PN 05615
04/2020
e.
Re
-
examine the foam agent to determine if any obstructions were cleared from the siphon tube and
have risen to the liquid surface.
f.
Clean the fill cap and agent cylinder thread surfaces. Install the fill cap gasket, and securely install fill
cap.
13.
Disconnect the high pressure hose from the nitrogen cylinder valve. Securely install the service kit
Nitrogen Cylinder Pressure Check Gauge Assembly to the nitrogen cylinder valve outlet, and verify the
indicated cylinder gauge pressure. Nitrogen pressure shall conform to the temperature correction chart
provided in the Troubleshooting section of this manual. Close the nitrogen cylinder valve, and disconnect
the Pressure Check Gauge Assembly.
WARNING: IF THE NITROGEN CYLINDER VALVE HAS A "T" HANDLE QUICK OPENING OR A
HANDWHEEL QUICK OPENING TRIP RELEASE, THE SAFETY VENT PLUG SHIPPED
WITH THE EXTINGUISHER, OR THE TEST KIT SAFETY VENT PLUG, MUST BE
INSTALLED TO PROTECT SERVICE PERSONNEL FROM A HIGH
-
VELOCITY
DISCHARGE IN CASE THE LEVER IS ACCIDENTALLY OPENED.
14.
Install a new Amerex PN 07411 Moisture Seal per instructions in the package. Securely connect the
discharge hose to the extinguisher.
When assembling the hose to the agent cylinder or nozzle to the
hose, tighten the coupling ¼ turn after contacting the hose gasket
.
15.
Coil the hose on to the extinguisher hose rack using the Reverse Loop Procedure (see Page 10). Install
nozzle with the lever in the Closed (forward) position into the nozzle mount.
16.
Remove the safety vent plug from the nitrogen cylinder. Reconnect the high
-
pressure hose securely to the
nitrogen cylinder valve. Wipe the extinguisher clean. Record service data on the inspection tag according
to NFPA 10 requirements, and attach to extinguisher. Return extinguisher to its proper location.
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.
