Operations / Maintenance Manual
Contents
1. Manual For Snuffer 45 90 N amp 45 130 N Compressed Air Foam Systems SAFETY RENTALS LTD Snuffer Operator amp Maintenance Manual CONTENTS Section Page Safety 6 Information Snuffer 8 Applications eral Information amp Requirements Snuffer 4000 Series 10 Hoses 11 Nozzles amp Valves 12 Foam 13 Foam Types 14 Installation 15 66666 Operating Instructions Before Starting 16 Start Engine amp Operating Unit 17 CAFS Combining Valve 17 Snuffer unit shut down 19 Drain unit 20 66666 Drives amp Drive Belts 22 Belt Adjustment Water Pump amp Plumbing 23 Operation Self cleaning Filter Maintenance Hydraulic Injector Operation Operation 24 Maintenance 25 Air System Including Air Compressor 27 Operation Maintenance Engine see engine manual included 28 Electrical System 28 Specification Guide 29 Trouble Shooting Guide 34 Safety Information for Snuffer C A F S Be sure to read and understand this manual and the Engine manual if so equipped before operating the Snuffer to ensure safe operation The Snuffer compressed air foam system is a highly versatile fire protection and suppression device and is the system of the twenty first century NOTE This owner s manual should be read before any use or maintenance of the Snuffer is carried out This manual should be reviewed periodically to keep familiar with all functions In addition to this frequent trainin2. ABD B Connect the clear plastic line with foot valve to the bottom of the injector stem To reduce the chemical from splashing drill a hole through the cap of the pail the same size as the clear plastic line Disconnect the line from the foot valve and place the clear line through the cap and re connect the foot valve Bottom of Injector Drill out Cap C Make sure all connections are tight and 7 EE RE il 0 4 Class A depending on the quality of foam Mb oam rate if So equipped should be set at 0 5 1 This is done by first loosening the collar where the injector stem meets the injector body 1 2 1 turn Once this is done the injector stem can be turned up or down to adjust the rate It may be necessary to hold the clear plastic calibration indicators with the other hand When the desired rate has been selected lightly hand tighten the collar In most cases if the collar is set correctly it is not necessary to loosen the collar D Slowly open the desired CAFS line engine should be set at throttle or better WARNING Always have someone holding the pistol grip nozzle valve on the end of the line when operating hand lines for any reason E Turn the switch located at the top of each injector to the Bypass B center position for a second and then turn the switch to the ON position The operator should after a few seconds be able to see the chemical flowing through the clear suction tube If the Inject
3. Weight est 450 lbs 205 kg 04 08 03 Model 45 90 Page 2 Of 2 The Snuffer Corporation Foam concentrate Le r duct Spec ific ation Fuel supply odel 45 90 j Heated enclosure for cold weather qperation minm Optional Features Rail mount skid system with 250 to 350 US gallon Fibreglass Plastic and Aluminium tanks available Roll out capacity for easy servicing Plumbing assembly for Drafting and or Tank operation Hydrant Fill Stainless Steel Plumbing with Stainless Steel valves Stainless Steel Plumbing with Akron valves Foam Injector 1 0 5 0 application rate Specification Guide Hydraulic Injector s water driven Water driven Operating Flow Range 2 2 to 50 gpm Operating Pressure 5 to 120 psi Adjustment Ratio 0 2 to 2 0 adjustable while operating Filter Plumbing Size 1 50 38mm Diameter Mount Bayonet type Chemical Suction Intake Tube 0 50 13mm Diameter Purge Hose 0 25 6 5mm Diameter Foot Valve Comes with Removable Strainer Switch Control Off Purge and On Positions 45 90 N Kohler 25 hp Gasoline Engine The Kohler 25 hp 3600 rpm is a 4 cycle 2 cylinder air cooled gasoline engine 45 130 N Kohler 27 hp Gasoline Engine The Kohler 27 hp 3600 rpm is a 4 cycle 2 cylinder air cooled gasoline engine 45 90 N Monarch 90 gpm Water pump The single stage centrifugal pump used on all models produces 90 gpm 100 psi 45 130 N ACE 125 gpm Water pump The single stage centrifugal pump used on
4. 1 50 38mm Line e 150 ft 45m of single or double jacket fire hose is recommended non weeping e Standard hose 1 50 38mm or 1 75 45mm Interior Attack hose 1 50 38mm Neidner non crimping 50 ft 15m minimum This hose is recommended for interior attacks as it does not kink passing through doors up stairs Nozzles amp Valves Important The serial number of your unit is on the back of the front panel Please record this number along with the units model number in the space below Please refer to your model number when you call your distributor or The SNUFFER Corporation for information parts and service ModelNumber Number Serial Number Number Purchase Date Date This decal is located on the back of the Control Panel it Une Beria diant to understand when and how these settings should be used When Compressed Air Foam is being applied the fire fighter can open and close the valve quickly without fear of causing water hammer Recommended Nozzle or tip sizes for 1 50 38mm C A F lines are e 0 75 19mm Straight Bore Nozzle e 0 88 22mm Straight Bore Nozzle 1 06 27mm Straight Bore Nozzle e Akron Saberjet or equivalent fog straight stream nozzle valve This nozzle cannot produce dry foam Aspirated Foam Tips amp Nozzles The Aspirated Foam System comes standard with a 2 20 adjustable nozzle for best performance It can also be used with a combination fog and str
