Installation
ON Series m UPS User Instruction Manual
5
1. Lay the UPS on its right side.
2. Remove and retain the two Phillips head screws
at the bottom front of the unit that secure the
battery access door (fig. 1).
3. Carefully open the access door, then slide the
batteries out of the unit.
WARNING:
Do not contact the exposed battery
terminals due to the presence of electrical charge.
4. The frequency selector switch, located at the top
of the UPS battery access panel, can be set to the
desired frequency using a small, standard
screwdriver or similar tool (fig. 1).
fig. 1: Frequency Selector Switch
5. Circle the selected frequency on the UPS label
for later reference.
6. With the battery terminals toward the rear of the
unit, slide the battery (pack) into the UPS. Make
sure the battery wires retract without binding.
7. Close the battery access door and secure with the
(2) screws removed in step 2. Return the desktop
UPS to the upright position.
Connecting External
Battery Enclosure(s)
For additional runtime, some ON Series m UPSs can
use extra batteries housed in a separate enclosure.
Use only ONEAC model ONMXBC-217. The UPS
power module and battery enclosure(s) are shipped
separately.
1. Connect the battery cable from the closest
battery enclosure to the external battery
receptacle on the UPS, see fig. 2.
