Manual for 50 lb. stored pressure wheeled
Contents
1. 1 Connect hose coupling to outlet on the extinguisher Lay hose straight on ground to its full 25 ft length Start first regular loop counter clockwise by placing between side brackets and over the top bracket 2 The second loop is a REVERSE loop Notice that the hose passes behind the loop on this reverse loop If instructions are followed the hose will uncoil without kinks 3 The next loop is a regular hose in front loop Succeeding loops are alternated reverse front reverse etc for six full loops O O E r O c amp Q O ou O Wheeled or Stationary Dry Chemical Fire Extinguishers 4 Adjust the loops so that the nozzle fits into the nozzle mount Loops should be approximately the same size PARTS LIST for 50 Ib Wheeled Stored Pressure Dry Chemical Extinguishers 473 495 474 496 475 497 Item Part Std No No Description Pkg 1 06018 Valve Asy Complete w Downtube 1 2 06072 Downtube Retainer Assembly 1 3 06625 Carriage Assembly w o Wheels 1 Pressure Valve amp Cap Assembl 4 00155 older Models Oniy J 12 H rt w Hardware H ee ace eee ape el l 6 06375 Hose Clip w Mounting Hardware 1 T 06376 Nozzle Mount w Hardware 1 8 07480 Pictogram Model 495 473 4 07482 P2. Wy OWNERS SERVICE MANUAL NO 05612 INSTALLATION OPERATING amp SERVICING INSTRUCTIONS All fire extinguishers should be installed inspected and maintained in accordance with the National Fire Protection Association standard titled Portable Fire Extinguishers NFPA 10 and the requirements of local authorities having jurisdiction When maintenance is indicated it should be performed by trained persons having proper equipment Fire extinguishers are pressure vessels and must be treated with respect and handled with care They are mechanical devices and require periodic maintenance to be sure that they are ready to operate properly and safely Amerex strongly recommends that the maintenance of portable fire extinguishers be done by a trained professional your local authorized Amerex Distributor Amerex Corporation makes original factory parts available to insure proper maintenance USE OF SUBSTITUTE PARTS RELEASES AMEREX OF ITS WARRANTY OBLIGATIONS Amerex parts have machined surfaces and threads that are manufactured to exacting tolerances O rings hoses nozzles and all metal parts meet precise specifications and are subjected to multiple in house inspections and tests for acceptability There are substitute parts available that may be incorrectly labeled as UL component parts some are advertised as Amerex type None of these meet UL requirements and all of them voids the Amerex extinguisher warranty and UL listing DO NO
3. cylinder interior following CGA Visual Inspection Standard C 6 Using an accurate scale fill cylinder with the correct amount and type of dry chemical specified on the label nameplate Use Amerex chemical which has been kept free of moisture and contamination See Warning g DO NOT MIX TYPES OF CHEMICALS Clean cylinder collar o ring seat and collar threads with a small brush and then wipe off surfaces with a clean cloth to remove dust Lightly brush the collar o ring seat with Visilox V 711 10 11 12 13 Install verification of service external collar tag Install discharge valve assembly and attach pressurizing adapter P N 06160 to discharge port Pressurize extinguisher with dry nitrogen to 240 psi Nitrogen supply regulator should be set to no more than 265 psi This will insure proper aeration of the chemical Check extinguisher for leaks by applying detecting fluid or a solution of soapy water to the nitrogen charging adapter orifice around the collar o ring sealing area cylinder welds and gauge Remove the pressurizing adapter Install discharge hose and discharge nozzle assembly see instructions Install ring safety pin and lockwire tamper seal Attach new recharge tag Return extinguisher to its proper location Mountings for stationary extinguishers should be properly secured TROUBLESHOOTING GUIDE WARNING Before attempting to correct any leakage problem be sure that the agent cylinder and hose
