INDICATOR LAMPS

MAINS Indicator Lamp

This orange lamp is illuminated when mains power is present (see Figure 7). It signals that you may transfer the loads to maintenance bypass (MAINS mode) operation via the rotary switch. During a mains power outage, this lamp will be off and the UPS will supply battery back-up power to the connected loads.

UPS Indicator Lamp

This green lamp is illuminated when there is output power available from the UPS (see Figure 7). It signals that it is safe to transfer the connected loads from mains power back to UPS output power.

Figure 7 Indicator lamps on 2U POD

Green lamp:

Orange lamp:

Output power available from UPS

MAINS power present

UPS

MAINTENANCE BYPASS

AVAILABLE

AVAILABLE

CIRCUIT BREAKER

16A 250V-/T

UPS MAINS

CONNECT UPS LINE CORD HERE

Rotary switch

7

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Liebert 2U user manual Indicator Lamps, Mains Indicator Lamp