Liebert Challenger 3000

2.4.4 Run Hours LogOperation with Advanced Microprocessor ControlsThe total operating hours of all major components in the unit can be monitored from the display andare retained in nonvolatile memory. Run times are available for the following:• Compressor• GLYCOOL Coil (or CW Coil as used on Dual Cooling Unit)•Fan• (HUM) humidifier• (RH1) reheat 1 (or Hot Water or SCR Reheat)• (RH2) reheat 2The component run hours for each individual component can be reset by selecting the run hours displayscreen for the desired component, then pressing ENTER within 5 minutes of applying power tothe control. The user will then be prompted to press ENTER to clear the selected component's runhours.2.4.5 Analog SensorsThe four (4) analog sensor inputs can be monitored from the display. The inputs are filtered, then displayedalong with the text label assigned during setup. See Analog Setup on page 11.2.5 Setpoints/SetupNOTERun hours for a component should be reset ONLY when the component has been replaced.Selecting Setpoints/Setup from the Main Menu will display the following selections:• View setpoints• Setup system• Run diagnostics• Change passwordsNOTESetpoints and system setup parameters are kept in nonvolatile memory.2.5.1 View SetpointsControl and alarm setpoints can be reviewed and/or changed through the display. The following tablelists the default setpoints and their allowable ranges.Table 1 Default setpoints and rangesSetpoint Default RangeTemperature Setpoint 72°F 40 to 90°F (5 to 32°C)Temperature Sensitivity 2.0°F 1 to 9.9°F (0.6 to 5.6°C)Humidity Setpoint 50% 20 to 80% RHHumidity Sensitivity 5% 1 to 30% RHHigh Temperature Alarm 80°F 35 to 95°F (2 to 35°C)Low Temperature Alarm 65°F 35 to 95°F (2 to 35°C)High Humidity Alarm 60% 15 to 85% RHLow Humidity Alarm 40% 15 to 85% RH6