5. Handle used in initial belt tensioning The Air Compressor is driven by an automotive style serpentine belt Tightening the air Compressor as achieved by turning the circle tightener on the engine To tighten the Air Compressor drive belt proceed as follows Loosen the three 7 16 bolts lift the handle of the circle tigthener until the belt cannot be twisted more than 90 by fingers Then retighten the three 7 16 bolts Water Pump The 45 90 N systems use a cog type belt to drive the water pump while the 45 130 N systems use a eagle drive cog belt to drive the water pump To tighten the Water Pump drive belt proceed as follows Loosen the Idler Pulley pry down on the pulley and retighten the bolt The belt should be tightened to a point where there is about 3 8 slack in the under side of the belt When this is accomplished secure the bolt on the water pump tightener pulley It is necessary to recheck the belt tension after 10 to 20 minutes of operation Water Pump amp Plumbing Operation The Snuffer 45 90 N and 45 130 N systems uses a centrifugal single impeller water pump A check valve is located above the pump and is a requirement for the operation of the air primer Self Cleaning Filter Maintenance Water from the pump flows through a self cleaning filter This filter should be checked often in the first few hours of operation and periodically to see if the filter is being flushed effectively or not If
6. foam 25 gallons 95 L of water e Protection mop up on structural fires after a fire has been knocked down 2 Extra Dry Foam 12 15 times expansion e Produces 250 375 gpm 1140 1420 L min of Extra Dry foam 25 gallons 95 L of water e Used to put an extra layer of foam inside a car or inside house walls and for long term exposure protection Wet Foam 40 to 50 gpm 160 L min 3 Wet Foam 3 4 times expansion e Produces 150 200 gpm 570 750 L min of Wet foam 50 gallons 160 L of water e Often used for grass fire control Occasionally on external structure fires where extra casting distance is required not as effective as medium foam 4 Medium Foam 8 9 times expansion e Produces 400 450 gpm 1515 1700 L min of Medium foam 50 gallon 160 L of water e Used on more than 90 of fires that departments come in contact with structural industrial rubber automobile petroleum and synthetic materials It also does a good job of providing protection Extra Wet Foam 80 100 gpm 300 380 L min 5 Extra Wet Foam 1 2 times expansion e Produces 90 180 gpm 340 680 L min of Extra Wet foam 90 gallons 340 L of water e Used on grass fires and often used on materials garbage dumps deep seated fires in fibrous the foam or container fires Installation When the Snuffer is combined with a water tank on a truck with enclosure the following is recommended ily The system should be installed onto a Rollout skid frame fo
7. not better Use only enough foam chemical to do the job NOTE The CAFS discharge nozzle should be a 1 1 16 straight smooth bore nozzle not tapered F Repeat this operation for the second C A F S line NOTE During operation the engine should be run at 2500 to 2600 rpm This should generate a static pump pressure of 125 to 130 psi WARNING Do not open a discharge valve unless a hose is attached to the related discharge port Injury may occur if hose is not coupled to the discharge port C A F outlets must never be capped Air Regulator When air tools are used the air regulator can be used to set their maximum operating pressure make sure the airline fitting matches the air chuck or connector NOTE You can operate one of the CAFS foam outlets and also the aspirated foam outlet when using the external air chuck Snuffer Unit Shut Down Warm Weather 1 Reduce engine RPMS by 1 3 and operate for 1 2 minutes 2 Shut off Engine A Leave the system fully charged with the injector switch in the ON position CAUTION If any adjustments or maintenance is to be performed on the Snuffer unit the procedures must not be performed until all of the system pressure has been relieved This is achieved by opening the discharge valves very slowly Once the maintenance or repairs have been done the system must always be tested to make sure that it is making foam before returning the unit into service In very cold weather conditions
8. report that they often obtain better knock down of most petroleum fires by lobbing on the foam Hoses Standard 1 50 38 mm hose should be used on each Compressed Air Foam outlet except for inside structural attack For inside structural attack it is highly recommended that at least 50 ft 15 m of crimp resistant hose be connected to the pistol grip valve A regular single or double jacketed hose filled with compressed air foam can be crimped because of the low operating pressures resulting in loss of flow Weeping forestry hoses are not recommended as this allows the air to escape which reduces the effectiveness of the foam and discharge distance To make good Compressed Air Foam it is recommended that 150 ft 45m of 1 50 38mm hose or 200 ft 60m of 1 75 45mm hose be used The hose should have a rough bore to maximize mixing of the air and foam solution This will result in the most uniform bubble structure giving the highest quality and most effective foam Smooth wall hose will work but it takes greater lengths to accomplish the same scrubbing action within the air and foam solution Operators often use compressed air for 10 15 seconds to flush out hand lines after they have run water through these lines This is very beneficial for cold weather clean up operations EAnore 1 00 25mm hand lines are not recommended for structural fires but they can be used for wild land mop up operations Recommended Hoses
9. side hill operation and water cooled for long life A multi groove serpentine belt drives the compressor to an electric clutch operated pulley on the compressor When the pressure in the air system is low the hi low pressure switch cuts in engaging the electric clutch When the pressure builds up to approximately 5 10 psi above maximum operating pressure the hi low pressure switch cuts out hand line nozzle shut off When the nozzle valve is open the pressure drops in the system and general CAFS foam delivery pressures are some 40 80 psi depending on length of hose lay and tip size NOTE Higher CAFS foam pressures deteriorate foam quality somewhat 1 Air compressor oil level should be checked frequently Only the manufacturer s specific synthetic oil should be used no substitutions are recommended 2 Check belt tensions The traction belt on the compressor is held under tension by a fixed mechanical tightener 3 Check all airlines for deterioration 4 The amount of moisture in the air will determine how often the air tanks drain valve should be opened and the moisture drained out If moisture is found in the air tanks then the drain valve in the compressor head should also be opened and the water drained out Excessive water and any foam in the air tank indicates a faulty air check valve this should be replaced Drain the water from the air tank after each use or at regular intervals as determined by the operator by opening the drain cock v
