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UPS Operating Instructions
6.3.10 Single UPM Shutdown
To shut down a single UPM:
1.
Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.
2.
Tap the MODULES CONTROLS tab on the secondary Control menu navigation bar. The UPM Select
screen is displayed.
3.
On the UPM Select screen, select the UPM to shutdown. The UPM Control Screen is displayed.
4.
Tap the SHUT DOWN MODULE button.
The UPM status indicates SHUTDOWN. The power module is turned off. The remaining UPMs continue to
supply the critical load.
Logic power remains on.
6.3.11 Single UPM Restart
To restart a single UPM from a shutdown state:
1.
Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.
2.
Tap the MODULES CONTROLS tab on the secondary Control menu navigation bar. The UPM Select
screen is displayed.
3.
On the UPM Select screen, select the UPM to start. The UPM Control Screen is displayed.
4.
Tap the START MODULE button.
The UPM rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready to transfer
to the Double Conversion mode and supply the critical load.
6.3.12 UPS and Critical Load Shutdown
To perform maintenance or service on the critical load, shut down power to the load:
1.
Turn off all equipment that is being powered by the UPS.
2.
Perform the Load Off procedure in paragraph 6.3.15.
The inverter and bypass switchgear open, and the power module is turned off.
3.
Perform the battery charger off procedure in paragraph 6.3.13.
The rectifier and battery switchgear open.
Power is present inside the UPS cabinet until the upstream input feeder circuit breakers and
battery breakers are opened.
4.
Open the UPS front door by lifting the latch from the bottom and turning to the right (counterclockwise)
and swing the door open.
5.
Open the UPS input breaker.
6.
If the UPS contains a battery breaker, open the UPS battery breaker.
7 .
Close the door and secure the latch.
8.
Open the UPS input feeder circuit breaker.
9.
If dual feed, open the UPS bypass feeder circuit breaker.
10. If IBCs are installed, open all battery breakers.
6-22
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
WARNING
www.eaton.com/powerquality
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