Installation

Air

Vents

Battery Cabinets

PPU

PPDM

Figure 12. UPS with PPDM

NOTE You can install additional battery cabinets while the UPS is operating, but confirm the UPS is not in Battery mode (see page 51).

2.Verify the Bypass switch on the PPDM rear panel is in the NORMAL position (see Figure 13).

3.Verify the circuit breaker on all battery cabinets is in the OFF (O) position (see Figure 14).

38

Powerware® 9 Prestige Series User’s Guide (4500/6000 VA) S Rev H www.powerware.com