3.6 External Level Sensor ........................................................................................................... 52
3.7 Auxiliary Alarm Inputs.......................................................................................................... 53
3.8 Commissioning Procedure .................................................................................................... 54
3.8.1 Commissioning Checks.................................................................................................. 54
3.8.2 Levels............................................................................................................................ 54
3.8.3 Setting End of Probe Level............................................................................................ 55
3.8.4 Setting 2nd Low Level ..................................................................................................... 57
3.8.5 Setting 1st Low Level...................................................................................................... 58
3.8.6 Setting Control Point Level ............................................................................................ 59
3.8.7 Setting HIGH Level ....................................................................................................... 60
3.8.8 Save Commissioning..................................................................................................... 61
3.8.9 Operational Checks...................................................................................................... 63
3.8.10 Adjust Control Point ...................................................................................................... 64
3.9 Water Level Control Functions.............................................................................................. 65
3.9.1 Pre-Alarms .................................................................................................................... 65
3.9.2 Pump Bypass................................................................................................................. 65
3.9.3 Test Outputs and Shunt Switch...................................................................................... 66
3.9.4 Sudden Pressure Drop .................................................................................................. 67
3.10 Faults .................................................................................................................................... 68
4TOP BLOWDOWN ................................................................................................. 71
4.1 Overview.............................................................................................................................. 71
4.1.1 Importance of Maintaining TDS.................................................................................... 71
4.1.2 TDS, Conductivity and Temperature ............................................................................. 72
4.2 TDS Valve ............................................................................................................................. 73
4.3 TDS Probe............................................................................................................................. 74
4.3.1 Specification ................................................................................................................. 74
4.3.2 Dimensions.................................................................................................................... 75
4.3.3 Installation .................................................................................................................... 76
4.3.4 Configuration................................................................................................................ 77
4.4 Ways of Controlling TDS Level ............................................................................................. 78
4.4.1 Continuous TDS Control................................................................................................ 78
4.4.2 Solenoid and Servomotor 2-State TDS Control............................................................. 78
4.4.3 TDS Timing Diagram ..................................................................................................... 79
4.4.4 Sample Routine............................................................................................................. 80
4.5 Calibrating TDS Probe .......................................................................................................... 81
4.6 Faults .................................................................................................................................... 83
5BOTTOM BLOWDOWN.......................................................................................... 84