10. NOTES Any time the Injector is completely disassembled upon reassemble the Notch A in the upper portion of the diffuser is placed over the peg in the bottom housing of the injector This way the chemical flow injection port is on the outlet side of the Injector Screw the jam nut B onto the diffuser until the nut jams against the housing screw in the retaining screw C i hole in the jam screw Insert the stem into the diffuser ar turn the lock nut D onto the jam nut and tighten To adjust simply loosen the lock nut slightly and turn the adjustment r stem move up or down then retighten lock nut If for any reason the entire injector is removed from the Snuffer make sure the injector is reinstalled with the arrow on the underside of the injector body pointing in the direction of water flow Hydraulic Injector Foot Valve amp Screen Periodically remove the hose and foot valve from the bottom of the hydraulic injector stem wash in soap and water Remove the stainless steel screen by pulling it off of the foot valve assembly clean the screen with a suitable brush and reassemble Check the hose clamps for tightness and the hose for any nicks or cuts or severe crimps in the line Check the 90 degree elbow to make sure it s tightly screwed into the quick connector IN ja mi Oo N Da A O N Hoh wal E Air System Including Air Compressor Operation The compressors are pressure lubricated for
11. all models produces 125 gom 100 psi American Eagle 42 CFM Air Compressor The Air Compressor is a single stage liquid cooled 4 cylinder pressure lubricated unit with a delivery rate of approximately 42 cfm at foam delivery pressures 132 cu in displacement Maximum working pressure 155 psi Single stage Trouble Shooting Guide 1 WATER PUMP A Problem Failure to pump Probable Cause Corrective Action Pump not properly primed Check that pump and suction hose are full of water Ensure that suction line fitting are tight and not leaking See priming instructions Speed to low Check RPM of engine Excessive suction lift Locate the Snuffer system closer to water source B Problem Reduced capacity and or head pressure gauge fluctuates Probable Cause Corrective Action Air leak in suction hose Check suction hose fitting and suction strainer Make sure that suction hose does not arc above the level of the pump Clogged impeller suction hose or strainer foot valve Remove and clean Insufficient submergence of suction Strainer Add lengths of suction hose to keep strainer submerged Excessively worn impeller Replace impeller Worn or damaged pump seal Replace seal Agee PUR peme oses p Check suction hose fitting and suction strainer Make sure that suction hose does not arc above the level of the pump ERB shai ab Ariane heaSigiter SYRIGHREL AMRIL RAY CReplace if needed Check WarteropMiselian creps conite puieibing
12. alve located at the bottom of the air tank Make sure to close the valve as soon as the water stops running as it can be easily over looked when responding to a fire call DO NOT OVER TIGHTEN NOTE Air pressure in the system must be fully discharged Engine Engine maintenance Refer to engine manufacturer s service manual for operation and maintenance Electrical System This is a 12 volt system The diesel engine has a 32 amp output The systems may be connected to the truck battery or to a separate battery IF connecting to the truck battery confirm that the systems are compatible AR COMPRESSOR PRESSURE SWITCH YELLOW i WE Or AE GH y a Ww Oo z 6 u wz ok EF ER gt i o 46 7 D Ax Bo LE D VE lt i ENGINE GREEN 4 LIGHT OFTIONAL ON 2540 amp 2340 Model 45 90 Page 1 0f2 04 08 03 The Snuffer Corporation Product Specification Model Compr gi Foam System Performance Pump output 120 psi Rated capacity 90 gom 100 psi Maximum pressure CAFS output 1 1 77 38 mm outlet Rated capacity 360 gom foam delivery pressure Water output 1 1 72 38 mm outlet Rated capacity 90 gom 100 psi not operating CAFS line 45 gpm 100 psi while operating CAFS line General Specifications Standard Frame construction Finish Plumbing Air Welded steel Powder Coated Stainless steel front panel 1 72 38 mm Sched 40 black iron system pipe Air outlet wit
13. amp Gheck water SUPP nr Danlana dead D Problem Mechanical trouble and noises Probable Cause Corrective Action Air leak in suction hose Check suction hose fitting and suction strainer Make sure that suction hose does not arc above the level of the pump Clogged impeller suction hose or strainer foot valve Remove and clean Insufficient submergence of suction Strainer Add lengths of suction hose to keep strainer submerged Excessively worn impeller Replace impeller Worn or damaged pump seal Replace seal C Problem Pump loses prime Probable Cause Bent shaft and or damaged bearing on RS S Inspect shaft and bearing Replace if needed Check pump Misalignment concentricity alignment of shaft for parallelism Replace if needed Seal leaking due to corrosion of sealing Faces Impeller out of balance Ph ee Da vote de A raises esl Rep drame RE Trouble Shooting Guide 2 ENGINE A Problem Engine turns Cause Corrective Action Air leak in suction hose over but does not start Probable Check suction hose fitting and suction strair that suction hose does not arc above the le pump Clogged impeller suction hose or strainer foot valve Remove and clean Insufficient submergence of suction Strainer Excessively worn impeller Add lengths of suction hose to keep strainer Replace impeller Worn or damaged pump seal Replace seal C Problem Pump loses prime Probable Cause Bent shaft and
