Delta 1KVA User Manual page 18

Fig 4-4 On-Battery Mode
OVERLOAD: If the load exceeds the UPS rating, after a limited period, the
overload LED will light on and buzzer continuous beeping to alarm the user.
The user should unplug some uncritical loads to release the overload
condition. Shown as fig 4-5.
Fig 4-5 Overload and UPS turn into Bypass
BATTERY REPLACE: This LED function is to alert user that the batteries
should be replaced. When the microprocessor in the UPS detects a battery
fault, the UPS alarm will give out three beeps. Each beep lasts for 0.5
seconds and interrupted by an interval of 0.5 seconds. After the initial 3 beeps,
the alarm will continue to sound every one hour. Shown as fig 4-6.
Fig 4-6 Battery Replace
1 6
SHEET 18 TO 19