Amerex 05615 - Manual (Page 6)

Manual 05615 Rev. D Page 5
d. Slowly pressurize the discharge hose/nozzle assembly to the extinguisher operating pressure and
check for leaks or distortion.
e. Operate the nozzle lever to ensure proper operation and to clear the hose of any obstructions. If
hose is obstructed refer to Troubleshooting Guide. Make sure that the nozzle aspirating holes
and screen are clear and unobstructed
– clean if necessary.
f. Close the nitrogen pressure source and slowly relieve remaining pressure by fully operating the
nozzle lever.
9. Remove the agent cylinder cap and examine it closely for any signs of damage, cracks or thread wear.
Clean the agent cylinder fill cap threads and thread vent port on the cap with a stiff bristle nylon brush.
Remove the fill cap gasket and check for wear, cracks or tears
– replace if necessary. Lightly lubricate
the gasket with Visilox and reinstall.
10. Check the condition of the chemical solution. The level of the solution should be 9 inches (23 cm) below
the top of the fill opening. Recharge if contaminated, if the solution level is down or if the charge is over
three years old. See Recharge instructions and procedures.
11. Place the service kit Vent Spacer on top of the agent cylinder fill opening collar. Check again to see that
the fill cap thread vent is clean and that the agent fill cap gasket is in place. Install the agent fill cap
securely over the vent spacer.
12. CAUTION: The agent cylinder cap threads must be clear and the cap securely installed onto
the vent spacer and agent cylinder to allow pressure to slowly vent after
performing the siphon tube clearing and gas tube integrity checks.
To perform a siphon tube clearing and gas tube integrity check:
a. Remove the service kit Agent Hose Adapter from the discharge hose assembly and install it
securely onto the agent cylinder siphon tube outlet.
b. Using a regulated nitrogen pressure source set to the extinguisher operating pressure, slowly and
briefly pressurize the agent cylinder (the siphon tube should be clear within a couple of
seconds and the agent cylinder pressure slowly vent from the fill cap thread vent).
Pressure and/or foam agent leaks from the gas tube inlet port (where the hose connects) will
indicate a defective gas tube and will require that the agent cylinder be emptied and the gas tube
replaced.
c. Close the nitrogen pressure source and allow all pressure to slowly vent from the thread vent port
on the fill cap.
d. AFTER ALL PRESSURE HAS BEEN RELIEVED, SLOWLY OPEN THE FILL CAP AND
REMOVE THE TEST KIT VENT SPACER.
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 should 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 P/N 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 7). 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.