Amerex 05617 - Manual (Page 6)

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.
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 valve assembly for corrosion or damage to hose thread connection. Visually inspect the safety disc
assembly on the discharge valve for obstruction or damage. Valve removal and/or valve part
replacement should be made only after following the depressurizing procedures listed in the COMPLETE
MAINTENANCE procedures.
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 to insure they rotate freely. Lubricate as required. Check all mounting bolts and fixtures if
the unit is a Stationary extinguisher.
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 tamper seal if necessary 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.
COMPLETE MAINTENANCE (SIX YEAR TEARDOWN)
COMPLETE MAINTENANCE (SIX YEAR TEARDOWN) [NFPA-10 4-4.1.4] 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.
CAUTION: SOME STATES HAVE LEGISLATED A “COMPLETE MAINTENANCE” ON AN ANNUAL BASIS.
AN NFPA RECOMMENDED, U/L APPROVED EXTERNAL COLLAR TAG INDICATING THE
NATURE OF THE WORK PERFORMED, MUST BE INSTALLED AS PART OF THIS SERVICE.
COMPLETE MAINTENANCE (SIX YEAR TEARDOWN) PROCEDURES
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.
CAUTION: THESE EXTINGUISHERS OPERATE AT 350 PSI. IN ORDER TO SAFELY AND EFFICIENTLY
USE MOST RECOVERY SYSTEMS, IT WILL BE NECESSARY TO REDUCE THE PRESSURE TO
LESS THAN 250 PSI. USE THE PRESSURE BLEEDER) VALVE ON THE EXTINGUISHER VALVE
TO REDUCE THE PRESSURE TO A POINT REGISTERING JUST BELOW THE GREEN OPER-
ABLE AREA ON THE PRESSURE GAUGE. DISCHARGE EXTINGUISHER INTO RECOVERY
SYSTEM. RE-PRESSURIZE THE EXTINGUISHER (TO NO MORE THAN 250 PSI) TO EXHAUST
ANY CHEMICAL REMAINING IN THE EXTINGUISHER.
Note: A “closed” recovery system is designed to prevent loss of the chemical “fines”. Loss of the “fines” could
result in reduced extinguisher efficiency.
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
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