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R91 User's Manual
• After the inverter is off, turn the Utility and Battery breakers to "OFF". The LCD display will extinguish com-
pletely 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/Open" position.
WARNING!
Wait about 5 minutes for the internal DC bus bar capacitors to be completely discharged.
Computer Access
• Connect one end of the RS232 communications cable to a computer and the other end to the RS232 port
on the UPS
• Open the software Muser4000, and choose "system" button
Xtreme Power Conversion Corporation
Uninterruptible Power Supply
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