How It Works; Component Description - Scotsman CSE60 Service Manual

HOW IT WORKS:

Cube Size Control
The cube size control is located in front of the
control box, behind the front panel. The sensing
capillary tube of the cube size control is routed
out of the control box into its bulb holder on the
evaporator coil. It is a reverse acting
temperature control with double throw contacts.
Turning its knob all the way counterclockwise
also shuts off the ice maker.
The control determines the length of the freezing
cycle and correspondingly the size of the cube.
A lower setting will produce a smaller cube, and
a higher setting will make a larger cube. The
cube size control changes its contacts when the
evaporator reaches its preset temperature,
starting the harvest cycle. When the sensing
tube of the cube size control reaches the high
preset temperature, the contacts change again,
restarting the freeze cycle.
Compressor Toggle Switch.
The compressor toggle switch is located on the
side of the control box. When moved to the ON
position, it makes a circuit to the compressor.
When moved to the OFF position, the other
components will still operate.
High Temperature Cut Out
This control senses the temperature of the
discharge line and will open to stop the
operation of the ice machine should the
discharge temperature exceed the preset
o
maximum (175 F). After it cools to 140
then be manually reset to restart the machine by
pushing the button at the front of the control box.
Water Pump
The water pump operates during the freezing
cycle only, pumping water through the spray
nozzles into the inverted spray cups.
Inlet Water Solenoid Valve
The water solenoid valve, located in the back
panel of the unit, is energized only during the
harvest or cleaning cycles. When energized it
allows a metered amount of water to flow into
the machine (.21 g.p.m.) This water flows to the
top of the evaporator and then down into the
reservoir.

COMPONENT DESCRIPTION

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F. it must
June 2001
Page 7
Bin Thermostat Control
The bin thermostat control body is located in
front of the control box just beside the cube
size control. The thermostat sensing tube is
located in the ice storage bin on the left side wall
where is automatically shuts the ice maker off
when the bin is full and restarts when ice is
removed. Factory settings are 1 degree C (36
degrees F) cut out and 4 degrees C (39 degrees
F) cut in. It can be adjusted by turning the
adjustment screw visible through the control box
cover.
Hot Gas Valve Assembly
The hot gas valve assembly is comprised of two
parts, the valve body and the coil. These parts
are located on the discharge line of the
compressor and are activated by the cube size
control (harvest cycle). When the coil of the hot
gas valve is energized, it magnetically lifts the
plunger in the hot gas valve body. This allows
hot refrigerant gas to by-pass the condenser and
go directly to the evaporator.
Spray Platform and Chute
The spray system used on this unit is of the
stationary type. The water is forced by the
water pump into the platform chamber and
sprayed into the inverted cup molds through a
set of six spray nozzles.
Fan Motor
The fan motor is electrically connected through
the cube size control and runs only during the
freezing cycle.
Hermetic Motor Compressor
The compressor is a vapor pump, forcing
refrigerant gas throughout the refrigeration
system.
CSE60