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OPERATION
EATON Powerware
®
9355 UPS (10/15 kVA) User’s Guide S 164201594 Rev B www.powerware.com
70
Initial Startup
Startup and operational checks must be performed by an authorized
Eaton Customer Service Engineer, or the warranty terms as specified on
page 91 become void. This service is offered as part of the sales
contract for the UPS. Contact service in advance (usually a two-week
notice is required) to reserve a preferred startup date.
UPS Startup
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the UPS
installation and initial startup. Risk of electrical shock.
Verify that UPS installation has been carried out correctly and the UPS
ground has been connected.
Maintenance Bypass Startup
To start up the UPS in maintenance bypass:
1. Verify that the maintenance bypass switch is in the BYPASS
position(seeFigure46onpage79).
2. Switch on utility power where the UPS is connected. The load is
now powered by utility power.
To switch to Normal mode from maintenance bypass:
1. If an optional isolation transformer is installed, switch the input
circuit breaker to the ON position.
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.
3. Remove the breaker tie from all battery circuit breakers.
4. Switch all battery circuit breakers to the ON position.
NOTE Wait until the indicator illuminates before proceeding to Step 5; otherwise,
power to the load may be lost.
5. Turn the maintenance bypass switch to the UPS position to return
to Normal mode. The UPS is now powering the load.