1. On the Diagnostic Mode Parameters page, set Wet film humidifier manual
control to 100% and click Submit.
2. The water inlet valve automatically opens to inject water to the wet film.
Ensure that the water pan and water inlet pipe do not leak.
3. Wait for 3–10 min and check that the wet film is wet.
4. On the Diagnostic Mode Parameters page, set Wet film humidifier manual
control to 0% and click Submit. Check that the drainpipe does not leak.
Step 6 Commission the condensate pump.
1. Lift the low liquid level detector and check that you can hear the water pump
operating sound after 5 seconds
2. Lay down the detector.
NO TE
It is normal if a condensate pump faulty alarm is generated during the pump
operation when there is no water in the pan. The condensate pump generates this
alarm for self-protection. The alarm needs to be cleared manually.
Step 7 Commission the compressor. On the Diagnostic Mode Parameters page, set
Comp manual control to 3000 rpm.
1. Choose Running Info > Compressor Information, read Suction Pressure and
Exhaust Pressure, and check whether the suction pressure and exhaust
pressure of the compressor are within the proper ranges. Choose Running
Info > Electronic Expansion Valve Information, check EEV suction
overheating degree. The proper range is 4–15°C.
lists the proper
exhaust pressure ranges.
NO TE
The proper range of the air suction pressure is 0.7–1.6 MPa, and the pressure ratio (air
exhaust pressure to air suction pressure) is greater than 1.4.
Table 5-6 Proper ranges of the air exhaust pressure
Outdoor Ambient Temperature
Exhaust Pressure Range
Below 15°C
1.5–2.5 MPa
15–35°C
1.5–3.1 MPa
35–45°C
2.5–3.8 MPa
Above 45°C
3.1–4.0 MPa
2. To add refrigerant, perform the following steps:
a. Close the high-pressure valve and low-pressure valve of the pressure
gauge.
b. Take off the vacuum pump and install the liquid refrigerant cylinder.
c.
Slightly open the refrigerant cylinder valve and slightly loosen the
connection nut of the pressure gauge. Tighten the nut when cold air
escapes out of the nut.
d. Put the refrigerant cylinder upside down on the electronic balance. Clear
the reading on the balance.
FusionModule800 Smart Small Data Center
User Manual
5 Power-On Commissioning
Issue 01 (2021-02-05)
Copyright © Huawei Technologies Co., Ltd.
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