Liebert 610 manual UPS System, Cooling

Operation

Table 4 Alarm messages and corrective actions, continued

Alarm

Message

Special

Functions

Meaning and Corrective Action

UPS SYSTEM, continued

		The Emergency Module Off (or Emergency Power Off) switch has been pressed, which
Emergency	D*, L, S	caused the UPS system to shut down and transfer the load to the bypass line (or all power
Off		to the critical load has been shut down). Determine the cause of the emergency condition
		and correct it if possible. Contact Liebert Global Services if you require assistance.
		The Battery Cycle Monitor can retain information about the last 132 battery discharge
Battery Cycle	D, S	events. When the storage buffer approaches its capacity, this warning message is
Buffer Warning		broadcast via terminal and modem communication channels and a complete listing of all
		records is sent to the terminal port. The message clears after 30 seconds.
COOLING
Ambient		The intake air to the UPS module exceeds the specified maximum temperature. This
Overtempera-	D, R, S	condition only causes an alarm, but should be corrected immediately to prevent damage to
ture		equipment due to overheating.
		A fault in one or more of the blower motors has occurred. This condition only causes an
Blower Failed	D, S	alarm, but if not promptly corrected it could cause an equipment overtemperature condition
		that would shut down the UPS module. Check the blowers for proper operation. Contact
		Liebert Global Services if you require assistance.
		Sensors on power semiconductor heat sinks detect temperatures above the steady state
Equipment		limits for these components. The control logic sets off the alarm but does not shut down the
Overtempera-	D, S	UPS module if the condition lasts less than 10 minutes. Check the air intake, air exhaust and
ture		filters. Reduce the load or transfer it to bypass. Contact Liebert Global Services if the alarm
		persists.
Overtempera-		An Equipment Overtemperature condition has persisted for more than 10 minutes. The load
	D, F	is transferred to the bypass line and the UPS module is shut down. Check the air intake, air
ture Time-out
		exhaust and filters before attempting to start-up the UPS.
		Battery self-test can be enabled from System Options screen. For test to start, the following
		conditions must be valid:
		1. No Battery Overtemp Alarm must exist.
		2. Battery input and output circuit breakers must be closed.
Battery	—	3. All three input volt phases must be within nominal range (+10%, -20%).
Exercise		4. DC volts must be greater than (DC Ref) -20V. For a 540 bus, the nominal float voltage for
		240 cells (the DC voltage reference setting) the DC voltage on the battery must be greater
		than 520VDC.
		5. Battery charge must be greater than 90%.
		6. Load must be greater than 15%.

REMOTE MONITOR PANELS

Load On UPS	R	The UPS is operating properly. No corrective action is necessary.
New Alarm	R	Another new alarm message has been registered on the UPS system. Clear the new alarm
		condition, if possible.
Summary	R	One or more of the UPS module alarm messages has been activated. Use the Present
		Status screen to determine which alarms are active. Clear the new alarm condition, if
Alarm
		possible to do so.
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

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