There are 6 connections on the doser board of the K3T.
1st connection -- Mains power Neutral (blue wire) and also a connection to the switch (black wire) so that it connects to the momentary switch when it is in manual mode.
2nd connection -- Mains power Active (brown wire)
3rd connection -- the board links this to the second connection so it is also 240V Active.* Black wire from the motor connects to this.
4th connection -- has 2 wires, black wire to the switch (manual setting), Blue wire to the motor (Neutral)
5th connection -- to the main switch on the auto setting.
6th connection -- to the main switch (second point) on the auto setting.
If I get a bit more time I can try to draw you a circuit diagram and scan it in.
Personally I am in the process of taking out the compak doser circuit and replacing it with a digital timer as I found the compak one mostly useless.