Chapter 2 Mechanical Installation 11
Liebert NXC 30kVA And 40kVA UPS User Manual
Method of raising one foot: as shown in Figure 2-5, first loosen the nut (installed in factory) from bottom to top, and
remove the foot fixing piece (reserve it), then rotate the foot to raise it for avoiding affecting the slide of the castor.
Figure 2-5 Schematic diagram for raising the foot
2.4 Initial Inspection
Before installing the UPS, carry out the following inspections:
1. Ensure that the environment of the UPS equipment room meets the environmental requirement specified in the
product technical specifications, especially the ambient temperature, ventilation conditions, and the dust situations.
2. Unpack the UPS and battery under the guidance of authorized service engineer. Visually inspect whether the inside
and outside of the UPS and battery have any transportation damage. If there is any damage, report to the carrier
immediately.
3. Verify the UPS label and confirm the correctness of the UPS. The UPS label is attached on the back of the door. The
UPS model, capacity and main parameters are marked on the label.
2.5 Environmental Requirement
2.5.1 UPS Location Selection
The UPS should be located in a cool, dry, clean-air indoor environment with adequate ventilation, and should be
located on concrete or other nonflammable and flat surfaces. The ambient environment should be free of conductive
powder (such as metallic powder, sulfide, sulfur dioxide, graphite, carbon fiber, conductive fiber, etc.), acid mist or
other conductive media (strongly ionized substances). The environment specifications should comply with relevant
international standard & specifications and the operating range (see Table 11-2) specified in this manual.
The UPS uses forced cooling by internal fans. Cooling air enters the UPS through the ventilation grills at the front of
the cabinet and exhausted through the ventilation grills at the back of the cabinet. Do not obstruct the ventilation holes
(ventilation grills). The rear of the UPS should be kept a distance at least 200mm from the wall to avoid blocking the
UPS heat dissipation, thus reducing the UPS internal temperature and improving the UPS life.
If necessary, install indoor extractor fans to aid cooling-air flow to avoid room temperature buildup. Air filters (optional)
should be used when the UPS is to operate in a dirty environment.
Note 1: When the battery cabinet is installed near the UPS, the maximum allowable ambient temperature is dependent
on the battery rather than the UPS.
Note 2: If the UPS is working in ECO mode, the power consumption will be less than that in Normal mode. Proper air
conditioning system shall be selected according to the normal operating mode.
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