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COMPONENTS DESCRIPTION
A.
WATER PUMP
The water pump operates continually throughout
the freezing cycle.
The pump primes the water from the sump to the
spray system and through the spray nozzles
sprays it into the inverted cup molds to be frozen
into crystal clear ice cubes.
It is recommended that the pump motor bearings
be checked at least every six months.
B.
WATER INLET SOLENOID VALVE -
3/4 MALE FITTING
The water inlet solenoid valve is energized only
during the defrost cycle.
When energized it allows a metered amount of
incoming water to flow over the evaporator cavity
to assist the hot gas in defrosting the ice cubes.
The water running over the evaporator cavity
drops by gravity, through the dribbler interstices
of the platen, into the sump reservoir.
C.
HOT GAS SOLENOID VALVE
The hot gas solenoid valve consists basically in
two parts: the valve body and the valve coil.
Located on the hot gas line, this valve is energized
by the contacts 3-2 of the evaporator thermostat
during the defrost cycle.
During the defrost cycle the hot gas valve coil is
activated so to attract the hot gas valve piston in
order to give way to the hot gas discharged from
compressor to flow directly into the evaporator
serpentine to defrost the formed ice cubes.
D.
BIN THERMOSTAT
The bin thermostat control body is located in the
front of control box behind the front louvered panel.
The thermostat sensing tube is located into a
bulb holder on the side wall of the ice storage bin
where it automatically shuts the icemaker OFF
when in contact with the ice and re-starts the
icemaker when the ice is removed. Factory
settings are 1°C OUT and 4°C IN.
E.
CUBE SIZE CONTROL (EVAPORATOR
THERMOSTAT)
The cube size control (evaporator thermostat)
body is located in the front of control box behind
the front louvered panel; it's basically a reverse
acting temperature control which closes the
contacts 3-2 when its temperature decreases
and closes the opposite contacts 3-4 when the
temperature rises.
The thermostat sensing bulb is located into a
plastic tube (bulb holder) secured by two clips
directly to the evaporator serpentine.
This control determines the length of the freezing
cycle and correspondingly the size of the cubes.
A lower setting will produce a larger cube
(oversize) while a higher setting a smaller cuber
(shallow size).
When closed on contacts 3-2 it activates the
defrost or harvest cycle components.
The cube size control is set up in the factory
to ensure the correct dimension.
,
.
NOTE. The thermostat is very sensitive!
By a little movement of the knob correspond
a big size change of the ice cubes. If
necessary only, it's recommended to make
max 1/20 of turn regulation each time.
F.
FAN MOTOR
The fan motor is electrically connected in parallel
to the water pump and it operates continuously
only during the freezing cycle keeping the proper
head pressure by circulating air through the
condenser fins.
G.
COMPRESSOR
The hermetic compressor is the heart of the
refrigerant system and it is used to circulate and
retrieve the refrigerant throughout the entire
system. It compresses the low pressure
refrigerant vapor causing its temperature to rise
and become high pressure hot vapor (hot gas)
which is then released through the discharge valve.
H.
WATER SPRAY SYSTEM
Through its nozzles it sprays the water on each
individual inverted mold to be frozen into ice.
I
SAFETY HI TEMPERATURE THERMOSTAT
Located on the bottom part of the control box it is
a manual reset switch that trips OFF the operation
of the machine when its bulb (located on the
liquid line just before the drier) reaches the
temperature of 80°C.
J.
CLEANING SWITCH
Located on the bottom left side of the control box
is used to energize the water inlet and the hot gas
valves so to charge the water into the sump tank
of the machine.
K.
HI PRESSURE CONTROL
Used on water cooled ice makers it functions to
maintain the head pressure within the preset
values of 6,5 ÷10 bars, by intermittently activating
the water inlet valve to the condenser.
L.
WATER INLET SOLENOID VALVE -
3/4 MALE FITTING
A second water inlet solenoid valve, operating
through an automatic hi-pressure control, is used
on water cooled versions to supply water to the
condenser.
When activated it supplies a metered amount of
water to the condenser in order to limit its tempe-
rature and the refrigerant operating high p ressure.
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