3
RECHARGING PROCEDURE
RECHARGING [NFPA 10, 7.4, 2007] IS THE REPLACEMENT OF THE EXTINGUISHING AGENT AND EXPELLANT FOR THIS
TYPE OF EXTINGUISHER.
1. Discharge all remaining pressure and water, making sure there is no remaining pressure. Do not reuse or top off water.
2. Remove the valve assembly from the cylinder. Unscrew the spring retainer, using a wrench, from the valve assembly
and remove the spring and valve stem assembly. Remove the collar o-ring from the valve assembly.
3. Thoroughly rinse all the parts with clean water and pat dry with a clean soft cloth. Blow air or nitrogen through the valve
assembly. Inspect the collar o-ring, valve stem and valve assembly and replace worn or damaged parts. Lubricate the
collar o-ring and the small valve stem o-ring with Parker O-Lube. Do not lubricate the Valve Stem Seal. Inspect the
siphon tube and replace is damaged.
4. Remove the fill tube. Rinse the cylinder with clean water and inspect the interior according to CGA Visual Inspection
Standard, Pamphlet C-6. Replace fill tube.
5. Recharge using fresh potable drinking water, following the instruction on the label.
6. Place a “Verification of Service” collar around the neck of the cylinder. Install the valve assembly and siphon tube to the
cylinder and align with nameplate.
a. The valve assembly collar nut should only be hand tightened to a maximum of 125 in./lb. Over tightening with
a wrench will damage the valve.
7. Fasten the recharge adaptor to the valve assembly and pressurize with nitrogen or dry air to 100 psi (690 kPa). The
pressure regulator should be set at no more than 125 psi (862 kPa). Remove the recharge adaptor.
8. Carefully inspect the collar o-ring, gauge face and threads, cylinder welds and valve stem for leaks using leak detection
fluid or a soapy water solution. Using air or nitrogen, blow out the leak detection fluid and wipe the extinguisher dry.
9. Install the hose assembly into the valve assembly. Hand tighten and install in hose band.
10. Install the pull pin with the loop at the front of the extinguisher. Install a new tamper seal. Record the recharge date on
the new tag and attach to the extinguisher.
11. Weight the extinguisher to verify compliance within the parameters indicated on the extinguisher nameplate (label).
TROUBLESHOOTING GUIDE
WARNING:
BEFORE ATTEMPING TO CORRECT ANY LEAKAGE PROBLEM, BE SURE THAT THE EXTINGUISHER IS
COMPLETELY EMPTY AND DEPRESSURIZED.
Note:
Check to determine the source of the leak before the extinguisher is empty. Leakage repairs will require that
the extinguisher be completely empty and the valve assembly removed.
When re-installing the valve assembly, the cylinder must be placed in a suitable securing vice and valve
installed hand tight.
PROBLEM
CORRECTIVE
ACTION
1. Leak at collar o-ring
Remove valve assembly, clean collar thoroughly and install new collar o-
ring. Lubricate with Parker O-Lube.
2. Leak through valve
Remove spring and valve stem assembly. Install new OEM valve stem
assembly. Check valve seat for scratches or foreign matter.
3. Leak around gauge threads
Once de-pressurized, remove gauge. Clean threads and re-install gauge
using Teflon tape on gauge threads.
4. Defective gauge
Once de-pressurized, remove gauge. Install new OEM gauge using Teflon
tape on gauge threads.
5. Restricted or intermittent discharge of chemical
Check hose assembly and nozzle for dirt, sediment or obstruction. Clean
and replace parts as necessary.
6. Defect in the cylinder*
Contact a Strike First dealer if under warranty, otherwise – mark
“CONDEMNED” and remove from service or return to owner.
