OWNERS SERVICE MANUAL NO. 05620
Contents
1. 13 14 Disconnect the regulator from the agent cylinder Visually examine the regulator and high pressure hose for signs of damage corrosion or deterioration To perform the regulator static pressure dead set and minimum pressure flow rate checks a Connect the proper service kit ADAPTER P N 01740 to the low pressure outlet port of the regulator b Connect the service kit HOSE ASSEMBLY P N 01410 and FLOW CHAMBER P N 01250 to the regulator low pressure port adapter Make sure all service kit connections are secure and that the kit flow chamber is CLOSED Check the ARGON cylinder pressure to ensure that it is within the acceptable operating range Hold the kit flow chamber in one hand and slowly open the Argon cylinder with either T handle operating lever or by turning the handwheel if so equipped Observe flow chamber pressure reading to see if it is within the recommended static dead set pressure parameters for the Models 680 amp 681 regulator listed below Regulator Type Static Dead Set Pressure Minimum Flow Pressure Victor 120 10PSI 110 PSI minimum WARNING IF THE PRESSURE READING EXCEEDS THE GIVEN PARAMETERS QUICKLY CLOSE THE ARGON CYLINDER T HANDLE OR HANDV HEEL VALVE ANDVENT THE PRESSURE BY OPENING THE FLOW CHAMBER BALL VALVE REGULATORS CANNOT BE FIELDAD USTED THEY MJST BE REPLACEDIF FOUNDTO BE OUT OF TOLERANCE Observe the proper regulator static dead set pressure for a minimum of one minute then ful2. OWNERS SERVICE MANUAL NO 05620 INSTALLATION OPERATING AND SERVICING INSTRUCTIONS for MODEL 680 150LB CLASS D Sodium Chloride amp MODEL 681 250 LB CLASS D Copper WHEELED FIRE EXTINGUISHERS WITH DISCHARGE EXTENSION WAND 110 CU FT ARGON CYLINDER OPERATED 36 IN RUBBER TREADED WHEELS 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 Dis tributor Amerex Corp 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 which are manufactured to exacting tolerances All parts meet precise specifications and are subjected to multiple in house inspections and tests for acceptability There are substitute parts available which are incorrectly labeled as
3. A LEAKING ARGON VALVE SEAT MAY HAVE PRESSURIZED THE AGENT CONTAINER REFER TOTHE PREVIOUS PAGE INTHE RECHARGE PROCE DURE FOR PROPER METHOD OF DEPRESSURIZATION PROBLEM CORRECTIVE ACTION 1 Argon cylinder gauge reads low or high 1 Temperature may have affected the pressure reading Temp F 35 70 120 Temp C 2 21 49 Recommended Pressure psig 1880 2015 2200 mPa 13 0 13 9 15 2 Minimum Pressure psig 1590 1700 1900 mPa 11 0 11 7 13 1 No corrective action is required if the pressure is within parameters stated above 2 Argon pressure is too low Valve is closed 2 Valve seat has leaked and has pressurized the agent cylinder Tamper seal is intact Pressure in agent and Follow RECHARGE PROCEDURE for restoring the the Argon cylinders extinguisher to service 3 Argon pressure is too low Valve is closed 3 Leakage in the Argon valve at other than the valve seat Tamper seal is intact No pressure observed Replace with a properly charged Argon cylinder in the agent cylinder 4 Unable to remove the agent cylinder cap 4 Agent cylinder may be pressurized Make no further attempt to remove the cap until this is checked See the RECHARGE PROCEDURE for proper depressurization method 5 Argon supply hose cut cracked or abraded 5 Replace hose assembly with Amerex P N 06814 PARTS LIST for Qu
4. 1 HOSE 25 ft WAND INSTALLATION 1 Connect hose coupling to outlet on the extin 2 The second loop is a REVERSE loop 3 The next loop is a regular hose in front guisher Lay hose straight on ground to its full 50 Notice that the hose passes behind the loop on loop Adjust the loops so that they are ap ft length this reverse loop proximately the same size and then attach Start first regular loop clockwise by placing over If instructions are followed the hose will the hose to the shutoff valve with either the the top and between side brackets uncoil without kinks extension wand or nozzle installed