14. d into the respective pails or tanks F Make sure that all drain cocks and drains are closed D Connect foam and water hand lines A 1 50 38mm hose is recommended and should be attached to each outlet being used Starting the Snuffer Unit A Start the engine making sure that the air compressor switch is in the OFF position Move the choke lever to full open then turn the key to the start position throttle at approximately one third open When the engine starts check to make sure water pressure is showing on the water gauge B If water pressure is not showing When a unit is equipped with a draft line and occasionally from an onboard water tank operate the air primer by opening the air primer valve until water is visible at the air primer outlet When water pressure just starts to show on the gauges shut off the primer valve Water pressure should stay showing on the water gauge with discharge valve s closed static If after 20 30 seconds the water pressure continues to drop shut the unit down and check suction hose connections for leaks etc Then go through the priming sequence Important The serial number of your unit is on the back of the front panel Please record this number along with the unit s model number in the space below Please refer to your model number when you call your distributor or The SNUFFER Corporation for information parts and service WitMib eiNuitabemning And water pr xsxiat Nombre incr
15. e Each time the large piston moves upwards a smaller piston connected to the main piston assembly draws the foam concentrate from a pail or tank and forces it into the center of the water stream This is now called a foam solution In the Compressed Air Foam line with the air compressor switch ON compressed air is injected into the foam solution with secondary agitation accomplished by a stationary mixer In the Aspirated foam line the foam solution runs as is through the line to the hand line nozzle where air is then introduce into the foam solution by an aspirating nozzle Operating Suggestions The fire fighter quickly learns the best way to use CAFS foam types to their best advantages Initial structural fire suppression fibrous materials Wet foam WET DRY valve open with a 0 88 22mm or a 1 06 27mm tip on Inside structures petroleum fires rubber and car fires Medium foam WET DRY valve open with tip off Grass and fibrous material fires Wet foam WET DRY valve open with a 0 75 20mm tip on Protection and final mop up of automobile petroleum oil and gasoline fires Extra Dry foam WET DRY valve in DRY position with tip off Certain units are equipped with an extra wet foam attachment for grass fire control thus generally smaller diameter tips such as 0 50 13mm or 0 75 20mm should be used 2 NOTE 1 00 25mm hand lines are not recommended for use on structural fires NOTE Fire fighters
16. eam nozzle However this nozzle in most fire situations is not as effective at making useful foam The nozzle valve must always be opened or closed slowly to reduce water hammer FOAM Making good quality foam is not hard to do but it does require some study training and practice It is necessary for fire fighters to learn how to read foam type and how it is applied to various surfaces and fires Class A Foam Use a good quality foam chemical that is tolerant to the cold if used with water at temperatures below 12 C 55 F With water at temperatures above 12 C 55 F the chemical should make good wet foam when the chemical injector is set at 0 2 and good dry foam at 0 3 injection rate In cold temperatures you may have to increase the foam percentage by 1 10 of a percent to achieve the same quality foam Very dry foam that makes snow flakes is not desirable as it does not contain enough water to give adequate protection When using different brands of foam become familiar with their properties when used in the Snuffer and before using it at an actual fire It s important to remember that higher chemical rates are not better In most cases a higher rate produces thicker foam which will not run into fibrous material crevices and the foam becomes less effective Class B Foam AFFF Use a good 1 0 AFFF set at 0 6 injection rate for non rescue and 1 0 injection rate for rescue situations Application of AFFF compre
17. ease th een uechas Date c pressure shoulda DE betwee 30 40 DST C A F S Combining Valve The 45 90 and 45 130 systems can be equipped with a optional C A F combining valve This valve allows the operator to combine the two foam line C A F and Aspirated foams into one line Keep in mind that in the Aspirated line there is only a foam solution so what is being added to the C A F line is more foam solution and water thus increasing the casting distance of the foam Hydraulic Foam Injectors The foam injector works in the following manner When a hand line valve is opened water flows into the hydraulic injector which acts on a large and small piston located within the injector bell housing A set of reversing valves is used to allow the pistons to move up and down Every time the large pistons move upwards the small piston pulls chemical from the pail or tank The foam chemical is then injected into the center of the water stream for better mixing This unit operates on water flows of 2 50 gpms and pressures of 10 120 psi and is capable of lifting foam from a pail or tank located up to 7 9 ft below the injector Foam tanks or pails should not be located much above the level of the injector as a siphon action may occur if plain water is used through the injector The next procedure is to charge the hydraulic foam injection system using the following steps A Connect a container of good foam concentrate Normally 1 0 A or B and 0 4 for
