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UPS OPERATING INSTRUCTIONS
EATON Powerware
®
9315 UPS (500–750 kVA) Installation and Operation Manual S 164201244 Rev E www.powerware.com
9-5
9.4 Transferring to Bypass Mode
NOTE In the following step, holding the Mode key switch in the BYPASS position for three seconds
transfers the load to Bypass and shuts down the UPS.
To transfer the critical load to Bypass mode:
1. On the UPS, turn the Mode key switch to BYPASS for one second.
2. Confirm UPS breaker CB4 closes and UPS breaker CB3 opens.
The UPS switches to Bypass mode. If the bypass source is not available, the
power processor remains on and an alarm sounds.
3. On the UPS LCD screen, verify that the On Bypass message appears and the
Bypass Mode indicator illuminates on the control panel
. The UPS system is
now on bypass and UPS power processor remains on.
W A R N I N G
Power is present inside Input/Rectifier and Output/Inverter cabinets.
9.5 Transferring to Normal Mode
To transfer the critical load to Normal mdoe:
1. On the UPS, turn the Mode key switch to NORMAL for one second.
2. Confirm UPS breaker CB3 closes and UPS breaker CB4 opens.
The UPS switches to Normal mode. If the power processor unit is not available,
the system remains on bypass and an alarm sounds.
3. On the UPS LCD screen, verify that the Normal message appears and the
Normal Mode indicator illuminates on the control panel. The UPS system is now
in Normal mode.