[. . . ] Do not place the UPS near excessive humidity, under sunshine, or close to heat-emitting sources. If the UPS is out of order, please unplug power cord and consult your dealer right away. The socket-outlet should be installed near the equipment and be easily accessible. [. . . ] Backup mode: Battery in backup Over Load: If the UPS is overloaded, this light will turn on and the alarm will beep. UPS Cut-Off: Overload or cut-off Battery Level: A bar graph showing how much of the UPS battery is being used. Load Level: A bar graph showing how much of the UPS power is being used. AC input fuse: Contain the fuse to protect the UPS from over current from incoming AC utility. Output receptacles: Connect power cables of computer equipment to these outlets. XP PRO UPS may be installed either in a horizontal or in a vertical position. It is provided with one UPS stand to stabilize the UPS in tower position and two angle flat brackets allow the installation of the UPS as a 19" equipment rack. If there is any obvious damage, immediately report it to the selling dealer or the delivering carrier. If there is no damage to the shipping carton, unpack the unit and inspect the unit for damage. The UPS is designed for installation in a protected environment within a temperature range from 32°F to 104°F and relative humidity of 090% without condensation. Check the identification label to verify the UPS voltage and power rating match the available line voltage and load requirements. Check if the main switch on the UPS front panel is in the off position and insure that the voltage of the AC utility source corresponds to the nameplate on the UPS rear panel. If indicators of LINE-ON & CUT-OFF LCD light on, it means AC power is normal, but UPS is under CUT-OFF status and it will automatically start to charge by itself. Push the main switch, then the Load Level LCD will light on for 2 seconds and CUT-OFF LCD will light off. Be sure to check the Load Level LCD indicator and do not overload it over 100%. To simulate AC failure (simply by disconnecting the AC power) may help to insure whether UPS is in good condition or not. When disconnecting the UPS from AC power, the BACKUP LCD lights on and the alarm is sounding every 3 seconds. When battery approaches low level, alarm will beep every second until auto shut down. [. . . ] Avoid storage temperatures above 25°C (80°F) as battery life is significantly shortened. Every 90 days remove the unit from storage and plug it in for 24 hours to recharge the batteries. Batteries may be damaged if left in storage and not recharge every 90 days. [. . . ]