18. et Decal Locations on the Snuffer Important The serial number of your unit is on the back of the front panel Please record this number along with the units model number in the space below Please refer to your model number when you call your distributor or The SNUFFER Corporation for information parts and service Model Number Serial Number Purchase Date arts Warning Rotating F This decal is located on the inside of the access door of the Snuffer This decal is designed to warn of the hazard of the Drive Belts for both the Air Compressor and the Water Pump Hands loose clothing or anything else may become entangled in the Belt while the Snuffer is in operation and can cause severe injury or death Snuffer 45 90 N amp 45 130 N Compressed Air Foam System Principals of Operation When the engine is started water from the pump flows through a check valve and then is divided into a plain water circuit and one foam circuits The water in the foam circuit flows through a self cleaning filter and into a Compressed Air Foam line and into an Aspirated Foam line optional The water is then restricted per line by use of line restrictors that limit the flow through each injector to 40 to 45 gpm average 45 gpm Water then flows through the water driven hydraulic foam injector s The water flow in the injector pushes a large piston assembly up and down achieved by two sets of reversing valves opening and closing in sequenc
19. following guidelines DANGER An immediate and specific hazard that will result in severe personal injury or death if the proper precautions are not taken WARNING A specific hazard or unsafe practice which could result in severe personal injury or death if proper precautions are not taken CAUTION Unsafe practices which could result in personal injury if the proper precautions are not taken or as a reminder of good safety practices Snuffer C A F Applications Compressed Air Foam Low expansion high energy foam The Snuffer with the Chemical Injector and Air Compressor ON makes low expansion highenergy high density foam known as C A F The operator can make several different low expansion foams by changing the Flow Control from the Wet to Dry position and by operating with the smooth bore tip on or off This will produce foam from a slurry for fighting fires to dry foam for fire prevention Used in this manner the Snuffer can be utilized for most fire fighting and fire prevention applications except in restricted areas where only water is allowed to fight fires The results are that the fire is suppressed faster there is a significant reduction in the quantity of water required there is less water damage and less pollution Foam injection rates are low 0 2 to 0 4 0 2 injection rate is equivalent to 2 gallons of foam chemical mixed in with1000 gal of water C A F foam can provide much better structural protection than what is ob
20. g should be attended If you don t read this you could 1 Cause harm to yourself or co workers 2 Cause harm to the public 3 Cause harm to the Snuffer or accessories therefore voiding warranties AWARNINCA The Snuffer is an industrial compressed air foam system and should be operated with great care to ensure accidents are avoided A qualified instructor in the proper operation of this equipment should train operators of the Snuffer This manual must stay with the Snuffer at all times Important The serial number of your unit is on the back of the front panel Please record this number along with the units model number in the space below Please refer to your model number when you call your distributor or The SNUFFER Corporation for information parts and service Model Number Serial Number Purchase Date Safety Information for Snuffer C A F S This safety alert symbol means Attention Become Alert Your safety is involved The safety alert symbol identifies important safety messages on the Snuffer and in the manual When you see this symbol be alert to the possibility of personal injury or death Follow the instructions in the safety message WHY IS SAFETY IMPORTANT TO YOU 1 Accidents disable and kill 2 Accident cost 3 Accidents can be avoided SIGNAL WORDS Note the use of the signal words DANGER WARNING and CAUTION with the safety message The appropriate signal word for each has been selected using the
21. h Air Water separator Air cooler circuit Front panel light bar for nighttime operation Light system Engine Make Kohler 2 cylinder 4 cycle air Type cooled 25 HP 3600 rpm e Output Water Pump Make ACT 8SD Single stage Type centrifugal e Inlet x Outlet 2 00 x 1 50 npt Compressor Make Stellar 4 cylinder water cooled pressure i Type lubricated 42 cfm foam delivery pressures e Output 120 psi Foam Injector Type Capacity Application rate Dimensions Depth 33 in 839 mm Width 48 in 1220 mm Height 31 in 788 mm Weight est 450 lbs 205 kg Maximum pressure Maximum pressure Water driven hydraulic Automatic flow compensating 45 gpm 120 psi 0 2 2 0 Standard Depth 33 in 839 mm Width 48 in 1220 mm Height 31 in 788 mm Weight est 450 lbs 205 kg 04 08 03 Model 45 90 Page 2 Of 2 The Snuffer Corporation Foam concentrate Braduct Srecification Fuel supply Model 45 90 Optional Features Rail mount skid system with 250 to 350 US gallon Fibreglass Plastic and Aluminium tanks available Roll out capacity for easy servicing Heated enclosure for cold weather operation Plumbing assembly for Drafting and or Tank operation Hydrant Fill Assembly External Draft when mounted with water tank Hydro 45 Aspirated foam outlet Rated Capacity 80 800 gpm of foam Stainless Steel Plumbing with Stainless Steel valves Stainless steel plumbing with Akron valves Foam i
22. hich will release the screen Hydraulic Injector Operation To start the hydraulic injection unit A Place the switch in the center position for a second and then to the ON position NOTE The unit should be running above half speed with the discharge valve open to allow water to run out the line B Foam concentrate is then pulled from the pail or operating check to see that the chemical is moving in te Lu LLC Le 3 moving after 4 or 5 seconds repeat steps A amp B The foam line can be pre primed as s mentioned previously Adjusting foam rate 1 Loosen lock nut slighty 2 Turn adjustment nut to required percentage 3 Retighten lock nut Injector Maintenance A Stop the engine and release all system pressure by opening the discharge valves B Remove the blue bell housing It is hand tightened only and is equipped with a large diameter O ring to prevent leakage C Lift out the piston and reversing mechanism Occasionally the piston unit will lift off with the bell housing Care must be taken not to drop it Clean and rinse the Filter in clear water If it is hard to clean use a toothbrush to gently brush the inside of the filter while running it under warm water If the filter still does not come clean soak it in warm water for several minutes and repeat the cleaning procedure If you find that the filter on the Hydraulic Injector s is often clogged you can install filter screens with finer
