Battery over charge protection: when in AC mode, UPS automatically enter the charge mode, battery
testing system will automatically detect the battery state of charge, when battery full completely, the
charge will be automatically closed system to ensure that the service life of batteries, energy
conservation.
Short circuit protection: When UPS in battery mode and there is shock or short-circuit, UPS will output
limited currency, protecting the UPS. (When in mains mode, the UPS will be protected by input fuse firstly
and then transfers to the battery mode.)
Lock phase
In AC mode, the UPS system automatically tracks AC phase and ensures that the output wave form of the
inverter is the same with AC voltage wave form, in this way, it reduces the peak pulse and surge voltage
and minimizes the interference and damage to the equipment.
Detective input frequency
When it is connected to AC, the frequency is automatically set to 50Hz or 60Hz in accordance with AC.
4. Important Safety Warning
(Save these instructions)
CAUTION! To prevent the risk of fire or electric shock, install in a temperature and humidity controlled
indoor area free of conductive contaminants. (See the specifications for the acceptable temperature and
humidity range.)
CAUTION! To reduce the risk of overheating the UPS, do not cover the UPS’ cooling vents and avoid
exposing the unit to direct sunlight or installing the unit near heat emitting appliances such as space
heaters or furnaces.
CAUTION! Do not attach non-computer-related items, such as medical equipment, life-support
equipment, microwave ovens, or vacuum cleaners to UPS.
CAUTION! Do not plug the UPS input into its own output.
CAUTION! Do not allow liquids or any foreign object to enter the UPS. Do not place beverages or any
other liquid-containing vessels on or near the unit.
CAUTION! In the event of an emergency, press the OFF button and disconnect the power cord from the
AC power supply to properly disable the UPS.
CAUTION! Do not attach a power strip or surge suppressor to the UPS.
CAUTION! If the UPS is with metal chassis, for safety purpose, grounding is a must during UPS
installation in order to reduce leakage current below 3.5mA.
Attention hazardous through electric shock. Also with disconnection of this unit from the mains,
hazardous voltage still may be accessible through supply from battery. The battery supply should be
therefore disconnected in the plus and minus pole at the quick connectors of the battery when
maintenance or service work inside the UPS is necessary.
CAUTION! Servicing of batteries should be performed or supervised by personnel knowledgeable of
batteries and the required precautions. Keep unauthorized personnel away from batteries.
CAUTION! When replacing the batteries, use the same number and type of batteries.
CAUTION! Internal battery voltage is 12V dc. Sealed, Lead-acid, 6-cell battery.
CAUTION! Do not dispose of batteries in a fire. The battery may explode. Do not open or mutilate the
battery or batteries. Released electrolyte is harmful to the skin and eyes.
CAUTION! Unplug the UPS prior to cleaning and do not use liquid or spray detergent.
