Amerex 05606 User Manual

Page 8

RECHARGE

[NFPA-10] is the replacement of the extinguishing agent (also includes the expellant for this
type of extinguisher.

WARNING:

a. Use a protective shield between you and the pressure gauge while

charging an extinguisher. Do not stand in front of the gauge if a shield
is not available.

b. Use a regulated pressurizing source of dry nitrogen only with a

minimum dew point of minus 70ºF (minus 57ºC). Set the regulator to no
more than 25 psi above the extinguisher operating pressure.

c. Check and calibrate regulator gauge at frequent intervals. The regulator

gauge should be used to determine when the intended charging
pressure has been reached. Do not use the extinguisher gauge for this
purpose.

d. Never leave an extinguisher connected to a regulator of a high pressure

source for an extended period of time. A defective regulator could
cause the cylinder to rupture due to excessive pressure.

RECHARGING PROCEDURE

Perform steps 1 through 8 of the "Complete Maintenance (Six Year Teardown)" section.

CAUTION: All extinguisher and charging system valves must be closed before starting this
procedure.

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 collar o-ring, valve stem, spring and
downtube assembly, and 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).

Follow all recharging instructions on Getz HR-1 or other "approved" Recharge/Recovery
System.

Fill extinguisher with amount of halon 1211 specified on nameplate and pressurize to the
pressure specified with dry nitrogen.

Remove the recharge adapter. Some residual halon vapor may remain in the valve orifice
as a result of the charging procedure. Before attempting to leak detect, vacuum or blow the
vapor away from the areas to be checked. Check extinguisher for leaks at the valve orifice,
around the collar seal, cylinder welds and gauge using a Portable Halogen Leak Detector
(preferred method). The alternate method is to apply leak detecting fluid or a solution of
soapy water to these areas. Use dry nitrogen to blow all liquid residue out of the valve and
wipe the extinguisher to dry the exterior. DO NOT LEAVE ANY LIQUID INSIDE THE
VALVE BODY.

Install hose assembly, with shut-off nozzle attached, to the extinguisher discharge valve.
Tighten hose coupling ¼ turn after contact with hose gasket. Coil hose onto the hose rack
and nozzle into mount.

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

Record recharge date and attach new recharge tag in accordance with the requirements of
the "Authority Having Jurisdiction".