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CAUTION
To avoid possible equipment damage or personal injury, assume that FERRUPS’ terminals or receptacles
may have AC voltage present any time AC input voltage or DC battery voltage is supplied. FERRUPS can
provide output voltage from its batteries even when there is no AC input voltage. When AC input voltage
is present, FERRUPS can provide output voltage even when its batteries are disconnected. Always
disconnect the AC input source AND disconnect or turn off DC (see Section 308) to make sure there will
be no UPS output voltage. To reduce the risk of electric shock, install the UPS in a temperature-controlled
indoor area free of conductive contaminants.
1
Turn off the equipment you want the FERRUPS to protect.
2
If your FERRUPS has an input plug, make sure the
AC input power is off at the service panel. Then,
plug in the UPS. If the plug and your outlet
(receptacle) do not match, ask your electrician to
install the outlet you need.
If your FERRUPS does not have a plug, your
electrician should have installed your UPS and
connected your protected equipment using the
Installation Manual. Make sure your AC Disconnect
Switch and the UPS On/Off switch are both off at
this time.
3
To switch on the DC (battery power), follow these
steps:
a. Unlock the lock in the center of the UPS front
panel, and lower the panel.
b. If there is a DC switch with a precharge
button behind the panel, press the precharge
button for a few seconds; then, turn on the
switch. If there is a switch but no precharge
button, turn on the switch.
There may not be
a DC switch behind the panel.
Close the
panel.
c. If your UPS has separate battery cabinets,
turn on the DC switch at each battery cabinet.