4. ARGE OF AMEREX FIRE EXTINGUISHERS ONLY NO INSTRUCTION MANUAL CAN ANTICIPATE ALL POSSIBLE MALFUNCTIONS THAT MAY BE ENCOUNTERED IN THE SERVICE OF FIRE EXTINGUISHERS DUE TO THE POSSIBILITY THAT PRIOR SERVICE PERFORMED ON THIS EQUIPMENT MAY HAVE BEEN IMPROPERLY DONE IT IS EXTREMELY IMPORTANT THAT ALL WARNINGS CAUTIONS AND NOTES IN THIS MANUAL BE CAREFULLY OBSERVED FAILURE TO HEED THESE INSTRUCTIONS COULD RESULT IN SERIOUS INJURY AMEREX ASSUMES NO LIABILITY FOR SERVICE MAINTENANCE OR RECHARGE OF FIRE EXTINGUISHERS BY PUBLISHING THIS MANUAL PREPARING YOUR NEW EXTINGUISHER FOR USE 1 Examine the extinguisher for evidence of shipping damage Notify the delivering carrier immediately if any damage is discovered 2 Remove all wrappings straps and pallet retaining bolts 3 Check to insure that the hose connection to the operating valve and shut off nozzle to the hose are tight 4 Check to insure that the shut off nozzle is in the closed position The ring safety pin should be installed in the operating valve and the lockwire tamper seal intact 5 This extinguisher is shipped from the factory fully charged Visually inspect the pressure gauge the pressure should be in the green zone 240 psi approx 10 psi range The most accurate method to determine if the extinguisher is filled with the proper amount of chemical is to weigh the unit The gross weight is indicated on the nameplate label NOTE Slight pressure vari
5. ED AND THE USE NOT REPORTED BE PREPARED FOR A POSSIBLE DISCHARGE AND NOZZLE RECOIL Check the nozzle shutoff lever for freedom of movement open and close several times If the operation is impeded disassemble the nozzle replace parts and or properly lubricate as necessary Make sure that the nozzle tip is clear and unobstructed After making sure that there is no residual pressure in the discharge hose disconnect it from the operating valve Blow air through the hose and nozzle assemblies to insure that the passage is clear of foreign material Check the couplings hose and hose gasket for damage or deterioration replace as necessary Inspect the valve assembly for corrosion or damage to hose thread connection Replace valve assembly or component parts as necessary following the proper depressurization and recharge procedures If valve removal is necessary complete all steps in the Recharge Procedure Reconnect the hose to the agent cylinder Properly coil the hose on the rack and install the nozzle with the lever in a closed position on the mount NOTE WHEN ASSEMBLING THE HOSE TO THE AGENT CYLINDER OR NOZZLE TO THE HOSE TIGHTEN THE COUPLING TURN AFTER CONTACTING THE HOSE GASKET Inspect the wheels on Models 495 496 or 497 to insure they rotate freely Lubricate as required On stationary models check mountings to insure that they are securely fastened Check carriage assembly for loose nuts bolts frame distortion or damag
6. EPARING TO MOVE THE EXTINGUISHER TO THE RECHARGE LOCATION DETERMINATION MUST BE MADE THAT THE FIRE IS COMPLETELY EXTINGUISHED AND THERE IS NO DANGER OF A FLASHBACK Tip the extinguisher to the horizontal position resting on the carriage handle and slowly push the T handle on the cylinder discharge valve to the open position Slowly push the nozzle lever to the open position and be prepared for some chemical discharge When all pressure has been evacuated from the extinguisher return the nozzle lever and cylinder discharge valve to the closed position NOTE These steps will allow easy depressurization of the extinguisher and clear the hose assembly with a minimal loss of remaining chemical Return the extinguisher to the upright position Coil the hose onto the storage rack and position the nozzle into the mount in preparation for transport to the recharge location RECHARGE EXTINGUISHERS IMMEDIATELY AFTER ANY USE INSPECTING THE EXTINGUISHER This extinguisher should be inspected at regular intervals monthly or more often if circumstances dictate to insure that it is ready for use Inspection is a quick check that a fire extinguisher is available and is in operating condition It is intended to give reasonable assurance that the fire extinguisher is fully charged This is done by verifying that it is in its designated place that it has not been actuated or tampered with and that there is no obvious physical damage or condition to p
