Liebert Challenger 3000

3.8.4 DIP SwitchesOperation with Advanced Microprocessor with Graphics ControlThe DIP switch settings can be reviewed from the display panel. Changing the DIP switches requiresopening the front panel for access to the DIP switches on the microprocessor control board.These selections should match options installed on your unit and should not need to change duringnormal operation. Switches 1 through 7 are self explanatory. DIP switch 8, not shown in Table 11,below, enables the password feature when set to ON and disables the password feature if set to OFF.Table 11 Setting options3.9 Date and TimeThe current date and time is available through the display. This feature allows the date and time tobe read or changed and is accessed by selecting “DATE AND TIME” from the Main Menu. The “DATEAND TIME” is used by the control for recording the Alarm History and plotting graphs.3.10 Plot GraphsNOTEPower MUST be cycled off, then on, from the unit disconnect switch for the control systemto update the DIP switch settings (except for switch 8).Switch # Off On1 No Part Coil Part Coil/Chilled Water2 Electric/Hot Gas Reheat Hot Water Reheat3 All Not Used4 No GLYCOOL GLYCOOL5 No Dual Cooling Dual Cooling6 Not Used Not Used7 a Tight Control Standard Controla SCR reheats only (with special software); otherwise, not used.NOTEThe clock uses the 24 hour system (For example: 17:00 would be 5:00 PM). The date and timeare backed up by battery.Selecting PLOT GRAPHS will step to the following menu:• TEMPERATURE PLOT•HUMIDITY PLOT• ANALOG SENSOR #1 PLOT• ANALOG SENSOR #2 PLOT• ANALOG SENSOR #3 PLOT• ANALOG SENSOR #4 PLOT• MODIFY PLOT SCALESSix different data types are recorded for graphing: temperature, humidity, and four user defined analoginputs. Each data type can be viewed over three different time scales and two different resolutions.The three time scales are 90 minutes, 8 hours, and 24 hours. The two resolutions are minimumand maximum. With minimum resolution selected, the full scale of the sensor is displayed. In otherwords, the largest and smallest possible sensor readings are shown. Maximum resolution shows arange that covers two-fifths of the full scale sensor range.3.10.1 Modify Plot ScalesThe MODIFY PLOT SCALES menu item adjusts the layout of the graph. This setup screen selectsthe time scale and resolution. It also adjusts the center of the graph for a maximum resolution graph.The time scale and resolution can also be changed while the graph is displayed. The DOWN arrow keychanges the time scale from 90 minutes, to 8 hours, to 24 hours. The UP arrow key toggles the displaybetween maximum and minimum resolution.25