pressure has been bled from behind it You cannot tell by how hard the cap rotates whether pressure exists or not BEFORE removing Discharge Cap OPEN the Pressure Release Valve or Drain Bleeder Valve to make sure that trapped air pressure escapes 5 Connect the Discharge Hose Connect the discharge hose to the discharge connection 6 Adjust the Discharge Swivel If the discharge connection has a swivel fitting move the swivel so the hose points AWAY from the pump operator s area 7
4. Rights Reserved SECTION 3 OPERATION 3 1 Approaching the Apparatus 3 1 4 Stepping and Walking Surfaces ALWAYS be careful when climbing up or down to avoid a slip and fall and potential injury to yourself and others Enter and exit cabs slowly deliberately and carefully NEVER jump to ground You can injure yourself ALWAYS maintain three points of contact when climbing up or down Keep contact with one hand and two feet or two hands and one foot Use steps hand holds or sturdy features on the apparatus ONLY grasp or step on items appropriate for climbing on or firmly attached objects Keep steps and hand holds in good repair and free of grease mud dirt fuel ice and snow Make sure all attaching bolts and hardware are tight thus eliminating any movement of steps and hand holds NEVER step or climb on any vehicle surface unless it is slip resistant and hand holds are provided Replace slip resistant material when worn All surfaces intended for stepping or walking are designed or treated with slip resistant material your department specified NEVER step or walk on surfaces not designed for stepping or walking such as e Chromed surfaces or objects Painted surfaces Hose rollers Compartment doors or hatches e Valves e Controls Inlet or Outlet Connections 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 1 OPERATION 3 1 2 Compartment Doors NEVER step on open
5. PRESSURE GOVERNOR OPERATION 3 19 3 5 6 CONTROLLING ENGINE SPEED WITH MULTIPLE CONTROLS c ccccscscscsssscsesscscsesscscsececsesececstsecacaceeeeeaes 3 20 DISCHARGING WATER nine tie aan niet 3 20 3 6 1 CONNECIING ATTACK LINE HOSE satin tie ion nid eon eat 3 20 3 6 2 C HARGINGILINE Lis acoso ne Rene tates sauce lv anus EE ED EU 3 22 DISCHARGING FOAM Set een ne ntm nee terne tn ae nn a etais 3 23 CHANGING FROM TANK TO EXTERNAL PRESSURIZED WATER SUPPLY WITH GATED INTAKE VALVE 3 23 3 901 2G ONNEGT INTAKE HOSE RL anne atacan ena oett cada an nn 3 24 3 8 2 CHARGE THE INTAKE LINE PRESSURIZED SUPPLY 3 26 SUPPLY THE PUMP ne ULLA tu ARM CM TERI IL I EIL 3 26 PUMP PRIMING PROBLEM SOLUTIONS eene eren ennt enne nennt nennt ttn tasa ata se snae asas nans a 3 27 3 9 1 CONTROL VALVES HAT LEAK uu nila toate 3 27 MONITORING INTAKE PRESSURE eene tnn tenente nennt tenete ita enr tasas a tasse sa toss asa sata snas nenene 3 27 REFIL ING THE dece Ett 3 28 CHANGING FROM TANK TO EXTERNAL WATER SUPPLY WITHOUT GATED INTAKE VALVE 3 28 3412 1 STOPF EEOWING WATER d ddnde td oai bic nat Oa dann a bot tL oe bud 3 28 3 12 2 IF YOU ARE CONNECTING TO A PRESSURIZED SUPPLY CHARGE INTAKE LINE
6. PUMP WHEN LIGHT IS FLASHING lt gt T 2007 Pierce Manufacturing Inc Part No PM P OM260 1207 Operation amp Maintenance Manual TABLE OF CONTENTS Pierce SECTION 1 TO THE OWNER 1 1 WHO SHOULD USE SERVICE AND MAINTAIN THIS VEHICLE eere eren nennen niente n innate 1 1 1 2 WHAT To Do IF YOU LACK KNOWLEDGE eene nnne nennt nennt nennt raten ttn ta sets ines soins ss sn snis sn sos sodas 1 1 1 3 CAUTIONS WARNINGS AND DANGERS eerte nennen nnn nennt netta tet sess snas sss anene eneen soos 1 2 1 3 1 SAFETY WARNING LABELS nue umo aidant 1 2 1 47 mme 1 2 1 5 DAILY CHECKS einen nee un nn ti ecrans ner io 1 3 146 CUSTOM PRODUCTS RADI EAE RE UR DEG CR EHE etat nr URL nets nent nn 1 3 1 7 PROFESSIONAL TRAINING AND STANDARDS ORGANIZATIONS 1 3 1 8 SAFETY DEFECT REPORTING Sn annee canette et ue tennis 1 4 1 9 KEEPING YOUR KNOWLEDGE REFRESHED AND UP TO DATE eese n tnis 1 4 SECTION 2 BEFORE PLACING IN SERVICE 2 1 CREATE PUMP CHART a E T 2 1 2 2 CHECK ADJUSTMENT OF INTAKE RELIEF VALVE 2 1 SECTION 3 OPERATION 3 1 APPROACHING THE APPARATUS 2
7. e Group 2825 V 002 Detroit Diesel Electronic Fire Commander in Service Manual 1 Select Throttle RPM Control Mode 2 Adjust Desired Engine Speed RPM Press the red button to cancel the current mode and return the engine speed to idle The red button also serves as the Emergency Stop Practice using the Emergency Stop 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 19 OPERATION 3 5 6 Controlling Engine Speed with Multiple Controls Transferring engine speed control between Hand Throttle and Pressure Governor can cause a jump in engine speed Engine speed changes can cause discharge water pressure spikes Spikes in discharge pressure can cause hoses to kick with great force causing injury Some apparatus have both a Hand Throttle and a Pressure Governor The Throttle Selector Switch determines which control is ON If Hand Throttle is selected you will control engine speed manually If Pressure Governor is selected the Pressure Governor controls engine speed ALWAYS return the control you are not using to the IDLE position 3 6 Discharging Water Figure 3 11 Typical Discharge Valves NO 1 DRIVER 7 amp SIDE DISCHARGE MT a 015 0020 0033 0005 3 6 1 Connecting Attack Line Hose 1 Close Discharge Valve CLOSE Discharge Valve to keep water from flowing once the Discharge Cap is removed 3 20 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved
8. D 3 4 2 PTO Driven Pump 3 4 2a To Engage the Pump Stationary Operation 1 Shift Transmission into Neutral N Before engaging a PTO driven pump for stationary operation shift the transmission into NEUTRAL N Vehicles with a PTO driven pump display a Pump in Neutral label Pull Parking Brake to Apply If you fail to apply the parking brake safety interlocks prevent operation of hand throttle or pressure governor 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 9 OPERATION NOTE If the parking brake is released during pump operation the hand throttle or pressure governor is disconnected AND the engine speed falls to IDLE Water pressure to the hose will drop The pump speed will then be controlled only by the driver s throttle pedal That is the manual override 3 Chock the Wheels Block both front and rear of tire using wheel chocks Begin pumping water immediately after engaging pump Recirculate water if hoses are not ready to keep water cool Running pump dry for more than a few minutes will cause damage 4 Engage the Pump Activate the PTO Pump Shift control located on the driver s panel in the cab 5 Observe Pump Engaged and OK to Pump indicator lamps The PUMP ENGAGED and OK TO PUMP indicator lights turn ON when PTOis engaged AND Pump is spinning 3 4 2b Engaging PTO Driven Pump when Vehicle is Driving Optional Pump and roll operation is dangerous NEVER ride o
9. That means engine failure is possible at any moment Read and study the engine manufacturer s operations manual so you know how to react Practice your reaction to all different kinds of failure You need to be prepared in advance so you can react properly in an emergency Fire apparatus programming does not allow a critical engine failure to automatically stop the engine The engine will continue to run until it self destructs or fails It is your judgment call to balance the risks of damage to the engine with the need for the fire apparatus to remain operational 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 31 OPERATION If possible replace the apparatus with another apparatus RIGHT AWAY if this light comes on Check Engine Light If the Check Engine light turns ON the engine s ECU detects a non critical error condition Immediately check all gauges at the pump panel and compare with the readings of those in the cab Compare both readings to normal operating parameters This will help you make the decision to continue to run the apparatus or replace it with another If the Check Engine light remains ON schedule the engine for maintenance Check Transmission Light The Check Transmission light turns ON if the transmission s control unit detects a non critical error If the Check Transmission light remains ON schedule the transmission for maintenance 3 15 Ending Water Flow Operation 3 15 1 Shutting Off
10. 1 2 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved THE OWNER 1 5 Daily Checks At start of shift follow your department s apparatus check It is critically important that you turn each control valve gate or switch etc ON and OFF or OPEN and CLOSED You want to make sure they work now You don t want to find out at a fire ALWAYS check the controls you rarely use That also reminds you of their location and their function If you find a control whose function you do not know then right away find out what it does Every control serves a purpose You must know the purpose and how to use the control Pierce Customer Service is always available to help you and answer your questions Call 888 974 3723 1 6 Custom Products Your department developed specifications for this fire apparatus It purchased a Pierce apparatus that is builtto meet those specifications The information in this manual will be generic at times Due to the highly customized nature of each Pierce fire apparatus the exact location of each component in the pumper system will vary This manual describes basic controls Not every apparatus will have all controls Some will have extra controls as determined by each fire department s specification Pictures describe typical components or devices Actual parts might vary from those pictured You must learn the location and function of all controls switches gauges valves inlet
