Icematic DX 40, Service Manual

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The DIP SWITCH keys 8 and 9 setting
determines the range between cut in and cut out
temperature of the ice bin level temperature
sensor as specified in table D.
The 10th DIP SWITCH is used to control the
-13
°
C (9
°
F) evaporating temperature and must
be left always in OFF position.
F. WATER SPRAY SYSTEM
Through its nozzles, the water pumped, is sprayed
in each individual cup to be frozen into ice.
It consists of one spray platform which has six
spray nozzles each.
G. WATER PUMP
The water pump operates continually throughout
the freezing cycle priming 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.
H. WATER INLET SOLENOID VALVE - 3/4
MALE FITTING
The water inlet solenoid valve is activated by the
Micro Processor of the P.C. BOARD during the
first 5 minutes of water filling phase and as well
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 holes of the
platen, into the sump reservoir where it will be
sucked by the water pump and primed to the
spray system.
I. HOT GAS SOLENOID VALVE
The hot gas solenoid valve consists basically of
two parts: the valve body and the valve coil.
8 9 DELTA T (
°
C)
ON ON 1
OFF ON 1,5
ON OFF 2
OFF OFF 2,5
TAB. D ICE LEVEL SENSOR CONTROL TEMPERATURE RANGE ACCORDING TO
THE DIP SWITCH SETTING COMBINATIONS
Located on the hot gas line, this valve is energized
through the Micro Processor of P.C. BOARD
during the defrost cycle and during the water
filling phase.
During the defrost cycle the hot gas valve coil is
activated so to attract the hot gas valve stem in
order to give way to the hot gas discharged from
the compressor to flow directly into the evaporator
serpentine to defrost the formed ice cubes.
J. FAN MOTOR (Air cooled version)
The fan motor, electrically connected to the head
pressure control, operates during freezing cycle
to draw cooling air through the condenser fins
keeping the the condensing temperature and the
condensing pressure between the operating
values according to the ambient temperature.
K. 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 which is
then released through the discharge valve.
L. AUGER DRIVE MOTOR
The Auger Motor electrically connected to the
PC BOARD is located behind the upper front
panel and is used to move the ice cubes towards
the dispensing chute placed on the upper side of
the dispensing system.
M. WATER REGULATING VALVE
This valve controls the head pressure in the
refrigerant system by regulating the flow of water
going to the condenser.
As pressure increases, the water regulating val-
ve opens to increase the flow of cooling water.
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