The Dairymaster Liquid Level controls the operation of the milk pump and its interaction with the cooling system based upon the level of milk in the receiver. When the upper level is reached pumping commences until the milk once again reaches the lower level. The cooling water supply can be switched off by a solenoid when the milk pump is inactive. The system is designed to cater for varying levels of froth in the milk receiver and results in better control and reliability of milk pumps. An optional solenoid can control cooling motor supply.