5. EN ARGON VALVE This will pressurize the extinguisher Remove nozzle from the mount and with the nozzle lever in the CLOSED position PULL HOSE FROM RACK AND START BACK 15 FEET from the fire Note When using the wand applicator START BACK 6 FEET FROM FIRE OPEN NOZZLE SHUT OFF slowly by pulling handle fully towards you hold the nozzle firmly and be prepared for a discharge recoil COVER ALL BURNING METAL WITH POWDER REAPPLY AGENT TO HOT SPOTS until the fire is fully extinguished DISCHARGE TIME APPROXIMATE Model 680 80 Seconds Model 681 120 Seconds EFFECTIVE RANGE OF THE AGENT THROW With Nozzle both units 20 to 30 feet With Applicator both units 4to 6 feet HOSE LENGTH 25 FEET s RECHARGE EXTINGUISHER IMMEDIATELY AFTER ANY USE SHUTDOWN 1 After making sure that the fire has been completely extinguished push the nozzle lever forward to the CLOSED position 2 Close the Argon cylinder valve push T handle to closed position 3 Tip extinguisher over to rest on wheels and handle then slowly open the nozzle lever again to clear the hose of chemical agent and pressure be prepared for recoil and discharge of agent WARNING MAKE SURE THAT ALL PRESSURE HAS ESCAPED BEFORE FURTHER DISASSEMBLY 4 Stand the extinguisher upright after complete depressurization Note Argon pressure in the agent cylinder cannot escape through a disconnected pressurizing hose due to a check valve in the system Always be carefu
6. MAINTENANCE is a thorough check of the extinguisher Itis intended to give maximum assurance that an extinguisher will operate effectively and safely It includes a thorough examination and any necessary repair or replacement It will normally reveal the need for hydrostatic testing NFPA 10 4 3 2 spells out wheeled extinguisher maintenance procedures Para 4 4 1 3 requires that REGULATORS on wheeled extinguishers be checked annually to meet manufacturer s dead set and minimum flow recommendations The Getz Mfg P N 52576 Wheeled Extinguisher Service Kit is available so that you can perform these required functions Getz part numbers from the kit are referenced in this manual ANNUAL MAINTENANCE PROCEDURES WARNING BEFORE SERVICING BE SURE THE EXTINGUISHER AGENT CYLINDER IS NOT PRESSURIZED Note 1 6 This procedure will be 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 name plate is securely fastened and legible Inspect the cylinders for corrosion abrasion dents or weld damage If damage is found hydrostatically test in accordance with instructions in CGA Pamphlet C 1 and C 6 and NFPA Pamphlet 10 Inspect the extinguisher for damaged missing or substitute parts A careful inspection should be made of the safety relief to make sure that it has not ruptured corrode
7. OF FIRE EXTINGUISH ERS BY PUBLISHING THIS MANUAL PREPARING YOUR NEW EXTINGUISHER FOR USE WARNING THIS FIRE EXTINGUISHER IS SHIPPED FROMTHE FACTORY EMPTY AFTER INTIAL PREPARATIONS CAREFULLY FOLLOWTHE RECHARGING INSTRUCTIONS BEFORE REPLACING IT INTO SERVICE 1 Remove all wrappings straps and pallet retaining bolts 2 Examine the extinguisher for shipping damage Check to make sure that you have received the Class D powder charge containers and Extension Wand which are packaged with the extinguisher 3 Fill the extinguisher by carefully following the RECHARGE instructions 4 Remove the ARGON cylinder protective shipping cap Save the cap as it must be installed whenever a charged ARGON cylinder is transported ay Check the ARGON cylinder pressure The gauge should read approximately 2015 psig 13 9 mPa at 70 F 21 C ambient temperature See the Troubleshooting Guide for pressure temperature allowances The lead wire seal should be intact 6 Connect the Argon supply hose firmly to the Argon cylinder valve Make sure that there are no kinks in this hose 7 Disconnect the discharge hose assembly from the agent cylinder Make sure that the hose and nozzle and Extension Wand are unobstructed Reconnect the discharge hose to the agent cylinder and with the shut off valve in the closed forward position properly coil the hose onto the storage rack Place the shut off nozzle or Extension Wand if used into the retaining c
