American Power Conversion 250/450 user manual Installation, Operating Instructions, Storage

APC PowerStack 250/450

Uninterruptible Power Supply User’s Manual

990-5017 Revision 1 7/98

Installation

English

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

Inspection

Inspect the APC PowerStack 250/450 Uninterruptible Power Supply (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.

Battery Connection

Before beginning installation of the UPS, please follow the Battery Connection instructions on the front of the unit, or follow the steps under Replacing the Battery Pack.

Placement

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

Rack Mounting

The UPS comes with standard 19" (46.5 cm) rack mount brackets. It is supplied with four (4) screws to attach the mounting brackets (ears) to the chassis.

Select a rack location with adequate air flow that is free from excessive dust. Ensure that the air vents on the sides of the UPS are not blocked. Do not operate the UPS where temperature or humidity are outside the limits in the Specifications section of this manual.

Wall Mounting

The brackets on the UPS can be rotated 90 ° for wall mounting. Remove the screws, rotate the brackets, and insert the screws in the appropriate holes.

Wall-mount the unit with the controls towards or at the top, not at the bottom of the unit .

The illustrations above show the proper positions for wall mounting the unit

Warning!

Do not mount the unit on the wall as shown in the illustrations at left. Doing so could result in a safety hazard.

Rear View

Once the UPS is mounted, please follow the installation instructions in the Smart-UPS Quick Reference Guide.

Desktop Use

This UPS is provided with four adhesive-backed rubber “feet” for desktop use. Attach the feet to the bottom of the unit and remove the ears to use it on a desktop.

The recommended placement of the feet is shown by a small + on the bottom corners of the unit:

Check the Site Wiring Fault Indicator

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

Computer Interface Port

The interface port is used for communicating with the UPS. See enclosed documentation for details.

Connect the Battery Pack

The UPS is shipped with the battery pack disconnected. To connect the battery pack, follow the procedure in Replacing the Battery Pack, below.

Charge the battery pack

The UPS charges its battery pack whenever it is connected to utility power. The battery pack will charge fully during the first 4 hours of normal operation. Do not expect full battery back-up runtime during this initial charge period.

Operating Instructions

Switch On — Switch Off On Battery

Cold Start

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 green 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. Automatic self-test eases maintenance requirements by eliminating the need for periodic manual self- tests.

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

If the UPS turns off during the self-test and emits a fading tone, the batteries are not connected properly.

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

During on-battery operation, the yellow 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 pack runs low, the UPS beeps continuously until the UPS shuts down from battery pack exhaustion or returns to on-line operation, if the utility power returns before the battery pack is exhausted..

Replace Battery

If the battery pack fails a self-test, the UPS emits short beeps for one minute and the red 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 pack passes the self-test.

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 pack.

· Press and hold the on/off/test button until the UPS emits a constant tone.

·Release the on/off/test button during the tone to start the UPS.

Overload

When loads exceed the UPS’s capacity, the red 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.

Storage

Storage Conditions

Before storing, charge the UPS for at least 8 hours. Cover the UPS and store it lying flat in a cool, dry location, with its battery pack fully charged.

Extended Storage

At -15 to +30 °C (+5 to +86 °F), charge the UPS’s battery pack every 6 months.

At +30 to +45 °C (+86 to +113 °F), charge the UPS’s battery pack every 3 months.