Amerex 05619 - Manual (Page 6)

5
RECHARGE PROCEDURE
1. Perform steps 1 through 4 of the "Complete Maintenance (Six Year Teardown)" section including
those required in the "Maintenance Procedure".
2.
Thoroughly clean all parts with a soft bristle brush or soft cloth. Blow the valve and downtube out with
air or argon. Inspect the collar o-ring, valve stem, spring and downtube assembly – replace parts if
worn or damaged. Lubricate the collar o-ring and small o-ring on the valve stem with Visilox V-711.
DO NOT LUBRICATE THE VALVE STEM SEAL.
3. Reassemble the valve assembly, including downtube and set aside.
4.
Remove any dry powder remaining in the cylinder. Properly dispose of any dry powder that is
contaminated or caked.
5.
Inspect the cylinder interior following CGA Visual Inspection Standard, Pamphlet C-6.
6. Fill the cylinder with 30 pounds (13.6 kg) of Amerex Copper Powder, which has been kept free of
moisture and contamination.
7.
Clean cylinder o-ring seat and threads inside of cylinder collar with a small brush and wipe surfaces
with a clean damp cloth to remove dust. Lightly brush the collar o-ring seat with Visilox V-711. Install
the operating valve/downtube assembly hand tight.
8.
Attach the charging adapter to the valve discharge port.
WARNING: THIS EXTINGUISHER IS FACTORY PRESSURIZED USING ARGON. ARGON IS AN
INERT GAS THAT WILL NOT ADVERSELY REACT WITH COMBUSTIBLE METALS. NITROGEN
PRESSURIZING GAS COULD CAUSE A REACTION WHEN USED ON CERTAIN TYPES OF
COMBUSTIBLE METAL FIRES. DRY AIR PRESSURIZATION SHOULD NEVER BE USED AS
EVEN THE SLIGHTEST AMOUNT OF MOISTURE WILL CAUSE A VIOLENT REACTION WITH
CLASS D METALS.
9. With the extinguisher properly secured in an upright position connect your Argon pressurizing line
with a quick connect to the charging adapter. Set the Argon supply cylinder regulator to no more than
220 psi (1520 kPa). Depress the extinguisher operating valve lever and pressurize the extinguisher
with Argon to 195 psi (1345 kPa). When the desired pressure has been reached, release the
operating lever. Shut off Argon supply and remove the quick connect.
10.
Remove the charging adapter. Check extinguisher for leaks by applying leak detecting fluid or a
solution of soapy water to the valve discharge orifice, around the collar o-ring sealing area, cylinder
welds and gauge. Remove leak detecting fluid from valve assembly by blowing out with air or Argon.
Wipe exterior of extinguisher to remove any remaining residue.
11. Install the hose assembly to the operating valve. Reconnect the female swivel on the extension
applicator to the male swivel on the hose. Rotate the hose assembly several times to verify that the
swivel operates freely. Disconnect and clean the inside of the female swivel with a small brush and
compressed air if rotation is impeded. Install hose and extension applicator according to instructions
on page 10.
12. Install ring pin and 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).