PN 05620
04/2020
NOTE: NFPA 10 spells out wheeled
-
extinguisher maintenance procedures. Para. 4
-
4.1.3 requires
that REGULATORS on wheeled extinguishers be checked annually to meet manufacturer
’
s
“
dead set
”
and
“
minimum flow
”
recommendations. The Getz Mfg. PN: 52576 Wheeled
Extinguisher Service Kit is available so that you can perform these required functions.
Getz part numbers from the kit are referenced in this manual.
ANNUAL MAINTENANCE PROCEDURES
WARNING: BEFORE SERVICING BE SURE THE EXTINGUISHER AGENT CYLINDER IS NOT
PRESSURIZED.
NOTE: This procedure will be best accomplished with the extinguisher in an upright position and
on a level surface.
1.
Clean extinguisher to remove dirt, grease, or foreign material. Check to make sure that the instruction
nameplate is securely fastened and legible. Inspect the cylinders for corrosion, abrasion, dents, or weld
damage. If damage is found, hydrostatically test in accordance with instructions in CGA Pamphlet C
-
1 and
C
-
6 and NFPA 10.
2.
Inspect the extinguisher for damaged, missing, or substitute parts. A careful inspection shall be made of
the safety relief to make sure that it has not ruptured, corroded, or been tampered with. Only factory
-
replacement parts are approved for use on Amerex fire extinguishers.
3.
Check the date of manufacture on the extinguisher nameplate or on the agent cylinder dome. The agent
cylinder assembly and discharge hose assembly must be hydrostatically tested every 12 years. Test
pressure for the agent cylinder is 500 psi (3448 kPa). Test pressure for the hose assembly is 300 psi
(0268 kPa).
4.
Check the hydrostatic test date on the crown of the Argon cylinder. The Argon cylinder must be retested in
accordance with D.O.T. regulations every 5 years.
5.
Check the gauge on the Argon cylinder. If the pressure is below 1700 psi (11.7 mPa) repressurize the
cylinder to 2015 psi (13.9 mPa) or replace it. Low pressure may indicate leakage. Check for leaks. A low
gauge reading may also result from low temperature. See the temperature/pressure relationship chart in
the
“
Troubleshooting Guide
”.
Check the tamper seal on the Argon valve and replace if necessary.
6.
Inspect the wheels to insure they rotate freely. Lubricate as required.
WARNING: THE FOLLOWING STEPS SHALL ONLY BE PERFORMED BY PROFESSIONALLY
TRAINED AND QUALIFIED SERVICE PERSONNEL THOROUGHLY FAMILIAR WITH
INDUSTRY SERVICE PROCEDURES AND SAFETY PRECAUTIONS AND HAVING THE
NECESSARY EQUIPMENT TO PERFORM THE SERVICE PROPERLY. ALL
EXTINGUISHER AND SERVICE EQUIPMENT COMPONENTS, FITTINGS, AND
ADAPTERS MUST BE IN GOOD CONDITION AND PROPERLY CONNECTED.
7. Disconnect the regulator from the agent cylinder. Visually examine the regulator and high pressure hose
for signs of damage, corrosion, or deterioration. To perform the regulator static pressure, dead set, and
minimum pressure flow rate checks:
a)
Connect the proper service kit ADAPTER (PN: 01740) to the low
-
pressure outlet port of the regulator.
b)
Connect the service kit HOSE ASSEMBLY (PN: 01410) and FLOW CHAMBER (PN: 01250) to the
regulator low
-
pressure port adapter.
8.
Make sure all service kit connections are secure and that the kit flow chamber is CLOSED. Check the
ARGON cylinder pressure to ensure that it is within the acceptable operating range. Hold the kit flow
chamber in one hand, and slowly open the Argon cylinder (with either
“
T
”
handle operating lever or by
turning the handwheel if so equipped). Observe flow chamber pressure reading to see if it is within the
recommended static dead
-
set pressure parameters for the Models 680 & 681 regulator listed below.
Regulator Type
Victor
Static Dead Set Pressure
120 ± 10 PSI
Minimum Flow Pressure
110 PSI Minimum
