Table 5-3 Normal discharge pressure ranges
Ambient Temperature Discharge Pressure Range
< 15°C 1.5–2.5 MPa
15–35°C 1.5–3.1 MPa
35–45°C 2.5–3.8 MPa
> 45°C 3.1–4.15 MPa
3. If possible, check that the subcooling degree is within the range of 4–6°C, and
check that there are no bubbles in the refrigerant seen from the sight glass.
Recharge or discharge refrigerant if necessary.
Discharge refrigerant from the discharge pipe needle valve.
4. After twenty minutes, check that the oil level is stably above 1/3 of the oil
sight glass and that no impurity or muddy, as shown in Figure 5-6.
Figure 5-6 Oil level
Step 6 Adjust the humidier and condensate pump.
● During initial commissioning, gently open the front valve and empty air out of
the water inlet pipe. Otherwise, water may spout out of the top of the
humidier cylinder.
● Before enabling humidication, turn on the humidier switch QF5 and ip the
drainage switch to O: Normal humidifying. Otherwise, water will not be
injected into the humidier cylinder.
● Do not turn o the humidier switch QF5 when the humidier is running.
Otherwise, the
humidier neither works nor generates alarms. To rectify the
fault, disconnect the power supply to the entire system and then power it on.
1. After the humidier is started, the water supply solenoid valve leads to a
higher liquid level in the humidier cylinder. Water supply is smooth and the
water pipe is free from leakage. After 10 minutes, the water inside the
humidier cylinder is with bubbles or boils. (The water boiling time is relevant
NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width) 5 Power-On Commissioning
Issue 17 (2020-10-22) Copyright © Huawei Technologies Co., Ltd. 147
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