7. T SUBSTITUTE RECHARGE FIRE EXTINGUISHERS IMMEDIATELY AFTER ANY USE REFERENCES IN THIS MANUAL AVAILABLE FROM NFPA 10 Portable Fire Extinguishers National Fire Protection Association 1 Batterymarch Park P O Box 9101 Quincy MA 02269 9101 CGA C 1 Methods for Hydrostatic Testing of Compressed Gas Association Inc Compressed Gas Cylinders 4221 Walney Road 5 Floor CGA C 6 Standard for Visual Inspection of Chantilly VA 20151 2923 Compressed Gas Cylinders AMEREX CORPORATION P O BOX 81 TRUSSVILLE ALABAMA 35173 0081 Phone 205 655 3271 Fax 800 654 5980 e mail sales amerex fire com Web Page http www amerex fire com Printed in U S A 0M05612E Rev 08 10 h gt Pa wt cs 6 YS F Osa qOsou Zma Ors XxX 2E Daz O u2 aa Ww ss W 2a fie Sip w o9 Ugs Stlwa NOR O gt ru Wes mono Qe A air a2 opz oO Ns O5 a lt q THIS MANUAL IS ATTACHED TO EVERY NEW EXTINGUISHER SHIPPED FROM THE FACTORY IT CONTAINS VALUABLE INFORMATION WHICH SHOULD BE STUDIED BY EVERYONE WHO WILL USE OR SERVICE THE EXTINGUISHER THE MANUAL SHOULD BE STORED IN A CONVENIENT LOCATION FOR EASY REFERENCE INTRODUCTION The Amerex 50 pound Models 495 ABC 496 Regular amp 497 Purple K Stored Pressure Wheeled and Models 473 ABC 474 Regular amp 475 Purple K Stationary Dry Chemical fire extinguishers are designed to provide larger volumes of dry chemical fire fighting agent than hand portable ty
8. ances in the gauge reading may be found if the extinguisher has been subjected to extremes of heat or cold High temperatures can cause high gauge readings and low temperatures low readings When in doubt condition the extinguisher to 70 F 21 C for several hours to obtain more accurate pressure gauge readings 6 Record the date the unit is being placed into service on the inspection tag and attach it to the extinguisher INSTALLATION Do not place this extinguisher close to a potential fire hazard Amerex recommends location no less than a 50 foot distance from the hazard while leaving an unobstructed access Avoid placing it in an extremely hot or cold place The operational temperature range for this extinguisher is 40 F to 120 F 40 C to 49 C The extinguisher should be adequately protected if temperatures outside of this range are anticipated Keep the extinguisher clean and free from dirt ice chemicals and any contaminants which may interfere with its proper operation Do not functionally test this fire extinguisher Testing or any use may cause the extinguisher to gradually lose pressure and become ineffective OPERATION NOTE Persons expected to use this extinguisher should be trained in initiating its operation and in the proper fire fighting technique Familiarize all personnel with this information before an emergency occurs Move the extinguisher to within approximately 30 feet of the fire site Keep the extin
9. are completely depressurized Check to determine the source of a leak before the extinguisher is depressurized Leakage repairs will require depressurization and removal of the valve assembly Depressurize by discharging into a Closed Recovery System or inverting the extinguisher After depressurizing the extinguisher and correcting the problem it will be necessary to clean all valve parts thoroughly PROBLEM CORRECTIVE ACTION 1 Leak at collar o ring Remove valve assembly remove and discard o ring clean collar and lube lightly with Visilox V 711 Clean o ring groove on valve and install new collar o ring Lubricate with Visilox V 711 2 Leak through valve Check valve stem seating area for scratches or foreign matter Clean seating area with a tooth brush and soft cloth Install new valve stem assembly 3 Leak around gauge Remove gauge clean threads and reinstall using Teflon tape on the gauge threads 4 Defective gauge Remove defective gauge an install the proper Amerex pressure gauge P N 05225 240 psi using Teflon tape on the gauge threads 5 Leak in the cylinder Contact Amerex if under warranty otherwise mark REJECTED and remove from service or return to owner Pressure gauge threads are coated with a special epoxy at the factory For easy removal soak the valve assembly in hot water 180 F for two to four minutes Remove gauge with a thin 7 16 open end wrench
