Eaton Powerware 9355 - Initial Startup; UPS Startup

UPS MAINTENANCE
EATON Powerware
®
9355 UPS (20/30 kVA) Installation and Operation Manual S 164201626 Rev B www.powerware.com
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Single UPS Bypass
To transfer the load from the UPS to maintenance bypass:
1. Remove the UPS front door (see page 10).
2. Turn the maintenance bypass switch to the BYPASS position.
The input and battery circuit breakers trip, and the UPS is now bypassed, with
the load powered by utility power.
3. Replace the UPS front door.
4. The UPS automatically shuts down.
To transfer the load from maintenance bypass to the UPS:
1. Remove the UPS front door (see page 10).
2. Turn the maintenance bypass switch to the SERVICE position.
The UPS starts up in Bypass mode, with the load still powered by utility power.
NOTE Wait until the indicator illuminates (approximately two minutes ) before proceeding to Step 4;
otherwise, power to the load may be lost.
3. Switch the UPS input and battery circuit breakers to the ON position.
4. Turn the maintenance bypass switch to the UPS position to return to Normal
mode.
The UPS is now powering the load.
5. Replace the UPS front door.