Liebert PowerSure PS400-60S - Manual (Page 9)

9
RESETTING THE CIRCUIT BREAKER
If the UPS is overloaded, the circuit breaker (9) at the lower rear of the UPS
activates to protect the UPS. If the circuit breaker activates, its center bar will
extend. To reset the circuit breaker, simply push the bar back in. If the circuit
breaker activates often, ask your dealer to check the UPS sizing or call Tech
Support at 1-800-222-5877.
ALARM CONDITIONS
The 400 VA and 600 VA models sound alarms and flash visual indications at the
front panel LED's (2, 3, 4) whenever they sense a power failure, low battery
voltage (while on battery), an overload, or a utility overvoltage condition. The
250 VA model only sounds an alarm. Sometimes, a fault in your computer
equipment may cause an overload alarm. See following page for alarm
indications.
You may silence the On-Battery alarm on 400 VA and 600 VA models by
pressing the BATTERY TEST button (5), on the rear panel. You must turn off
your computer equipment and then turn off the UPS to silence an alarm on a 250
VA model.
Refer to the first table on the next page for recommended actions when alarms
occur. Check this table first before calling for assistance. It diagnoses and
solves common problems, and helps prevent potential problems.
PROBLEM CAUSE SOLUTION
UPS will not start
Input voltage below
threshold
Overload/Short Circuit
Input frequency mis-
match with option switch
setting
Utility overvoltage
Wait until utility voltage rises to appropriate level.
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.
Check Option Switch #1 on rear of UPS (6). Slide switch to left for OFF, to
right for ON. OFF = 60 Hz, ON = 50 Hz. The UPS frequency must match
the frequency of your input utility supply.
Utility voltage must be less than 135 VAC.
UPS starts on
battery, but will not
switch to utility
power.
(400 & 600 VA
only)
UPS not plugged in
Circuit breaker activated
Power not available at
utility receptacle
Plug in power cord securely.
Reset circuit breaker (see “Resetting Circuit Breaker”) and restart UPS.
Call a qualified electrician.
UPS shuts down.
Overload/Short Circuit
Low Battery
Sitenet 1 Shutdown
(400 & 600 VA only)
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.
Turn OFF equipment and recharge UPS battery for at least 8 hours. If
problem persists, replace battery.
Consult the SiteNet 1 User Manual or contact your LAN administrator.