APC 990-2233A, 2400 VA Display Panel Functions, On Battery Operation, Utility Voltage Measurement

Operation

Display Panel Functions

Feature	Feature Title	Function
Button
	Power On	Press this button to turn on the UPS. Continue reading for additional
		capabilities.
	Power Off	Press this button to turn off the UPS output.
		NOTE: The battery will continue to charge and the fans will continue to run

while the UPS is connected to the utility.

Cold Start	When there is no utility power and the UPS is off, press and hold the	button
	to power up the UPS and connected equipment.
	NOTE: The UPS will emit two beeps. During the second beep, release the button.
Self-Test	Automatic: The UPS performs a self-test automatically when tuned on, and
	every two weeks thereafter (by default). During the self-test, the UPS briefly
	operates the connected equipment On Battery.

Manual: Press and hold the button for a few seconds to initiate the self-test.

On Battery Operation

The UPS switches to battery operation automatically if the utility power fails. While running On Battery, an alarm beeps four times every 30 seconds.

Press the button to silence this alarm. If the utility power does not return, the UPS continues to supply power to the connected equipment until the battery is fully discharged.

When 2 minutes of run time remain, the UPS emits a continuous beeping. If PowerChute is not being used, files must be manually saved and the computer must be turned off before the UPS fully discharges the battery.

Refer to www.apc.com for information on battery runtimes. The UPS battery runtime differs based on usage and environment.

Utility Voltage Measurement

Feature Display		Feature Title	Description
100V	110/120V	Diagnostic Utility	The UPS has a diagnostic feature that indicates the utility voltage
		Voltage	coming into the UPS. The UPS starts a self-test as part of this
118.0	138.2
			procedure. The self-test does not affect the voltage display. See
108.7	128.8
			“Troubleshooting,” beginning on page 15 for additional information.
99.3	119.5

90.0110.1

80.6100.8

1.Press and hold the button to view the utility voltage bar graph indicator.

2.After a few seconds, the five-LED Battery Charge indicator will show the utility input voltage.

3.Refer to the appropriate voltage (100 or 110/120) reading. Values are not listed on the UPS. The actual input voltage is between the displayed value on the list and the next higher value.

Smart-UPS RT 2400/3000 VA Tower/Rack-Mount UPS User Manual 9