Xtreme Power Conversion Corporation
R91 User’s Manual
Page 29
Uninterruptible Power Supply
Turn On / Off the UPS
Connecting with Utility
CAUTION!
MAKE SURE PROPER GROUNDING IS IN PLACE.
• Set the Battery Breaker to the “ON/Closed” position according to the user manual.
• Switch “ON/Closed” the Utility Breaker
• Switch “ON/Closed” the UPS
CAUTION!
Check to see if the load is safely connected to the output of the UPS. If the load is not ready to receive power from
the UPS, make sure that it is safely isolated from the UPS output terminals.
The internal fan of the UPS will start spinning; the UPS will perform self-diagnostics. The UPS then goes to bypass,
bypass LED turn Amber, the inverter is now starting. When the inverter is checked “normal”, the UPS goes to Nor-
mal Mode (Green LED) and the load is supplied power by the inverter.
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.
»
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 dia-
gram.
»
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 3 seconds and lift off and you will 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, isola-
tors, and circuit breakers are opened, there will be no output power from the UPS.
