OWNERS SERVICE MANUAL
Contents
1. seriously damage the plastic gauge face Inspect the extinguisher for damaged missing or substitute parts ONLY FACTORY REPLAEMENT PARTS ARE APPROVED FOR USE ON AMEREX FIRE EXTINGUISHERS 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 Visually inspect the pressure gauge if bent damaged or improper type or pressure replace with the proper Amerex pressure gauge see Parts List Check ring pin for freedom of movement Replace if bent or if removal appears difficult Inspect discharge lever for any dirt or corrosion which might impair freedom of movement Inspect carrying handle for proper installation If lever handle or rivets are damaged replace with proper Amerex parts Remove nozzle or hose and horn assembly and visually inspect threads on nozzle or hose coupling horn and hose for damage and replace as necessary Blow air through nozzle or hose and horn to insure passage is clear of foreign material Inspect the valve assembly for corrosion or damage to nozzle or hose thread connection Replace valve assembly or component parts as necessary WARNING Before attempting to disassemble the extinguisher be sure it is completely depressurized Remove and disassemble valve assembly by removing downtube spring and valve stem assembly Install a new valve stem and collar o ring after lig2. B410 A B417 Item Part Std No No Description Pkg 1 12699 Valve Assembly A620 1 11823 ALL OTHER MODELS 1 1A 14220 Hanger Loop w Screw Optional 6 12494 Nozzle A620T 076 Short 01926 417 A B417 129 03741 409 416T A B409 A B416 173P 2 03211 403 A B403 120ST 6 01276 410 A B410 120 01253 425 166 03353 459 144 3 01412 Ring Pin 24 16353 Ring Pin 1 lb amp 2 lb 24 3A 00532 Chain Nylon for Ring Pin 24 4 01387 Lockwire Seal Yellow 500 5 11825 Lever amp Rivet A B Valve 1 5A 01060 Rivet Only for Lever Old amp A B Viv 24 5B 06067 Lever amp Rivet A620 1 02625 Lever amp Rivet Forged Valve 1 6 08184 Gauge 100 psi for A620 6 03103 Gauge 195 psi 6 7 11826 Handle amp Rivet A B Valve 1 7A 01064 Rivet Only for Handle All Valves 24 09001 Handle amp Rivet A620 1 7B 09002 vae amp Rivet 2 1 2 amp 5 Ib Forged 1 09003 Handle amp Rivet 6 Ib Forged Viv 1 8 05241 Collar O Ring 24 Collar O Ring Bulk Bag 100 9 06092 Valve Stem Assembly 6 Valve Stem Assembly Bulk Bag 96 10 05235 Valve Stem O Ring 24 11 01074 Spring 6 06069 Downtube Retainer Asy A620 417 C403 403 410 A417 yo 2107 Aao3 aato f 06212 409 425 416 A B409 B403 B410 B417 A B416 03397 459 ALL BRACKETS SEE BRACKET PAGE ALL FILL amp HYDROTEST ADAPTERS SEE ADAPTER PAGE ALL VALVE ASSEMBLIES INCLUDE VALVE BODY
3. GAUGE LEVER amp HANDLE Ea optional PARTS LIST for 5 20 Ib Dry Chemical Hose amp Horn Aluminum Valve Models 400 443 A B457 A400 A B443 479 A B402 453 A B479 A411 A B453 500 A412 456 A B500 A413 B456 Item Part Std No No Description Pkg 1 11823 Valve Assembly 5 51 6 amp 10 Lb 1 11824 20Lb 1 1A 14220 Hanger Loop w Screw Optional 6 07641 Hose amp Horn Asy 400 A400 149 14849 A B402 157 06215 453 A B453 A B500 147 05248 479 500 443 A B479 A B443 152 2 05564 456 A B456 A B457 191 1 06541 B456X 166 08759 B459X 136 11221 A411 209 11658 A411X 221 11223 A412 A413 177 01532 Hose Gasket O Ring All 5 6 amp 10 Lb 24 06978 A411 A412 A413 24 4 01412 Ring Pin 24 4A 00532 Chain Nylon for Ring Pin 24 5 01387 Lockwire Seal Yellow 500 Lever amp Rivet A400 A B402 A B453 6 11825 A B479 A B500 A B443 A B456 1 A B457 A411 A412 A413 6A 01060 Rivet Only for Lever Old amp A Valve 24 6B 02625 Lever amp Rivet 400 453 479 443 456 1 7 03103 Gauge 195 psi 6 Handle amp Rivet 400 A B402 A B453 8 11826 A B479 A B500 A B443 A B456 1 A B457 12405 A411 A412 A413 8A 01064 Rivet Only for Handle All 5 10 Ib 24 12201 A411 A412 A413 3B 0
