Amerex 05615 - Manual (Page 5)

Manual 05615 Rev. D Page 4
MAINTENANCE
MAINTENANCE
– SERVICE PROCEDURE
WARNING: BEFORE SERVICING BE SURE THE EXTINGUISHER AGENT CYLINDER IS NOT
PRESSURIZED. THIS PROCEDURE IS BEST ACCOMPLISHED WITH THE EXTINGUISHER
IN AN UPRIGHT POSITION AND ON A LEVEL SURFACE.
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 in accordance with instructions in CGA C-1 and C-6
and NFPA 10.
2. Inspect the extinguisher for damaged, missing or substitute parts. A careful inspection should be made of
the safety relief to make sure that it has not ruptured, corroded or been tampered with. Only factory
replacement parts are approved for use on Amerex fire extinguishers.
3. Check the date of manufacture printed on the extinguisher label (nameplate) or on the agent cylinder
dome. The agent cylinder, the discharge hose assembly and nitrogen supply hose must be
hydrostatically tested every 5 years. Test pressure:
a. Agent Cylinder – 450 psi (3103 kPa)
b. Hose Assembly – 300 psi (2068 kPa)
c. Nitrogen Supply Hose – 3000 psi (20,628 kPa)
4. Check the hydrostatic test date on the crown of the nitrogen cylinder. The nitrogen cylinder must be
retested in accordance with DOT regulations.
5. Check the gauge on the nitrogen cylinder. If the pressure is below 1700 psig (11.7 mPa) repressurize the
cylinder to 2015 psig (13.9 mPa) or replace it. A low gauge pressure may indicate leakage. Check for
leaks. A low gauge reading may also result from low temperature. See the temperature/pressure
relationship chart in the Troubleshooting Guide. Check the tamper indicator (lockwire seal) on the
nitrogen valve and replace if necessary.
6. Wheeled extinguishers (Model 630) – Inspect the wheels to insure they rotate freely. Lubricate as
required. Stationary extinguishers (Model 631) – Check to insure that any mounting fixtures are secure.
7. WARNING: ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY. ANY PRESSURE IN
THE AGENT CYLINDER WILL CAUSE THE EXTINGUISHER TO DISCHARGE. BE
PREPARED FOR A POSSIBLE DISCHARGE AND NOZZLE RECOIL. ANY
EVIDENCE OF AGENT IN THE NOZZLE INDICATES THAT THE UNIT MAY HAVE
BEEN USED AND THE USE NOT REPORTED.
Disconnect the discharge hose from the agent cylinder. Check the couplings, hose and hose gaskets for
damage or deterioration
– replace as necessary.
8. To perform an operational integrity check on the discharge hose and nozzle combination:
a. Connect the test kit hose adapter to the female end of the discharge hose.
b. Close the discharge nozzle shut-off lever and properly secure it.
c. Connect a properly regulated and verified nitrogen pressure source, set to the extinguisher
operating pressure (235-245 psi) to the test kit hose adapter.
At least once a year or more frequently if circumstances require, maintenance should be performed.
Maintenance is a "thorough check" of the 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.
NOTE: The Getz Manufacturing Universal Wheeled Extinguisher Service Kit is available so that NFPA-10
required maintenance functions can be performed. Getz part numbers are referenced.