Apc 600 User Manual download pdf (Page 15)

4.3.2 Enable UPS

Move the UPS Enable switch to the on ( I ) position.

When shipped, this switch is in the off position to

prevent accidental activation of the UPS. The batteries

will not appreciably discharge if this switch is left on.

Allow the UPS to charge its battery for at least 8 hours before use. The UPS

recharges its battery whenever the utility voltage is normal and UPS Enable

switch is on. While the UPS was shipped from the factory with the batteries

in a fully charged state, the batteries may lose some charge during shipping

and storage. You may use the UPS immediately without charging but the

Low Battery indicator may light, and backup time may be reduced until the

battery has an opportunity to charge.

4.4 Plug loads into UPS

Plug all loads to be protected into the UPS. Do not exceed the UPS’s

capacity as given in Section 9.3. Once switched on, the UPS monitors and

displays the size of the applied load when you press the Test button.

Note: Do not plug laser printers into this UPS. Laser printers

can draw a considerable amount of power, which reduces

the available backup time and, in some cases, causes the

UPS to signal an overload.

4.5 Check site wiring fault indicator—100, 120 Vac versions only

After you connect the loads to the UPS and turn on

the UPS, the Site Wiring Fault indicator on the UPS’s

rear panel should be checked. It will light when the

UPS is plugged into an improperly wired wall outlet. Wiring faults de-

tected include missing ground, hot-neutral polarity reversal, and over-

loaded neutral circuit.

Note: If the UPS indicates a site wiring fault, a qualified electrician should be

summoned to correct the building wiring.

4.0 Installation

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Apc 600 User Manual Page 15