11. adder CUm LU Ur DAR 3 5 3 3 4 CHOCK THE WHEELS 3 6 3 4 PUMP OPERATION ciii r etra ka ce cea eub a Yes oFE ca kn FE TEE po aed cc Gne GEVERC oio aERET YR eC a dE Ne YR dun CERE EXE MR E RETE TR CA EE SEA 3 6 3 4 1 DRIVELINE DRIVEN PUMP 3 6 3 4 ENGAGE THE PUMP 3 6 3 4 1b MANUAL PUMP SHIFT OVERRIDE OPTIONAL iii 3 8 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers TABLE OF CONTENTS 3 5 3 6 3 7 3 8 3 10 3 11 3 12 3 13 3 14 3 15 3 42 PTOSDRIVEN PUMP maratar anartan aaan aaa te adore teles tesa pes eb Mt lea 3 9 3 4 2a ENGAGE THE PUMP STATIONARY OPERATION een 3 9 3 4 2b ENGAGING PTO DRIVEN PUMP WHEN VEHICLE IS DRIVING OPTIONAL 3 10 3 4 3 SUPPLY WATER direct ald sab RO Pt lema seit pa EUR ion amr con Ame as 3 11 ADJUSTING THE PUMP PRESSURE eit peer eoe cato e Sa dada epu 3 15 3 5 1 DETERMINE DISCHARGE PRESSURE 7 eb ae cai tee tet aem ca e te 3 15 3 5 2 ENGINE SPEED AND PUMP PRESSURE 3 15 3 5 3 CONTROLLING ENGINE SPEED APPARATUS NOT EQUIPPED WITH A PRESSURE GOVERNOR 3 15 3 5 4 CONTROLLING ENGINE SPEED PUMPING PRESSURE GOVERNOR OPERATION 3 18 3 5 5 CONTROLLING ENGINE SPEED NOT PUMPING
12. fittings can burst without warning Burst fittings can injure or kill Hose fittings are critical to safe delivery of water to a fire Treat hose connections with care and inspect regularly 3 3 Positioning the Apparatus 3 3 1 Fire Scene Positioning Operate apparatus away from burning embers that can be sucked into the air intake system Burning embers in the engine air filter can cause engine fire Engine fire can cause property damage serious injury or death Heat from a fire can damage electrical systems rubber seals and gaskets and plastic components Always place apparatus upwind from the fire and at a safe distance away from flames Diesel engines consume as much as 1200 cubic feet of clean air every minute Hot embers sucked into the air intake can cause the air cleaner element to ignite Although Pierce Custom Chassis are equipped with ember barriers composed of mesh screens or perforated metal they are not a foolproof guarantee of protection Always leave a way out Always position the apparatus in a location that allows a quick retreat if conditions change Always park upwind of the fire Never park the apparatus downwind of the fire Always avoid electrical lines Never park under electrical lines 3 3 2 Positioning on Roads Position the apparatus so that it protects emergency personnel Many departments choose to park the apparatus at an angle so that personnel can work behind the vehicle out of the direct
13. for use during the annual testing and certification of the pump Master gauge testing and calibration should only be performed by trained maintenance personnel NEVER remove plugs in these ports except for test purposes 1 Test Master Gauges Annually The VACUUM test port leads directly to the Master Intake Gauge line The PRESSURE test port leads directly to the Master Discharge Gauge line Use certified test gauges to check and calibrate Master Gauges 4 6 Pumpers 2007 Pierce Manufacturing Inc Rights Reserved Adjusting the Pump Pressure 3 15 Annual Testing 4 3 Approaching the Apparatus 3 1 B Back Flushing 4 3 C Cautions M 1 2 Changing from Tank to External Pressurized Water Supply with Gated Intake Valve 3 23 Changing from Tank to External Water Supply without Gated Intake Valve 3 28 Charge the Intake Line Pressurized Supply 3 26 Charging Line 3 22 Check Adjustment of Intake Relief Valve 2 1 Chock the Wheels 3 6 Compartment Doors 3 2 Connect Intake 3 24 Connecting Attack Line Hose 3 20 Control Valves That Leak 3 27 Controlling Engine Speed with Mu
14. shown on right SUINTAKE RELIEFIVALVE POM0016 0017 0018 All pumps have a relief valve on the intake side Figure 2 1 It prevents a pressure spike in intake water from passing to hoses through the discharge side of the pump The intake relief valve is a pressure regulator If intake pressure goes over the pressure setting the valve opens and allows water to flow out the relief outlet Some departments choose to connect a hose to the relief valve outlet to direct the water discharge away from the apparatus Pressure surges in this hose can occur without warning 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 2 1 BEFORE PLACING IN SERVICE Secure unattended hoses Water discharged from hose will cause hose to whip violently Whipping hose can injure or kill To adjust this valve for desired pressure the intake pressure to the pump must be higher than the normal static pressure of the municipal water supply The best method to adjust the valve is to use another pumper to supply water at the desired pressure 1 Increase inlet pressure until the master inlet pressure gauge reads the relief pressure you want 2 With a wrench slowly open the adjusting screw on the valve until water starts to flow from the valve outlet 3 Slowly close the adjusting screw until the water stops flowing Read the valve manufacturer s documentation for complete instructions 2 2 Pumpers 2007 Pierce Manufacturing Inc
15. the water supply from the tank is stopped 3 Close Tank to Pump Valve CLOSE Tank to Pump Valve before the removing the Intake Cap to prevent tank water from flowing out the intake 4 Connect Intake Hose a Remove the Intake Cap b Connect the Intake Hose 3 12 2 f you are connecting to a pressurized supply charge intake line 1 Open Tank Fill Valve or Discharge Valve OPEN the Tank Fill Valve Air in the intake hose must be expelled before water can reach the pump Air will pass through the pump and out the OPEN Tank Fill Valve OR OPEN Discharge Valve and Discharge Drain Valve Water will flow out the discharge drain valve once the air escapes Close the drain valve once air has escaped 2 Charge the Intake Line OPEN the water valve on the hydrant to allow water to flow through the intake hose and into the pump Before using water from a hydrant open and vent the hydrant for about 30 seconds to flush out gravel or debris Always use intake strainers 3 Close Tank Fill Valve CLOSE the Tank Fill Valve once water tank is full 3 12 3 Resume Discharge Operation 1 Open Discharge Valve Open the Discharge Valve s slowly to resume attack line operations 2 Increase Pressure Continue to watch the Master Pressure Gauge Increase speed until you reach the pump discharge pressure you want 3 13 Two Stage Pump Operation Optional Two stage pumps have two smaller impeller chambers instead of one large chamber W
16. you to operate this pump you already must be educated trained and have passed a test for pump logic and operations You also must know the principles of operation so you can change operation when circumstances change Each valve switch or gauge has an important function If you are uncertain about the function or don t know something inform your fire department s training officer You are always welcome to call Pierce Customer Service at 888 Y PIERCE or 888 974 3723 with questions You are the only person who knows what you don t know You must speak up about the things you don t know so you can learn about them before someone is injured or killed because of your lack of knowledge You are responsible for learning how to operate the pumper under all conditions without having to read this manual at a fire or other emergency 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 1 1 THE OWNER 1 3 Cautions Warnings and Dangers 1 3 1 Safety Warning Labels Throughout this manual you will find Caution Warning and Danger signals Walk around the apparatus Find each Safety Warning Label Read the label Identify and pay attention to the hazard it describes Practice all the time to avoid the hazard so you develop a habit to avoid the hazard A DANGER DANGER signals an imminently hazardous situation that if not avoided will result in death or serious injury WARNING signals a potentially hazardous si
17. Close the Drain Bleeder Valve 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 1 3 21 OPERATION 3 6 2 Charging Line Opening valves rapidly can cause pressure spikes Open and close valves slowly Pressure spikes can cause hoses to kick with great force causing injury Opening valves rapidly can cause water hammer Water hammer can damage the pump and other water system components 1 Slowly Open Discharge Valve Open and close discharge valves slowly Rapidly opening a valve sends a surge of water through the hose making it difficult to control Rapidly closing a valve will cause a pressure spike in other hoses OPEN Discharge Valve one half OPEN until attack line is filled with water and air is expelled from hose Observe personnel on the end of the attack line while the hose is filling 2 Adjust Discharge Valve AFTER air is expelled from the line and water is flowing steadily from the attack nozzle adjust the Discharge Valves to send the flow you want to each line 3 Observe Tank Level Indicator Figure 3 13 Typical Tank Level Indicators Water Level POMO001 0022 Water level in the water tank drops as water flows to the attack lines Watch the Tank Level Indicator Plan ahead to add external water before you empty the tank Learn how to open and close valves using these controls on your pump panel T Handle Controls Pull to Open Valve Push to Close Valve Rotate Countercl