8. OW PRESSURE TO SLOWLY VENT AFTER PER FORMING THE SIPHON TUBE CLEARING AND GAS TUBE INTEGRITY CHECKS To perform a siphon tube clearing and gas tube integrity check a Remove the service kit AGENT HOSE ADAPTER P N 01455 from the discharge hose assembly and install it securely onto the agent cylinder siphon tube outlet b Use a regulated Argon pressure source set to the extinguisher operating pressure 110 PSI and briefly pressurize the agent cylinder the siphon tube should clear within a couple of seconds and the agent cylinder pressure slowly vent from the fill cap thread vent Pressure and or dry powder leaking from the gas inlet port where the regulator was installed will indicate a defective gas tube This will require emptying the agent cylinder and replacing the gas tube Close the Argon pressure source and allow all pressure to slowly vent from the thread vent port on the fill cap d AFTER ALL PRESSURE HAS BEEN RELIEVED SLOWLY OPEN THE FILL CAP AND REMOVE THE TEST KIT VENT SPACER e Re examine the Class D dry powder agent to determine if any obstructions have been cleared from the siphon tube and have risen to the surface f Clean the fill cap and agent cylinder thread surfaces Securely install the fill cap gasket and fill cap Disconnect the service kit quick connect adapter from the low pressure port of the regulator and reinstall the regulator securely to the agent cylinder Disconnect the high pressure hose from th
9. U L component parts some are advertised as Amerex type None of these meet U L requirements and all of them void the Amerex extinguisher warranty and U L listing DO NOT SUBSTITUTE REFERENCES IN THIS MANUAL AVAILABLE FROM NFPA 10 PORTABLE FIRE EXTINGUISHERS National Fire Protection Assoc Inc Batterymarch Park Quincy MA 02269 CGA C 1 METHODS FOR HYDROSTATIC Compressed Gas Association Inc TESTING OF COMPRESSED GAS 1235 Jefferson Davis Highway CYLINDERS Suite 501 CGA C 6 STANDARD FOR VISUAL INSPECTION Arlington VA 22202 OF COMPRESSED GAS CYLINDERS AMEREX CORP P O BOX 81 TRUSSVILLE AL 35173 0081 U S A PHONE 205 655 3271 FAX 205 655 5112 E Mail sales amerex fire com Web Page http www amerex fire com Printed in U S A MM 05620 Rev 8 99 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 CARE FULLY OBSERVED FAILURE TO HEED THESE INSTRUCTIONS COULD RESULT IN SERIOUS INJURY AMEREX ASSUMES NO LIABILITY FOR SERVICE MAINTENANCE OR RECHARGE
10. d if necessary Detach hose from the Argon cylinder install the shipping cap unscrew the wing nuts and remove the Argon cylinder from the extinguisher Fill the agent cylinder with the proper amount of Amerex Class D Powder Model 680 capacity 150 Ibs Super D Sodium Chloride or Model 681 capacity 250 lbs Copper Lubricate the fill cap gasket Install the fill cap and tighten securely WARNING REPLACE ANY CHEMICAL THAT IS CONTAMINATED OR CAKED DO NOT OVERFILL THE EXTINGUISHER THIS COULD CAUSE MALFUNCTION NEVER MX TYPES OF AGENTS Install an Amerex P N 10904 110 cu ft ARGON cylinder pressurized to 2015 psi remove the shipping cap place on the extinguisher and attach the Argon hose The Ring safety Pin and tamper indicator lockwire seal T handle valve or lead wire seal handwheel valve must be in place Reattach the hose to the extinguisher tighten hand tight plus a 1 4 turn Properly coil the hose onto the storage rack Reattach the shutoff nozzle and or Extension Wand firmly to the hose and store it in the mount with the shutoff lever in the CLOSED forward position Record the service date on the inspection tag and place the extinguisher in its proper location TROUBLESHOOTING GUIDE WARNING BEFORE ATTEMPTING TO CORRECT ANY LEAKAGE PROBLEM BE SURE THAT THE AGENT CYLINDER IS COMPLETELY DEPRESSURIZED ALWAYS USE CAUTION WHEN OPENING THE SHUTOFF NOZZLE AGENT CLINDER CAP OR ANY OTHER CONNECTION AS
