24 User Guide APC BC300 Series 40kW 208/450/480V UPS
990-1403
Maintenance and Testing
6.0 Maintenance and Testing
APC recommends a periodic preventive maintenance check every six months. APC also
recommends that the cooling fans be replaced every three years.
6.1 Preventive Maintenance Check
At the preventive maintenance check, a qualified service technician should:
• Check all wiring connections.
• Inspect and clean the unit.
• Check the batteries.
• Check the AC and DC meter functions.
• Perform a battery capacity or battery monitor test. (See the sections “Battery
Monitor Test” and “Battery Capacity Test” in this User Guide.)
• Check all modes of operation.
• Perform a power outage test.
Safety precautions must be observed while performing maintenance checks. For more
information on preventive maintenance checks, or to schedule a maintenance check with an
APC-authorized field service representative, call APC Global Service or the nearest APC office.
6.2 Battery Monitor Test
The battery monitor is optional for units with external batteries. The steps on the next page
illustrate how to start a battery monitor test. This test measures the condition of the batteries
and compares it to data programmed into the unit. The test discharges the batteries to about
75% of their capacity. During this test, the unit checks the applied load and the ambient
temperature of the batteries. The unit then compares the results of the test with its
programmed data. If the unit determines that the condition of the batteries is acceptable, it
returns to normal operation. If the test determines that the condition of the batteries is
unacceptable, the unit will sound either a “Battery monitor warning” alarm or a “Battery
monitor alarm.” See Possible Alarms table 5 for more information on these alarms. If you would
like the unit to automatically perform a battery monitor test on a regular basis (default = every
90 days), call the nearest APC office for more information.
NOTICE!
If you are using UPS contacts for a communication link, take the necessary precautions so this
test will not cause a premature shutdown. See your software documentation for more
information.
NOTICE!
The information programmed into the unit is based on the size and type of batteries that were
installed when the unit was sold. If the battery configuration changes, this test will not be
accurate for the new configuration. Call the nearest APC office for more information.
(6 pages)
(9 pages)
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