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7
COMMUNICATIONS
You can use SiteNet® MultiLink™ to allow your UPS to communicate to
your computer via your DB-9 communications port. Download MultiLink
from our web site at www.liebert.com.
Pin Configuration
Pin # Function
9 On Battery (N.O.)
8 On Battery (Common)
6 On Battery (N.C.)
1 Low Battery
7 Low Battery
5 UPS Ground
4 UPS Off
TROUBLESHOOTING
If the UPS fails to operate properly, turn off the unit and repeat the steps in the
installation section of this manual. If the problem persists, refer to the chart
below:
PROBLEM CAUSE SOLUTION
UPS will not start Overload/Short Circuit Check fuse at rear of UPS. If blown, replace it
and restart the UPS. For further help, call your
Liebert representative.
UPS starts on
battery, but will
not switch to AC
UPS not plugged in
Fuse blown
Power not available at
utility receptacle
Input voltage below
threshold
AC overvoltage
Plug in power
cord securely.
Replace fuse and restart UPS.
Call a qualified electrician.
Wait until voltage rises to appropriate level
AC voltage must be less than 144 VAC for
115V, 270 VAC for 230V.
UPS shuts down Overload/Short Circuit
Low Battery
Sitenet 1 Shutdown
Check the fuse holder at rear of UPS. If fuse is
blown, replace it and restart the UPS. If problem
persists, disconnect some of the equipment from
your UPS - the total wattage of your equipment
may exceed the capacity of the UPS. For
further help, call your Liebert representative.
Turn OFF equipment and recharge UPS battery
for at least 8 hours. If problem persists, contact
your Liebert representative.
Consult the Sitenet 1 User Manual or contact
your LAN administrator.
PIN ASSIGNMENT