Amerex 05604 - Manual (Page 3)

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Maintenance [NFPA 10] is a thorough examination of the fire 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
1. 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 of these conditions are found and you doubt the
integrity of the cylinder, hydrostatically test to factory test pressure, using the proof pressure
method in accordance with CGA C-1 and C-6 and NFPA 10. See proper method of
depressurizing and reclaiming Halon 1211 in SIX-YEAR MAINTENANCE/RECHARGE
PROCEDURE.
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. Remove and check ring (safety) pin for freedom of movement. Replacement if bent or if
removal appears difficult.
4. Check the date of manufacture printed on the extinguisher label (nameplate). All stored
pressure Halon 1211 extinguishers must be hydrostatically (proof pressure) tested every 12
years.
5. Visually inspect the pressure gauge:
a. If bent, damaged or improper gauge, depressurize and replace.
b. If pressure is low or high and temperature/pressure relationship has been ruled out:
1. If pressure is low, check for leaks.
2. If over pressurized (overcharged), depressurize the extinguisher and follow recharge
instructions.
6. 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).
7. Check weight of extinguisher and compare to proper weight specified on extinguisher
nameplate. If discrepancy is noted, remove nozzle or hose assembly and follow Complete
Maintenance/Recharge Procedure for recharging.
8. Remove nozzle or hose and horn assembly. Inspect nozzle, hose gasket (o-ring), hose and
horn assembly for damage
– replace as necessary. Blow air through hose and horn or nozzle
to insure passage is clear of foreign material and replace component parts as necessary.
9. Inspect the valve assembly for corrosion or damage to hose thread connection. Replace valve
assembly or component parts as necessary following the proper recovery and recharge
procedures. If valve removal is necessary, complete all steps in the Complete
Maintenance/Recharge Procedure.
10. Install nozzle or hose and horn assembly.
11. Install new tamper seal if broken and record service data on the extinguisher inspection tag.
12. Replace the extinguisher on the wall hanger making sure that it fits the bracket properly –
replace the bracket if necessary.