Liebert PS250-50S, PS400-50S, PS600-50S user manual Problem Cause Solution

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PROBLEM

CAUSE

SOLUTION

UPS will not start

Input voltage below

Wait until mains voltage rises to appropriate level.

 

threshold

 

 

Overload/Short Circuit

Check circuit breaker at rear of UPS (9). If it is activated, reset it and restart

 

 

the UPS (See "Resetting Circuit Breaker'). If problem persists, disconnect

 

 

some of the equipment from UPS - the total wattage or all your equipment

 

 

may exceed the capacity of the UPS. If it still will not start, check your

 

 

computer equipment for short circuits. For further help, call your dealer.

 

Input frequency mis-

Check Option Switch #1 on rear of UPS (6). Slide switch to left for OFF, to

 

match with option switch

right for ON. OFF = 60 Hz, ON = 50 Hz. The UPS frequency must match

 

setting

the frequency of your input mains supply.

 

Mains overvoltage

Mains voltage must be less than 270 VAC.

UPS starts on

UPS not plugged in

Plug in power cord securely.

battery, but will not

 

 

switch to mains

Circuit breaker activated

Reset circuit breaker (see “ResettingCircuit Breaker”) and restart UPS.

power.

 

 

(400 & 600 VA

Power not available at

Call a qualified electrician.

only)

utility receptacle

 

 

 

 

UPS shuts down.

Overload/Short Circuit

Check circuit breaker at rear of UPS (9). If it is activated, reset it and restart

 

 

the UPS (See "Resetting Circuit Breaker"). If problem persists, disconnect

 

 

some of the equipment from UPS - the total wattage of all your equipment

 

 

may exceed the capacity of the UPS. If it still will not start, check your

 

 

computer equipment for short circuits. For further help, call your dealer.

 

Low Battery

Turn OFF equipment and recharge UPS battery for at least 8 hours. If

 

 

problem persists, replace battery.

 

Sitenet 1 Shutdown

Consult the SiteNet 1 User Manual or contact your LAN administrator.

 

(400 & 600 VA only)

 

 

 

 

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Contents PowerSure Important Safety Instructions Installation Instructions Operating Instructions Option Switch Settings COMPUTER/LAN Interface 400/600 VA onlyBattery Test Button Battery Care and USEResetting the Circuit Breaker Alarm ConditionsProblem Cause Solution VA LED & Alarm Indications Specifications Dimensions mmLimited Warranty Technical Support