Powerware 9150 Using the Maintenance Bypass Switch

Operation

		ON
		OFF
UPS ON/OFF Switch		CB2
and Indicators		(Optional)
F1	CB1	External
Battery	Internal	Battery
Neutral	Battery
Fuse

Maintenance

Bypass Switch

Figure 17. UPS Breakers and Switches (Front Panel Removed)

Using the Maintenance Bypass Switch

The Maintenance Bypass switch is standard on all Powerware 9150 models and is used to bypass the UPS during maintenance or servicing. The Maintenance Bypass switch is located behind the front panel. The SERVICE position on the Maintenance Bypass switch allows a service engineer to apply power to the UPS input and verify its operation while the load is powered through bypass.

44 Powerware® 9150 User’s Guide : www.powerware.com