18. Follow the procedures for inspection cleaning and maintenance found in the IFSTA Pumping Apparatus Driver Operator Handbook latest edition Follow instructions regarding inspection cleaning and maintenance located in the Pierce Custom Chassis Operation amp Maintenance Manual Publication No PM C OM012 or the Pierce Commercial Chassis Supplement Publication No PM C OM090 4 2 Draining the Pumping System Drain pumping system in cold weather Water in pipes can freeze Freezing water can damage pipes valves primers and gauges NOTE If itis desired to retain water in the water tank the Tank to Pump and Tank Fill valves should be left in the closed position Every part of the water pump system must be drained if exposed to freezing temperatures 1 Locate the lowest points on every plumbing line and the drain valve that opens it 2 Remove Caps AFTER opening air bleeder valves remove all intake and discharge caps 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 4 1 MAINTENANCE 3 Open Master Pump Drain Figure 4 1 Typical Master Pump Drains POMO029 0030 The master pump drain Figure 4 1 will empty both the discharge and inlet manifolds of water when opened 4 Open Discharge Line Drains Locate each Discharge Line and open the Drain Valves 5 Open Intake Line Drains Locate each Intake Line and open the Drain Valves Open Intake Relief Valve Drain on apparatus equipped with rel
19. Water Flow 1 2 Reduce Engine Speed to IDLE Close Discharge Valves Close all discharge and inlet valves slowly to prevent water hammer 3 15 2 Disengaging the Pump Driveline Driven Pump 1 Reduce engine speed to IDLE Adjust Hand Throttle or Pressure Governor to bring engine to IDLE Shift Transmission to Neutral a Shift the transmission into NEUTRAL If the display on the transmission flashes an N then the transmission has FAILED to shift because engine speed is too high b Make sure that engine is at IDLE speed c Shift Transmission back to DRIVE and then shift back to NEUTRAL d Wait 3 5 seconds after shifting to NEUTRAL for pump drive shaft to stop spinning Look at Tachometer Look at the tachometer in the cab to make sure the engine has remained at IDLE speed If the engine has increased speed the throttle control on the pump panel might not have been properly reset to IDLE Exit the cab and return Hand Throttle and or Pressure Governor to IDLE Observe Speedometer Check that the speedometer has dropped to 0 MPH If speedometer shows any vehicle speed e g 1 10 MPH or more then repeat the entire procedure Apply the Service Brake by depressing and holding the Brake Pedal Shift Pump Control to ROAD Move the pump shift control to the ROAD position Observe Indicator Lights Make sure that the PUMP ENGAGED and OK TO PUMP lights are OFF If either light is ON then repeat the procedure If one o
20. an ets ode Uta e ioa aaa Mista ace abes decidi 4 1 4 2 DRAINING THE PUMPING SYSTEM sssscsssssscsssscsesseecsssesecessesecessesaeaesesaeaeseeaeauseeneacsteneaeateasacsesasaecesassecesassnsnses 4 1 4 3 FLUSHING THE DRAIN VALVES uera eek ea areas 4 2 2 3 T FORWARD F LUSAINS 40 Cont odes pce a a NG att reu nd eas ids oup 4 2 nose did cie MEN 4 3 4 4 ANNUAL TESTING a ae DES Clo ote Rn r n Ces dione a 4 3 4 5 FLUSHING AND DRAINING THE PUMP cernerent nennt nenne titt tht sess inae snas sss ununun inso sso sn states 4 4 4 6 PUMP STORAGE nr man oem mn m Oo 4 4 4 7 PRIMER PUMP LUBRICATION sssscsssssscssssssescssceescsececaeseceesesescessesesessesesaesesesaesesecaesteaeausteaeacsteaeacsteataceeasaeanses 4 5 4 8 MANUAL PUMP SHIET moment anna annee n es 4 5 4 9 INTAKE RELIEF VALVE DRAIN OPTIONAL 4 6 4 10 MASTER GAUGE PORTS ane nn etienne nant aan ar ed en 4 6 2007 Pierce Manufacturing Inc Rights Reserved Pumpers iii TABLE OF CONTENTS iv Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved SECTION 1 THE OWNER 1 1 Who Should Use Service and Maintain This Vehicle This manual explains the operation of a Pierce fire apparatus equipped with a water pump The manual reviews ba
21. ant open and vent the hydrant for about 30 seconds to flush out gravel or debris Always use intake strainers Gravel can damage the pump and reduce pressure 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 23 OPERATION 3 8 1 Connect Intake Hose 1 Close Intake Gate Valve Figure 3 15 Typical Gated Intake Valves Akron OPEN CLOSE POM0034 0035 0036 Close the gate valve on the intake connection to which the intakes hose will be attached A DANGER Always OPEN Drain Valve or Bleed Valve BEFORE removing Intake Cap Intake Lines can trap pressure Intake Cap under pressure will blow off with explosive force Exploding cap will injure or kill Always bleed air from Intake Line Air in lines can cause pressure spikes Air forced from nozzle can increase intensity of fire or cause a pressure surge Air discharge can injure or kill Open Air Bleed Valve for Intake BEFORE Cap is Removed Figure 3 16 Air Bleed Valve POM0023 Intake connections with a shut off or gate valve can trap pressure if the valve is opened and left closed with the cap in place ALWAYS OPEN the Intake Air Bleed Valve to let trapped pressure escape BEFORE removing cap 3 24 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Air Bleed Valves are attached to tube that is connected to the highest point of the pipe Opening the Intake Air Bleed Valve allows ai
22. ater is directed through both chambers in parallel when large flow is desired at moderate pressure Water is directed through each chamber in series when moderate flow at high pressure is desired Read understand and practice the procedures for two stage pump operation found in the pump manufacturer s operation manual 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 29 OPERATION 3 13 1 Select Either Volume or Pressure Mode Figure 3 18 Typical Electric Transfer Valve Controls TRANSFER VALVE 4 ELECTRIC OVERRIDE eb ES SUR EN e Yorume POMO025 0026 Shift the Transfer Valve to the VOLUME setting for high flow at moderate pressure Shift the Transfer Valve to the PRESSURE setting for moderate flow at high pressure 3 13 2 Mode Selection with Pressurized Sources NOTE For departments operating with higher hydrant pressures e Ifthe external intake pressure is high then a pump in PRESSURE mode is able to run with engine RPM slightly above IDLE to provide desired discharge pressure In this condition the engine speed cannot be reduced enough for a pressure governor to react to pressure spikes caused when discharge lines are shut OFF e To avoid such pressure spikes operate the Two Stage Pump in VOLUME mode This causes the engine to operate at a higher speed The pressure governor then has more ability to control pressure spikes Operate a Two Stage Pump in the VOLUME mode when p
23. ch the outlet pipe to see how warm it is If it is hot to the touch it is time to bring fresh cool water into the water tank or turn OFF pump b Watch tank temperature gauge if your fire department selected this option When temperature reaches 175 then add fresh cool water or turn OFF pump 3 12 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 4 Open Recirculating Valve Optional Figure 3 5 Recirculating Valve N RE CIRCULATING LINE POM0019 A dedicated Recirculating Valve Figure 3 5 opens a small water flow from the pump to the tank The flow through this line cools the pump The recirculating line does not let water flow from the tank to the pump so it works only if the Tank to Pump valve is OPEN or if the intake is supplied by a water source Engine Cooler adds engine heat to the pump water Tank water will heat up faster when engine cooler valve is open 5 Open Engine Cooler Valve Figure 3 6 Engine Cooler Valve POM0009 OPEN the Engine Cooler Valve Figure 3 6 to provide more engine cooling when air temperature is above 80 degrees F or if engine overheats Heavy pumping in hot temperatures requires extra engine cooling The Engine Cooler transfers heat to the pump discharge water through a heat exchanger Turn the knob one quarter turn counterclockwise to the left to OPEN the valve To CLOSE the valve again turn the knob one quarter turn clockwise to the ri
24. compartment doors They do not support your weight Falls can cause serious injury or death Always close swing up or swing out compartment doors People can walk into doors left open at lower levels Personnel working on top of the apparatus can mistake an open horizontal door for a walking surface 3 1 3 Hose Bed Covers CLOSE hose covers after use Hose bed covers can cause serious injury if blown shut by wind Keep personnel clear of open hose bed covers during windy conditions Some apparatus are equipped with aluminum hose bed covers Always close after use They protect hose from sun and weather Hose bed covers are heavy They might require two or more people to open or close safely 3 1 4 Folding Steps or Platforms High voltage electricity can travel down a water stream NEVER spray through electric wires High voltage can cause death or serious injury Keep OFF the ground when operating an aerial device ALWAYS stand with both feet on the pump operator s platform of an aerial device High voltage can jump gaps between wires and apparatus Electrical power will pass through people who stand on the ground and touch the apparatus Electrical power lines can cause death or serious injury Before beginning pump operations make sure that folding steps or platforms are DOWN and firmly engaged in their weight bearing position When operating the pump on an aerial apparatus always stand with both feet on the operator s p
