Optional Alarms; Loss Of Water Flow; Smoke Detected; Standby Gc Pump On - Emerson Liebert Challenger 3000 Operation & Maintenance Manual

6.2

Optional Alarms

6.2.1

Loss 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.
6.2.2

Smoke 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.
6.2.3

Standby 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.).
6.2.4

Standby Unit On

The primary environmental control system has had an alarm condition, and the standby system is
activated.
6.2.5

Water 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.
6.3 Set Alarms—User Menus
Table 3 Set alarms—User Menus
Large Display
U201 PASSWORD
Return Sensor
U202
Alarms
High Return
U203
Temperature
Low Return
U204
Temperature
High Return
U205
Humidity
Low Return
U206
Humidity
Sensor A
U207
Alarms
High-Temperature
U208
Sensor A
Low Temperature
U209
Sensor A
High Humidity
U210
Sensor A
Low Humidity
U211
Sensor A
Small
Display Alarm Description
-
Std. Sensor
RTN SNSR
Alarms Enable
Std. Sensor High
HI TEMP
Temperature Alarm
Std. Sensor Low-
LO TEMP
Temperature Alarm
Std. Sensor High-
HI HUM
Humidity Alarm
Std. Sensor Low
HI HUM
-Humidity Alarm
Sensor A
SENSOR A
Alarms Enable
Sensor A
HI TEMPA
High-Temperature Alarm
Sensor A Low-
LO TEMPA
Temperature Alarm
Sensor A
HI HUM A
High-Humidity Alarm
Sensor A
LO HUM A
Low-Humidity Alarm
Range
Large
Display
- -
0 = Disabled
1 = Enabled
34-210 °F
(1-99°C)
34-210 °F
(1-99°C)
1-99%
1-99%
0 = Disabled
1 = Enabled
34-210 °F
(1-99°C)
34-210 °F
(1-99°C)
1-99%
1-99%
35
Alarm Descriptions
Range
Small
Display Res. Std.
- - -
0 = No,
- Enabled
1 = Yes
34-210 °F 80°F
1
1-99°C 27°C
34-210 °F 65°F
1
(1-99°C) 18°C
1-99% 1 60%
1-99% 1 40%
0 = No,
- Disabled
1 = Yes
34-210 °F 90°F
1
(1-99°C) 32°C
34-210 °F 55°F
1
(1-99°C) 13°C
1-99% 1 70%
1-99% 1 30%