Contents  4 
Attaching the tower conversion stands .............................................................................................. 35 
Continuing the ERM installation ....................................................................................................... 37 
Installing the extension bars (if included) .................................................................................................... 38 
Connecting and securing the power cords .................................................................................................. 39 
UPS operations ........................................................................................................................... 40 
Modes of operation ................................................................................................................................. 40 
Standby mode .............................................................................................................................. 40 
Operate mode .............................................................................................................................. 40 
Configure mode ............................................................................................................................ 41 
Battery mode ................................................................................................................................ 41 
Auto-Bypass mode ......................................................................................................................... 41 
Operating the UPS front panel controls ...................................................................................................... 41 
Configuring the UPS ................................................................................................................................ 42 
Initiating a self-test ................................................................................................................................... 43 
Silencing an audible alarm ....................................................................................................................... 44 
Verifying the REPO port connection ........................................................................................................... 44 
Powering down the UPS ........................................................................................................................... 44 
Maintenance .............................................................................................................................. 45 
Removing the UPS front bezel ................................................................................................................... 45 
Removing the ERM front bezel ................................................................................................................... 45 
Replacing the batteries ............................................................................................................................. 45 
Important battery safety information ................................................................................................. 46 
Battery care and storage guidelines ................................................................................................. 46 
Determining when to replace batteries .............................................................................................. 46 
Obtaining new batteries ................................................................................................................. 47 
UPS battery replacement procedure ................................................................................................. 47 
Testing the new battery module ....................................................................................................... 48 
Replacing the UPS ................................................................................................................................... 49 
Replacing the ERM .................................................................................................................................. 49 
Replacing the UPS option card .................................................................................................................. 49 
Updating the UPS firmware ...................................................................................................................... 50 
Configuring a USB to serial converter ............................................................................................... 50 
Reassigning the USB COM ports ..................................................................................................... 51 
Power management .................................................................................................................... 53 
Power Protector software .......................................................................................................................... 53 
Troubleshooting .......................................................................................................................... 55 
LED troubleshooting ................................................................................................................................. 55 
UPS is in Auto-Bypass mode...................................................................................................................... 56 
UPS is in Converter Off mode ................................................................................................................... 57 
General alarm condition .......................................................................................................................... 57 
Bypass is out of range .............................................................................................................................. 58 
Battery condition ..................................................................................................................................... 58 
UPS is on battery ..................................................................................................................................... 58 
Input voltage is out of range ..................................................................................................................... 58 
Overtemperature condition ....................................................................................................................... 59 
Internal UPS fault condition ....................................................................................................................... 59 
REPO condition ....................................................................................................................................... 59 
Site wiring condition ................................................................................................................................ 59 
Overload condition ................................................................................................................................. 59 
Checksum failure error ............................................................................................................................. 60 
UPS does not start ................................................................................................................................... 60