ENGLISH
User’s manual 14 UPS EVO
9. FUNCTIONING
TURNING ON AND OFF
UPS EVO is equipped with a main switch placed on the rear (see figure 4). If this switch is in OFF
position than UPS is completely OFF; else UPS is ON in one of the three functioning modes (LINE
mode, BATTERY mode, BYPASS mode).
If UPS is used daily, it is recommended to leave the main switch always ON and turn ON/OFF the UPS
by the ON and OFF buttons on the front panel to activate/deactivate the INVERTER.
If UPS EVO has to be turn OFF for several days, it is recommended to turn OFF the main switch on the
rear.
Let’s see carefully the consequences of the pressure of buttons ON and OFF.
The UPS is in BYPASS mode (INVERTER is OFF); if the ON button is pressed, after few seconds the
INVERTER starts and after 20 seconds the UPS switches in LINE mode.
If the ON button is pressed when AC utility line is not present, UPS EVO switches on even, and works
in BATTERY mode after about 20 seconds.
If the UPS is ON, press OFF button continuously for approximately 3 seconds to deactivate INVERTER:
if AC utility line is present, then the UPS switches from LINE mode to BYPASS mode; but if the UPS is
working in BATTERY mode, then the INVERTER switches off and consequently there will be no output
power.
WARNING
As showed before, in BYPASS mode, the INVERTER is NOT ACTIVE and UPS EVO doesn’t
work as a UPS, but only as a bypass between input and output of the mains.
In BYPASS mode, the UPS supplies the load only if AC utility line is present. In BYPASS
mode the output load isn’t protected in case of black-out.
LOW BATTERY AND AUTOMATIC RESTART
UPS EVO reaches LOW BATTERY condition whenever, during working in BATTERY mode, the battery
reaches a charge level allowing the connected devices to operate for approximately 1,5 minutes more.
UPS EVO warns operators of LOW BATTERY lighting the BATTERY LOW led, by emitting an acoustic
signal every second, and on LCD display is visualized the message:
“AC: LOSS BAT: LOW ”.
If AC utility power does not come back on within 1,5 minutes, the UPS shuts-down automatically
thus preventing the battery from discharging excessively; Evo stops supplying output power,
deactivates control panel indication and goes to a waiting state. Once AC utility power comes back on,
it restarts automatically (like if you press the ON button) and after 20 seconds it goes back to work
in LINE mode.
After a complete discharge, the UPS needs 10 hours to recharge completely the batteries. The UPS
recharges batteries automatically if it works in LINE mode or in BYPASS mode.