4. 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 WARNING BEFORE SERVICING BE SURE THE EXTINGUISHER AGENT CYLINDER IS NOT 10 11 12 PRESSURIZED THIS PROCEDURE IS BEST ACCOMPLISHED WITH THE EXTINGUISHER IN AN UPRIGHT POSITION AND ON A LEVEL SURFACE Clean extinguisher to remove dirt grease or foreign material Check to make sure that the instruction nameplate is securely attached and legible Inspect the cylinders for corrosion abrasion dents or weld damage If any damage is found hydrostatically test in accordance with instructions in CGA C 1 and C 6 and NFPA 10 Note When cleaning avoid use of solvents around the pressure gauge They could seriously damage the plastic gauge face Inspect the extinguisher for damaged missing or substitute parts Only factory replacement parts are approved for use on Amerex fire extinguishers 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 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 Visually inspect the pressure g
5. 6215 Hose amp Horn Asy are both Valid for use on Models 500 amp 500T
6. 9002 Handle amp Rivet 453 479 500 1 09003 400 443 456 9 05241 Collar O Ring 24 Collar O Ring Bulk Bag 100 10 06092 Valve Stem Assembly 6 Valve Stem Assembly Bulk Bag 96 11 05235 Valve Stem O Ring 24 12 01074 Spring 6 01519 Downtube Retainer Assembly 456 A B456 A B457 13 11674 A411 A412 A413 1 06212 A B402 453 479 500 A B453 A B479 A B500 03397 400 443 A400 A B443 15747 Strap amp Clip Asy Black Plastic 3 8 Hose 14 SIE ip Asy Black Plastic 1 2 Hose i i ack Plastic ose 14778 AII 20 Ib i 15 12383 Protective Ring for Bottom of Cylinder 7 1 ALL BRACKETS SEE BRACKET PAGE ALL FILL amp HYDROTEST ADAPTERS SEE ADAPTER PAGE ALL VALVE ASSEMBLIES INCLUDE VALVE BODY GAUGE LEVER amp HANDLE P N 05248 amp P N 06215 Hose amp Horn Asy are both Valid for use on Model 500 OPTIONAL PARTS LIST for 5 30 Ib Dry Chemical Brass Valve Models 408 B441 461 415 447 B461 419 B447 462 423 460 B462 424 B460 692 B424 693 Part Std e No Description Pkg 1 11952 Valve Assembly All models 1 Hanger Loop w Screw B 1A 19363 Models B441 B447 B460 10 Ib a Hanger Loop w Screw 1B 16694 51b 61b amp 20 Ib 2 05240 Collar O Ring 24 Collar O Ring Bulk Bag 100 03753 H
7. OWNERS SERVICE MANUAL NO 05602 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 NOT SUBSTIT
8. UTE RECHARGE FIRE EXTINGUISHERS IMMEDIATELY AFTER LL i lt x a LL lt x Z O a oc lt q 2 ma gt ip i lt O a x L X A am A a dp lt q m LI F S V ai IS U m SS Oz Z9 er X lt lt TIA W o Cr g lt f SE gt q W g 5 gt aS QA z O lt O a lt x ANY USE REFERENCES IN THIS MANUAL AVAILABLE FROM NFPA 10 Portable Fire Extinguishers National Fire Protection Association Lu l aa lt m cc O A m Z lt z LLI cc U p Lu cc Oo OQ Lu cc O me ep 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 OM05602E Rev 10 11 INSTALLATION Your layout and particular hazards dictate the placement of fire extinguishers NFPA 10 requires that hand portable extinguishers with a gross weight less than 40 lbs be hung with the top of the extinguisher not more than 5 ft 1 53 m above the floor Extinguishers having a gross weight greater than 40 Ibs 18 14 kg should be installed so that the top of the exting
9. ar 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 prevent 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 Fullness determined by weighing or hefting for self expelling type extinguishers Cartridge operated extinguishers and pump tanks 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 ee Se 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
