Grundfos DPC 2-1, Инструкция по установке и эксплуатации

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Using 3 Float switch (one float in UG tank, two floats in OH tank)
Start condition:
If water level in UG tank is high ie. Float A is up and water level in OH tank is
low ie. Float B is down, panel will start pump A. Panel will alternate between
pump A and pump B, after previous cycle is completed. LCD screen will display
pump A/B run on screen.
If the water level in the OH tank goes down even further below, and Float C is
down panel will start the standby pump along with the duty pump which is
running. ie. If pump A was running earlier when float B was down, and water
level in OH tank has gone even more down due to rising demand and Float C
is also now in down position, panel will start pump B also.
Stop condition:
If the water level in UG tank is low ie. Float A is down, if any of the pump(s) are
running, panel will stop the pump(s) indicating that there is not enough water
in UG tank. LCD screen will display No water.
If the water level in OH tank is high ie. Float A is up. Panel will stop the pump(s)
that are running indicating that the OH tank is full. LCD screen will display Full.
If both pumps, ie. Pump A and Pump B are running and water level in OH tank is
high which means Float B and Float C are up. Both pumps will stop simultaneously
only when the higher float ie. Float B is in up position.
On any of the situation stated above occur, pump(s) will stop running.