Plug in AC power cord.
Reset breaker.
Reset breaker.
Wait for voltage to
stabilize.
Wait approximately
one minute for
synchronization.
Reset breaker.
*Replace fuse.
*Clean and tighten
battery cables.
*Replace batteries.
Reduce load.
Check load for short.
6. MAINTENANCE
54
SYMPTOM
CAUSE
REMEDY
Utility power outage;
or
AC power cord
unplugged;
or
AC input circuit breaker
OFF.
and
BATTERY circuit
breaker OFF.
AC line voltage too high
or low;
or
UPS is in its
synchronization mode.
BATTERY breaker
tripped.
or
Internal charger fuse
open.
or
Loose or corroded
battery cables.
or
Bad batteries.
Overloaded output;
or
Shorted output.
No Output Power:
"LINE PRESENT" OFF
"LINE FAILURE" OFF
Unit does not
resume LINE
PRESENT operation
when power returns:
"LINE PRESENT" ON
(or flashing)
"LINE FAILURE" ON
"SERVICE" LED ON
Incorrect output
voltage:
"LINE PRESENT" ON
"LINE FAILURE" OFF
"OVERLOAD" ON
6.6 Troubleshooting Guide
Summary of Contents for CFR 1000
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