Eaton 9355 Installation And Operation Manual

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Contents

Operation74 Eaton 9355 UPS (20/30kVA) Installation and Operation Manual 164201626—Rev F www.eaton.com/powerquality7. Select the TURN UPS ON option. Press and hold the button for three seconds, until the UPS stopsbeeping.The UPS starts in Battery mode within two minutes and supplies battery power to your equipment.8. Replace the UPS front door.Internal Bypass StartupTo start the UPS when the load is powered by the internal bypass:1. Remove the UPS front door (see page 10).2. Verify that the maintenance bypass switch is in the SERVICE position (see Figure 55 on page 80).3. Switch on utility power where the UPS is connected.4. Switch the UPS input circuit breaker to the ON position.5. If the optional UPS output circuit breaker is installed, switch the breaker to the ON position.6. Wait for the front panel LCD to illuminate.The indicator flashes.7. Switch the UPS battery circuit breaker to the ON position.The indicator stops flashing.The UPS starts and transfers to Bypass mode. This may take up to 1 minute.The indicator flashes while transfering to bypass then goes out with the illuminating to indicatethe UPS is operating in Bypass mode. The load is now powered by utility power.The display indicates On Manual/Maintenance Bypass.8. To switch to Normal mode from internal Bypass mode, rotate the maintenance bypass switch to the UPSposition.The indicator illuminates to indicate the UPS is operating in UPS mode. The load is now powered byUPS.9. Replace the UPS front door.UPS Maintenance Bypass StartupTo start the UPS in maintenance bypass:1. Remove the UPS front door (see page 10).2. Verify that the maintenance bypass switch is in the BYPASS position (see Figure 55 on page 80).3. Replace the UPS front door.4. Switch on utility power where the UPS is connected.The load is now powered by utility power.5. To transfer the load to the UPS, see “Using the UPS Maintenance Bypass Switch” on page 80.