Product Manual

PN 14425 04/2020
9. Inspect valve assembly for corrosion or damage to hose thread connection. Replace valve assembly or
component parts as necessary following the proper depressurization and recharge procedures. If valve
removal is necessary, complete all steps in the Recharge Procedure.
10. Install nozzle or hose and nozzle assembly.
11. Install new tamper seal, and record service data on the extinguisher inspection tag.
12. Rehang the extinguisher on the wall hanger bracket making sure that it fits the hanger bracket properly –
replace the bracket if necessary.
WARNING
a. Halotron service shall be performed only in a well-ventilated room by a properly trained service
technician wearing proper eye protection and rubber gloves.
b. Before attempting to recharge, be sure this extinguisher is completely depressurized by slowly and
carefully depressing the operating lever and discharging the extinguisher into a proper collection area.
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 shall 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.
f.
RECHARGE
Recharging NFPA 10. is the replacement of the extinguishing agent and also includes the expellant for this
type of extinguisher.
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 (PN 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 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 PN 14538 Halotron I
Recharge Kit or equivalent.