SLI-23275QS (
9
/03) Rev. 0
T
ROUBLESHOOTING
The information below indicates various symptoms a user may
encounter in the event the PowerSure PST experiences a problem.
Use this information to determine whether external factors caused
the problem. See
GUIDE TO STATUS INDICATORS
1. The Fault indicator illuminates,
indicating the UPS detected a
problem.
2. An alarm sounds, alerting that the
UPS requires attention. The alarm
can be silenced except for low
battery, overload and
overtemperature warning
conditions.
3. Mains/Battery indicator may be
illuminated as a diagnostic aid to
the operator, as shown below:
Fault
(Red)
Mains/Battery
(Green)
Diagnosis/
Audible Alarm
Normal Mode
—
ON
UPS is operating in
Normal Mode; no
beep.
—
Flashing
Battery Test has
been initiated; no
beep.
Flashing
ON
The unit is
overloaded; beep
every half-second
ON
ON
The UPS has
failed; continuous
Flashing
—
Unit has shutdown
due to overload;
continuous beep
ON
—
The UPS shutdown
due to failure;
continuous beep
Battery Mode
—
Flashing
The UPS is
operating in Battery
mode; beep every
5 seconds.
—
Flashing
UPS battery is low;
beep every
half-second
Flashing
Flashing
The unit is
overloaded; beep
every half-second
ON
Flashing
The UPS has
failed; continuous
beep
Fault
Indicator
Mains/Battery
Indicator
!
+
-
T
ROUBLESHOOTING
C
HART
If the UPS fails to operate properly, turn off the unit and repeat
the steps in the
section of this manual. If the prob-
lem persists, refer to the chart below:
Problem
Cause
Solution
UPS will
not start
Overload/
Short circuit
Check the circuit protector
on the side of the UPS. If
it is tripped, reset it and
restart the UPS.
For further help, call your
local dealer, Liebert
representative or the
Liebert Worldwide
Support Group.
UPS starts
on battery,
but will
not switch
to AC
UPS not
plugged in
Plug in power cord
securely.
Circuit
protector
tripped
Reset the circuit protector
and restart the UPS.
Power not
available at
mains
receptacle
Have the mains
receptacle checked by a
qualified electrician.
Input voltage
below
threshold
Wait until the voltage rises
to an appropriate level or
have the mains receptacle
checked by a qualified
electrician.
AC
overvoltage
Wait until voltage lowers
to an appropriate level or
have the mains receptacle
checked by a qualified
electrician.
UPS shuts
down,
Fault
Indicator
lit
Overload/
Short circuit
Check the circuit protector
on the rear of the UPS. If
it is tripped, reset it and
restart the UPS.
If the problem persists,
disconnect some of the
equipment from your
UPS—the total wattage of
your equipment must not
exceed the capacity of the
UPS. For further help, call
your local dealer, Liebert
representative or the
Liebert Worldwide
Support Group.
Internal UPS
fault
UPS not
providing
expected
backup
time
Overload
Reduce load.
Battery not
charged due
to a recent
outage
Recharge battery.
M
AINTENANCE
The PowerSure PST UPS requires very little maintenance. Follow these
practices to prevent problems.
CLEANING THE UPS
The following will help ensure trouble-free operation for years:
• Vacuum dust from the ventilation intake occasionally.
• Wipe the cover periodically with a dry cloth.
MAINTAINING BATTERIES
The batteries are valve-regulated, nonspillable, lead acid and must be
kept charged to retain their design life. The UPS continuously charges the
batteries when connected to the mains supply, even while the UPS is
switched off.
When storing the UPS, it is recommended to plug in the UPS for at least
24 hours every four to six months to ensure full recharge of the batteries.
W
ARRANTY
R
EGISTRATION
To register for warranty protection:
• Visit the
Quick Links
section of our Web site at:
• Click on
Product Warranty
Registration
and fill in the form.
IF YOU HAVE ANY QUESTIONS,
PLEASE CONTACT US AT:
US: 800-222-5877
Outside the US: 614-841-6755
