Mechanical Components - Scotsman BC0530 Service Manual

BC0530 Service Manual

Mechanical Components

Refrigerant Compressor: Provided to pump
refrigerant through the refrigeration system. See the
serial number plate for refrigerant specification and
electrical characteristics.
Condenser: All air-cooled models are provided with a
self-contained refrigerant condenser to remove heat
from the refrigeration system.
Condenser Fan and Motor: Provided with all air-
cooled models to draw air through the condenser.
Heat Exchanger: Provided to sub-cool the refrigerant,
ensuring that the refrigerant is liquid at the inlet of the
expansion valve.
Filter Drier: Provided as insurance that all moisture
and impurities are removed from the refrigeration
system.
Thermostatic Expansion Valve: Maintains the
proper flow of refrigerant, through the system, as the
load changes during the ice making cycle.
Evaporator: A plated copper evaporator is found in
all models. The evaporator provides the five freezing
surfaces for ice cube formation.
Defrost Valve: Directs compressor discharge gas to
the evaporator, warming it to release the ice cubes
during the harvest cycle.
Water Tank: Provided as a sump to hold the water
required to make one batch of ice cubes.
Water Solenoid Valve: Opens to allow potable water
to enter the ice machine and closes when the water
tank is filled to the correct level.
Note: There is a strainer in the water valve inlet,
which protects the water valve from particles in the
water supply. If the need for cleaning this strainer is
frequent, an external water filter should be provided.
Water Plate: Functions as a water manifold with a flat
surface and to regulate the web thickness between
the cubes. This surface is positioned close to the
evaporator and acts to form the sixth side of the ice
cubes. The water plate surface has one spray hole
for each cell in the evaporator, to provide water to the
freezing surfaces. The water plate surface also has
two drain holes under each cell, to allow unfrozen
water to return to the water tank to be re-circulated.
The water plate swings down during the harvest cycle
to allow the ice cubes to fall out of the evaporator.
Note: If at any time during the Fill, Freeze, or
Circulate cycle the water plate is manually opened the
controller will switch to the step 3 of the ice making
sequence.
Water Pump: Continuously circulates the water from
the water tank, through the water plate during the ice
making cycle. The water pump also operates during
the wash cycle to circulate cleaning and sanitizing
solution.
Actuator Motor: Rotates the cam arms
counterclockwise, at the beginning of the ice harvest
cycle, to lower the water plate, so the ice can fall out
of the evaporator. It then rotates clockwise, at the end
of the harvest cycle, to close the water plate for the
next ice making cycle.
Actuator Motor Capacitor: Installed between the two
actuator motor windings, the function of this capacitor
is to determine the direction of the rotation of the
actuator motor.
Cam Arms: These are attached to the actuator motor
output shaft and function initially to separate the water
plate from the evaporator and then to support the
water plate as it opens fully.
March 2020
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