9-2
September 2004
Argonite
®
Engineered Fire Suppression System
38-KFSARG-000
9-4
GENERAL FILLING
The filling process may use pressure or weight as the means of controlling the quantity of
the two gases administered. The quantity and pressure must be in accordance with the
specific requirements.
9-4.1
Filling, Pressure Controlled
The Kidde Fire Systems Argonite systems utilize cylinder storage pressures of 2900 PSI
(200 bar) at 70°F (21.1°C). See the Pressure/Temperature chart for Argon, Nitrogen and
combined Argonite in Paragraph 9-4.2.1.
The filling may be initiated using either of the two gases.
9-4.1.1
FILLING: 2900 PSI (200 BAR) NOMINAL
1. Fill Nitrogen to 1450 to 1500 PSI (100 to 104 bar) pressure.
2. Top off with Argon until the specified filling pressure of 2900 PSI (200 bar)
is reached.
3. Alternatively, fill Argon to 1320 to 1375 PSI (91 to 95 bar) pressure.
4. Top off with Nitrogen until the specified filling pressure of 2900 PSI (200 bar)
is reached.
The final pressure and temperature shall be checked according to a minimum
pressure of 2900 PSI (200 bar) at 70°F (21.1°C).
9-4.2
Filling, Weight Controlled at 70°F (21.1°C)
Nitrogen and Argon shall be administered according to the table below in order to achieve
the required cylinder pressure. It must be noted that the net volume of the cylinder shall
be used for calculating the required quantity of the individual gases.
The final filling pressures(s) shall be verified. See the Pressure/Temperature chart for
Argon, Nitrogen and combined Argonite in Paragraph 9-4.2.1.
If topping off is required, this is to be done using Nitrogen.
9-4.2.1
PRESSURE/TEMPERATURE/WEIGHT RELATIONSHIP
Table 9-1. Gas Pressure/Temperature/Weight Chart
Nominal
Pressure
Temperature
Nitrogen kg/L
Argon
kg/L
Argonite
kg/L
2900 PSI
(200 bar)
70°F
(21.1°C)
0.114 to 0.119
0.156 to 0.163
0.272 to 0.274
9-4.3
Refilling After Discharge
After discharge, the cylinders will remain pressurized to approximately 45 PSI (3 bar)
and thus contain dry Argonite from the previous filling.
The cylinder is to be repressurized according to local requirements. The surface treatment
and coating shall be intact. If damaged, the topcoat shall be repaired according to the
paint specification using compatible paint in the same color (RAL code).
Cylinders shall be restamped as required by local requirements and the service label on
the cylinder shall be filled out.