FusionModule800 Smart Small Data Center
Installation Guide (Six Fans)
Copyright © Huawei Technologies Co., Ltd.
Step 7 Commission the compressor. On the Diagnostic Mode Parameters page, set Comp manual
control to 3000 rpm.
1. Choose Running Info > Compressor Information and view the Suction pressure and
Discharge pressure to determine whether they are within normal ranges. Check the
EEV suction overheating degree (normal range: 4–15°C) on the Running Info >
Electronic Expansion Valve Information page. The normal discharge pressure range is
listed in Table 6-23.
The normal suction pressure range is 0.7–1.6 MPa, and the ratio (air discharge pressure/air suction
pressure) > 1.4.
Table 6-23 Proper discharge pressure ranges
Outdoor Ambient Temperature
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 from the vacuumizing equipment, and replace the
vacuum pump with a refrigerant cylinder.
c. Slightly open the refrigerant cylinder valve and slightly loosen the connection nut
on the leather hose. Tighten the nut when cold air escapes out of the nut.
d. Put the refrigerant cylinder upside down on an electric balance. Set the reading on
the balance to zero.
e. Start the compressor and let it run for 10 minutes.
f. Open the low-pressure gauge valve and refrigerant steel cylinder valve at the joint
of the gas pipe needle valve, and then charge refrigerant at the gas pipe needle
valve.
Do not move the hose or refrigerant cylinder when charging refrigerant. Otherwise, the
reading on the electronic balance will be affected.
g. Charge liquid refrigerant.Table 6-22 lists the amount of refrigerant to be charged.
h. After the refrigerant is charged, close all pressure gauge valves and the refrigerant
cylinder valve.
i. Remove the refrigerant charging device and install the bonnet.
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