Chapter2 Instructions for Installation Preparations 5
Liebert. PEX+Series Precision Air Conditioner User Manual
Figure 2-1 Maintenance space of unit
2.3 Operating Environment
The operation environment of Liebert.PEX+ meets the requirements of GB4798.3-2007.See Table 2-1 for details.
Table 2-1 Operating environment requirement
Item
Requirement
Ambient temperature
Indoor
0°C ~ 40°C, the unit should not run in 32~40
℃
environment for a long time.
Outdoor
Air-cooled:
－
35
℃～＋
45
℃
(Low-temp kit is required when the temperature is below
－
15
℃
)
Protection level (indoor
unit)
IP20
Altitude
<1000m. Above that, derating is required
Operation voltage
range
380V (-10% ~ +15%), 3N~ 50Hz
Note
When the unit is used in the following condition, please contact Emerson:
If the unit voltage exceeds the operating voltage range.
Derating for altitude above 1000m.
Other applications outside of applicable scopes.
2.4 Unpacking And Inspection
2.4.1 Transportation And Movement
Railroad transportation and shipping are the recommended means of transportation. If truck transportation is
unavoidable, choose roads that are less bumpy in order to protect the equipment.
The Liebert.PEX+ series air conditioner is heavy (see Table 3-1 for the weight). It is recommended to use mechanical
equipment such as an electric forklift to unload and move the equipment to the place close to the installation site. If an
electric forklift is used, insert the tines of the forklift below the pallet, as shown in Figure 2-2. Align the tines with the
center of gravity to prevent the equipment from falling over.
1975
900