10. e Check welds for damage or corrosion Replace damaged parts or make repairs as necessary Install new lockwire tamper seal and record service data on the extinguisher inspection tag If the extinguisher has been moved to perform service make sure that it is returned to its proper location COMPLETE MAINTENANCE SIX YEAR TEARDOWN NFPA 10 Every six years stored pressure extinguishers that require a 12 year hydrostatic test shall be emptied and subjected to the applicable maintenance procedures When the applicable maintenance procedures are performed during periodic recharging or hydrostatic testing the six year requirement shall begin from that date NOTE Some states have legislation which requires Complete Maintenance on an annual basis Please contact your local Amerex Distributor to see if these requirements apply to you NFPA 10 recommendation requires that a verification of service external collar tag be installed on the extinguisher whenever a Six Year Maintenance is performed The verification of service tag can only be installed if the operating valve has been removed 1 Discharge chemical and pressure into a closed dry chemical recovery system several are commercially available Make sure that the extinguisher is completely empty and depressurized NOTE A closed recovery system is designed to prevent loss of the chemical fines Loss of the fines could result in reduced extinguisher efficiency 2 Clean
11. extinguisher to remove dirt grease or foreign material Check to make sure that the instruction nameplate is securely fastened and legible Inspect the cylinder for corrosion abrasion dents or weld damage If any of these conditions are found and you doubt the integrity of the cylinder hydrostatically test to factory test pressure marked on the nameplate label using the proof pressure method in accordance with CGA C 1 and NFPA 10 NOTE When cleaning avoid use of solvents around the pressure gauge They could seriously damage the plastic gauge face 3 Inspect the extinguisher for damaged missing or substitute parts Only factory replacement parts are approved for use on Amerex fire extinguishers 4 Check the date of manufacture on the extinguisher label nameplate Cylinder must be hydrostatically proof pressure tested every 12 years to the test pressure indicated on the nameplate 480 psi 3310 kPa 5 Visually inspect the pressure gauge if bent damaged or improper gauge replace with the proper Amerex pressure gauge see Parts List 6 Check ring pin for freedom of movement Replace if bent or if removal appears difficult 7 Verify that no pressure remains in the extinguisher Operating valve and nozzle shutoff in open position and there is no discharge 8 Check the nozzle shutoff lever for freedom of movement open and close several times If the operation is impeded disassemble the nozzle replace parts and or p
12. guisher upright CAUTION This extinguisher must be operated in an upright position If equipped with an optional tow loop and vehicle towed to the fire scene remove from tow hitch and operate in a vertical position Twist and pull ring pin Open cylinder discharge valve by rotating pulling the T handle valve lever toward the hose The hose is now pressurized with chemical Pull nozzle with lever in the closed position from the mount and extend the hose from the storage rack Stand back 15 feet from the fire and aim the nozzle at base of flames nearest you Open nozzle by pulling handle toward you be prepared for a discharge recoil by holding the nozzle firmly Sweep side to side across the base of the fire and past both edges Progressively follow up until the fire is extinguished Work the fire away from you while being alert for flashbacks Move closer as the fire is extinguished but not so close as to scatter or splash the burning materials When the fire is out push the nozzle lever forward to the closed position Push the T handle on the cylinder discharge valve to the closed position Evacuate and ventilate the area immediately after extinguishing the fire The fumes and smoke from any fire may be hazardous and can be deadly DISCHARGE TIME 35 SECONDS APPROXIMATELY EFFECTIVE RANGE OF AGENT THROW IS 25 TO 30 FEET HOSE LENGTH 25 FEET SHUTDOWN CAUTION BEFORE PERFORMING THE SHUTDOWN PROCEDURE AND 1 2 PR
13. ictogram Models 496 497 474 475 Wheel Assembly 12 1 2 w Hub z isle Cap Washer amp Retaining Pin 1 10 04945 Hub Cap 1 11 06373 Valve Lever T Handle Complete 1 12 06153 Valve Body 1 13 05225 Gauge 240 psi 1 14 06100 Ring Pin Stainless Steel w Wire 12 15 01387 Lockwire Seal Yellow 500 16 05240 Collar O Ring 24 Collar O ring Bulk Bag 100 17 06022 Valve Stem Assembly 6 18 00383 Spring 6 19 07247 Gasket Hose 6 20A 06056 Gasket Valve 6 20 06015 Hose Assembly 25 ft w Gasket 1 06397 Nozzle Asy Ball Viv amp Tip 495 473 21 06395 Nozzle Asy Ball Viv amp Tip 496 474 1 06396 Nozzle Asy Ball Viv amp Tip 497 475 22 06031 Ball Valve Assembly 1 23 03877 Gasket Nozzle 6 06208 Nozzle Tip 495 473 328 24 06032 Nozzle Tip 496 474 265 1 06210 Nozzle Tip 497 475 281 ALL FILL amp HYDROTEST ADAPTERS SEE ADAPTER PAGE REPLACEMENT VALVE ASSEMBLIES INCLUDE VALVE BODY GAUGE LEVER VLV STEM ASY SPRING amp A HANDLE 10
