Amerex 05608 - Manual (Page 6)

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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 on the agent
cylinder dome. The agent cylinder must be hydrostatically tested in accordance with DOT
requirements to the test pressure indicated on the nameplate 500 psi (3448 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.
6. Check ring pin for freedom of movement. Replace if bent, or if removal appears difficult.
7. Visually inspect, without removing, the agent fill plug for damage or distortion. Replace as
necessary only after proper depressurization procedures have been performed (see complete
Maintenance
– Six Year Teardown instructions).
8. WARNING: ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY. ANY
EVIDENCE OF AGENT IN THE NOZZLE INDICATES THAT THE UNIT
MAY HAVE BEEN USED AND THE USE NOT REPORTED. BE
PREPARED FOR A POSSIBLE DISCHARGE AND NOZZLE RECOIL.
Check the nozzle shutoff lever for freedom of movement (open and close several times). If the
operation is impeded, disassemble the nozzle, replace parts and/or properly lubricate as
necessary. Make sure that the nozzle tip is clear and unobstructed.
9. After making sure that there is no residual pressure in the discharge hose, disconnect it from the
operating valve. Blow air through the hose and nozzle assemblies to insure that the passage is
clear of foreign material. Check the couplings, hose and hose gasket for damage or
deterioration
– replace as necessary.
10. 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 Complete Maintenance
Procedure.
11. Reconnect the hose to the agent cylinder. Properly coil the hose on the rack and install the
nozzle (with the lever in a closed position) on the mount.
NOTE:
WHEN ASSEMBLING THE HOSE TO THE AGENT CYLINDER OR
NOZZLE TO THE HOSE, TIGHTEN THE COUPLING ¼ TURN AFTER
CONTACTING THE HOSE GASKET.
12. Inspect the wheels on Models 488, 489 or 490 to insure they rotate freely. Lubricate as
required. On stationary models, check mountings to insure that they are securely fastened.
13. Check carriage assembly for loose nuts, bolts, frame distortion or damage. Check welds for
damage or corrosion. Replace damaged parts or make repairs as necessary.
14. Install new lockwire (tamper) seal and record service data on the extinguisher inspection tag.
15. If the extinguisher has been moved to perform service, make sure that it is returned to its proper
location.