Troubleshooting guide

MAGNUM VERSION 8 MANUAL REVISION 3.1
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4.3. CENT Status Display (MCS-Connect)
The Control Status for centrifugal compressor portion of the Status screen is shown below.
Centrifugal (unit) information is shown in the top section:
 Capacity Control State - State of chiller
 Time - Time spent in current state. If the state is UNIT IN POWER UP time will count down to zero.
 Wanted / Actual - Number of capacity steps Wanted On versus Actual On.
 Step Delay – Value that is counted down. The sensitivity and difference between the control sensor and control
zone will determine the speed of the countdown. When this value reaches zero, the controller will determine if a
change in the system capacity is required.
 Wanted FLA % - Wanted Full Load Amp percentage.
 Rate Of Change – Rate of Change of control sensor.
 Control On - The control sensor value. The name and the reading will be displayed, with color to indicate its
relationship to the target Setpoint.
 Mode - The mode can be either COOLING or HEATING.
 CTRL LIFT – Control Lift = Saturated Discharge Temperature - Saturated Suction Temperature (OR) Turbine
Input PSI (converted to temperature).