APC 420/620 - Manual

APC Smart-UPS 420/620

User’s Manual

990-7041 Revision 1 9/97

Installation and Initial Start-Up

To obtain warranty coverage, please fill out and
return the warranty registration card now.

Inspection

Inspect the UPS upon receipt. Notify the carrier
and dealer if there is damage. The packaging is
recyclable; save it for reuse or dispose of it
properly.

Placement

Install the UPS in a protected area that is free of
excessive dust and has adequate air flow. Do
not operate the UPS where the temperature and
humidity is outside the specified limits.

Warning: Changes or modifications to this
unit not expressly approved by the party
responsible for compliance could void the
warranty.

Connect to Utility

Check the Site Wiring Fault Indicator

Caution: If the site wiring fault indicator
lights, get a qualified electrician to correct
the building wiring.

Connect the Loads

Plug the loads into the output connectors on the
rear of the UPS. To use the UPS as a master
on/off switch, make sure that all of the loads are
switched on.

Caution: Do not connect a laser
printer to the UPS.

Connect Telephone/Network Surge
Suppression (Optional)

Connect a single line telephone or a

10Base-T/ 100Base-Tx network cable into the
RJ-45/RJ-11 telephone/network surge protection
IN jack on the back of the UPS. Connect from
the OUT jack with telephone cable (supplied) or
network cabling (not supplied) to a fax modem or
network port.

Connect Computer Interface
Port (Optional)

PowerChute®

plus

power management software

is included with this UPS. Connect the supplied
interface cable to the 9-pin computer interface
port on the back panel of the UPS. Connect to
the computer. See software documentation for
installation instructions.

Charge the battery

The UPS charges its battery whenever it is
connected to utility power. The battery will

charge fully during the first 4 hours of normal
operation. Do not expect full runtime during this
initial charge period.

Operating Instructions

Switch On — Switch Off

With the UPS plugged in, press and
release the on/off/test button to supply
power to the loads.

The loads are immediately powered while the
UPS performs a self-test. Press and release the
button again to turn off power to the loads. It may
be convenient to use the UPS as a master on/off
switch for the protected equipment.

The on-line LED illuminates when the
UPS is supplying utility power to the loads.

Self-test

The UPS performs a self-test automatically when
turned on, and every two weeks thereafter (by
default). Automatic self-test eases maintenance
requirements by eliminating the need for periodic
manual self-tests.

During the self-test, the UPS briefly operates the
loads on-battery. If the UPS passes the self-test,
it returns to on-line operation.

If the UPS fails the self-test it
immediately returns to on-line operation
and lights the replace battery LED.

The loads are not affected by a failed test.
Recharge the battery overnight and perform the
self-test again. If the replace battery LED is still
on, replace the battery using the

Replacing the

Battery

procedure.

On Battery

During on-battery operation, the on-
battery LED illuminates and the UPS
sounds an audible alarm consisting of 4

beeps every 30 seconds. The alarm stops when
the UPS returns to on-line operation.

Low Battery

When the UPS is operating on-battery and the
energy reserve of the battery runs low, the UPS
beeps continuously until the UPS shuts down
from battery exhaustion or returns to on-line
operation.

Overload

When loads exceed the UPS’s capacity,
the overload LED illuminates and the
UPS emits a sustained tone. The alarm

remains on until the overload is removed.
Disconnect nonessential load equipment from
the UPS to eliminate the overload.

If the overload is severe, the input circuit breaker
may trip (the resettable center plunger of the
circuit breaker pops out). Disconnect
nonessential load equipment from the UPS to
eliminate the overload and press the plunger
back in.

If there is AC power and the circuit breaker does
not trip during overload, the loads are still
powered. If the circuit breaker trips or the UPS
attempts to transfer to battery, the loads’ power
will be shut off. Turn the UPS off then back on
to power the loads.

Replace Battery

If the battery fails a self-test, the UPS
emits short beeps for one minute and
the replace battery LED illuminates.

The UPS repeats the alarm every five hours.
Perform the self-test procedure to confirm
replace battery conditions. The alarm stops
when the battery passes the self-test.

Shutdown Mode

If there is no power, the host connected to the
computer interface port can command the UPS
to shut down. This is normally done to preserve
battery capacity after a controlled shutdown of
the protected system. In shutdown mode the
UPS stops supplying power to the load. The
online and overload LED indicators flash
alternately or, if the UPS has shutdown due to a
low battery, the UPS will beep once every 4
seconds for approximately 16 seconds. When
line power is restored, the UPS will return to on-
line operation.

Cold Start

Note: Cold start is not a normal operating
condition.

When the UPS is off and there is no utility
power, it is possible to cold start the UPS to
power the loads from the UPS’s battery.

•

Press and hold the on/off/test button
until the UPS begins beeping.

•

Release the on/off/test button

during

the

beeping to start the UPS.

Storage

Storage Conditions

Store the UPS covered and upright in a cool, dry location, with its battery fully
charged. Before storing, charge the UPS for at least 4 hours. Disconnect any
cables connected to the computer interface port to avoid unnecessarily
draining the battery.

Extended storage

At -15 to +30

°

C (+5 to +86

°

F), charge the UPS’s battery every 6 months

At +30 to +45

°

C (+86 to +113

°

F), charge the UPS’s battery every 3 months.