Amerex 680 User guide

PN 05620 04/2020
PART
NUMBER TITLE DATE CREATED CREATED BY REV. CK’D
05620 MANUAL SERVICE OWNERS CLASS D 680/681 1991 HB B
THIS DRAWING IS THE EXCLUSIVE AND CONFIDENTIAL PROPERTY OF AMEREX
CORPORATION. IT SHALL NOT BE DUPLICATED, USED OR DISCLOSED TO OTHERS
REV DRAWING CHANGE BY ECN# DATE
BPUBLISHER FILE CREATED; REFRESHED LAYOUT DESIGN CT B002026 4/30/20
COVER SHEET
DO NOT PRINT THIS PAGE FOR ACTUAL MANUAL. INTERNAL USE ONLY.
#NOTES
1THIS COVERSHEET FOR INFORMATIONAL PURPOSES ONLY - DO NOT PRINT THIS PAGE IN MANUAL.
2DESCRIPTION: MANUAL OWNER’S SERVICE FOR MODEL 680, 681 WHEELED EXTINGUISHERS
3ACTUAL PRINTED MATERIAL TO CONSIST OF ATTACHED
4OVERALL SIZE OF PRINTED DOCUMENT PAGES: 8-1/2” X 11” ON 20 LB PAPER
5PRINTED MATERIAL TO MATCH ATTACHED IN SADDLE STITCHED BOOKLET FORM
6PRINT MATERIAL IS TO BE HOLE PUNCHED 3 EACH 1/4” HOLES DOWN LEFT SIDE FOR STD 3-RING BINDER
7CURENT REVISION DATE: 4/20

PN 05620 04/2020
All fire extinguishers shall be installed, inspected, and maintained in accordance with the National Fire
Protection Association standard titled “Portable Fire Extinguishers”, NFPA 10, or the National Fire Code of
Canada and the requirements of local authorities having jurisdiction.
When maintenance is indicated, it shall 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 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 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.
OWNER’S SERVICE MANUAL
INSTALLATION, OPERATING & SERVICING INSTRUCTIONS
MANUAL PN 05620
CLASS-D WHEELED EXTINGUISHERS
MODELS 680, 681
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. 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.
RECHARGE FIRE EXTINGUISHERS IMMEDIATELY AFTER ANY USE
AMEREX CORPORATION – P.O. BOX 81 – TRUSSVILLE, ALABAMA 35173-0081
Phone: [phone] Fax: [phone]
e-mail: [e-mail] Web Page: http://www.amerex-fire.com
REFERENCES IN THIS MAUNUAL:
NFPA 10 Portable Fire Extinguishers
JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ
CGA C-1 Methods for Pressure Testing Compressed Gas
Cylinders
CGA C-6 Standard for Visual Inspection of Steel
Compressed Gas Cylinders.
National Fire Code of Canada
AVAILABLE FROM:
National Fire Protection Association, 1 Batterymarch Park,
Quincy, MA 02169-7471
Compressed Gas Association, 14501 George Carter Way,
Chantilly, VA 20151-2923
Compressed Gas Association, 14501 George Carter Way,
Chantilly, VA 20151-2923
National Research Council Canada, 1200 Montreal Road,
Building M-58 Ottawa, ON K1A 0R6 Canada

PN 05620 04/2020
PREPARING YOUR NEW EXTINGUISHER FOR USE
WARNING: THIS FIRE EXTINGUISHER IS SHIPPED FROM THE FACTORY EMPTY. AFTER INITIAL
PREPARATIONS, CAREFULLY FOLLOW THE RECHARGING INSTRUCTIONS BEFORE PLACING
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.
5. Check the ARGON cylinder pressure. The gauge shall read approximately 2015 psi (13.9 mPa) at 70°F (21°C)
ambient temperature. See the “Troubleshooting Guide” for pressure-temperature allowances. The tamper seal shall
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 clips [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
CLASS0D FIRES INVOLVING MAGNESIUM, SODIUM, POTASSIUM, OR POTASSIUM ALLOYS
ONLY. THE MODEL 681 CLASS-D FIRE EXTINGUISHER HAS BEEN TESTED AND APPROVED
FOR CLASS-D FIRES INVOLVING LITHIUM ONLY. 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 temperature 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 EXPECTED TO USE THIS EXTINGUISHER SHALL BE TRAINED INITIATING
ITS OPERATION AND IN THE PROPER FIRE-FIGHTING TECHNIQUE. FAMILIARIZE ALL
PERSONNEL WITH THIS INFORMATION BEFORE AN EMERGENCY OCCURS.
1. Move the extinguisher to within approximately 25 feet of the fire site. REMOVE PULL PIN. Pull “T” handle
to OPEN ARGON VALVE. This will pressurize the extinguisher.
2. 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.
3. 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.
4. REAPPLY AGENT TO HOT SPOTS until the fire is fully extinguished.