23. hose fitting and suction strainer Make sure that suction hose does not arc above the level of the pump Clogged impeller suction hose or strainer foot valve Remove and clean Insufficient submergence of suction Strainer Add lengths of suction hose to keep strainer submerged Excessively worn impeller Replace impeller Worn or damaged pump seal Replace seal C Problem Pump loses prime Probable Cause Bent shaft sa or damaged bearing on Inspect shaft and bearing Replace if needed Check PhggphMitigemeent Gecerg srien alignment of shaft for parallelism Replace if needed Quick KORY anStedr ing sealigpten 90 elbow into connector Check seal in quick connector Note If the injector clicks more then 36 times in 15 seconds you are exceeding 50 gpm You must make sure that the flow restrictor is in place Also make sure that the system pressure does not exceed 125 psi C Problem Back flow into chemical concentrate tank Probable Cause Corrective Action Worn or dirty check valves Clean or replace check valves Seal at bottom of stem is leaking Replace seal D Problem Difficult and or no chemical suction Probable Cause Corrective Action Air leak in suction hose Check suction hose fitting and suction strainer Make sure that suction hose does not arc above the level of the pump Clogged impeller suction hose or strainer foot valve Remove and clean Insufficient submergence of suction Strainer Add lengths of suc
24. if the truck s coolant heater can not keep the Snuffer area warm it may be necessary to operate the engine Snuffer system until the unit is returned to the fire station However there must be water in the tank and some water pressure showing on the water gauge to avoid burning out the pump seal Drain the Unit to Prevent Freeze up or for Storage If there is a chance of freezing temperatures it is best to place the unit inside a heated enclosure self contained or building Information on self contained winter enclosures is available from your local dealer Before shutting down the unit and with the haand lines operating it is necessary to shut the switch ofoff at the top of the injectors In this way the injectors can be p properly 1 Shut off engine Remove Suction Line from Injector Stem 2 Remove Chemical Suction Line from Hy Injector lydraulic 3 Open CAFS Valve s and Plain Water Va alve a wkniina System may be under pressuSure Relieve pressure with great care 4 Open drain Cocks _ m following locations Drain Cock on bottom of pump 5 Open valve at the bottom of the Water Filter 6 Remove the Bell Housing from the Hydraulic Injector Remove the Piston from inside and allow to air dry 12 Remove the stem from the Injectors Removed nut on bottom of injector and pull stem out Drives amp Drive Belts Air Compressor Tightner Lever Self Tightener Located on other side
25. ighten belt Defective belt Replace belt Defective Hi Low pressure switch Replace switch Defective Compressor ON OFF switch Replace switch B Problem Air Compressor engages but does not pressurize tank or run up to speed Probable Cause Corrective Action Air leak in plumbing Repair or replace faulty fitting and or lines O Rings or valve plates Clean valve plates Replace if cleaning does not correct Defective check valve Replace check valve Worn piston Check service manual for specifications Loose belt Tighten belt Drain cock on air tank is open Close drain cock C Problem Air Compressor does not recover pressure as fast as it should Probable Cause Corrective Action Air leak in suction hose Check suction hose fitting and suction strainer Make st that suction hose does not arc above the level of the pump Clogged impeller suction hose or strainer foot valve Remove and clean Aa submergence of suction ip Ligh igh DRG add synthetic air DE hs s NAS S Keep RERS Glug Ve Slaclive S lace seals oe CELL Bele air compressor oil Standard engine oil was ie use ain Rs Rae with synthetic air Compressor oil E Problem Compressor does not move air Probable Cause Corrective Action Defective belt Replace belt Defective Unloader control Repair or replace Control as needed Hi Low pressure switch not engaging Repair or replace as needed Trouble Shooting Guide 4 Chemical injectors Air leak in suction hose Check suction
26. m if not orded at the time of purchase the systems can still be added in at a later time The aspirated foam systems is standard on the 45 130 systems aspirated foam systems is NOT available on the 45 90N and 45 130N systems and can not be added into the system at a later time remote system can be added on a truck and connected to the Snuffer systems With a aspirated system you will find the same hydraulic injector as used in the Compressed Air Foam System The difference between the C A F S and aspirated system is that the air is introduced into the water stream at the nozzle This creates big medium and some small bubbles in the foam structure Aspirated foam is technically known as low expansion low energy foam Medium expansion and high expansion generators can also be installed at the end of the foam line Water travels through a self cleaning filter and then to the hydraulic injector From there the solution travels down the hand lines and to the aspirated nozzle where air is introduced into the water stream This foam system has about 100 better cooling and 2 to 4 times the knock down ability of water Operator s Controls Air Compressor Switch Water Tank F SA RICE Level Gauge aster Water Nu _ N CAFS Outlet Water Outlet Panel Lights Switch N Digital PF Tachometer Auxiliary Air Controls Aspirated Outlet Throttle and Ignition Key Hydrant Fill Draft Inlet Choke Controls Inl
