An uninterruptible power supply (UPS) provides emergency backup power to electrical equipment when main power fails to prevent injuries or data loss. APC is a manufacturer of UPS devices that provides features like surge protection, battery backup, and voltage regulation to protect devices from power issues. The APC Back-UPS Pro 900 UPS has an LCD display, automatic voltage regulation, battery backup outlets and surge-only outlets, data and network surge protection, and a push button circuit breaker for quick recovery from overloads. The troubleshooting guide advises checking the LCD and listening for alarms if on battery power, and contacting the supplier for any internal issues.

1. Uninterruptible Power
Supply

2. What is Uninterruptible
Power Supply?
An uninterruptible power supply, also known UPS, is an electrical apparatus
that provides emergency power to a load when the input power source,
typically mains power, fails.
A UPS is typically used to protect hardware such as computers, data centers,
telecommunication equipment or other electrical equipment where an
unexpected power disruption could cause injuries, fatalities, serious business
disruption or data loss.

3. What is APC?
APC by Schneider Electric,
formerly known as
American Power
Conversion Corporation, is
a manufacturer of
uninterruptible power
supplies, electronics
peripherals and data
center products.

4. APC Back-UPS Pro 900 Product
Features

5. LCD (Liquid Crystal Display) - gives the status of over 20 different utility and
battery backup conditions.
Automatic Voltage Regulation (AVR) - instantly corrects voltage fluctuations so
you can work indefinitely through brownouts and overvoltage.
4 “Battery Backup & Surge Protected” - Outlets keep a CPU, monitor and other
critical devices running when the power goes out or fluctuates outside safe levels.
(Includes one power-saving Controlled outlet).
4 “Surge Only” - Outlets protect printers, faxes or other equipment without
reducing battery capacity. (Includes two power-saving “Controlled” outlets).
Data Line Surge Protection - guards against surges and spikes traveling over
Ethernet and telephone lines.
Push Button Circuit Breaker - enables quick recovery from overloads.

7. Telephone and
Gigabit Ethernet
Surge Protection
Push Button
Circuit Breaker
PowerChute Personal Edition
Four Battery
Backup outlets
with Surge
Protection
Four Surge Protection-
Only Outlets
Power Source Connected
to AC Outlet

8. Troubleshooting
Clients are only allowed to do troubleshooting
from the external of the unit by looking for
LCD Panel as well as listening to audible alarms
i.e. sounding every seconds that indicates low
battery at battery mode in which resolution is
to immediately plugged the input power cord
to a live wall outlet
Everything concerning problems in the inside
of the UPS should be reported/coordinated
immediately to the supplier for processing and
repair.