Amerex 14425 User Manual
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c.
Use a regulated pressurizing source using ARGON ONLY. Set the regulator to no more than 25 psi
higher than the extinguisher gauge operating pressure.
d.
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.
e.
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.
RECHARGE
Note: The following procedure is for an EMPTY Halotron I extinguisher. If you are recharging an
extinguisher, which has been partially discharged (with agent remaining in the cylinder) or has been
recharged and the pressure leaked, follow the instructions contained in the Recharging Instructions
packaged with the Amerex Recharge Kit (P/N 14538) or with Getz Halotron recovery equipment.
1.
Complete items 1 through 9 in Maintenance Service Procedure above.
2.
Verify that there is no pressure remaining in the extinguisher.
3.
Remove the valve assembly by turning it counter clockwise. Disassemble by removing downtube
assembly (use a wrench on the downtube retainer, not the tube), spring and valve stem from the valve
assembly.
4.
REMOVE AND DISCARD THE COLLAR O-RING AND VALVE STEM ASSEMBLY. Inspect and clean
the spring with a clean, dry cloth – replace if worn or damaged. Clean internal valve body surfaces and
threads with a soft bristle brush making sure that the valve stem seating area is not scratched. Install
a new (green) collar o-ring and valve stem assembly (green seal). Lightly 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 damaged replace with proper downtube (see Parts List). Install downtube securely.
NOTE: Valve assemblies are not indexed. Keep original valve assembly/cylinder combinations together
while performing maintenance or recharge to assure proper nameplate orientation.
5.
Inspect the interior of the cylinder following CGA Visual Inspection Standard, C-6.
6.
Install the valve assembly to the cylinder in a clockwise direction Install the proper Amerex recharge
adapter and draw a vacuum of 27" of mercury (adjusted for altitude variations – see your vacuum pump
manual for detailed instructions). Place the extinguisher on a scale and tare weight prior to filling.
7.
Connect the extinguisher to a Halotron I supply cylinder using the Amerex P/N 14538 Halotron I
Recharge Kit or equivalent.
NOTE: The Halotron I supply cylinder MUST be pressurized to approximately 100 psi with ARGON at
all times.