25. d 4 Open Primer Valve Pull to OPEN the Primer Valve and engage the primer motor Listen to the sound of the primer motor as it pumps air out of the water pump to draw a vacuum Listen for the tone change as the primer pump begins to expel a mix of air amp water and then begins expelling only water 5 Observe Pressure Gauge Watch the pressure on the Master Pressure Gauge to make sure that the water has entered the pump and the pressure is beginning to build 6 Open Discharge Valve Open the Discharge Valve slowly to begin water flow operation 7 Switch Pressure Governor to PRESSURE CONTROL Mode For pressure governor equipped apparatus switch from THROTTLE RPM CONTROL mode back to PRESSURE CONTROL mode 8 Increase Pressure Continue to watch the Master Pressure Gauge Increase the pressure until you reach the desired discharge pressure 3 34 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved SECTION 4 MAINTENANCE 4 1 Inspection Cleaning and Maintenance 4 1 1 Maintenance Schedule Develop a Standard Operating Procedure for the daily weekly monthly and annual inspection and maintenance of this fire apparatus after careful review of all documentation provided Inspection and maintenance requirements for components such as monitors foam systems flow meters valves etc must be established by referencing the service manuals Follow the pump manufacturer s inspection and maintenance recommendations
26. d hose in the hose chute Lay couplings so they are pulled out straight without flipping around Lay hose so that it never crosses over itself when paying out Maintain vehicle speed of 5 MPH or less At 5 MPH seven feet of hose is pulled out each second If you travel more than 5 MPH you are likely to cause a hose jam in the hose chute 3 2 3 Hose Beds Pack hose carefully in any hose bed to minimize the risk of hose snags or snarls as it lays out Hose that snags or snarls during layout from a moving vehicle can fly about causing serious injury or death to bystanders Hose beds come in many shapes and sizes Hose characteristics vary with the size type and age of the hose 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 3 Experiment with different methods of packing a specific hose bed and chute combination to determine a packing method that will lay out without snagging or snarling Make sure you learn the maximum MPH at which hose can be laid out 3 2 4 Hose Deployment NEVER ride on rear steps or other areas outside the cab Limit speed to 5 MPH when laying hose ALWAYS use a spotter when backing up Keep the spotter and all other people clear of the vehicle s path All occupants MUST be seated and belted while vehicle is in motion Any operation where people are working around a moving vehicle is dangerous All occupants must be seated and belted while the vehicle i
27. e of valves fittings manifolds etc You must determine a pump pressure that will provide the desired nozzle pressure based on the number and size of attack lines that are deployed Determine this pressure for all fire fighting situations you might encounter and record them on a Pump Chart Keep the Pump Chart in a location accessible to the pump operator Refer to the IFSTA Pumping Apparatus Driver Operator Handbook latest edition for procedures on creating a Pump Chart 3 5 2 Engine Speed and Pump Pressure The pump pressure is controlled by regulating the engine speed If the apparatus is equipped with a pressure governor the governor will regulate the engine speed automatically to maintain the desired pump pressure 3 5 3 Controlling Engine Speed Apparatus Not Equipped with a Pressure Governor 1 Observe Interlock Lamp If the interlock light above the Hand Throttle Control on the pump panel is ON it means you can change engine RPMs 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 15 OPERATION Two sets of conditions will turn ON the light Parking Brake applied Transmission in 4th gear lockup Pump shift complete OR Parking Brake applied Transmission is in NEUTRAL If either set of conditions fails the Hand Throttle will be disabled Engine speed control is then controlled ONLY by the foot throttle pedal in the cab That is the manual override For non emergency situa
28. e red button to return engine speed to IDLE b Practice hitting the Emergency Stop button until the movement becomes automatic In an emergency you want to react automatically c If you fail to shift from Road to Pump you can override the parking brake as you increase engine RPMs If you feel the apparatus move IMMEDIATELY push IN the emergency stop It drops engine speed to IDLE The wheel chocks and parking brake will then hold the vehicle in place 4 Increase Engine Speed Using Optional Electronic Throttle a Adjust Engine Speed using toggle switch b Press red button to return to IDLE Red button is also an Emergency Stop Practice using the Emergency Stop 5 Observe Master Discharge Pressure Gauge Figure 3 9 Master Discharge Pressure Gauge Right MASTER INTAKE N MASTER DISCHARGE POM0013 Increase or decrease engine speed to maintain the pump pressure you want Watch the Master Discharge Gauge and adjust the engine speed faster or slower to get the pressure you want 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 17 OPERATION 6 Activate Discharge Relief Valve Figure 3 10 Discharge Relief Valve DISCH RELIEF VALVE MEME 0 Lo CLOSED Waterous POM0003 For apparatus equipped with an ON OFF switch turn the Discharge Relief Valve ON The Discharge Relief Valve prevents pressure spikes It limits the maximum discharge pressure by opening a gate and bypassi
29. erce Customer Service Most service and support issues should be handled by the local Pierce dealer or sales representative However to report any design defects or request support directly from Pierce contact Customer Service Pierce Manufacturing Inc 2600 American Drive P O Box 2017 Appleton WI 54913 888 Y PIERCE or 888 974 3723 www piercemfg com 1 9 Keeping Your Knowledge Refreshed and Up to Date This manual will be revised from time to time Check the Pierce website www piercemfg com to stay current A log exists at the end of this manual so you and other operators can track the dates you review this manual Also review the latest edition of the IFSTA www ifsta org manual Pumping Apparatus Driver Operator Handbook Remember if there s anything you don t understand call Pierce Customer Service at 888 974 3723 1 4 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved SECTION 2 BEFORE PLACING IN SERVICE 2 1 Create a Pump Chart Use a Pump Chart to determine the pump discharge pressure that will provide desired nozzle pressure for various hose lay configurations and combinations The IFSTA Pumping Apparatus Driver Operator Handbook tells how to develop a pump chart Develop the chart for all situations Make sure this chart is always available during pump operation 2 2 Check Adjustment of Intake Relief Valve Figure 2 1 Typical Inlet Relief Valves Relief outlet pipe with threaded end
30. erce Manufacturing Inc All Rights Reserved MAINTENANCE 4 7 Primer Pump Lubrication Use environmentally friendly priming lubricants or use procedures that capture the oil as it is expelled Expelling standard motor oil used as a lubricating fluid in the primer pump does not meet EPA regulations Figure 4 2 Primer Pump Lubrication Fluid or Oil Reservoir D EZ Lr Primo 5 POMO0031 Some primer pumps require a lubricating fluid or oil The fluid reservoir Figure 4 2 is normally located in the pump house behind an access panel or access door For oil type priming pumps the lubricant is expelled with the air as the pump is primed Use only lubricating fluid that is approved by the manufacturer of the pump and approved for use in the environment 4 8 Manual Pump Shift Operate the manual pump shift control weekly to prevent build up of dirt grime and road debris that will inhibit the smooth operation of the cable 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 4 5 MAINTENANCE 4 9 Intake Relief Valve Drain Optional Figure 4 3 Intake Relief Valve Drain RELIEF VALVE DRAIN POM0032 Inlet relief valves can trap water inside the mechanism of the valve Drain trapped water from the valve daily and before operating apparatus in freezing temperatures Frozen water will damage the valve 4 10 Master Gauge Ports Vacuum and Pressure Test Ports are provided
31. ght 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 13 OPERATION Many departments leave this valve fully OPENED during summer and CLOSED during winter CLOSE the Engine Cooler Valve for road operation during cold weather for more cab heat 6 Observe Pump Overheat Indicator Optional Figure 3 7 Pump Overheat Indicator PUMP OVERHEAT WHEN LIGHT IS FLASHING RO WATEROUS POM0004 Watch the Pump Overheat indicator Figure 3 7 during pumping operations to make sure that the pump stays cool If the Overheat indicator light turns ON add fresh water recirculate discharge water or shut engine OFF to cool the pump 3 14 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 3 5 Adjusting the Pump Pressure Hand Throttle Systems can malfunction If engine control is lost at pump panel assign someone to use foot pedal in cab to continue pumping operation 3 5 1 Determine Discharge Pressure Hoses and Nozzles can explode if over pressurized NEVER exceed pressure rating of downstream devices Exploding devices can injure or kill Keep control of hose under pressure Hose under pressure wants to fly about Flying hose can injure or kill Pump pressure is determined by Engine Speed Pump Size Discharge Restriction size and length of discharge hose Intake Restriction size and length of intake hose e System Restriction size and shap
