Amerex 16303 User Manual

Page 4

Thoroughly clean all parts of the disassembled valve with a soft bristle brush or soft cloth.
Blow the valve out with air or nitrogen. Inspect the spring and downtube assembly, and
replace parts if worn or damaged. Replace the valve stem and collar o-ring. Lubricate the
collar o-ring and small o-ring on the valve stem with Visilox V-711 (do not lubricate the valve
stem seal). Inspect the downtube. If it is cracked or deformed replace with proper
downtube. Inspect downtube o-ring, replace if necessary.

Rinse the cylinder with clean water and inspect the interior following CGA Visual Inspection
Standard C-6.

Firmly replace the plastic fill tube and fill cylinder with DE-IONIZED WATER to the bottom of
the fill tube. (Model B270 1.8 U.S. gals./6.81 liters Amerex Charge 670)(Model B272 2-½
U.S. gals/9 ½ liters Amerex Charge 671).

NOTE: THE USE OF DE-IONIZED WATER CONFORMING TO NFPA 10 IS REQUIRED.

Install a "Verification of Service" collar around neck of cylinder. Install valve assembly to the
cylinder and properly align.

CAUTION: HAND TIGHTEN THE VALVE COLLAR NUT 100-125 IN LBS. MAX (1.15-1.44
KG/M. OVER-TIGHTENING WITH A WRENCH WILL DAMAGE THE VALVE.

Install a P/N 09492 Fill Adapter (High Performance) to the male valve outlet (where the hose
assembly attached) and pressurize with nitrogen to 100 psi (690 kPa). The pressure
regulator should be set to no more than 125 psi (862 kPa). Remove Fill Adapter.

CAUTION: DO NOT USE COMPRESSED AIR TO PRESSURIZE THIS EXTINGUISHER.

Check the collar, gauge, cylinder welds and valve orifice for leaks using a leak detection
fluid or a solution of soapy water. Remove leak detection fluid from the valve assembly by
blowing out with air and wipe exterior of the extinguisher to dry.

10.

Install house & wand assembly into the operating valve

NOTE: CAREFULLY POSITION THE HOSE TO A NATURAL ANGLE BEFORE
TIGHTENING THE HOSE FEMALE SWIVEL NUT. TORQUE SWIVEL NUT LIGHTLY
USING 15/16" WRENCH. INSTALL IN HOSE CLIPS.

11.

Install ring pin with ring facing the front of the extinguisher.

12.

Install tamper seal. Record recharge date and attach new recharge tag.

13.

Weigh assembled extinguisher and confirm that the total weight is within the allowable
tolerances indicated in the Maintenance section of the nameplate (label).