Eaton Electrical Powerware 9315 - Manual (Page 25)

Starting and Stopping the UPS
4-3 EATON Powerware
®
9315 UPS (200–300 kVA) Operation Manual S 164201036 Rev F powerware.com
When the inverter reaches full voltage, it turns on and supplies power to the
critical 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 load
is immediately supplied by the bypass source in Bypass mode until the inverter
turns on and the UPS transfers to Normal mode. The status indicators on the
Monitor Panel indicate when the UPS is in Bypass mode or Normal mode as
appropriate.
4.1.2 To Shut Down the UPS from Normal Mode
1. Turn the MODE switch to BYPASS.
The UPS switches to Bypass mode. If the bypass source is not available, the power
processor remains on and an alarm sounds.
2. When the transfer is complete (the LCD screen reads “On Bypass”), move the CB1
switch 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 Mode
If the PPU of the UPS is not available and you need to energize the critical load right away,
you can energize the critical load without the benefit of backup. 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 Mode
To perform maintenance or service on the 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.