INTRODUCTION AND SYSTEM DESCRIPTION
Congratulations on your choice of the Liebert 2U POD™. The Liebert 2U POD provides main- tenance bypass capability as well as power output distribution. The Liebert 2U POD can be used on UPSs in the rack mount or tower configuration.
The Liebert 2U POD provides an isolated path of power for your UPS system for preventive maintenance or service.
System Description
The 2U POD has two modes of operation: UPS (UPS available) and MAINS (maintenance bypass).
•In UPS mode, the power is routed through the UPS system delivering conditioned power to the load, as shown in Figure 1.
Figure 1 UPS mode of operation
Mains
POD
Connected loads
UPS
•In MAINS mode, the power is routed around (bypassing) the UPS system (see Figure 2). Mains power is supplied directly to the load through the 2U POD.
!CAUTION
Battery
Figure 2 MAINS/maintenance bypass mode
Mains
POD
Connected loads
UPS
• The UPS may be turned off and removed without affecting the load. See Figure 3.
Figure 3 2U POD connections
UPS INPUT | Rotary switch | MAINS INPUT |
Connect to load socket on | and power | Connect to mains wall socket. Use |
rear of UPS. Cable supplied. | indicator lamps. | original UPS mains input cord. |
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| UPS | MAINTENANCE BYPASS |
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| AVAILABLE | AVAILABLE |
10A | A | 10A | CIRCUIT BREAKER |
16A | |||
| UPS | MAINS | |
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| CAUTION | CONNECT UPS LINE CORD HERE |
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| IF MAINS LAMP IS ILLUMINATED |
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| MAINTENANCE BYPASS POSITION |
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| MAY BE SELECTED. |
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UPS |
| SWITCH TO UPS POSITION ONLY | MAINS |
| WHEN UPS LAMP IS ILLUMINATED. | ||
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| A+B MAX. 16A |
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B | 10A |
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| Connect UPS |
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| input cord here. |
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Connect loads. | Cable supplied. | Connect loads. | |||
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