10. auge 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 Inspect discharge lever for any dirt or corrosion which might impair freedom of movement Inspect carrying handle for proper installation If lever handle or rivets are damaged replace with proper Amerex part s Install new tamper seal if broken and record service data on the extinguisher inspection tag Remove nozzle or hose and horn assembly and visually inspect inside valve body Chemical in the valve body may indicate that the extinguisher has been partially discharged and should therefore be recharged Inspect nozzle or the hose amp horn assembly for damage replace as necessary Blow air through nozzle or hose and horn to insure passage is clear of foreign material 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 Install nozzle or hose and horn assembly Replace the extinguisher on the wall hanger or in the vehicle bracket making sure that it fits the bracket properly and the bracket is securely attached rep
11. htly lubricating with Visilox V 711 Do not lubricate valve stem seal Complete steps 3 through 14 of Recharge Procedure RECHARGE WARNING 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 minimum dew point of minus 70 F minus 57C Set the regulator to no more than 25 psi above the operating pressure 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 10 of the Complete Maintenance Six Year Teardown section Thoroughl
12. lace the bracket if necessary 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 10 11 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 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 Clean 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
13. ose amp Horn Asy 424 B424 140 08337 B424x 152 01178 441 447 B447 173 03753 61 B461 462 B461 140 06095 419 460 B460 B441 152 1 3 01304 B441X 157 03339 423 174 05174 415 177 03332 408 173 12603 692 216 il 13439 693 191 1 4 06978 Hose Gasket O Ring 24 5 00160 Ring Pin Stainless Steel 24 5A 00532 Chain Nylon for Ring Pin 24 6 01387 Lockwire Seal Yellow 500 Strap amp Hose Clip Asy Black 15747 Plastic 3 8 All 4 amp 5 Dia Cylinders 7 44778 Strap amp Hose Clip Asy Black 1 Plastic 1 2 All 7 Dia Cylinders 14871 Strap amp Hose Clip Asy Black Plastic 1 2 All 8 Dia Cylinders 8 07762 Lever amp Rivet All Models 1 8A 01563 Rivet Only for Lever 24 9 09020 Handle amp Rivets All Models 1 9A 01564 Rivets Only for Handle 2 Req d 24 10 03965 Gauge 195 PSI 6 11 05243 Valve Stem O Ring 24 42 06093 Valve Stem Assembly 6 Valve Stem Assembly Bulk Bag 96 13 00383 Spring 6 01696 D tube Retainer Asy 424 B424 01700 419 14 03754 461 B461 462 B462 1 02609 441 B441 447 B447 460 B460 01667 408 415 423 09583 692 693 15 12383 Protective Ring for Bottom of Cyl 7 1 12952 Protective Ring for Bottom of Cyl 7 1 ALL BRACKETS SEE BRACKET PAGE ALL FILL amp HYDROTEST ADAPTERS SEE ADAPTER PAGE ALL VALVE ASSEMBLIES INCLUDE VALVE BODY GAUGE LEVER amp HANDLE P N 05248 amp P N 0
14. pelled so care should be taken in the area being used for depressurizing Thoroughly clean all valve parts after depressurization and valve removal PROBLEM CORRECTIVE ACTION 1 Remove valve assembly remove and discard o ring clean collar and lube lightly Leak at collar o ring with Visilox V 711 Clean o ring groove on valve and install new collar o ring Lubricate with Visilox V 711 2 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 Leak through valve 3 Remove gauge clean threads and reinstall pear a using Teflon tape on the gauge threads 4 Remove defective gauge an install the Defective gauge proper Amerex pressure gauge using Teflon tape on the gauge threads 5 Contact Amerex if under warranty Leak in the cylinder 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 v A PARTS LIST for 1 6 Ib Dry Chemical Aluminum Valve Models Fixed Nozzle A B C403 416 425 409 A B416 A B459 A B409 417 A620 A
