[C] Extruding Head (Bearing); [D] Housing; [E] Mechanical Seal; [F] Coupling (Spline Joint) - Hoshizaki FM-481AGE-HC Service Manual

[c] EXTRUDING HEAD (BEARING)

The stainless steel Extruding Head is provided with a press-fit plastic Bearing inside and
fixed on top of the Evaporator. The Extruding Head functions as the Auger Bearing and
compresses the sherbet ice carried up by the Auger into a column shape with the path
resistance.

[d] HOUSING

The cast bronze Housing is provided with a press-fit plastic Bearing inside and fixed on the
bottom of the Evaporator for connection with the Gear Motor.

[e] MECHANICAL SEAL

The Mechanical Seal on the lower Auger Bearing prevents icemaking water leaks into the
Evaporator. The mating surfaces are made of ceramic and carbon.

[f] COUPLING (SPLINE JOINT)

The Auger bottom and Gear Motor output shaft are splined and connected with the Spline
Joint.

[g] GEAR MOTOR

The Gear Motor consists of a 1 phase 240V drive motor integrated with a decelerator and
provided with a built-in auto-reset Thermal Protector. When the Thermal Protector trips, the
Controller Board will stop the Gear Motor. The Protector can be reset by the Reset Button
on the Operation Board. The Thermal Protector trips when the Gear Motor mechanism is
overloaded or when excessively high or low voltage is applied on the Gear Motor. The
electrical capacity must be increased if a large current flows through the surrounding
equipment.
[h] BELT HEATER - FM-481AGE-HCN, FM-300AFE-HCN ONLY
The Belt Heater is provided to reduce the load of ice passing the Extruding Head during a
freeze cycle and to prevent vapor lock during a flush cycle.

[i] REMOVABLE FLANGE

The Flange used to be welded on the Evaporator to fix the Spout. But sometimes the
Extruding Head applies excessive load on the Evaporator to compress ice, resulting in
breaking the welded joints. To avoid the load, the Flange has been changed to a separate
part to be secured together with the Extruding Head by using a socket head cap screw.

[j] SOCKET HEAD CAP SCREW

Sometimes the icemaking operation may produce white solids on the Drip Pan. They are
deposits of silica and calcium contents in the icemaking water leaking from the socket head
25