PN 05620 04/2020
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) – 4 to 6 feet
Hose Length—25 feet
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
careful 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 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)
A “quick check” shall be made of the extinguisher for the following:
1. Located in designated place.
2. No obstructions to access or visibility.
3. Operating instructions on nameplate and facing outward.
4. Tamper seal not broken or missing.
5. Determine fullness by weighing on a scale with adequate capacity.
6. Examine for obvious physical damage, corrosion, leakage, or clogged nozzle.
7. Pressure gauge (Argon cylinder) reading in the operable area.
MAINTENANCE
At least once a year (or more frequently if indicated by an inspection), MAINTENANCE shall be performed.
MAINTENANCE is a “thorough check” of the extinguisher. It is 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

PN 05620 04/2020
NOTE: NFPA 10 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. PN: 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: 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 damage is found, hydrostatically test in accordance with instructions in CGA Pamphlet C-1 and
C-6 and NFPA 10.
2. Inspect the extinguisher for damaged, missing, or substitute parts. A careful inspection shall be made of
the safety relief to make sure that it has not ruptured, corroded, or been tampered with. Only factory-
replacement parts are approved for use on Amerex fire extinguishers.
3. 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).
4. 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.
5. Check the gauge on the Argon cylinder. If the pressure is below 1700 psi (11.7 mPa) repressurize the
cylinder to 2015 psi (13.9 mPa) or replace it. 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 “Troubleshooting Guide”. Check the tamper seal on the Argon valve and replace if necessary.
6. Inspect the wheels to insure they rotate freely. Lubricate as required.
WARNING: THE FOLLOWING STEPS SHALL ONLY BE PERFORMED BY PROFESSIONALLY
TRAINED AND QUALIFIED SERVICE PERSONNEL THOROUGHLY FAMILIAR WITH
INDUSTRY SERVICE PROCEDURES AND SAFETY PRECAUTIONS AND HAVING THE
NECESSARY EQUIPMENT TO PERFORM THE SERVICE PROPERLY. ALL
EXTINGUISHER AND SERVICE EQUIPMENT COMPONENTS, FITTINGS, AND
ADAPTERS MUST BE IN GOOD CONDITION AND PROPERLY CONNECTED.
7. 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 (PN: 01740) to the low-pressure outlet port of the regulator.
b) Connect the service kit HOSE ASSEMBLY (PN: 01410) and FLOW CHAMBER (PN: 01250) to the
regulator low-pressure port adapter.
8. 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 & 681 regulator listed below.
Regulator Type Victor
Static Dead Set Pressure 120 ± 10 PSI
Minimum Flow Pressure 110 PSI Minimum

PN 05620 04/2020
b) Use a regulated Argon pressure source, set to the extinguisher operating pressure (110 PSI) and
briefly pressurize the agent cylinder (the siphon tube shall 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.
c) 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.
16. Disconnect the service kit quick connect adapter from the low-pressure port of the regulator and reinstall
the regulator securely to the agent cylinder.
17. Disconnect the high-pressure hose from the Argon cylinder valve. Securely install the service kit ARGON/
NITROGEN CYLINDER PRESSURE CHECK GAUGE ASSEMBLY (PN: 01300) to the Argon cylinder
valve outlet and verify the indicated cylinder gauge pressure. Argon pressure shall 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-
OPENING TRIP-LEVER RELEASE, THE SAFETY VENT PLUG (PN: 01560) MUST BE
INSTALLED TO PROTECT SERVICE PERSONNEL FROM A HIGH VELOCITY
DISCHARGE IN CASE THE LEVER IS ACCIDENTALLY OPENED.
18. Install a new Amerex PN: 07411 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 ¼ turn after contacting the hose gasket.
19. 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.
20. Remove the safety vent plug from the Argon cylinder. Reconnect 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 extinguisher is in its
proper location.
RECHARGE
RECHARGING 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 IN THE SYSTEM THAT
PREVENTS ARGON PRESSURE FROM ESCAPING FROM THE AGENT CYLINDER
WHEN THE ARGON SUPPLY HOSE IS DISCONNECTED. THE AGENT CYLINDER MAY
BE PRESSURIZED EVEN THOUGH NO PRESSURE ESCAPES FROM THE ARGON
CYLINDER HIGH-PRESSURE HOSE CONNECTION.
1. 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.
2. 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.