32. ief valves 7 Open Control Valves Open all Intake and Discharge Valves 8 Purge Primer Primer should be purged regularly in cold weather to prevent the primer from freezing 9 Allow Water to Drain 10 Close all Valves NOTE f your apparatus is equipped with a foam system refer to the applicable foam system manual for draining procedures 4 3 Flushing the Drain Valves 4 3 4 Forward Flushing Drain Valves are the lowest point in the pump system Dirt and debris in the water will settle in the drain valve bodies Flush each drain valve with clean water monthly or after pumping dirty or salty water Flush drain valves to prevent sediment from accumulating in the valve body and hurting proper operation of the drain valve 1 Fill Water Tank Begin flushing procedure with a full water tank of clean fresh water 2 Cap All Intake and Discharge Connections Cap all connections to hold the clean water from the tank in the pumping system 3 Open all Intake and Discharge Valves Open all control valves to allow fresh water to reach all points in the pumping system 4 2 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 4 Open Tank to Pump Valve Open the Tank to Pump Valve to flood the pumping system with clean water 5 Open Drain Valves One at a Time Open each Drain Valve Keep open until a steady stream of water flows from the valve for 20 seconds If no water or reduced water flows find
33. intake hose Air will escape out the air bleed valve as it is forced from the hose by the incoming water 2 Close Air Bleed Valve Close the Air Bleed Valve after the air is gone from the intake line 3 8 3 Supply the Pump A DANGER Perform change to external water source properly Water flow can stop if change is performed incorrectly Loss of water flow can endanger fire attack crews resulting in death or injury 1 Open the Intake Gate Valve OPEN the Intake Gate Valve slowly to change the flow to the external supply Always open the Intake Gate Valve slowly Air in the intake line will then enter the pump slowly Air will be sucked through with a steady flow of water If a large slug of air enters the pump the pump can lose prime Centrifugal pumps cannot pump air If prime is lost the attack lines will lose water pressure 2 Close the Tank to Pump Valve Once the Intake Gate Valve is open the water pressure from a pressurized source keeps water from flowing from the tank A check valve in the tank to pump line keeps the pressurized supply from flowing water back into the tank A draft source lacks intake pressure Therefore water can continue to be drawn from the tank If the tank is run dry the pump can lose prime After the Gated Intake Valve is fully open then slowly CLOSE the Tank to Pump Valve to make sure that water is drawn from the external supply only 3 Close the Tank Fill and Recirculating Valves As
34. latform and off the ground Your body will become an electrical path to ground if you stand with one foot on the platform and one on the ground or with both feet on the ground and your hands on the apparatus If the aerial device contacts or comes close to high voltage power lines electricity can shoot through you You can die 3 2 1 2007 Pierce Manufacturing Inc All Rights Reserved 3 2 3 2 1 Hose Storage The hose is stored in Compartments Bumper Compartments e Cross Lay Trays Speed Lay Trays Hose Beds Reels Hose Chutes Evaluate each way of storing hose Determine the most efficient and safest way to pack hose for your fire department s use Hose restraints nets doors webbing ropes etc must be used to secure the hoses after repacking Failure to comply may result in hoses deploying while the vehicle is in motion causing injury to bystanders and or damage to equipment If hose is to be laid from a moving apparatus first test the packing method under controlled conditions to learn the MPH at which hose will lay out smoothly without snags or snarls 3 2 2 Hose Chutes Some aerial apparatus have a hose chute The chute guides the hose from the hose bed around the aerial turntable then out the back of the vehicle NEVER pack hose in the hose chute because that can cause snagging and snarling To avoid creating a jam of tangle
35. long as the discharge lines are flowing water the pump will have fresh water to keep it cool With the Tank to Pump Valve closed and the Tank Fill or Recirculating Valves OPEN the tank will continue to fill until it overflows through the fill hatch a CLOSE the Tank Fill or Recirculating Valves to avoid tank overflow b OPEN both valves again when pump cooling is required because discharge lines are CLOSED 3 26 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 3 9 Pump Priming Problem Solutions 3 9 1 Control Valves That Leak 1 Cap Unused Discharge and Intake Pipes Cap all unused discharge and intake pipes to reduce air leakage from a leaky valve 3 10 Monitoring Intake Pressure The Master Intake Gauge shows the intake manifold pressure 1 Watch Intake Pressure Look often at the intake pressure on Master Intake Gauge while pumping A DANGER Maintain positive intake pressure with soft intake hose Negative intake pressure will collapse soft intake hose Attack lines will lose water pressure if hose collapses Loss of water supply will endanger fire fighters on attack lines NEVER cavitate pump Low intake pressure or high vacuum can cause pump cavitation Cavitation can e Cause loss of water pressure e Damage pump components requiring expensive repairs Avoid water hammer Water hammer can damage the pump system 2 Maintain 20 PSI Intake Pressure Pressuri
36. ltiple Controls 2 2 tee sani anaia 3 20 Controlling Engine Speed Not Pumping Pressure Governor Operation 3 19 Controlling Engine Speed Pumping Pressure Governor Operation 3 18 Controlling Engine Speed Apparatus Not Equipped with a Pressure Governor 3 15 Create a Pump Chart 2 1 Custom Products 1 3 D Daily Checks 1 3 Bui 1 2 Determine Discharge Pressure 3 15 Discharging Foam 3 23 2007 Pierce Manufacturing Inc All Rights Reserved Discharging Water 3 20 Disengaging the Pump Driveline Driven Pump sees 3 32 Disengaging the Pump Pump and Roll 3 33 Disengaging the Pump Stationary Operation 3 33 Draining the Pumping System 4 1 Driveline Driven Pump 1 3 6 E Ending Water Flow Operation 3 32 Engaging PTO Driven Pump when Vehicle is Driving Optional 3 10 Engine Speed and Pump Pressure 3 15 Engine Status Display 3 31 F Fire Scene Positioning 3 5 Flushing and Draining the Pump 4 4 Flushing the Drain Valves 4 2 Folding Steps or Platforms 3 2 Forward Fl
37. ng water back to inlet side of pump If the discharge pressure goes above the relief valve setting water goes from the discharge manifold back into the intake manifold until the water pressure in the discharge manifold drops below the relief pressure 7 Adjust Discharge Relief Pilot Valve The Discharge Relief Pilot Valve controls the pressure relief setting Turn the pilot knob counterclockwise to the left until the amber OPEN indicator light is ON and there is a slight drop in discharge pressure Then turn the pilot knob clockwise to the right slowly to the point where the amber OPEN light is OFF and the green CLOSED light is ON If the amber light is ON the relief valve is open and flow is being bypassed If more pressure is desired the relief valve must be adjusted upward If the current pressure setting is adequate reduce the engine speed until the green light is ON 3 5 4 Controlling Engine Speed Pumping Pressure Governor Operation If the apparatus is equipped with a pressure governor the governor will regulate the engine speed automatically to maintain the desired pump pressure When placed in the PRESSURE CONTROL mode the system will monitor pressure increasing or decreasing the engine speed to maintain the set pressure 3 18 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Apparatus equipped with pressure governors normally do not have pressure relief valves The pressure governor perform
38. o Drive D A driveline driven pump has a Pump in Drive label It says that the transmission must be shifted into DRIVE for pumping 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 7 OPERATION The pump may fail to shift if the gear teeth fail to mesh In this case Shift chassis transmission into Neutral N Shift chassis transmission into Reverse R Shift chassis transmission into Neutral N Shift chassis transmission into Drive D Transmission should shift into pump Repeat steps as necessary 8 Look at Speedometer If the speedometer indicates approximately 12 to 18 MPH and the vehicle is NOT moving then the pump is successfully engaged Look for the speedometer showing some value of road speed in the range of 12 to 18 MPH Begin pumping water immediately after engaging pump Recirculate water if hoses are not ready to keep water cool Running pump dry for more than a few minutes will cause damage 9 Look at Indicator Light The OK TO PUMP light turns ON only when Pump Shift Control has successfully engaged the pump AND Transmission has been successfully shifted into DRIVE AND Transmission torque converter is in the locked mode Make sure OK TO PUMP light is ON and speedometer shows some value of road speed 12 18 MPH When BOTH conditions are met you have successfully shifted from ROAD into PUMP gear You are now ready to pump water 3 4 1b Manual Pump Shift Over
