American Power Conversion 240-320kW 480V manual

Stop/Start UPS and Operating the External Service Bypass

2.5Operating the External Service Bypass Switch (single systems)

2.5.1 Bypassing the Single System UPS

	Single Utility
Utility	Load	Utility 2
	Service Bypass
	Switch
	APC Silcon	Utility 1
	UPS

Dual Utility

Load

Service Bypass

Switch

APC Silcon

UPS

Action				Display shows
1.	Press	on the keyboard
2.	Press	or	on the keyboard until	Bypass operation
				: NO
3.	Press	on the keyboard		Bypass operation
				: YES
4.	Press	on the keyboard
				Lamp indication on
				Bypass Panel

5.Check light indication on the bypass panel

6.Set the external bypass switch (Q003) to position 1

7.Set the output switch (Q002) to position 0

8.Open the front door and press the red OFF button.

The acoustic alarm sounds for 30 seconds*

9.Set the input switch (Q001) to position 0.

Set the bypass input switch (Q010) to position 0 (dual utility).

The red alarm LED below the display lights up and the acoustic alarm sounds for 30 seconds*

*Use the key to reset the acoustic alarm

Green light (H003) above the bypass switch handle (Q003) lights up

Green light (H002) above the output switch handle (Q002) lights up

Only the light (H002) above the output switch handle (Q002) is now on

Display shows

**System OFF**

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User Guide APC Silcon 240-320kW 480V UPS	9