Amerex 05616 - Manual (Page 5)

4
MAINTENANCE – SERVICE PROCEDURE
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 any damage is found, hydrostatically test to factory test
pressure 720 psi (4964 kPa), using the proof pressure method, in accordance with instructions
in C-6 and NFPA 10. See proper method of depressurizing and reclaiming chemical in
Recharge procedures.
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. 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.
4. Check the date of manufacture printed on the extinguisher label (nameplate) or inside the
bottom lip of the cylinder. The agent cylinder must be hydrostatically tested every 12 years to
the test pressure indicated on the nameplate [720 psi (4964 kPa)].
5. Visually inspect the pressure gauge:
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.
6. Check ring pin for freedom of movement. Replace if bent or if removal appears difficult.
7. 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.
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 should 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.