BORIS Operating Manual
Page 12
4.6.3
AVR Boost
This indicator comes on to indicate that the UPS is compensating for low voltage
condition. The BORIS automatically corrects high and low voltages so that the loads receive
voltage within the normal range.
To check utility voltage, use line voltage meter. (See Section 4.5)
4.6.4
Overload
This light indicates BORIS is overloaded. If an overload condition lasts for more than 4
seconds, BORIS will sound a constant tone and will be unable to maintain power to the
protected load during a power failure. If the overload occurs while on battery power, BORIS
will protect itself by turning off. Depending on the severity of the overload, BORIS’ circuit
breaker may trip.
4.6.5
On Battery
This light indicates BORIS is running on battery and that the utility voltage (building
power) is not within a safe operating range for the protected load. The light will remain on
for 4 seconds after the utility power is restored. An audible alarm will sound 4 beeps every
30 seconds. Press “On/Test” during on-battery alarms to stop beeping.
4.6.6
Replace Battery
This light indicates BORIS’ internal batteries can no longer sustain sufficient charge and
should be replaced. This light illuminates as the result of BORIS’ self test feature initiated
at “power up” or when TEST or RESET buttons are pressed. The light remains illuminated
until a successful self-test is run. BORIS will emit short beeps for one minute if the battery
fails the self-test. The alarm will repeat every five hours.
