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Installation
11
2.3.2 Environmental Considerations
Before installing the Liebert
®
APM
™
, verify that the UPS room satisfies the environmental conditions
stipulated in 11.2 - UPS Environmental, paying particular attention to the ambient temperature
and air exchange system.
The UPS unit should be installed in a cool, dry, clean-air environment with adequate ventilation to
keep the ambient temperature within the specified operating range 32°F to 104°F (0°C to 40°C).
For optimal UPS and battery system performance and service life, maintain the operating
temperature within the range of 74-80°F, (23-27°C).
The Liebert APM is cooled by internal fans. Cooling air enters the unit through the front of the unit
and is exhausted out the back. To permit proper air flow and prevent overheating, do NOT block or
cover the ventilation openings or blow air down onto the unit. The UPS requires 24 in. (610mm)
ventilation clearance above the unit and 12" (305mm) behind the UPS.
See Table 46 for details on heat dissipation.
Battery Location
Temperature is a major factor in determining battery life and capacity. Battery manufacturers
recommend an operating temperature of 77°F (25°C). Ambient temperatures warmer than this reduce
battery life; temperatures below this reduces battery capacityv. In a typical installation, battery
temperature should be maintained between 74°F and 80°F (23-27°C). Batteries should be placed
where there are no main heat sources or air inlets to prevent portions of batteries from being either
much warmer or much cooler than other parts of the batteries.
2.4 Considerations in Moving the Liebert APM
Ensure that the UPS weight is within the designated surface weight loading (lb./ft
2
or kg/cm
2
) of any
handling equipment. See Table 34 for weights of various units.
The Liebert APM may be rolled on its casters for short distances only. For longer distances, move the
UPS with a forklift or similar equipment to ease the relocation and to reduce vibration.
The optional battery cabinets should be moved with a forklift or similar equipment.
Final Positioning
When the equipment has been finally positioned, ensure that the adjustable stops are set so that the
UPS will remain stationary and stable (see 6.0 - Installation Drawings).
The Liebert APM and its auxiliary cabinets must be installed on a concrete or equivalent, non-
resilient floor.
!
WARNING
Risk of moving heavy unit. Can cause property damage, injury and death.
Ensure that any equipment that will be used to move the Liebert APM has sufficient lifting
capacity. The Liebert APM’s weight ranges from 1100 to 2750 lb. (500 to 1250kg). See
Table 34 for details.
The UPS presents a tipping hazard. Do not tilt the Liebert APM more than 15 degrees from
vertical.
The UPS is fitted with casters—Take care to prevent movement when unbolting the
equipment from its shipping pallet. Ensure adequate personnel and lifting equipment are
available when taking the Liebert APM off its shipping pallet.
!
WARNING
Risk of heavy unit tipping over while being moved. Can cause property damage, injury and
death.
The casters are strong enough for movement across even surfaces only. Casters may fail if
they are subjected to shock loading, such as being dropped or rolled over holes in the floor or
obstructions. Such failure may cause the unit to tip over, injuring personnel and damaging
the equipment.
Care must be taken when maneuvering units fitted with batteries. Keep such moves to a
minimum. For further information, see Battery Cabinet Precautions on page 3.