Huawei NetCol5000-A025 User Manual page 34

NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width)
Item
Power supply
Note: If some conditions are not met, contact Huawei technical support.
Water Quality Requirements for Wet Film Humidifiers
The inlet water pressure should be in the range of 0.1–0.7 MPa (A reducing valve
must be installed if the inlet water pressure exceeds 0.7 MPa.), and the
temperature should be in the range of 1°C–40°C.
The wet film humidifier should use tap water (no water treatment facility needed
for the inlet water) that meets the following requirements:
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Water Quality Requirements for Electrode Humidifiers
If the inlet water contains large granules, install a water filtering device at the
inlet port to prevent pipe blockage.
The inlet water pressure should be in the range of 0.1–0.7 MPa (A reducing valve
must be installed if the inlet water pressure exceeds 0.7 MPa.), and the
temperature should be in the range of 1°C–40°C.
Table 2-7 Water quality requirements for electrode humidifiers
Item
Hydrogen ion
Conductivity at 20°C
(σ
Inlet water hardness
specifications
Issue 15 (2020-12-10)
Non-freezing and nephelometric turbidity units (NTU): < 3
No visible substances
6.5 ≤ pH value ≤ 8.5
Total hardness (in CaCO
NO TICE
a
)
20
b
Copyright © Huawei Technologies Co., Ltd.
Specifications
Leakage switches are not recommended for the main
circuit. If leakage switches are required by the customer
or local regulations, use the residual current circuit
breaker (RCCB) that is insensitive to the single-phase
DC pulses and transient current pulses
): ≤ 450 mg/L
3
Requirement
7–8.5
125–1250
≤ 100
2 Product Description
Unit
pH
µS/cm
mg/L
24