Eiserzeuger vom Schneckentyp

An electric control apparatus for an auger type ice making machine having an auger mounted for rotary movement within an evaporator housing to which water is supplied from a water tank to cause ice crystals to form on the internal freezing surface of the evaporator housing. The control apparatus includes a first water level detector (10A) disposed within the water tank (9) to produce a first signal therefrom when a level of water in the tank has fallen to a lower limit level, a second level detector (10B) disposed within the water tank to produce a second signal therefrom the level of water has risen to an upper limit level, a timer (22) cooperable with the second water level detector for measuring a predetermined period of time in response to the second signal, the period of time being determined to correspond with a time interval defined by the first and second signals in normal operation of the ice making machine, and a relay circuit (X4, X41, KX1, KX11, KX12) cooperable with the first water level detector and the timer for rendering the ice making machine inoperative when the predetermined period of time has been measured by the timer before applied with the first signal.