11. d or been tampered with Only factory replacement parts are approved for use on Amerex fire extinguishers Check the date of manufacture on the extinguisher nameplate or on the agent cylinder dome The agent cylinder assembly and discharge hose assembly must be hydrostatically tested every 12 years Test pressure for the agent cylinder is 500 psi 3448 kPa Test pressure for the hose assembly is 300 psi 0268 kPa Check the hydrostatic test date on the crown of the Argon cylinder The Argon cylinder must be retested in accordance with D O T regulations every 5 years Check the gauge on the Argon cylinder If the pressure is below 1700 psig 11 7 mPa repressurize the cylinder to 2015 psig 13 9 mPa or replace it A low pressure may indicate leakage Check for leaks A low gauge reading may also result from low temperature See the temperature pressure relationship chart in the Trouble shooting Guide Check the tamper indicator lockwire seal on the Argon valve and replace if necessary Inspect the wheels to insure they rotate freely Lubricate as required WARNING THE FOLLONNG STEPS SHOULDONLY BE PERFORIVEDBY PROFESSIONALLY TRAINED AND QUALIFIED SERVICE PERSONNEL THOROUGHLY FAMILIAR WITHINDUSTRY SERVICE PROCEDURES AND SAFETY PRECAUTIONS AND HAMING THE NECESSARY EQUIPIVENT TO PERFORMTHE SERVICE PROPERLY ALLEXTINGUSHERANDSERMCE EQUIPMENT COMPONENTS FITTINGS ANDADAPTERS MUST BE INGOODCOND TIONANDPROPERLY CONNECTED 10 11 12
12. e Argon cylinder valve Securely install the service kit ARGON NITROGEN CYLINDER PRESSURE CHECK GAUGE ASSEMBLY P N 01300 to the Argon cylinder valve outlet and verify the indicated cylinder gauge pressure Argon pressure should conform to the temperature correction chart provided in the TROUBLE SHOOTING section of this manual Close the Argon cylinder valve and disconnect the Pressure Check Gauge Assembly WARNING IF THE ARGON CYLINDER VALVE HAS A T HANDLE QUICK OPENING OR QUICK OPEN ING TRIP LEVER RELEASE THE SAFETY VENT PLUG P N 01560 MUST BE INSTALLED TO PROTECT SERVICE PERSONNEL FROM A HIGH VELOCITY DISCHARGE IN CASE THE LEVER IS ACCIDENTALLY OPENED Install a new Amerex P N 7411 Moisture Seal per instructions in the package Securely connect the discharge hose to the extinguisher When assembling the hose to the agent cylinder or nozzle to the hose tighten the coupling 1 4 turn after contacting the hose gasket Coil the hose onto the extinguisher hose rack using the reverse loop procedure see instructions later in this manual Install the shut off nozzle and or Extension Wand with the lever in the CLOSED forward position on the mount Remove the safety vent plug from the Argon cylinder Re connect the high pressure hose securely to the Argon cylinder valve Wipe the extinguisher clean Record the service data on the inspection tag according to NFPA 10 requirements and attach to the extinguisher Return the extinguishe
13. ick Release 150 250 LB WHEELED CLASS D EA IPATT a Argon Valve DRY POWDER Extinguishers with NO NO DESCRIPTION PKG 6A 36 In Steel Wheels w Rubber Treads 1 6993 Cap Forged Brass Agent Cylinder 1 6B 110 CU FT Argon Cylinder 1A 12576 Cap Forged Brass Agent Cylinder with 1 Pressure Indicator Models 680 150 LB Super D Sodium Chloride 2 28 2 Gasket Gap l 681 250 LB Copper 3 1990 Bumper Rubber 12 ep 4 10915 Argon Pressure Regulator 1 6C g 6E 5 4195 Lead Wire Seal for Argon Valve 12 6 2233 Argon Cylinder Valve Hand Wheel with 1 Gauge _ P 7 6A 12467 cae Valve Quick Release with 1 1 5 GZ 6B 6373 Valve Lever T Handle with Roll