FusionModule800 Smart Small Data Center
Installation Guide (Six Fans)
6 Power-On Commissioning
Issue 10 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
272
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
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
Discharge 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 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.
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.
