OPTI-UPS MD120L - Manual (Page 8)

Chapter 1 Installation
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1.3 Positioning
1.3.1 Distribution Room
The UPS is designed for indoor installation, which shall be located in a clean environment with
adequate ventilation to keep the environmental temperature within the required specification. The UPS
uses forced convection cooling by internal fans. Cooling air enters the module through ventilation grills
located at the front part of the cabinet and exhausted through grills located in the rear part of the cabinet.
Please do not block the ventilation holes.
If necessary, a system of extractor fans should be installed to aid cooling-air flow. An air filter should
be used when the UPS is to operate in a dirty environment and should be regularly cleaned to maintain
airflow.
Note: The UPS should be installed on a cement surface or other surface that is not
combustible.
1.3.2 Battery Room
The battery will generate some amount of hydrogen and oxygen at the end of charging, so the
fresh air volume of the battery installation environment must meet EN50272-2001 requirements. The
ambient temperature of the battery must be stable. Ambient temperature is a major factor in determining
the battery capacity and life. The nominal operating temperature of battery is 20°C. Operating above this
temperature will reduce the battery life, and operation below this temperature will reduce the battery
capacity. If the average operating temperature of battery is increased from 20ºC to 30ºC, then the
service life of the battery will be reduced by 50%. If the operating temperature of the battery is above
40ºC, then the battery service life will be decreased in exponent rate. In a normal installation, the battery
temperature is maintained between 15°C and 25°C. Keep batteries away from heat sources or air
outlets.
If external batteries are to be used, a battery protection device (a DC circuit breaker) must be
mounted as close as possible to the batteries, and the connecting cables should be as short as possible.
1.3.3 Storing
If the equipment is not installed immediately, it must be stored in a room so as to protect it against
excessive humidity and heat sources. The battery needs to be stored in dry and cool place with good
ventilation. The most suitable storage temperature is 20 ºC to 25ºC.
1.4 Disassembly, Initial Checking and Positioning
Check the packaging first upon the arrival of product to see if there is any damage; open the
packaging to check the equipment; report any such damage to the shipper immediately.
1.4.1 System Packaging:
Open the wooden case first, the open method is shown in fig 1-1: