to the Back-UPS
Avoid placing the Back-UPS in:
• Direct sunlight
• Excessive heat
• Excessive humidity or in contact with fluids
of any type
3 Switch on the
2 Connect Equipment
1 Placement / Power
Plug the Back-UPS into a wall outlet, as shown.
User’s Manual
The rear panel of the Back-UPS consists of the
following elements:
Note: Allow the Back-UPS to charge for a full eight
hours prior to use.
Battery Back Up Outlets (qty. of 3). These
outlets provide battery back-up, surge protection,
and Electro-magnetic Interference (EMI) filtering.
In case of power outage, battery power is
automatically provided to these outlets. Power
(utility or battery) is not supplied to these outlets
when the Back-UPS is switched Off. Connect a
computer, monitor, and external disk or CD-ROM
drive to these outlets.
Press the push-button on Back-UPS front panel.
Surge Only Outlet. This outlet is always On
(when utility power is available) and is not
controlled by the On/Off switch. This outlet does
not provide power during a power outage. Connect
a printer, fax machine or scanner to this outlet.
Observe that the following events occur after pressing
and releasing the push-button:
• The green On-Line indicator flashes.
990-2114 8/01
• The yellow On Battery indicator lights while the
Self-Test is being performed.
• When Self-Test has successfully completed, only
the green On Line indicator will be lit.
Your computer’s power cord.
• If the internal battery is not connected, (see Step 1
above) the green On Line indicator and red
Replace Battery indicator will light. The BackUPS will also emit a chirping sound.
• The Back-UPS charges the internal battery
any time it is connected to a wall outlet.
Status Indicators and Alarms
There are four status indicators (lights) on the front
panel of the Back-UPS (On Line, On Battery,
Overload, and Replace Battery).
Replace the Internal Battery
Overload (red) - is lit whenever
power demand has exceeded
capacity of the Back-UPS.
To replace the internal battery, proceed as follows:
Replacing the battery is a safe procedure. However, small sparks may occur
during the process. This is normal.
Continuous Tone - this alarm is
sounded whenever the Battery Backup
outlets are overloaded.
On Line (green) - is lit whenever utility
power is powering the Battery Backup
On Battery (yellow) - is lit whenever
the battery of the Back-UPS is powering
equipment connected to the Battery
Backup Outlets.
Four Beeps Every 30 Seconds - this
alarm is sounded whenever the BackUPS is running On Battery. Consider
saving work in progress.
Continuous Beeping - this alarm is
sounded whenever a low battery
condition is reached. Battery run-time is
very low. Promptly save any work in
progress and exit all open applications.
Shutdown the operating system,
computer and the Back-UPS.
Place the unit on its side. Slide the battery
compartment cover upward and off of the UPS.
Pull the battery out, exposing the battery terminals
and wires. Disconnect the wires from the terminals.
Circuit Breaker - the circuit
breaker button located on the rear
panel of the Back-UPS will stick
out if an overload condition forces
the Back-UPS to disconnect itself
from utility power. If the button
sticks out, disconnect nonessential equipment. Reset the
circuit breaker by pushing the
button inward.
Replace Battery (red) - is lit whenever the battery is near the end of its useful life, or if the battery is not connected
(see above). A battery that is near the
end of its useful life has insufficient runtime and should be replaced.
Chirps for 1 Minute Every 5 Hours this alarm is sounded whenever the
battery has failed the automatic
diagnostic test.
Slide the new battery into the battery compartment.
Align the battery compartment cover with the grooves
Connect the battery wires to the terminals as follows: in the UPS. Slide the cover down until it locks.
Black wire to Ground (-) terminal
Red wire to Positive (+) terminal
Transfer Voltage Adjustment (optional)
Order Replacement Battery
In situations where the Back-UPS or connected equipment appears too sensitive to input voltage, it may
be necessary to adjust the transfer voltage. This is a simple task requiring use of the front panel
pushbutton. To adjust the transfer voltage, proceed as follows:
1. Plug the Back-UPS into the utility power source. The Back-UPS will be in a Standby Mode (no
indicators lit).
2. Press the front panel pushbutton fully inward for 10 seconds. All indicators on the Back-UPS will
flash to acknowledge going into Programming Mode.
3. The Back-UPS will then indicate its current Lower Transfer Voltage, as shown in the following table.
The typical battery lifetime is 3-6 years (depending on the number of discharge cycles and operating
temperature). A replacement battery can be ordered over the phone from APC, or the battery can be ordered
on-line from the APC web site (see below, a valid credit card is required).
Use When
When ordering, please specify Battery Cartridge RBC2.
Back-UPS Storage
Indicators Lit
Lower Transfer Voltage
160 VAC
Back-UPS frequently goes On Battery due to
low input voltage.
180 VAC (factory default)
196 VAC
Normal power conditions exist.
Storage Temperature
Connected equipment is sensitive to low voltage.
-5o to 30oC (23o to 86oF)
To select 160 volts as the Lower Transfer Voltage, press the pushbutton until 1 indicator is flashing.
To select 180 volts as the Lower Transfer Voltage, press the pushbutton until 2 indicators are flashing.
To select 196 volts as the Lower Transfer Voltage, press the pushbutton until 3 indicators are flashing.
Once in Programming Mode, if the pushbutton is not pressed within 5 seconds, the Back-UPS will
exit the Programming Mode, and all indicators will extinguish.
Before storing, charge the Back-UPS for at least eight hours. Store the Back-UPS covered and upright in a
cool, dry location. During storage, recharge the battery in accordance with the following table:
Recharge Frequency Charging Duration
Every 6 months
8 hours
Every 3 months
8 hours
Please contact APC Technical Support to troubleshoot the unit before returning it to APC.
APC and Back-UPS are registered trademarks of American Power Conversion
All other trademarks are property of their respective owners.
Use the tables below to solve minor Back-UPS installation and operation problems. Consult APC On-line
Technical Support or call APC Technical Support for assistance with problems that cannot be resolved using
this document:
Possible Cause
Back-UPS circuit breaker “tripped”.
Very low or no utility voltage.
Check that the Back-UPS power plug is
securely connected to the wall outlet.
Disconnect non-essential equipment from the
Back-UPS. Reset the circuit breaker (located
on the rear panel of the Back-UPS) by
pushing the circuit breaker button fully
inward until it catches. If the circuit breaker
resets, switch the Back-UPS on and reconnect
the equipment one-at-a-time. If the circuit
breaker trips again, it is likely that one of the
connected devices is causing the overload.
Check the wall outlet that supplies power to
the Back-UPS using a table lamp. If the lamp
bulb is very dim, have the utility voltage
checked by a qualified electrician.
Back-UPS does not power computer/monitor/external drive during an outage
Internal battery is not connected.
Check the battery connections. (See “Connect the Battery” under
“Installation” on the front page of this document.
Computer, monitor or external disk/
CD-ROM drive is plugged into a
Surge Only outlet.
Move computer, monitor, or external drive power cord plug to the
Battery Backup outlets.
Back-UPS operates on battery although normal utility voltage exists
Back-UPS circuit breaker “tripped”.
Frequency Limits (on line)
Stepped Sine Wave
Disconnect non-essential equipment from the
Back-UPS. Reset the circuit breaker (located
on the rear panel of the Back-UPS) by
pushing the circuit breaker button fully
inward until it catches.
Unplug non-essential Battery Backup connected equipment, such as
printers and plug them into Surge Only outlets.
Note: Devices that have motors or dimmer switches (laser printers,
heaters, fans, lamps, and vacuum cleaners, for example) should not be
connected to the Battery Backup outlets.
Back-UPS battery is weak due to
recent outage and has not had time
to recharge.
Charge the battery. The battery charges whenever the Back-UPS is
connected to a wall outlet. Typically, eight hours of charging time are
needed to fully charge the battery from total discharge. Back-UPS
run-time is reduced until the battery is fully charged.
Battery requires replacement.
