Liebert CHALLENGER 3000 - Manual (Page 25)

Operation with Advanced Microprocessor with Graphics Control
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3.2 Status Display
The normal status screen is divided into two sections, a right half and a left half. The left half displays
the return air temperature and humidity readings in large characters.
The right half of the screen is divided into four quadrants (top to bottom). In the four quadrants, six
different graphic symbols may be displayed depending on the unit status. At the top there will be a
moving hammer striking a bell that appears when an alarm is present. The word “Alarm” also
appears next to the hammer and bell. The second quadrant down displays a rotating fan as long as
the unit is turned on and the fan is running. The words “Unit on” appear next to the fan symbol. The
third quadrant may display one of two symbols relating to heating or cooling. If the control is calling
for cooling, a growing snowflake is shown next to the word “Cooling.” If the control is calling for heat-
ing, three moving heat rays are displayed next to the word “Heating.” In the bottom quadrant, there
may be one of two symbols relating to humidification and dehumidification. If the control is calling for
humidification, a growing water drop is shown next to the word “Humidification.” If the control is call-
ing for dehumidification, a shrinking water drop is shown next to the word “Dehumidification.”
3.3 Main Menu <MENU/ESC>
Press the MENU/ESC key to display the Main Menu. The Menu selections include:
• VIEW/SET ALARMS
• OPERATING STATUS
• VIEW/SET CONTROL SETPOINTS
• SYSTEM SETUP
• RUN DIAGNOSTICS
• DATE AND TIME
• PLOT GRAPHS
• ANALOG/DIGITAL INPUTS
• VIEW RUN HOURS LOG
Pressing the MENU/ESC key while the Main Menu is displayed will return the screen to the Status
Display.
3.4 View/Set Alarms
Selecting VIEW/SET ALARMS will step to the following menu:
• ACTIVE ALARMS
• ALARM HISTORY LOG
• SETUP ALARMS
• SETUP CUSTOM ALARMS
• VIEW WATER DETECT FLOOR PLAN
• SETUP WATER DETECT FLOOR PLAN
3.4.1 Active Alarms
This screen displays any active alarm. The alarms are numbered, #1 being the most recent. The type
of alarm (Urgent or Warning) is also displayed. If there are no active alarms, then “NO ALARMS
PRESENT” will be displayed.
3.4.2 Alarm History Log
A history of the 60 most recent alarms is kept in nonvolatile memory complete with the type of alarm,
the alarm name, and the date and time it occurred. The first alarm in the history is the most recent
and the last (up to 60) is the oldest. If the Alarm History is full (60 alarms) and a new alarm occurs,
the oldest is lost and the newest is saved in alarm history location 1. The rest are moved down the list
by 1. Alarm history on new units may show the results of factory testing.
NOTE
The display can also be set to display the temperature and humidity setpoints.
See 3.7.7 - Set Status Display.