User Guide

UPS MAINTENANCE
EATON Powerware
®
9355 UPS (10/15 kVA) User’s Guide S 164201594 Rev C www.powerware.com
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To transfer the load from the UPS to maintenance bypass:
1. Turn the maintenance bypass switch to the BYPASS position.
The battery circuit breaker trips, and the UPS is now bypassed, with
the load powered by utility power.
2. The UPS automatically shuts down.
To transfer the load from maintenance bypass to the UPS:
1. Turn the maintenance bypass switch to the SERVICE position.
The UPS starts up in Bypass mode, with the load still powered by
utility power.
2. Switch the UPS battery circuit breaker to the ON position.
NOTE Wait until the indicator illuminates before proceeding to Step 3; otherwise,
power to the load may be lost.
3. Turn the maintenance bypass switch to the UPS position to return
to Normal mode. The UPS is now powering the load.