Starting and Stopping the UPS4−3EATON Powerware ® 9315 UPS (300–500 kVA) Operation Manual 164201119 Rev F www.powerware.comWhen the inverter reaches full voltage, it turns on and supplies power to thecritical load. It takes less than one minute for the UPS to achieve Normal mode.If a bypass source is available when you turn the START switch on, the critical loadis immediately supplied by the bypass source in Bypass mode until the inverterturns on and the UPS transfers to Normal mode. The status indicators on theMonitor Panel indicate when the UPS is in Bypass mode or Normal mode asappropriate.4.1.2 To Shut Down the UPS from Normal Mode1. Turn the MODE switch to BYPASS.The UPS switches to Bypass mode. If the bypass source is not available, the powerprocessor remains on and an alarm sounds.2. When the transfer is complete (the LCD screen reads On Bypass"), move the CB1switch to OFF.The bypass source supplies the critical load and the power processor de-energizes.The Bypass mode indicator illuminates on the Monitor Panel.4.1.3 To Start the UPS in Bypass ModeIf the power processing unit (PPU) of the UPS is not available and you need to energizeyour critical load right away, you can energize your critical load without the benefit ofbackup. To turn the UPS on in Bypass mode:1. Turn the MODE switch to BYPASS. (The remaining switches can be in any position.)2. Turn the START switch to the right momentarily.Power to the critical load is supplied by the bypass source. No backup is available.4.1.4 To Shut Down Power to the Critical Load While in Bypass ModeTo perform maintenance or service on your critical load, you must shut it down first:1. Turn off all equipment that is being powered through the UPS.2. Press the LOAD OFF button on the Monitor Panel.