39. ockwise to the left to Lock 3 22 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Lever Controls Pull to open valve Push to close valve Rotate knob clockwise to the right to lock Hand Wheel Controls Rotate counterclockwise to the left to open valve Rotate clockwise to the right to close valve Electronic Controls Follow instructions on controls Be sure to read the manufacturer s Operators Manual 3 7 Discharging Foam See Foam System Operator s Manual 3 8 Changing from Tank to External Pressurized Water Supply with Gated Intake Valve Figure 3 14 Typical Gated Intake Valves 6 MASTER Akron ores OPEN CLOSE POM0034 0035 0036 Soon after the pump is running and water is being supplied to the discharge lines you need to establish an external source of water BEFORE the water tank is empty This supply can come from a hydrant from another apparatus or from a draft source such as a pond river or portable tank A gate intake allows you to maintain water flow at the same pressure at the same time you switch to an external water supply In the absence of a gate intake valve clear fire fighters from the attack area before you change to external water supply because you will lose all water pressure Most fire departments provide their own gate valves Pierce recommends use of a gate valve Before using water from a hydr
40. oth front and rear of tire using wheel chocks every time you part the vehicle 3 6 Pumpers 2007 Pierce Manufacturing Inc Rights Reserved 4 Apply Service Brake by depressing and holding the Brake Pedal 5 Engage the Pump Shift Control Figure 3 1 Pump Shift Control ROAD TO PUMP 1 STOP TRUCK 2 chat Mm TRANSMIS ls PARKING T 4 THROW LEVER 6 5 UCK TRANSMISSION POM0002 Make sure that the air pressure gauges indicate that the air pressure system is at 80 PSI or greater The pump may not shift out of road position if the air pressure is below 80 PSI The pump shift control is located in the cab Figure 3 1 Flip Pump Shift Control DOWN to engage pump Wait up to 4 seconds for pump to engage 6 Lookat Indicator Light Look at the PUMP ENGAGED indicator light This indicator light turns ON when the pump shift control is moved from the ROAD position to the PUMP position It confirms that air pressure has been sent to the pump shift actuator in the pump house and the actuator has moved This means that the pump transmission has shifted If the pump engaged light does not illuminate after the pump shift lever is moved from ROAD to PUMP an incomplete shift has occurred In this event confirm e that the air pressure is above 80 PSI e the parking brake is applied the wheels are chocked 7 Shift the Transmission into Drive D Shift Transmission int
41. out why water fails to drain and make a repair 6 Close Tank to Pump Valve Close the Tank to Pump Valve to prevent any more water from entering the pumping system 7 Open Drain Valves Open each Drain Valve again until remaining water is drained from the system 8 Remove Caps Remove Intake and Discharge Caps 9 Allow Water to Drain 10 Close All Intake and Discharge Valves 11 Replace Caps Replace Intake and Discharge Caps 12 Close Drain Valves 13 Refill Water Tank 4 3 2 Back Flushing The pump should be back flushed with municipal water after salt water or other debris have entered the pump 1 Remove Suction Strainers Remove the suction strainers so they are not blown out of the pump 2 Open Transfer Valve if applicable Hold the transfer valve clapper in the second stage volute entrance open so debris is not trapped behind it 3 Pump Water Pump fresh clean water through all of the inlets and outlets until you see only clear water 4 Open amp Close Valves Open and close all discharge and intake valves to flush them with clean water 5 Activate Primer In the case of salt water pumping activate the primer to get clear water through the primer valve and pump 6 Activate Pressure Relief Valve Activate the pressure relief valve with the pilot valve to flush that system and move the transfer valve from Volume to Pressure a few times if the pump is so equipped 4 4 Annual Testing Test all pumping apparatus ann
42. p Open Primer Valve If the pump is dry engage primer to expel air in the pump to get prime 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 11 OPERATION Keep pump water cool ALWAYS circulate fresh water through the pump Pump can heat trapped water to boiling in seconds Burst lines can spray personnel with scalding water Scalding water can injure or kill 3 Open Tank Fill or Recirculating Valve Figure 3 4 Tank Fill or Recirculating Valve TANK FILL amp i RE CIRCULATING LINE POMOO08 The Tank Fill valve Figure 3 4 opens the connection from the discharge side of the pump to the water tank Open Tank Fill Valve to refill the water tank from a water source that is connected to an intake fitting With the Tank to Pump valve and the Tank Fill valve both OPEN water recirculates from the tank through the pump and back to the tank This cools the pump before you begin flowing water to a discharge line ALWAYS crack open the Tank Fill Valve when running the pump If you fail to continuously circulate water through the pump chamber the water trapped in the pump chamber heats to boiling in seconds Boiling water and steam can injure people It also damages pump seals and gaskets When recirculating water the water in the tank will eventually become too hot to cool the pump Exchange tank water with fresh water to keep pump cooled Keep track of water temperature a Tou
43. path of oncoming vehicles Keep emergency response lighting ON to alert traffic 3 3 3 Lighting As soon as possible provide good lighting for people working on and around the apparatus Use extendable lighting or lighting from another apparatus Make sure that the pump operator can clearly observe controls gauges and hose connections and can watch the condition of hoses and attack personnel to the greatest extent possible 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 5 OPERATION 3 3 4 Chock the Wheels ALWAYS place wheel chocks on both front and rear of tire when vehicle is parked Chock wheels as soon as you exit the cab 3 4 Pump Operation 3 4 1 Driveline Driven Pump NEVER operate pump with Pump Shift Control in ROAD position Vehicle can move Vehicle can override parking brake Moving vehicle can injure or kill 3 4 1a To Engage the Pump 1 Shift Transmission Into Neutral N 2 Pull Parking Brake to Apply to prevent vehicle from rolling If the parking brake is OFF safety interlocks prevent hand throttles or pressure governors from operating NOTE e the parking brake is applied but then released during pump operation the hand throttle or pressure governor will be disconnected and the engine speed will fall to IDLE A loss of water pressure will result Manual Override The pump speed will then be controlled only by the driver s throttle pedal 3 Chock Wheels Block b
44. r both lights are ON you have failed to switch the gears from PUMP to ROAD 3 32 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 3 15 3 Disengaging Pump Stationary Operation 1 Reduce engine speed to IDLE Reduce engine speed to IDLE with the throttle control Observe Tachometer Observe the Tachometer in the cab to confirm that the engine has remained at IDLE speed If the engine has increased speed the throttle control on the pump panel might not have been properly reset to IDLE Exit the cab and return Hand Throttle and or Pressure Governor to IDLE Shift Pump Shift Control to ROAD Move the pump shift control to the ROAD position Observe Indicator Lights Make sure that the PUMP ENGAGED light is OFF If light is ON repeat the procedure 3 15 4 Disengaging the Pump Pump Roll 1 Stop Apparatus Bring apparatus to a full stop and reduce engine speed to idle Shift the Transmission into Neutral N Pull Parking Brake to Apply Disengage the Pump Move the PTO Pump control to the OFF position This disconnects the Hand Throttle Observe Indicator Lights Make sure that the PUMP ENGAGED light is OFF If light is ON repeat the procedure 3 15 5 Securing Pump System 1 Open Drain Valves and Bleed Valves Open all pressure release valves to vent any trapped air pressure and water Open Nozzles Relieve pressure from un gated inlet hose by OPENING discharge nozzles Remo
45. r trapped in the Intake Pipe to escape Rotate the knob one quarter turn counterclockwise to the left to open the valve To make sure that all air pressure is removed from the system keep the Air Bleed Valves OPEN until you start flowing water Only then may you close it 3 Remove Intake Cap Figure 3 17 Intake Cap POM0024 Remove the Intake Cap only after you are certain that trapped air pressure has escaped Make sure to OPEN the Air Bleed Valve or Drain Valve so that trapped air pressure escapes Point intake hose away from personnel Hoses and connections under pressure can burst without warning Burst hose can injure or kill Inspect hoses and fittings regularly Replace if worn or damaged Worn or damaged hoses and fittings can burst Burst hose or fittings can injure or kill 4 Connectthe Intake Hose Connect the Intake Hose that has been laid from the hydrant to the intake connection 5 Adjust the Intake Swivel If the intake connection includes a swivel fitting adjust the swivel so that the hose points AWAY from the pump operator s area 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 3 25 OPERATION 3 8 2 Charge the Intake Line Pressurized Supply NOTE Make sure that the pressure control has been set before charging the intake hose 1 Charge the Intake Line Once the intake hose is properly connected to the intake fitting open the valve at the hydrant to allow water into the