Pin and 1 d SS 18 Knobs 6c 10213 Gauge 3000 PSI 1 16 OS 6D 9897 Valve Stem Ass y 6 6E 0501 Spring 6 7 10904 Argon Cylinder 110 cu ft charged 1 Including Valve Gauge and Protective Cap 8 2234 Pressurizing Hose Ass y 1 9 10906 Retaining Strap Top with Hose Hanger 1 Argon Cylinder 9A 11020 Retaining Strap Bottom Argon Cylinder 1 19 10 11970 Bolt Washer and Wing Nut 1 11 10910 Pictogram 680 amp 681 1 12 10909 Nameplate Mylar Label Non F M 680 1 10911 681 13 10917 Wheel Ass y 36 X 2 1 2 with Rubber 1 Tread 14 10903 Hub Cap 36 Wheels 1 15 7411 Moisture Seal 1 16 3877 Gasket Hose Nozzle 6 17 6279 Ball Valve Ass y 1 18 6467 Nozzle Tip 312 1 19 10913 Hose Ass y 3 4 x 25 Ft 1 20 20 11181 Extension Wand Ass y
14. l when removing the fill cap 5 Coil the extinguisher hose onto the storage rack and position the nozzle and or Extension Wand onto the mount in preparation for transport to the recharge location WARNING THE SHIPPING CAP MUST BE INSTALLED ON THE ARGON CYLINDER PRIOR TO TRANSPORT TO THE RECHARGE LOCATION INSPECTING THE EXTINGUISHER INSPECTION NFPA 10 4 2 1 is a quick check that an extinguisher is available and will operate It is intended to give reasonable assurance that the extinguisher is fully charged and operable This is done by seeing that it is in its designed place that it has not bee actuated or tampered with and that there is no obvious physical damage or condition to prevent operation PERIODIC INSPECTION PROCEDURES Monthly or more often if circumstances dictate NFPA 10 4 3 2 A quick check should be made of the extinguisher for the following SIO OT e OO Located in designated place No obstructions to access or visibility Operating instructions on nameplate and facing outward Seals and tamper indicators not broken or missing Determine fullness by weighing on a scale with adequate capacity Examine for obvious physical damage corrosion leakage or clogged nozzle Pressure gauge Argon cylinder reading in the operable area MAINTENANCE MAINTENANCE NFPA 10 4 4 1 amp 4 4 2 At least once a year or more frequently if indicated by an inspection MAINTENANCE should be performed
15. lips see hose coiling last page 8 Record the date the extinguisher is being placed into service on the inspection tag and attach it to the unit 9 Remove the CAUTION NOT CHARGED tag INSTALLATION WARNING THE MODEL 680 CLASS D FIRE EXTINGUISHER HAS BEEN TESTED AND APPROVED FOR CLASS D FIRES INVOLVING MAGNESIUM SODIUM POTASSIUMOR POTASSIUMALLOYS ONLY THE MODEL 681 CLASS D FIRE EXTINGUISHER HAS BEEN TESTED AND APPROVED FOR CLASS D FIRES INVOLVING LITHUMONLY DO NOT USE EITHER EXTINGUISHER ON CLASS A B OR C FIRES Do not place this extinguisher close to a potential fire hazard Amerex recommends location at a 50 foot minimum distance from the hazard with an unobstructed access Avoid placing it in an extremely hot or cold place The tempera ture range for this extinguisher is 40 to 120 F 40 to 49 C Keep the extinguisher clean and free from dirt ice chemicals and other 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 CAUTION PERSONS EXPECTEDTO USE THIS EXTINGUISHER SHOULD BE TRAINED IN INITIATING ITS OPERATION AND INTHE PROPER FIRE FIGHTING TECHNIQUE FAMILIARIZE ALL PERSONNEL WITH THIS INFORMA TION BEFORE AN EMERGENCY OCCURS Move the extinguisher to within approximately 25 feet of the fire site REMOVE RING SAFETY PIN Pull T handle to OP
