Liebert 30-130kVA manual Maximum heat sink temperature limit

Operation

Table 7	Alarms, functions, and corrective actions (continued)
Actual
Alarm/fault
Name
Displayed		Description	Fault
On Front		of Alarm/	Or	Latch	Dial	Freeze	Event Log
Panel		Fault	Alarm	Mask	Mask	Mask	Mask	Meaning and Corrective Action(s)
								The maximum heat sink temperature limit
								has been exceeded. (Should be preceded
								by a “Heatsink” Overtemp Warning alarm).
								The load will be transferred to the Static
								Bypass if available. If the load was already
								on SBS when this alarm occurred, the
Hsink ovtemp		Heatsink						system will shut down. The fault will clear
		Overtemp	Fault	YES	YES	YES	YES	when the temperature falls below the
limit
		Limit						Heatsink Overtemp Warning threshold. (If
								this fault doesn’t clear soon enough it will
								lead to an “Overtemp Time-out Shutdown”).
								If the unit is still running it will make an
								attempt to auto-retransfer when the fault
								clears. If the faults do not clear; contact
								Liebert Global Services.
								The input source is present, but the input
Inp pwr		Input Power						power supply has failed. The unit has
			Fault	NO	YES	NO	YES	redundant power supplies on both the input
supply fail		Supply Fail
								and the output. Contact Liebert Global
								Services immediately.
								The output source is present, but the output
Out pwr		Output Power						power supply has failed. The unit has
			Fault	NO	YES	NO	YES	redundant power supplies on both the input
supply fail		Supply Fail
								and the output. Contact Liebert Global
								Services immediately.
								The Outlet air temperature has exceeded
								its maximum set point. The UPS will
								transfer the load to bypass if available. If
								already on bypass the system will
								shutdown. The fault will clear when the
								temperature falls below the Outlet Air
								Overtemp Warning threshold. (If this fault
Ups Ambient		UPS Ambient	Fault	YES	YES	YES	YES	doesn’t clear soon enough it will lead to an
Limit		Ot Limit						“overtemp Time-out Shutdown”.). If the unit
								is still running when the fault clears it will
								auto retransfer to UPS. Check all air inlets
								and exhausts for blockage and check the
								air filter. Check the actual load against the
								UPS rating. Remove any excess load.
								Contact Liebert Global Services if the alarm
								persists.
								Failure of this fuse will remove control
								power. The UPS will attempt to transfer to
Pwr Supply		Power Supply	Fault	NO	YES	NO	YES	Static Bypass if available. Locate the cause
F1 Fail		F1 Fail						of any failure, before replacing a fuse or
								Contact Liebert Global Services
								Immediately.
								UPS will transfer to Static Bypass if
SWGR Power		SWGR Power	Fault	NO	YES	NO	YES	available and shut down the UPS. Start-up
Fail		Fail						will be inhibited. Contact Liebert Global
								Services.

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