15. pressurizing line with a quick connect to the nitrogen charging adapter Depress the extinguisher operating lever and pressurize extinguisher with dry nitrogen to the proper operating pressure When the desired pressure has been reached release the lever Shut off nitrogen supply and remove the quick connect 10 11 12 13 14 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 nitrogen charging adapter Blow air or nitrogen into the interior of the valve assembly to remove any remaining leak detecting fluid Wipe exterior of extinguisher to remove any remaining residue Install nozzle or hose and horn assembly Install ring pin with ring facing the front of the extinguisher Install tamper seal Record recharge date and attach new recharge tag Weigh assembled extinguisher and confirm that the total weight is within the allowable tolerances indicated in the Maintenance section of the nameplate label TROUBLESHOOTING GUIDE WARNING Determine the source of a leak before the extinguisher is depressurized The extinguisher must be completely depressurized before any attempt is made to devalve it and correct a leakage problem To depressurize hold the extinguisher in an inverted position and slowly squeeze the discharge handle Some chemical remaining in the downtube will be ex
16. st you 4 Keeping the extinguisher upright squeeze the lever to discharge and sweep the chemical agent stream from side to side 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 material 5 When the fire is out stand by and watch for possible re ignition 6 Evacuate and ventilate the area immediately after extinguishing the fire The fumes and smoke from any fire may be hazardous and can be deadly CAUTION DISCHARGE TIME AND EFFECTIVE RANGE OF THE AGENT THROW VARIES ACCORDING TO MODEL SEE THE SPECIFICATION LITERATURE FOR YOUR EXTINGUISHER RECHARGE FIRE EXTINGUISHERS IMMEDIATELY AFTER ANY USE 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 RECHARGE 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 AMEREX ASSUMES NO LIABILITY FOR SERVICE MAINTENANCE OR RECHARGE OF FIRE EXTINGUISHERS BY PUBLISHING THIS MANUAL INSPECTING THE EXTINGUISHER This extinguisher should be inspected at regul
17. uisher is not more than 3 1 2 ft 1 07m above the floor All extinguishers should be in an accessible location and near an exit Never install the extinguisher in a location where a potential hazard would prevent easy access The operational temperature range for this extinguisher is 65 F to 120 F 54 C to 49 C or 40 F to 120 F 40 C to 49 C please see the nameplate on your extinguisher 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 that 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 over a period of time and make the extinguisher ineffective Never throw an extinguisher into a fire because rapid heat buildup could cause pressure expansion and exceed the limitations of the cylinder OPERATION NOTE Persons expected to use this extinguisher should be trained in initiating its operation and in the proper firefighting technique Familiarize all personnel with this information before an emergency occurs l Remove the extinguisher from wall hanger or bracket 2 Hold the extinguisher upright twist and pull the ring safety pin snapping the plastic lockwire seal 3 Starting back a minimum of 8 feet from the fire grasp the nozzle and aim at the base of the fire neare
18. y 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 valve stem spring and downtube assembly and replace parts if worn or damaged 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 in accordance with local regulations Inspect the 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 CAUTION Filling by eye alone could cause potentially dangerous overfilling always use a scale 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 Carefully center the downtube and install valve assembly hand tight to the cylinder the bottom of the valve body should touch the top of the cylinder collar Attach the nitrogen charging adapter to the valve assembly With the extinguisher properly secured in an upright position connect your nitrogen
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