PN 05620 04/2020
WARNING: IF THE PRESSURE READING EXCEEDS THE GIVEN PARAMETERS, QUICKLY CLOSE
THE ARGON CYLINDER “T” HANDLE OR HANDWHEEL VALVE, AND VENT THE
PRESSURE BY OPENING THE FLOW CHAMBER BALL VALVE. REGULATORS
CANNOT BE FIELD ADJUSTED. THEY MUST BE REPLACED IF FOUND TO BE OUT OF
TOLERANCE.
9. Observe the proper regulator static dead-set pressure for a minimum of one minute, then fully 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: ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY. ANY PRESSURE IN THE
AGENT CYLINDER WILL CAUSE THE EXTINGUISHER TO DISCHARGE. BE PREPARED
FOR A POSSIBLE DISCHARGE AND NOZZLE RECOIL. ANY EVIDENCE OF AGENT IN
THE NOZZLE INDICATES THAT THE UNIT MAY HAVE BEEN USED AND THE USE NOT
REPORTED.
10. Disconnect the discharge hose from the agent cylinder. Check the couplings, hose, and hose gaskets for
damage or deterioration – replace as necessary.
11. 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 shutoff 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 ensure 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.
12. 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 V-711 and reinstall.
13. Examine the condition of the chemical agent for proper type and condition. Replace chemical that is
contaminated, 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).
14. Place the service kit VENT SPACER (PN: 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 Fill 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 ONTO THE VENT SPACER AND AGENT CYLINDER TO ALLOW
PRESSURE TO SLOWLY VENT AFTER PERFORMING THE SIPHON TUBE CLEARING
AND GAS TUBE INTEGRITY CHECKS.
15. To perform a siphon tube clearing and gas tube integrity check:
a) Remove the service kit AGENT HOSE ADAPTER (PN: 01455) from the discharge hose assembly,
and install it securely onto the agent cylinder siphon tube outlet.

PN 05620 04/2020
PROBLEM CORRECTIVE ACTION
1. Argon cylinder reads low or high 1. Temperature may have affected the pressure reading.
Temp. F 35° 70° 120°
Temp. C 2° 21° 49°
Recommended Pressure
psi 1880 2015 2200
mPa 13.0 13.9 15.2
Minimum Pressure
psi 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. Tamper seal
is intact. Pressure in agent and the Argon cylinders.
2. Valve seat has leaked and has pressurized the agent cylinder.
Follow RECHARGE PROCEDURE for restoring the extinguisher to
service.
3. Argon pressure is too low. Valve is closed. Tamper seal
is intact. No pressure observed in cylinder.
3. Leakage in the Argon valve at other than the valve seat.
Replace with a properly charged Argon Cylinder.
4. Unable to move the agent cylinder cap. 4. Agent cylinder may be pressurized. Make no further
attempt to remove the cap until this is checked.
5. Argon supply hose cut, cracked, or abraded. 5. Replace hose assembly with Amerex PN 06814.
3. Inspect the cylinder interior following CGA Visual Inspection Standard, Pamphlet C-6.
4. Perform MAINTENANCE-SERVICE PROCEDURES 1 through 3, 6 and 7. All parts shall be inspected,
clean, and replaced if necessary.
5. Detach hose from the Argon cylinder, install the shipping cap, unscrew the wing nuts, and remove the
Argon cylinder from the extinguisher
6. Fill the agent cylinder with the proper amount of Amerex Class-D Powder (Model 680 – capacity 150 lbs.,
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 MIX TYPES OF
AGENTS.
7. Install an Amerex PN 10904 110 cu. ft. ARGON cylinder (pressurized to 2015 psi), remove the shipping
cap, place on the extinguisher, and attach the Argon hose. The pull pin and tamper seal [“T” handle valve]
or wire seal [handwheel valve] must be in place.
8. Reattach the hose to the extinguisher (tighten hand tight plus a ¼ 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.
9. 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 A LEAKING ARGON VALVE SEAT MAY HAVE PRESSURIZED THE AGENT CONTAIN-
ER. REFER TO THE PREVIOUS PAGE IN THE RECHARGE PROCEDURE FOR PROPER
METHOD OF DEPRESSURIZATION.
FOR REPLACEMENT PARTS SEE THE AMEREX PORTABLE AND WHEELED
PARTS BOOK PN 27277 AVAILABLE AT http://www.amerex-fire.com UNDER
MANUALS OF THE RESOURCE SELECTION.