Liebert UPS System Check the function of the display panel, Switching between operation mode

Chapter 4 Commissioning of UPS

4.3.1 Check the function of the display panel

Press the button “inverter shutdown” for 2 seconds and check that the inverter stops.

Rectifier	Bypass	Battery	Inverter		Load		Alarm
indicator	indicator	indicator	indicator	indicator		indicator

UL33-0400L 2001-11-08			12:50:30
Inv. On	Units	2/4	ID: 1
Out	Language		Chinese
Local	Chinese English
System	Com. Adress Set		1
± BatteryRecords	1
	Date & Time Set
² Settings
	2001£ 11- £ 08-		12:50:30
Input Breaker Closed 11£ 08-			12:09
Ê Byp. Breaker Closed 11£ 08-			12:09
Mains Volt. Abnormal		11£ 08-	12:28	m
Ê UPS in Battery Mode		11£ 08-	12:28
Ö Battery low		11£ 08-	12:50
		11£ 08-	12:12

Emergency

shutdown

Alarm

F1

	Inverter	Inverter
F2
	stare	stop

F3
F4
Fault	Mute
clearing

Fig. 4-7 Display Panel

Press the button “Emergency shutdown” and check that the UPS shuts down Press the button “fault clear” to restart the UPS

Simulate a fault to check the visual and audible alarm functions.

Press “Mute” button to silence the alarm

4.3.2 Switching between operation mode

t

Fig. 4-8 UPS Circuit Breaker Operation

41