Replace battery (see Order Replacement Battery). Batteries typically
last 3-6 years, shorter if subjected to frequent power outages or
elevated temperatures.
A red indicator is lit
Battery is not connected properly.
Check the battery connections. Consult "Connect the Battery" under
"Installation" on the front page of this document. It shows how to
access the battery and connect the wires.
The Overload indicator is lit if
equipment connected to the Battery
Backup outlets is drawing more
power than the Back-UPS can
Move one or more equipment power plugs to the Surge Only outlets.
Battery requires replacement.
The battery should be replaced within two weeks (see "Order
Replacement Battery"). Failure to replace the battery will result in
reduced run-time during a power outage.
Red indicators are flashing
Call APC for service.
Replace Battery indicator lit and an alarm sounds when the Back-UPS is turned on
Check the battery connections.
475 VA - 285 W
8 Hours
Operating Temperature
0o to 40oC (32o to 104oF)
Storage Temperature
-5o to 45oC (23o to 113oF)
Operating and Storage
Relative Humidity
0 to 95% non-condensing
Size (H x W x D)
16.5 x 9.2 x 28.5 cm
(6.5 x 3.6 x 11.2 inches)
325 VA - 5.72 kg (12.6 lb)
475 VA - 5.72 kg (12.6 lb)
Shipping Weight
325 VA - 6.72 kg (14.8 lb)
475 VA - 6.72 kg (14.8 lb)
EMI Classification
On Battery Run-Time
EN 55022, IEC 801-2 and 801-4 (level IV), and IEC 801-3 (level III)
325 VA - 14 Minutes typical - desktop computer and 38.1 cm (15 inch) monitor.
475 VA - 18 Minutes typical - desktop computer and 38.1 cm (15 inch) monitor.
Note: If the UPS requires service, do not return it to the dealer. The following steps
should be taken:
Consult the Troubleshooting section to eliminate common problems.
Determine if the circuit breaker is tripped. If the circuit breaker is tripped, reset the breaker and
determine if the problem still exists.
If the problem persists, consult the APC Worldwide Web site ( or call customer
Record the model number of the UPS, the serial number, and the date purchased. Be prepared
to troubleshoot the problem over the telephone with a technician. If this is not successful, the
technician will issue a Return Merchandise Authorization Number (RMA#) and a shipping
If the UPS is under warranty, repairs are free. If not, there is a repair charge.
Pack the UPS in its original packaging. If the original packing is not available, ask customer
service about obtaining a new set. Pack the UPS properly to avoid damage in transit.
Back-UPS is excessively loaded.
325 VA - 195 W
Typical Recharge Time
Back-UPS does not provide expected backup time
Internal battery not connected.
47 - 63 Hz (autosensing)
On Battery Waveshape
The wall outlet that the Back-UPS is Connect the Back-UPS to another wall outlet or have a qualified
connected to does not supply utility electrician check the building wiring.
power to the unit.
Back-UPS failure.
180 - 264 Vac (default setting)
Maximum Load
Back-UPS will not switch on
Back-UPS not connected to an AC
power source.
Input Voltage (on line)
Note: Never use StyrofoamTM beads for packaging. Damage sustained in transit is
not covered under warranty (insuring the package for full value is recommended).
Write the RMA# on the outside of the package.
Return the UPS by insured, prepaid carrier to the address provided by customer service.
The standard warranty is two (2) years from the date of purchase. APC’s standard procedure is to replace
the original unit with a factory reconditioned unit. Customers who must have the original unit back due
to assigned asset tags and set depreciation schedules must declare such a need at first contact with an
APC Technical Support representative. APC will ship the replacement unit once the defective unit has
been received by the repair department, or cross ship upon the receipt of a valid credit card number. The
customer pays for shipping the unit to APC. APC pays ground freight transportation costs to ship the
replacement to the customer.
APC Contact Information
APC Asia Pacific
APC Europe
APC Latin America
APC North America
Technical Support
Copyright © 2001 American Power Conversion. All rights reserved.
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