14. m dew point of minus 70 F minus 57 C Set the regulator to no more than 265 psi 1827 kPa Check and calibrate regulator gauge at frequent intervals The regulator gauge should be used to determine when the intended charging pressure has been reached Do not use the extinguisher gauge for this purpose Never leave an extinguisher connected to a regulator of a high pressure source for an extended period of time A defective regulator could cause the cylinder to rupture due to excessive pressure Do not mix types of dry chemicals in extinguishers recharge or recovery systems Mixing ABC acidic base with Regular Purple K Super K or Monnex alkaline base dry chemicals may result in a chemical reaction capable of developing a dangerous pressure buildup RECHARGING PROCEDURE Perform steps 1 through 12 of the Complete Maintenance Six Year Teardown section Thoroughly clean all parts of the disassembled valve with a soft bristle brush or soft cloth Blow the valve out with air or nitrogen Inspect the collar o ring spring and downtube assembly and replace parts if worn or damaged Replace the valve stem Lubricate the collar o ring and small o ring on the valve stem with Visilox V 711 do not lubricate the valve stem seal Reassemble the valve assembly including downtube and set aside Remove any chemical remaining in the cylinder and check the condition Properly dispose of any chemical that is contaminated or caked Inspect the
15. ny damage is found hydrostatically test to factory test pressure 480 psi 8310 kPa using the proof pressure method in accordance with instructions in C 6 and NFPA 10 See proper method of depressurizing and reclaiming chemical in Recharge procedures NOTE WHEN CLEANING AVOID USE OF SOLVENTS AROUND THE PRESSURE GAUGE THEY COULD SERIOUSLY DAMAGE THE PLASTIC GAUGE FACE 2 Inspect the extinguisher for damaged missing or substitute parts Only factory replacement parts are approved for use on Amerex fire extinguishers 3 Weigh the extinguisher and compare with weight printed in the Maintenance section on the nameplate label Recharge extinguisher if weight is not within indicated allowable tolerances 4 10 11 12 13 14 Check the date of manufacture printed on the extinguisher label nameplate or on the agent cylinder dome The agent cylinder must be hydrostatically tested every 12 years to the test pressure indicated on the nameplate 480 psi 3310 kPa Visually inspect the pressure gauge a If bent damaged or improper gauge depressurize and replace b If pressure is low check for leaks c If over pressurized overcharged depressurize the extinguisher and follow recharge instructions Check ring pin for freedom of movement Replace if bent or if removal appears difficult WARNING ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY ANY EVIDENCE OF AGENT IN THE NOZZLE INDICATES THAT THE UNIT MAY HAVE BEEN US
16. pes for industrial applications The wheeled version can easily be transported and operated by one person and in a stationary configuration and can be mounted in a small space The cage type carriage provides protection for the operating valve cylinder and hose assembly Easy rolling 12 1 2 inch semi pneumatic rubber tires assure minimum effort to quickly transport them through narrow spaces to a fire scene An easy to operate T handle assures instant on extinguisher discharge All valve components hose couplings and nozzle shut off are machined brass for easy maintenance A quality paint finish tops off a prime coated cylinder and carriage assembly for years of trouble free use These models carry an Amerex warranty of six years see full wording of the warranty below Field recharging is possible utilizing maintenance recharge equipment available through your Amerex Distributor To provide optimum extinguisher reliability recharging should be performed by persons trained in fire extinguisher maintenance and servicing This manual should be used as a guide for installing operating and servicing this extinguisher The best place to have your extinguisher serviced and recharged is your Authorized Amerex Distributor who has the professional experience and equipment to do it properly SIX YEAR LIMITED WARRANTY Amerex warrants its fire extinguishers to be free from defects in material and workmanship for a period of six 6 years from the da
