Amerex 05615 - Manual (Page 7)

Manual 05615 Rev. D Page 6
RECHARGE
CAUTION:
THE FIRE EXTINGUISHING AGENT IN THIS EXTINGUISHER MUST BE COMPLETELY
REPLACED EVERY THREE YEARS.
WARNING:
BEFORE ATTEMPTING TO RECHARGE BE SURE THIS EXTINGUISHER IS COMPLETELY
DEPRESSURIZED. THERE IS A CHECK VALVE IN THE SYSTEM WHICH PREVENTS
NITROGEN PRESSURE FROM ESCAPING FROM THE AGENT CYLINDER WHEN THE
NITROGEN HOSE IS DISCONNECTED. THE AGENT CYLINDER MAY BE PRESSURIZED
EVEN THOUGH NO PRESSURE ESCAPES FROM THE CYLINDER NITROGEN
CONNECTION.
RECHARGING PROCEDURE
1. To depressurize:
a. Close the nitrogen valve.
b. Open the nozzle lever slowly to discharge all remaining agent and pressure (be prepared for
nozzle recoil).
c. Insure that all pressure has escaped before further disassembly.
2. Carefully remove the fill cap. Thoroughly rinse the complete interior of the agent cylinder with clean
water. Dump or siphon all liquid from the cylinder. Detach discharge hose from the agent cylinder
and the nozzle assembly from the hose. Remove the ruptured moisture seal from the female hose
coupling and flush the hose and nozzle assemblies with clean water.
3. Perform Maintenance-Service Procedures 1 through 6.
4. Detach the hose from the nitrogen cylinder, install the shipping cap, unscrew the wing nuts and
remove the nitrogen cylinder from the extinguisher.
5. Fill the agent cylinder with 28 gallons of clean, fresh water (to a level just touching the bottom of the
internal nitrogen tube). Pour three (3) gallons of clean, fresh water into an Amerex 2 gallon Model
534 FFFP charge. (NOTE: Charge contains 2 gallons of concentrate in a 5 gallon pail.) Carefully stir
until you have a complete and homogeneous mixture. Slowly pour the solution into the agent
cylinder. The liquid level in the extinguisher cylinder should now be 9 inches (23 cm) from the top of
the fill opening. Clean, lubricate and install (or replace if necessary) the fill cap gasket. Install the fill
cap and tighten securely. Rock the extinguisher back and forth for two minutes to accomplish a more
thorough agent mix.
WARNING: DO NOT OVERFILL THE EXTINGUISHER. THIS COULD CAUSE A MALFUNCTION
OR PREMATURE RUPTURE OF THE SAFETY DISC.
6. Install an Amerex P/N 03817 23 cu. Ft. nitrogen cylinder (pressurized to 2015 psi). Remove the
shipping cap, tighten the wing nuts securely and attach the nitrogen hose.
NOTE: NITROGEN CYLINDERS WITH A "T" HANDLE "QUICK OPENING" VALVE. REMOVE
SMALL TEMPORARY RING (SAFETY) PIN AND INSTALL A LARGE RING PIN. INSTALL A
LOCKWIRE SEAL (TAMPER INDICATOR.) NITROGEN CYLINDERS WITH A HANDWHEEL OR
LEVER ACTUATED "QUICK OPENING" VALVE. A LEADWIRE SEAL MUST BE INSTALLED.
7. Remove the remainder of the ruptured moisture seal from the agent cylinder fitting. Replace with a
new P/N 07411 Moisture Seal Assembly. Carefully follow the installation instructions contained
in the P/N 07411 package including the installation of a new clear hose gasket in the female
house coupling.
8. Reattach the hose to the extinguisher (tighten hand tight plus a ¼ turn). Properly coil the hose onto
the storage rack ring leverage loop. Reattach the shutoff nozzle firmly to the hose and store it in the
mount with the shutoff lever in the closed (forward) position.
9. Record the service date on the inspection tag and place the extinguisher in its proper location.