Liebert 1000kVA Operation & Maintenance Manual page 74

Table 9 Alarm messages - meaning and corrective action (continued)
Alarm Cabinet
Message Location
Battery Overtemp MMU
Hardware
MMU
Shutdown
SCC
Emergency Off
MMU
COOLING
Ambient
MMU
Overtemperature
Blower Failed MMU
Equipment
MMU
Overtemperature
Overtemperature
MMU
Timeout
REMOTE MONITOR PANELS
(Refer also to SCC and module remote monitor indications and Other alarms that activate summary alarms in 3.2.6 -
System Configuration Screens)
Load On UPS SCC
SCC
New Alarm
MMU
System Summary
SCC
Alarm
Module Summary
MMU
Alarm
Table 9 Abbreviations
D = auto-dial; L = latches
E = logs only; R = remote
F = freezes; S = summary
D* = auto-dial initiated by Auto Transfer to Bypass if load is on UPS when alarm occurs
D# = auto-dial initiated through Module N (1-6) off-line
Special
Functions
Battery Temp option must be installed and enabled. Battery Temp
D, S exceeds the programmed limit set in Alarm Settings screen for more than
one minutes.
At least one of the following alarm conditions is present: Inverter Fault,
Rectifier Fuse Blown, Reverse Power, Overload Shutdown, logic power
supply failure or inverter output symmetry failure. The UPS module is
D#
taken off-line and is shut down.
Contact Liebert Global Services at once. Do not attempt to reset the
circuit breakers.
The Emergency Module Off (or Emergency Power Off) switch has been
pressed, which caused the UPS system to shut down and transfer the
load to the bypass line (or all power to the critical load has been
D*, L, S
shutdown).
Determine the cause of the emergency condition and correct it if possible.
Contact Liebert Global Services if you require assistance.
The intake air to the UPS module exceeds the specified maximum
temperature.
D, R, S
This condition only causes an alarm, but should be corrected immediately
to prevent damage to equipment due to overheating.
A fault in one or more of the blower motors has occurred. This condition
only causes an alarm, but if not promptly corrected it could cause an
equipment overtemperature condition that would shut down the UPS
D, S
module.
Check the blowers for proper operation. Contact Liebert Global Services if
you require assistance.
Sensors on power semiconductor heatsinks detect temperatures above
the steady state limits for these components. The control logic sets off the
alarm but does not shut down the UPS module if the condition lasts less
D, S
than 10 minutes.
Check the air intake, air exhaust and filters. Reduce the load or transfer it
to bypass. Contact Liebert Global Services if the alarm persists.
An Equipment Overtemperature condition has persisted for more than 10
minutes. The UPS module is taken off-line and is shut down.
D, F
Check the air intake, air exhaust and filters before attempting to start-up
the UPS.
R The UPS is operating properly. No corrective action is necessary.
R Another new alarm message has been registered on the UPS system.
Clear the new alarm condition, if possible.
R
One or more of the UPS system alarm messages has been activated or a
control logic failure has been detected by a watchdog timer.
R
Use the Present Status screen to determine which alarms are active.
Clear the new alarm condition if possible to do so.
One or more of the UPS module alarm messages has been activated.
R Use the Present Status screen to determine which alarms are active.
Clear the new alarm condition, if possible to do so.
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Meaning and Corrective Action
Operation