Item Brochure

PN 05616 04/2020
8. Remove 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 shall therefore be recharged. Inspect the
hose and horn assembly for damage, and replace if necessary. Blow air through the hose and horn to
insure passage is clear of foreign material.
9. 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.
10. Install hose and horn assembly.
11. Record service data on the extinguisher inspection tag.
12. If the extinguisher has been moved to perform service, replace it on the wall hanger or in the vehicle
bracket making sure it fits the bracket properly. Replace 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.
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 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.
2. 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.
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 (720 psi [4964
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 pull 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. Inspect the discharge lever for any dirt of corrosion which might impair freedom of movement. Inspect
carrying handle for proper installation. If lever, handle, or rivets are damaged replace with factory-
replacement parts.
NOTE: A "closed recovery system" is designed to prevent loss of the chemical "fines". Loss of
the "fines" could result in reduced extinguisher efficiency.
NOTE: When cleaning, avoid use of solvents around the pressure gauge. They could seriously
damage the plastic gauge face.