Troubleshooting The Ups - StorageTek L180 Reference Manual

Troubleshooting the UPS

Table 4-1
troubleshooting the UPS:
Table 4-1. Troubleshooting the APC Uninterruptible Power Supply
Problem and Possible Cause
UPS will not turn on.
• ON button not pushed.
• UPS not connected to AC power
supply.
• UPS input circuit breaker tripped.
• Very low or no utility voltage.
• Battery not connected properly.
UPS will not turn off.
• Internal UPS fault.
UPS operates on battery although normal line voltage exists.
• UPS's input circuit breaker tripped.
• Very high, low, or distorted line
voltage.
UPS beeps occasionally.
• Normal UPS operation.
96047
describes some possible problems and solutions when
Solution
Press the ON button once to power on the UPS
and other equipment.
Make sure the power cable from the UPS to the
customer's input power is securely connected at
both ends.
Reduce the load on the UPS by unplugging
equipment and reset the circuit breaker (on back
of the UPS) until you isolate the device causing the
problem (or the UPS).
Check the AC power supply to the UPS with a
table lamp. If the light is very dim, check the input
voltage.
Check the battery connections.
Do not attempt to use the UPS. Unplug the UPS
and contact StorageTek's Customer Support
Services* immediately to obtain a new UPS.
Reduce the load on the UPS by unplugging
equipment and reset the circuit breaker (on back
of the UPS) until you isolate the device causing the
problem (or the UPS).
• Move the UPS to a different outlet on a
different circuit.
• Test the input voltage with the Utility Voltage
display. If acceptable to the load, reduce the
UPS's sensitivity (refer to the APC User's
Manual for more information).
None. The UPS is protecting the load.
First Edition
Fault Isolation
4-7