DLR
For alternating pumps
There are two relay outputs with flip-flop action each cycle for alternating duty of pumps. Relay is connected to four probes.
Filling: Link 7 & 8. Pump 1 starts when the level drops below the start level probe. Pump 2 will start if the level drops to the second probe. Both pump run until tank is full. The next cycle pump 2 first then pump 1.
Emptying: No link between 7 & 8. Function as above but reversed.
DLR
For one pump & alarm
Output relay energizes and de-energizes between 2 levels like TE101. When extreme level is reached, the alarm output energizes (2nd relay). Alarm can be used for high of low function.
