Emerson 3000/ITR manual 6.2.1Loss of Water Flow, 6.2.2Smoke Detected, 6.2.3Standby GC Pump On

Alarm Descriptions

6.2Optional Alarms

6.2.1Loss of Water Flow

Available only with 3-way valves and occurs when no water flow is detected in the chilled water or condenser water supply line. An optional flow switch is required for this alarm. Check for service valves closed, pumps not working, etc.

6.2.2Smoke Detected

Smoke is detected in the return air by an optional Liebert Smoke Detector. Check for source of smoke or fire, and follow appropriate emergency procedures.

6.2.3Standby GC Pump On

The primary pump has failed, and the standby pump is activated (glycol cooled and GLYCOOL units only).

Check for problems with the primary pump (fuses blown, motor burnout, service valve shut, stuck check valve, impeller damage, etc.).

6.2.4Standby Unit On

The primary environmental control system has had an alarm condition, and the standby system is activated.

6.2.5Water Under Floor

Water is detected by an optional Liebert Water Detection System. Check under the raised floor for water or other leaks.

NOTE

The alarms are specified by the customer at the time of order. All alarms will report to a Liebert remote monitoring unit. Additional devices and wiring may be required at the factory for some of the alarms.

6.3Set Alarms—User Menus

Table 3	Set alarms—User Menus
				Range	Range
		Small		Large	Small
	Large Display	Display	Alarm Description	Display	Display	Res.	Std.
U201	PASSWORD	-	-	-	-	-	-
U202	Return Sensor	RTN SNSR	Std. Sensor	0 = Disabled	0 = No,	-	Enabled
	Alarms		Alarms Enable	1 = Enabled	1 = Yes
U203	High Return	HI TEMP	Std. Sensor High	34-210 °F	34-210 °F	1	80°F
	Temperature		Temperature Alarm	(1-99°C)	1-99°C		27°C
U204	Low Return	LO TEMP	Std. Sensor Low-	34-210 °F	34-210 °F	1	65°F
	Temperature		Temperature Alarm	(1-99°C)	(1-99°C)		18°C
U205	High Return	HI HUM	Std. Sensor High-	1-99%	1-99%	1	60%
	Humidity		Humidity Alarm
U206	Low Return	HI HUM	Std. Sensor Low	1-99%	1-99%	1	40%
	Humidity		-Humidity Alarm
U207	Sensor A	SENSOR A	Sensor A	0 = Disabled	0 = No,	-	Disabled
	Alarms		Alarms Enable	1 = Enabled	1 = Yes
U208	High-Temperature	HI TEMPA	Sensor A	34-210 °F	34-210 °F	1	90°F
	Sensor A		High-Temperature Alarm	(1-99°C)	(1-99°C)		32°C
U209	Low Temperature	LO TEMPA	Sensor A Low-	34-210 °F	34-210 °F	1	55°F
	Sensor A		Temperature Alarm	(1-99°C)	(1-99°C)		13°C
U210	High Humidity	HI HUM A	Sensor A	1-99%	1-99%	1	70%
	Sensor A		High-Humidity Alarm
U211	Low Humidity	LO HUM A	Sensor A	1-99%	1-99%	1	30%
	Sensor A		Low-Humidity Alarm

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