46. ride Optional Pump Shift Control must be in the PUMP position when running pump ONLY operate manual pump shift when BOTH automatic transmission AND Pump Shift Control are in NEUTRAL Engine or transmission damage can occur The manual pump shift control is located on the pump panel This handle also controls the shift lever on the pump If the air shift fails to engage the pump THEN use the manual pump shift instead of the air shift This is a manual override and requires two people to operate 3 8 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Practice using the manual pump shift so you and partner can do it automatically if the air shift fails 1 Oo RN Position One Person in the Driver s Seat and One Person at the Pump Panel Shift the Transmission into Neutral N Pull Parking Brake to Apply Apply Service Brake by Depressing and Holding Brake Pedal Place Pump Shift Control in NEUTRAL Move the Pump Shift Control located in the cab into the middle or NEUTRAL position Engage Manual Shift Handle Figure 3 2 Figure 3 2 Manual Pump Shift Override 8 POMO0011 Waterous Pump Push the Manual Shift T Handle in towards the pump panel with steady pressure using the palm of your hand Hale Pump Pull the Manual Shift Handle with steady pressure Place Pump Shift Control in PUMP Move the Pump Shift Control back into the PUMP position Shift the Transmission into Drive
47. s and discharges Major inconsistencies between your vehicle and the information contained in this manual should be directed to your Pierce Dealer or Sales Representative 1 7 Professional Training and Standards Organizations To keep up to date on knowledge and new standards that affect all facets of fire fighting make sure that you check these organizations catalogues and websites each month National Fire Protection Association for standards and requirements One Batterymarch Park P O Box 9101 Quincy MA 02269 9101 617 770 3000 www nfpa org Make sure you read the latest editions Pierce Manufacturing Inc Customer Service 2600 American Drive P O Box 2017 Appleton 54913 888 Y PIERCE or 888 974 3723 www piercemfg com and www pierceparts com 2007 Pierce Manufacturing Inc Rights Reserved Pumpers 1 3 THE OWNER International Fire Service Training Association for textbooks and other training material Fire Protection Publications Oklahoma State University 930 North Willis Stillwater OK 74079 8045 800 654 4055 www ifsta org 1 8 Safety Defect Reporting If you believe your vehicle or any associated component might have a design defect that could result in failure or injury please report this information immediately to Pierce Manufacturing Additionally should any information in this manual prove to be seriously inconsistent with your Pierce fire apparatus also inform Pi
48. s in motion NEVER ride on rear steps or other areas outside the cab Flying hose is extremely hazardous Keep all people clear of hose being laid by a moving vehicle Flying hose can injure or kill Fire hose under pressure can burst without warning NEVER straddle or stand over a charged hose Always wear complete protective gear even when testing Burst hose can injure or kill When laying hose an anchorman must protect himself from the dangers of flying hose It is safest to use rope to tie the hose to the hydrant In the absence of rope anchor the hose by wrapping the end half way around the hydrant in a J pattern only Never wrap more than half way around the hydrant Wedge the end fitting against the hydrant with a booted foot Stand clear of the hose so that you will be away from the hose if it becomes taut and swings out from the hydrant A snag in the hose bed can pull the hose loose The metal fitting can swing around and break your leg Keep people clear of the hose being laid before driving the vehicle When laying hose limit vehicle speed to 5 MPH to minimize risk to personnel equipment and bystanders Avoid kinks crimps and twists when laying fire hose 3 4 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 3 2 5 Hose Connections Hose fittings can fail without warning Inspect hose fittings for cracks chips or other damage and replace when worn or damaged Damaged or worn
49. s the function of the relief valve Always pump in pressure control mode Pumping in throttle RPM control mode can cause high pressure and or pressure spikes Pressure spikes can injure or kill NOTE For additional information concerning the operation of specific pressure governors refer to the following PV P TM350 Pierce Pressure Governor Operator s Guide on CD ROM and Group 2825 P 001 Pierce Pressure Governor System in Service Manual e Group 2825 V 001 Class 1 Pressure Governor in Service Manual e Group 2825 V 002 Detroit Diesel Electronic Fire Commander in Service Manual 1 Select Pressure Control Mode Place pressure governor in the PRESSURE CONTROL mode Switching methods will vary depending on the manufacturer of the pressure governor 2 Adjust Desired Pressure Use the INCREASE or DECREASE controls to change the desired pressure setting 3 5 5 Controlling Engine Speed Not Pumping Pressure Governor Operation The THROTTLE RPM CONTROL mode allows the operator to increase engine speed when not pumping to increase alternator output warm the engine or other non pumping operations NOTE For additional information concerning the operation of specific pressure governors refer to the following e PV P TM350 Pierce Pressure Governor Operator s Guide on CD ROM and Group 2825 P 001 Pierce Pressure Governor System in Service Manual e Group 2825 V 001 Class 1 Pressure Governor in Service Manual
50. sibility 1 2 Resume Discharge Operation 3 29 S Safety Defect Reporting 1 4 Safety Warning Labels 1 2 Securing Pump System 3 33 Select either Volume or Pressure Mode 3 30 Shutting Off Water Flow 3 32 Stepping and Walking Surfaces 3 1 Stop Flowing Water 3 28 Supply the Pump 3 26 Index 2 Pumpers Supply Water to Pump 3 11 T To Engage the Pump 3 6 To Engage the Pump Stationary Operation 3 9 Two Stage Pump Operation Optional 3 29 W Warnings 1 2 What Do If You Lack Knowledge 1 1 Who Should Use Service and Maintain This Vehicle 1 1 2007 Pierce Manufacturing Inc Rights Reserved
51. sic principles of operation highlights common safety concerns and procedures and gives recommendations for using the pump This manual assumes that you are a pump operator and that You have already been fully trained and certified to operate a pump e You have had formal education from a technical college or other fire fighter training institution e You understand are proficient in and meet all of the requirements set forth in 1002 Standard on Fire Apparatus Driver Operator Professional Qualifications latest edition You already understand water pump operation All Pierce vehicles are delivered with a set of manuals for major components that your fire department selected If you need replacement manuals or safety warning labels contact Pierce customer service at 888 Y PIERCE or 888 974 3723 BEFORE operating the pumping system you the operator must read understand and follow the instructions found in Pump manufacturer s operator and maintenance manuals e Operator and maintenance manuals for pumping components such as valves pressure controllers flow controls manual overrides foam systems and primer pumps FSTA Pumping Apparatus Driver Operator Handbook latest edition 1 2 What To Do If You Lack Knowledge Pump control systems require you to understand the function of each valve each switch each gauge each Emergency Stop and each manual override Before your fire department allows
52. ter tank 2 Watch Intake and Discharge Pressure Watch the discharge pressure gauges to make sure that you maintain attack hose flow at the desired pressure while you also fill the water tank If intake or discharge pressure drops below the desired pressure either CLOSE the Tank Fill Valve to divert less water to the tank OR increase engine speed to maintain pressure Always keep the water tank full so that a steady discharge flow can be maintained if the intake supply must be shifted 3 12 Changing from Tank to External Water Supply without Gated Intake Valve If you change from the water tank to an external water source without an Intake Gate Valve the water flow to the discharge attack lines must be stopped Pierce recommends that every pumper apparatus have an Intake Gate Valve Use these procedures if Gate Valve is absent Make sure fire fighters are withdrawn from attack area because hoses will lose water 3 12 1 Stop Flowing Water 1 Close Discharge Valves Water pressure during the transition period can fluctuate Protect attack line personnel from the hazards of pressure spikes by closing the Discharge Valves Remember you are also shutting off water to the attack hoses 3 28 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 2 Reduce Engine Speed to IDLE Running the pump without water will damage the seals and bearings Reduce engine speed to IDLE to minimize wear on the pump while
53. tions return the engine speed to idle by turning the hand throttle knob Continual use of the red button will wear out the threads on the screw and cause premature failure of the hand throttle 2 Increase Engine Speed Using Hand Throttle Figure 3 8 Hand Throttle DO NOT OPEN THROTTLE UNLESS ONT 15 RELIEF VALVE DRAIN MUST BE CLOSED BEFORE OPENING THROTTLE 0014 Turn counterclockwise to the left to INCREASE engine speed Turn clockwise to the right to DECREASE engine speed Adjust friction collar to set resistance to main constant engine speed ao Press red button to return engine speed to IDLE 3 16 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Emergency Stop button drops engine to IDLE only Engine at IDLE creates water pressure emergency requires that water stop flowing close the discharge valves e ifan emergency requires that the engine stop turn OFF the ignition switch in the cab Press red shutdown button on the hand throttle after use to make sure it is set to lowest possible idle speed Hand throttle left at a higher speed will return to that speed when hand throttle control is resumed Practice hitting the Emergency Stop switch The Emergency Stop switch will drop the engine RPM to IDLE Practice this action until it is second nature so you can bring engine to IDLE in an emergency 3 Emergency Shut Off a Push IN th
