Commissioning The Cooling System - Huawei FusionModule500 User Manual

FusionModule500 Smart Mini Data Center
User Manual
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5.2.3 Commissioning the Cooling System

Prerequisites
Check that the indoor and outdoor units have been powered on.
Before starting the compressor after power-on, ensure that the electric heating
belt of the crankcase has been preheated for more than 12 hours.
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Context
Convert the components that cause partial resistance loss such as elbows into the
length equivalent to that of straight pipes, and add the equivalent length to the
length of the straight pipe between the indoor and outdoor units to obtain the
total one-way pipe length (L). L should be less than or equal to 60 m. If L exceeds
60 m, contact Huawei technical support.
Table 5-2 Equivalent length of pipe components
Pipe Outer Diameter
3/8 inch (9.52 mm)
2/9 inch (6 mm)
For a 5 U rack-mounted smart cooling product with a low-temperature
component, the amount of refrigerant to be filled is the amount of refrigerant to
be filled for a 5 U rack-mounted smart cooling product without a low-temperature
component plus 2 kg.
If the pipe between the indoor unit and outdoor unit is longer than 10 m, add
refrigerant to the system to ensure normal system operation. The following table
lists the amount of refrigerant to be added for each 1 m increase in the length of
the pipe connecting the indoor and outdoor units.
Issue 02 (2020-12-25)
CA UTION
After the smart cooling product is shut down, the temperature of the smart
module increases and data running is affected. Exercise caution when
performing this operation.
NO TICE
If the one-way indoor unit pipe is longer than 10 m, you need to charge
refrigerant during commissioning.
Before charging refrigerant, ensure that air is exhausted from the gas pipe
connected to the refrigerant cylinder.
Copyright © Huawei Technologies Co., Ltd.
90-degree Bend
0.3 m
0.2 m
5 Power-On Commissioning
180-degree Bend
0.6 m
0.4 m
158