User Manual English APC Smart-UPS® SC 420/620 VA 110/120/230 Vac Tower Uninterruptible Power Supply 990-1853C, 10/2005
Introduction The APC Uninterruptible Power Supply (UPS) is designed to prevent blackouts, brownouts, sags, and surges from reaching your equipment. The uninterruptible power supply (UPS) filters small utility line fluctuations and isolates your equipment from large disturbances by internally disconnecting from the utility line. The UPS provides continuous power from its internal battery until the utility line returns to safe levels or the battery is fully discharged.
2: START UP Connect the Battery Œ • Connect black wire to battery. (Red wire is already connected.) Note: Small sparks at the point of battery connection are normal. Bottom of unit Ž • Connect Equipment to the UPS Rear Panels 110/120 V: 230 V: § 230 V models: The top off-white outlet provides surge protection only. Equipment plugged into this 500 VA outlet should require surge protection, but should not require power during a utility power failure.
Connect the UPS to the Network (if Applicable) Network Connectors Serial Port Telephone/Network Surge Suppression Ports Use only interface kits approved by APC. Use only the supplied cable to connect to the Serial Port. A standard serial interface cable is incompatible with the UPS. The UPS features optional telephone/network surge suppression. Connect a single line telephone or a 10 Base-T/ 100 Base-Tx network cable into the RJ-45/RJ-11 telephone/network surge protection IN jack on the back of the UPS.
3: OPERATION Front Display Panel 110/120 V 230 V INDICATOR DESCRIPTION On Line The UPS is supplying utility power to the connected equipment. On Battery The UPS is supplying battery power to the connected equipment. Overload The connected loads are drawing more than the UPS power rating. Replace Battery The battery must be replaced. FEATURE FUNCTION Power Button Press this button to turn the UPS on or off. (Read on for additional capabilities.
4: USER CONFIGURABLE ITEMS NOTE: SETTINGS ARE ADJUSTED THROUGH POWERCHUTE BUSINESS EDITION SOFTWARE FUNCTION FACTORY DEFAULT USER SELECTABLE CHOICES DESCRIPTION Automatic Self-Test Every 14 days (336 hours) Every 7 days (168 hours), Every 14 days (336 hours), On Startup Only, No Self-Test Set the interval at which the UPS will execute a self-test. UPS ID UPS_IDEN Up to eight characters (alphanumeric) Uniquely identify the UPS, (i.e. server name or location) for network management purposes.
NOTE: SETTINGS ARE ADJUSTED THROUGH POWERCHUTE BUSINESS EDITION SOFTWARE FUNCTION Low Battery Warning FACTORY DEFAULT USER SELECTABLE CHOICES DESCRIPTION The UPS will beep when 2 minutes of battery runtime remains. 2 minutes 2, 5, 7, 10 minutes PowerChute Business Edition software provides automatic, unattended shutdown when approximately 2 minutes of battery operated runtime remains. (Times are approximate.
5: STORAGE AND MAINTENANCE Storage Store the UPS covered in a cool, dry location, with the battery fully charged. At -15 to +30 °C (+5 to +86 °F), charge the UPS battery every six months. At +30 to +45 °C (+86 to +113 °F), charge the UPS battery every three months. Battery Replacement The UPS battery life differs based on usage and environment. Consider replacing the battery every three years. This UPS has an easy to replace, hot-swappable battery.
6: TROUBLESHOOTING, SHIPPING, AND SERVICE Use the chart below to solve minor UPS installation and operation problems. Refer to www.apc.com with complex UPS problems, and for battery runtime charts. PROBLEM AND/OR POSSIBLE CAUSE SOLUTION UPS WILL NOT TURN ON UPS not connected to utility power supply. Check that the power cord from the UPS to the utility power supply is securely connected at both ends. Battery not connected properly. Check that battery is properly connected.
PROBLEM AND/OR POSSIBLE CAUSE SOLUTION THE OVERLOAD LED IS ILLUMINATED AND THE The UPS is overloaded. The connected equipment is drawing more VA than the UPS can sustain. UPS EMITS A SUSTAINED ALARM TONE The connected equipment exceeds the specified “maximum load.” The alarm remains on until the overload is removed. Disconnect nonessential equipment from the UPS to eliminate the overload.
Shipping and Service Prepare the UPS for shipping: Shutdown and disconnect any equipment attached to the UPS. Shut down the UPS, and disconnect the UPS from the utility power outlet. Disconnect the battery. If the UPS requires service do not return it to the dealer. Follow these steps: 1. Review the problems discussed in Troubleshooting to eliminate common problems. 2. If the problem persists, contact APC Customer Service through the APC web site, www.apc.com/support.
7: REGULATORY AND WARRANTY INFORMATION 110/120 V models This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Limited Warranty American Power Conversion (APC) warrants its products to be free from defects in materials and workmanship for a period of two years from the date of purchase. Its obligation under this warranty is limited to repairing or replacing, at its own sole option, any such defective products. To obtain service under warranty you must obtain a Returned Material Authorization (RMA) number from customer support.
