USE
DESCRIPTION
The purpose of a UPS is to guarantee a perfect supply voltage to the equipment connected to it, both when connected to
and disconnected from the mains. Once connected and powered, the UPS generates a sinusoidal alternating voltage
with stable amplitude and frequency, independent from any sudden changes and/or variations present in the electrical
mains. While the UPS is taking energy from the mains, the batteries are kept charged under the control of the
multiprocessor board. This board also continuously controls the amplitude and frequency of the mains voltage, the
amplitude and frequency of the voltage generated by the inverter, the load applied, the internal temperature and the state
of efficiency of the batteries.
The block diagram below shows the UPS and the individual parts of which it is composed are described.
UPS block diagram
IMPORTANT: Our uninterruptible power supplies are designed and manufactured for a long working life, even in the
harshest working conditions. It is nevertheless important to remember that we are dealing with electrical power
equipment and as such it must be checked on a periodic basis. Furthermore, some components have their own life cycle
and must be checked and replaced if necessary on a periodic basis if their condition makes it necessary: in particular,
the battery, the fans and in certain cases the electrolytic capacitors.
It is therefore advisable to implement a preventive maintenance program, which must be entrusted to specialised
personnel who have been authorised by the manufacturer.
Our Assistance Service is at your disposal to explain the various personalised operations regarding preventative
maintenance.
CAUTION
Maintenance inside the UPS can only be performed by trained personnel.
The UPS is designed to power the load when it is disconnected from the power line. High voltage is present
inside the UPS when the power supply and the battery have been disconnected.
After disconnecting the power line and the battery rack, before intervening on the equipment, the trained
personnel must wait for about ten minutes in order to allow the capacitators to discharge.
Preventive maintenance
Take care to perform the following operations on a periodic basis:
o make sure that the air inlet slits located on the front door and the outlet grilles located on the back are
clean.
o make sure that the UPS is operating correctly. If an alarm message is present, check its meaning in
the manual before contacting the assistance service.