Step 6 Send the fire extinguisher cylinder to a station to refill extinguishant.
Heptafluoropropane or perfluorohexanone is recommended. The required amount
is 3 kg.
NO TICE
● In the process of assembling and filling, ensure that the valve, container, and
other parts are clean and not polluted.
● The internal impurities of the fire extinguisher cylinder have been cleaned and
the container valve has been sealed. Do not remove the container valve and its
components. For other operations, see the related filling specifications.
1. Connect the extinguishant filling port of the container valve to the
extinguishant filling device. The thread specification of the extinguishant
filling port is M10x1.
2. Remove the valve positioning kit, open the valve, and fill 3 kg extinguishant.
Close the valve after filling the extinguishant.
3. Connect the filling port of the container valve to the nitrogen filling device,
open the valve, and fill nitrogen until the filling pressure reaches the specified
value. After filling nitrogen, close the valve.
4. Shake the cylinder for 10 times and then fill nitrogen until the pressure
reaches the specified value. Repeat this step for two to three times until the
pressure does not change. Then install the valve positioning kit. After 12
hours, observe the pressure again. If the pressure does not reach the value
listed in the following table, add nitrogen until the pressure reaches the
required value.
Table 4-4 Mapping between temperatures and pressures
Temperat
ure (°C)
Recommended Pressure Allowed Pressure Range
0
12 bar (1.2 MPa)
11–13 bar (1.1–1.3 MPa)
10
14 bar (1.4 MPa)
13–15 bar (1.3–1.5 MPa)
20
17 bar (1.7 MPa)
16–18 bar (1.6–1.8 MPa)
25
18.5 bar (1.85 MPa)
17.5–19.5 bar (1.75–1.95 MPa)
30
20 bar (2.0 MPa)
19–21 bar (1.9–2.1 MPa)
40
23 bar (2.3 MPa)
22–24 bar (2.2–2.4 MPa)
5. After the filling is complete, check for leakage according to the procedure of
the filling station.
Step 7 Check the status of the fire extinguisher cylinder after filling extinguishant. If the
cylinder is not installed in the cabinet immediately after extinguishant is filled,
check the status of the cylinder again before installation.
●
Check that the valve is closed (vertical to the cylinder).
SmartLi 2.0
User Manual
4 Installation
Issue 09 (2022-01-30)
Copyright © Huawei Technologies Co., Ltd.
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