27. mesh The Snuffer comes standard with a 100 mesh filter but 200 mesh are available The finer the mesh the longer the purge periods must be in order to keep the self cleaning filters clean HAND TIGHTEN ONLY If any leakage occurs check the O rings for placement or damage NOTE It is recommended that you periodically dismantle the entire Injector thoroughly rinse it with water and re assemble after having lubricated the seal with a silicone lubricant Any air leakage impurity or a seal failure can interrupt the injecting function Periodically check that all of the seals are clean and in good shape To Re assemble the Injector Before re assembly ensure that the Filter Supports and Bell Housing O Ring Seal are clean and free of foreign bodies then proceed in reverse order to the above Important in all cases tightening must only be done by hand Changing seals in the injector assembly white part Important use NO TOOLS hand tighten only Piston Plunger Seal A Relieve the pressure system by opening the discharge valves then unscrew the Bell Housing by hand and remove B Remove the Piston Assembly holding it upright C Remove the Seal Cleaning and re assembling of the Injector Chemical Suction Valve Unscrew the Plastic Nut marked as 8 and pull downward to release the Check Valve Rinse thoroughly the different parts 2 to 7 with clear water and re assemble as indicated IMPORTANT
28. njector 1 0 5 0 application rate Depth 33 in 839 mm Width 48 in 1220 mm Height 31 in 788 mm Weight est 450 lbs 205 kg 04 08 03 Model 45 90 Page 2 Of 2 The Snuffer Corporation nen p Product Specification e in Width 48 in Mada Aman Height 31 in 788 mm Weight est 450 lbs 205 kg 0 Model 45 90 Page 2 Of 2 The Snuffer Corporation Product Specifi atio while operatin ine Model 45 90 nte operating CAS nn General Specifications nStandardir Foam Svstem Frame construction Finish Plumbing Air system Light system Engine Make Type d Output Water Pump Make Type Inlet x Outlet Compressor Make Type Output Foam Injectors 2 Type Capacity Application rate Maximum pressure Maximum pressure Welded steel Powder Coated Stainless steel front panel 1 74 38 mm Sched 40 black iron pipe Air outlet with Air Water separator Air Cooler circuit Front panel light bar for nighttime operation Kohler 2 cylinder 4 cycle air cooled 27 HP 3600 rpm ACE High Performance centrifugal 2 00 x 1 50 npt Stellar 4 cylinder water cooled pressure lubricated 42 cfm foam delivery pressures 120 psi Water driven hydraulic Automatic flow compensating 45 gpm 120 psi 0 2 2 0 Standard Dimensions Depth 33 in 839 mm Width 48 in 1220 mm Height 31 in 788 mm Weight est 450 lbs 205 kg Depth 33 in 839 mm Width 48 in 1220 mm Height 31 in 788 mm
29. or does not start turn the switch to the OFF position and repeat the above procedure It will take a few seconds before you see the foam concentrate moving up the clear plastic line This process can be sped up somewhat by filling the clear plastic supply line with OFF PURGE ON foam chemical this is done by jog priming moving the line up and down quickly in the pail until the foam is 4 the way up the line or better On start up air slugging line jerking in the C A F S discharge line is normal The flow will gradually clear up and a smooth foam discharge will occur C A F S discharge distance will greatly increase as the foam solution and air stabilizes NOTE C A F S air slugs may also occur if the foam rate is too low for the particular foam you are using An easy way to tell this is to move the rate up 1 or 2 points and if the slugging clears up then the problem was the injection rate This is especially prevalent when using very cold water or poor quality foam Snuffer Operation amp Maintenance 45 90 N amp 45 130 N Page 18 An easy way to tell whether the foam setting is correct after the C A F system is up and running is to place the Wet Dry valve in the Dry position and remove the 1 and 1 16 inch tip from the 1 3 8 ID pistol grip ball valve The system should operate with a minimum of air slugging after ten to 15 seconds If it does not do so then the rate needs to be increased slightly However remember that more is
30. or damaged bearing on pump Misalignment concentricity Inspect shaft and bearing Replace if neec alignment of shaft for parallelism Replace Seal leaking due to corrosion of sealing Faces Impeller out of balance Cavitating rattling noise pressure Replace seal Inspect impeller remove an gauge fluctuating Over tightening of rebalance Make sure suction strainer on pump belt is in water Loosen belt should be 74 to 3 E Problem Lack of water pressure Probable Cause Lack of water pressure Corrective Action Check water in tank Check water intake li leaks Check self cleaning water filter screen Fill fuel tank with clean fuel No fuel or contaminated fuel Fuel line connect fuel line Replace line not connected properly Fuel line Replace line Check level and cracked or crimped Diesel fuel return if needed Clean filter line crimped Not enough oil in crank case Air filter dirty B Problem Low oil pressure Probable Cause Low oil level Loos Corrective Action GO ban air Wed recommended oil Tighten pump cover Worn or defective oil plug Replace or repair as pump needed C Problem No oil pressure Probable Cause Corrective Action Trouble Shooting Guide 3 Air Compressor A Problem Air Compressor will not engage Probable Cause Corrective Action Blown fuse Replace fuse Clutch wire not connected Reconnect wire check wiring diagram Defective clutch Repair or replace clutch Loose belt T
