R90 ONLINE USER’S MANUAL
UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion Corporation (Rev 3/7/14)
Page 25
Cold Start Procedure
CAUTION!
Follow these procedures when there is an input AC Utility Failure but the batteries are
normal.
•
Turn on the battery switch.
o
The battery will feed the Auxiliary power board.
•
Trigger the Cold Start Buttons of the modules respectively using the ON BUTTON shown in the
above diagram.
o
When battery is normal, the rectifier starts operation. 30 seconds later the inverter
starts and operates, INV and Output light up.
CAUTION!
Wait for approximately 30 seconds before pressing the ON BUTTON.
Inverter Off
When the Utility is normal, press OFF BUTTON for approximately 1 second until you hear a beep. The
INVERTER LED will extinguish, the BYPASS LED will be illuminated, then the UPS turns to bypass supply.
Disconnecting from Utility
CAUTION!
This procedure should be followed to completely shut down the UPS and the LOAD.
After all power switches, isolators, and circuit breakers are opened, there will be no
output power from the UPS.
•
After the inverter is off, turn the Utility and Battery breakers to “OFF”. The LCD display will
extinguish completely and the fan stops spinning in 60 seconds. If there are external battery
packs connected, turn the Battery breakers on each battery pack to the “OFF” position.
