Hoshizaki IM-51BAE manual

8

The freeze cycle is controlled by a thermistor, which is mounted at the evaporator outlet. The pump is spraying water up into the evaporator cells to form the square IM cubes.

The evaporator temperature lowers as the ice cubes form.

A thermistor temperature of –9.4°F signals the control board to begin harvest and energize the hot gas valve and actuator motor circuit. The actuator motor now turns counter clock wise to lower the water pan. The switch lever moves the actuator toggle switch to the left. This sets the actuator motor circuit to raise the water plate at the end of harvest. The board energizes the inlet water valve.

Unlike the initial harvest, the normal harvest is controlled by the thermistor. When the thermistor reaches 59°F, the control board de- energizes the hot gas valve and energizes the condenser fan motor. The actuator motor energizes to raise the plate. When the plate reaches the evaporator, the actuator toggle switch is moved back to the right. The board de-energizes the inlet water valve and the freeze cycle begins again. The average harvest cycle is about 3 minutes.