54. tuation that if not avoided could result in death or serious injury CAUTION with the safety triangle signals a potentially hazardous situation that if not avoided might result in minor or moderate injury CAUTION used without the safety triangle symbol signals a potentially hazardous situation that if not avoided might result in property damage 1 4 Responsibility Study carefully this manual and the manuals for major components such as pump engine and other allied equipment Make sure that all operators and other users also completely understand their contents The warnings cautions and procedures listed in these manuals must be part of the fire department s safety program As the operator of this vehicle and pumping equipment you are responsible for Understanding the function of each component of the pumping system Understanding how to adjust each control to obtain the results you want Maintaining control of the pumping system at all times e Remaining proficient in use so at a fire you can operate and make successful changes in the operation quickly without having to read the operator s instructions or safety warning labels Practicing proper manual override and emergency shutdown procedures so you can respond immediately in an emergency or during the failure of a component Remember stress is high Your failure to practice increases the odds you will forget or do it wrong in the heat of the moment
55. ually per the specifications in NFPA 1911 Standard for Service Tests of Fire Pump Systems on Fire Apparatus latest edition These tests are necessary to make sure that the apparatus will continue to perform to specification These tests help prevent breakdowns 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 4 3 MAINTENANCE 4 5 Flushing and Draining the Pump A DANGER Pump packing gland and pump body heats to high temperatures during operation Touching hot areas of pump will burn Allow pump to cool before servicing Flush the pumping system after pumping dirty contaminated or salty water 1 Supply Clean Fresh Water Supply clean fresh water to the pumping system 2 Open Discharge Valves Open all discharge valves so that clean fresh water flows through each discharge line and valve for one minute 3 Fill Tank Fill the water tank with clean fresh water 4 Flush Drain Valves Flush all drain valves using the procedure listed under Flushing the Drain Valves 4 6 Pump Storage Store pump completely full of clean water or completely dry Do not leave pump partially full of water Always store pump dry in freezing weather In warm temperatures store pump either entirely full of water or completely empty Pumps stored partially full of water will rust at the air to water interface In freezing temperatures store pumps dry without any water in the pump chamber 4 4 Pumpers 2007 Pi
56. ump is supplied by a pressurized external water source AND a pressure governor is used 3 13 3 Priming a Two Stage Pump Changing between stages on a two stage pump can cause a pressure spike in discharge hoses Give all fire suppression crews warning BEFORE changing stages Shift the Transfer Valve to the VOLUME setting when priming a two stage pump 3 30 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved 3 14 Engine Status Display Figure 3 19 Typical Engine Status Displays POMO0027 0028 The Engine Status Display is either a group of gauges and indicator lights or an electronic display that gives you critical information on engine performance You must watch this information often during pump operation and react to any abnormal readings Engine information includes Engine Speed shows current engine speed in RPMs Engine Oil Pressure Gauge shows engine oil pressure Engine Temperature Gauge shows oil temperature of the engine Electrical System Voltage Meter measures the voltage level of the vehicle s battery system e Stop Engine Light A DANGER Replace apparatus when STOP ENGINE light is ON Engine can fail at any time without further warning Engine failure will stop water flow to attack lines putting fire fighting personnel in danger If the Stop Engine light turns ON the engine s ECU electronic control unit has detected a critical error condition
57. ushing 4 2 H POSE EU 3 3 Hose Bed Covers 3 2 Hose Beds 2 esee ee tibcE DUE 3 3 Hose Chutes cle iian 3 3 Hose Connections 3 5 Hose Deployment 3 4 Hose Storage eerte irre end dee 3 3 l Inspection Cleaning and Maintenance 4 1 Intake Relief Valve Drain Optional 4 6 K Keeping Your Knowledge Refreshed and Up to Date 1 4 Pumpers Index 1 INDEX L Lighting 3 2 ed ee iua an 3 5 M Maintenance Schedule 4 1 Manual Pump Shift 4 5 Manual Pump Shift Override Optional 3 8 Master Gauge Ports 4 6 Mode Selection with Pressurized Sources 3 30 Monitoring Intake Pressure 3 27 Operating from a Static Water Supply 3 34 Positioning on Roads 3 5 Positioning the Apparatus 3 5 Primer Pump Lubrication 4 5 Priming a Two Stage Pump 3 30 Professional Training and Standards Organizations 1 3 PTO Driven Pump 1 3 9 Pump Operation 1 3 6 Pump Priming Problem Solutions 3 27 Pump Storage 4 4 R Refilling the Tank 3 28 Respon
58. utside the cab when the vehicle is moving Keep personnel walking to the side of the vehicle and in sight of driver at all times Drive slowly Stop Vehicle Shift Transmission into Neutral N Pull Parking Brake to Apply Begin pumping water immediately after engaging pump Recirculate water if hoses are not ready to keep water cool Running pump dry for more than a few minutes will cause damage 4 Engage the Pump Activate the PTO Pump Shift control located on the driver s panel in the cab 5 Observe Indicator Light The PUMP ENGAGED indicator lights only when PTO has been engaged and the pump is spinning 3 10 Pumpers 2007 Pierce Manufacturing Inc All Rights Reserved Provide Water Supply to Pump Open the Tank to Pump valve to provide water to the pump Shift Transmission into Drive D For pump and roll operation the transmission must be in the Drive D position Release Parking Brake Look at Indicator Light The OK TO PUMP light turns ON when PTO Pump is engaged AND Transmission has been successfully shifted into DRIVE AND Parking Brake is released 3 4 3 Supply Water to Pump Open Tank to Pump Valve Figure 3 3 Typical Tank to Pump Valves TANK TO PUMP POM0007 0006 The Tank to Pump valve Figure 3 3 controls the flow between the water tank and pump inlet With this valve OPEN water from the tank floods the pump intake manifold and slowly primes the pum
59. ve Hose Remove all hoses from discharge and intake lines Replace Caps Install Caps on Intake and Discharge connections to protect them from contamination Flush Pump Flush the pumping system with clean fresh water if required Purge Primer If equipped with a fluid lubricated primer pump operate the primer pump until primer fluid comes out of the primer pump discharge Check primer fluid tank level and fill if needed 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 33 OPERATION 3 16 Operating from a Static Draft Water Supply Operating the pump from a draft source is the most demanding type of pump operation Learn about the complexities and hazards of this operation by studying the IFTSA Pumping Apparatus Driver Operator Handbook and through formal training Once the apparatus is prepared for draft operation and the appropriate suction lines are deployed prime the pump as follows 1 Close Valves First close all discharge valves drain valves bleed valves and tank valves or the primer will fail to work 2 Switch Pressure Governor to THROTTLE RPM CONTROL Mode If the apparatus is equipped with a pressure governor place it in THROTTLE RPM CONTROL mode For governor equipped apparatus this will hold the prime better than starting out in PRESSURE mode 3 Increase Engine Speed Increase the engine speed to 1000 RPM This should provide about 50 PSI of water pressure once the prime is establishe
60. zed Supply Maintain intake pressure at or above 20 PSI when operating from a pressurized external supply This provides a safety factor to avoid drawing a vacuum on the intake hose Changes in supply pressure can cause intake pressure to drop without warning Drop in pressure below zero 0 PSI can cause water hammer pump cavitation or collapse the intake hose AND cause loss of water flow 2007 Pierce Manufacturing Inc All Rights Reserved Pumpers 3 27 OPERATION NOTE 20 PSI may not be attainable in certain areas depending on the hydrant system For additional information consult your Fire Department standard operating procedures 3 Maintain 20 in Hg Vacuum Draft Supply When operating from draft always maintain 20 in Hg of vacuum or less Intake vacuum of more than 20 in Hg can cause pump to cavitate 4 Avoid Pump Cavitation Pump Cavitation is happening when Discharge pressure changes up and down You hear a sound like gravel churning in the pump Discharge pressure remains the same when you change engine speed Reduce discharge flow until cavitation ceases 3 11 Refilling the Tank ALWAYS refill water tank as soon as possible If the supply source is interrupted a full tank of water allows you to continue flowing water to the attack lines while an external water source is being restored 1 Open Tank Fill Valve OPEN the Tank Fill Valve slowly to 74 OPEN to divert some supply water into the wa
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