Liebert UPS System - Manual (Page 88)

Chapter 7 Troubleshooting
82
Rectifier indicator: If it turns red, that means the rectifier fails;
Battery indicator: If it turns red, that means the battery is abnormal;
Inverter indicator: If it turns red, that means the inverter fails;
Load indicator: If it turns red, that means overload occurs;
Alarm indicator: If it turns red, that means the system fails;
7.2.2 LED indicator of lightning protection device
Fig. 7-1 Lightning protection LED
LED indicators of lightning protection device of 40/60kVA UPS are shown in Fig.7-1.
From bottom to up the LEDs are: Lightning protection indicators of Phase A, B and
C; LED indicators of lightning protection device of 40/60kVA UPS are arranged from
left to right and are indicators of Phase A, B and C respectively. The device is
normal if the indicator illuminates green, and fails if the indicator turns off. The
checking of the indicators is described in Chapter 6.
7.3 Buzzer alarm
If the buzzer sounds 1 second “click” every 2 seconds, that means the system has
normal alarm or the system is abnormal;
If the buzzer sounds continuously, that means the system has serious fault.