UPS-D Series
Unintrerruptible
Power Supply
DOC NBR:
TEC-876
PAGE
3
OF
3
7.0
Maintenance
1.
With normal use, a UPS battery will last 3 to 6 years depending on the number of discharges and
temperature.
2.
Charge the UPS’s battery every 3 months during extended storage.
3.
Disconnect the power during extended storage to avoid overcharge of the battery.
4.
Avoid overload or short circuit although the UPS has built-in overload and short circuit protection
functions.
8.0
Troubleshooting
Problem
Possible Cause
Action
UPS not On. LCI not lit
POWER button not pushed
or push to short.
Press the POWER button and
hold more than 4 seconds.
PCB failure
Replace the PCB, call for
service.
UPS stays at battery mode
Power Cord loose.
Check the power connection.
AC fuse burned out
Replace AC fuse
Line voltage too high, too
low or black out.
Normal condition.
PCB failure
Replace the PCB, call for
service.
Buzzer continuous beeping
Overload
Remove the non-critical
loads
UPS does not provide
expected run time. Low
battery warning is sounded
prematurely.
Battery is weak due to wear
or successive main outages
Allow UPS to recharge
battery for a minimum of 8
hours. If UPS sounds low
battery warning prematurely
when charges and retested,
then battery should be
replaced.