16. ly open the flow chamber valve for 1 2 seconds Observe the pressure reading to ensure that the flow pressure does not drop below the minimum specified Close the Argon cylinder valve after the test and vent the flow chamber pressure by opening the flow chamber valve Note Prior to performing the minimum flow check make sure that the nitrogen cylinder valve T handle or handwheel is FULLY OPEN so that it does not restrict or alter the flow readings WARNING ALVAYS OPENTHE SHUTOFF NOZZLE HANDLE SLOWLY ANY PRESSURE INTHE AGENT CYLINDER WILL CAUSE THE EXTINGUISHER TO DISCHARGE BE PREPARED FOR A POSSIBLE DISCHARGE AND NOZZLE RECOIL ANY EVIDENCE OF AGENT INTHE NOZZLE INDICATES THAT THE UNIT MAY HAVE BEEN USED AND THE USE NOT REPORTED Disconnect the discharge hose from the agent cylinder Check the couplings hose and hose gaskets for dam age or deterioration replace as necessary To perform an operational integrity check on the discharge hose and nozzle combination a Connect the test kit hose adapter to the female end of the discharge hose b Close the discharge nozzle shut off lever and properly secure it c Connect a properly regulated and verified nitrogen pressure source set to the extinguisher operating pressure 110 130 psi to the test kit hose adapter d Slowly pressurize the discharge hose nozzle assembly to the extinguisher operating pressure and check for leaks or distortion e Operate the nozzle lever to ens
17. r is in its proper location RECHARGE RECHARGING NFPA 10 4 2 3 is the replacement of the extinguishing agent and also includes the expellant for this type of extinguisher RECHARGE PROCEDURE WARNING BEFORE ATTEMPTING TO RECHARGE BE SURE THIS EXTINGUISHER IS COMPLETELY DEPRESSURIZED THERE IS A CHECK VALVE INTHE SYSTEMWHICH PREVENTS ARGON PRESSURE FROMESCAPING FROMTHE AGENT CYLINDER WHEN THE ARGON SUPPLY HOSE IS DISCONNECTED THE AGENT CYLIN DER MAY BE PRESSURIZED EVENTHOUGH NO PRESSURE ESCAPES FROMTHE ARGON CYLINDER HIGH PRESSURE HOSE CONNECTION TO DEPRESSURIZE a Close the Argon cylinder valve b Carefully tip extinguisher over until it rests on both wheels and handle in this position much of the agent will remain in the cylinder c Open the nozzle lever slowly to discharge all remaining agent and pressure be prepared for a nozzle recoil d Insure that all pressure has escaped before further disassembly e Return extinguisher to the upright position after complete depressurization Carefully remove the fill cap Detach discharge hose from the agent cylinder and the nozzle assembly from the hose Blow out any chemical agent remaining in the hose Clean hose and container fittings and gaskets Replace gaskets as necessary Inspect the cylinder interior following CGA Visual Inspection Standard Pamphlet C 6 Perform MAINTENANCE SERVICE PROCEDURES 1 through 3 6 and 7 All parts should be inspected clean and replace
18. ure proper operation and to clear the hose of any obstructions if hose is obstructed refer to the TROUBLE SHOOTING section of this manual f Close the nitrogen pressure source and relieve remaining pressure by slowly and fully opening the nozzle lever Remove the agent cylinder cap and examine it closely for signs of damage cracks or thread wear Clean the agent cylinder fill cap threads and thread vent port on the cap with a stiff bristle nylon brush Remove the fill cap gasket and check for wear cracks or tears replace if necessary Lightly lubricate the gasket with Visilox 711 and reinstall Examine the condition of the chemical agent for proper type and condition Replace chemical that is contami nated caked or different than the type indicated on the nameplate label Do not trust to the height of the chemical when determining agent fill Dry powder will settle and the only true indication of agent fill is to weigh the extinguisher and compare with the weight indicated on the nameplate label Place the service kit VENT SPACER P N 01530 on top of the agent cylinder fill opening collar Check again to see that the fill cap thread vent is clean and that the agent ill cap gasket is in place Install the agent fill cap securely over the vent spacer CAUTION STEP 15 THE AGENT CYLINDER CAP THREADS MUST BE CLEAR AND THE CAP SECURELY INSTALLED 15 16 17 18 19 20 ONTO THE VENT SPACER ANDAGENT CYLINDER TO ALL
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