31. r easy maintenance and servicing 2 In order to allow the Snuffer to move in and out on the Rollout skid frame sufficient hose lengths must be provided to prevent crimping 3 A water tank level gauge should be installed 4 For greater operator convenience the Snuffer systems should be equipped with a 1 50 38mm Hydrant Fill line this line will allow the operator to fill the water tank using a external pump source NOTE A Tank fill valve can also be installed This allows the operator to fill the water tank by using the Snuffer pump Gasoline Engine Preparation Fuel line can be taken directly from the truck s fuel tank as long as a small electric fuel pump is installed or the unit can be equipped with a marine type portable fuel tank with quick connectors Position the tank away from the engine in a well ventilated area Before Starting Check the engine and air compressor oil levels A For water tank equipped systems make sure the valve is open to draft from an external source of water or from the tank B Use a draft line 2 50 64mm or larger that is equipped with a reliable Suction Strainer Make sure that the suction line has a smooth gentle curve down to the water source The draft line should never curve upward and then down to the pump as it may cause air locks reng Pezitien Correct Installation of Draft Line C Foam chemical lines should be connected and foam foot valves fully inserte
32. ssed air foam approximately doubles the effectiveness when knocking down fires as compared to water driven stream enductor or injector systems This is due to the uniform tiny bubble structure that the Compressed Air Foam System produces The A amp B foams used by the department should be tested to make sure they are compatible Other Foams Certain ABD foams can also be used effectively to cut off three dimensional fires and certain metals such as solid magnesium titanium shavings A non It is important that fire departments are trained well on any particular foam that they are using They must make sure that when changing to a new brand of foam it is tested for compatibility with other foams used by the department and that adequate training takes place Foam types Suggested uses for the five types of Compressed Air Foam This chart shows recommended nozzle tip sizes and what type of foam is produced when the system is set to the DRY or WET position along with either the Nozzle tip ON or OFF the hand line valve Important The serial number of your unit is on the back of the front panel Please record this number along with the units model number in the space below Please refer to your model number when you call your distributor or The SNUFFER Corporation for information parts and service Dry Foam 20 to 25 gpm 64 L min 1 Dry Foam 10 12 times expansion e Produces 250 300 gpm 950 1140 L min of Dry
33. tainable with the use of plain water or aspirated foam low expansion low energy The dry foam that is produced by C A F S is like shaving cream as shown below and will stick to vertical and overhead surfaces Compressed Air Foam Theory The tiny bubble structure in C A F it is much effective than aspirated foam in extinguishing fires and protecting exposures Compressed air foam will stick to walls and ceilings holding the water in contact with the fuel When using plain water 90 to 95 of the water ends up on the floor In general C A F is 7 to 15 times better in fire suppression as compared to plain water and up to 20 times more effective on overhead surfaces Class A foam is 15 to 30 times more effective than plain water in extinguishing petroleum fires Class A foam should not be used on petroleum fires where rescue is involved Tire fires are easily controlled with an initial wet foam application followed by a dry foam application Class A AB B and ABD foams are all made more effective when applied as compressed air foam Aspirated Foam Medium to high expansion foam The Snuffer with the Chemical Injector ON and the Air Compressor OFF will allow the operator to use medium to high expansion low density low energy aspirating devices for fire control and prevention Foam rates are generally 0 5 to 1 0 for Class A and 1 0 for Class B Aspirated Foam Outlet aspirated foam system is optional on the 45 90 syste
34. the screen is partially plugged clean it in warm water with a toothbrush To inspect the filter screen A Shut off the Snuffer unit and release all system pressures B Open the drain valve for the required filter Disconnect the drain line from the bottom of the filter by pulling back on the collar of the quick disconnect Slowly unscrew and remove the filter housing C Remove the screen and inspect condition and foreign material build up If foreign material builds up is excessive it may mean that the operator is not p often enough or not allowing enough water to continuously flow out of the valv the filter body It should be noted that if rusty or muddy water is used the val self cleaning filter should be opened fully to allow 8 to 10 gpm of water to flow cut ur mie imer 101 to 5 seconds of operation This action should keep the filter screen clean The operator by removing the filter screen from the canister can then judge the best purge intervals With very dirty water it may be necessary to run the filter valve continuously NOTE 1 When reassembling the filter canister HAND TIGHTEN ONLY 2 On disassembly of the filter canister from the body if the screen is difficult to remove from the canister it is usually due to foreign material at the base of the screen lf it becomes necessary the fitting on the bottom of the canister can be placed in a vice and the black stem inside the screen can then be screwed out of the body w
35. tion hose to keep strainer submerged Excessively worn impeller Replace impeller Worn or damaged pump seal Replace seal C Problem Pump loses prime Probable Cause Bent shaft and or damaged bearing on Aa eo Inspect shaft and bearing Replace if needed Check pump Misalignment concentricity alignment of shaft for parallelism Replace if needed Seal leaking due to corrosion of sealing Faces Impeller out of balance Cavitating rattling noise pressure Replace seal Inspect impeller remove any debris and gauge fluctuating Over tightening of rebalance Make sure suction strainer on suction hose pump belt is in water Loosen belt should be 4 to 3 8 play SNUFFER 4000 Series C A F S Single line Compressed Air Foam Systems Snuffer 4000 Series systems are U L C listed Model 2540 Models 45 90 45 130 Stand Alone System Stand Alone Systems TreSnuffer gt i a oe Snuffer 8000 Series C A F S Doulbe line Compressed Air Foam Systems Model 8500 HD Model 8900 Hydraulic Drive System Stand Alone System 3 SAFETY RENTALS LTD
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