17. revent its operation PERIODIC INSPECTION PROCEDURES Monthly or more often if circumstances dictate NFPA 10 Periodic inspection of fire extinguishers shall include a check of at least the following items Location in designated place No obstruction to access or visibility Pressure gauge reading or indicator in the operable range or position Operating instructions on nameplate and facing outward Safety seals and tamper indicators not broken or missing Examination for obvious physical damage corrosion leakage or clogged nozzle Determine fullness by weighing NOOT BON MAINTENANCE NFPA 10 At least once a year or more frequently if circumstances require maintenance should be performed Maintenance is a thorough check of the extinguisher It is intended to give maximum assurance that a fire extinguisher will operate effectively and safely It includes a thorough examination for physical damage or condition to prevent its operation and any necessary repair or replacement It will normally reveal if hydrostatic testing or internal maintenance is required MAINTENANCE SERVICE PROCEDURE NOTE THIS PROCEDURE WILL BE BEST ACCOMPLISHED WITH THE EXTINGUISHER IN AN UPRIGHT POSITION AND ON A LEVEL SURFACE 1 Clean extinguisher to remove dirt grease or foreign material Check to make sure that the instruction nameplate is securely fastened and legible Inspect the cylinders for corrosion abrasion dents or weld damage If a
18. roperly lubricate as necessary Make sure that the nozzle tip is clear and unobstructed 9 Disconnect the discharge hose from the operating valve Blow air through the hose and nozzle assemblies to insure that the passage is clear of foreign material Check the couplings hose and hose gasket for damage or deterioration replace as necessary The discharge hose should be hydrostatically tested to 480 psi 8310 kPa every twelve years 10 Inspect the wheels to insure they rotate freely Lubricate as required 11 Check carriage assembly for loose nuts bolts frame distortion or damage Check welds for damage or corrosion Replace damaged parts or make repairs as necessary WARNING Valve removal and or valve part replacement should be made only after completing the depressurizing procedures listed in Step 1 of the Complete Maintenance section 12 Remove operating valve assembly Inspect for corrosion or damage to hose thread connection 13 Compl ete steps 2 through 14 of Recharge Procedure RECHARGE WARNING a b Before attempting to disassemble be sure the extinguisher is completely depressurized Never have any part of your body over the extinguisher while removing the valve assembly Use a protective shield between you and the pressure gauge while charging an extinguisher Do not stand in front of the gauge if a shield is not available Use a regulated pressurizing source of dry nitrogen only with a minimu
19. te of purchase During the warranty period any such defects will be repaired or the defective extinguisher replaced if only factory replacement parts and recommended service equipment have been used to service the extinguisher This warranty does not cover defects resulting from modification alteration misuse exposure to unusually corrosive conditions nor improper installation or maintenance All implied warranties including but not limited to warranties of fitness for purpose and merchantability are limited to the time periods as stated above In no event shall Amerex Corp be liable for incidental or consequential damages Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so that the above limitations or exclusions may not apply to you Amerex Corp neither assumes nor authorizes any representative or other person to assume for it any obligation or liability other than expressly set forth herein This warranty gives you specific legal rights and you may also have other rights which may vary from state to state To obtain performance of the obligation of this warranty write to Amerex Corp P O Box 81 Trussville AL 35173 0081 for instructions AMEREX CORPORATION DOES NOT SERVICE MAINTAIN OR RECHARGE FIRE EXTINGUISHERS THIS MANUAL IS PUBLISHED AS A GUIDE TO ASSIST QUALIFIED SERVICE PERSONNEL IN THE INSPECTION MAINTENANCE AND RECH
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