Page 29
Page 29
The time between the signal out for the cleaning
of the water system can be modified according to
the setting of the two Dip Switches as below:
TIME
1
2
1 MONTH
ON
ON
3 MONTHS
OFF
ON
6 MONTHS
ON
OFF
1 YEAR
OFF
OFF
Once cleaned the water system, it’s necessary to
cancel the time stored into the PC Board by
pushing and hold for more then 20" the Red
Alarm Re-Set Button till it starts to blink.
M.
CONDENSER AIR FILTER
(Air cooled version)
Located in front of the air cooled condenser can
be removed by withdrawing it through the opening
of the front panel for cleaning or replacing. A
lower plastic guide, installed inside the unit, is used
for the correct sliding and location of the air filter.
N.
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 tube wheve are located
several spray nozzles.
O.
WATER PUMP (2 PCS ACS 126-176)
The water pump operates continually throughout
the freezing cycle and on the first 15 or 30 seconds
of the defrost cycle so to such the remaining water
from the sump tank (reach in mineral salts) and
drain it out. During 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.
P.
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 as well as
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.
Q.
WATER INLET SOLENOID VALVE - 3/4 MALE
FITTING (AC 106 water cooled version only)
A special water inlet solenoid valve with one inlet
and two outles (one for condenser and the second
for the production of ice) is used on water cooled
version. An automatic hi pressure control activates
the second coil of the water inlet solenoid valve
so to supply a metered amount of water to the
condenser and drop down its temperature and
pressure.
R.
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
through the micro processor of P.C. BOARD during
the defrost cycle as well as during the water filling
phase. 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.
S.
FAN MOTOR (Air cooled version)
The fan motor is controlled through the P.C.
BOARD and the TRIAC by the condenser tem-
perature sensor. Normally it operates only during
the freezing cycle to draw cooling air through the
condenser fins. In the second part of the freezing
cycle, the fan motor can run at intermittance as
the condenser pressure must be kept between
two corresponding head pressure values.
T.
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.
U.
HI PRESSURE CONTROL
(AC 106 water cooled version only)
Used only on the water cooled versions it operates
to keep between 9.5 and 10.5 bars (135
÷
150
psig) the hi-side or discharge pressure of the
refrigerant system by energizing the coil of the
water inlet solenoid valve that control the cooling
water flow to the condenser.
V.
WATER REGULATING VALVE - (Not on
AC 106) - (Water cooled version)
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.
W.
CONTACTOR - (Not on AC 106)
Placed outside of the control box it is controlled
by the P.C. BOARD in order to close or open the
electrical circuit to the compressor.
Z.
WATER DRAIN SOLENOID VALVE
(Not on AC 106)
The water drain solenoid valve, electrically
connected in parallel to the water inlet and to the hot
gas solenoid valves, is energized for all the length
of the defrost cycle. By means of the water pump,
that remains energized for 15 seconds at the
beginning of the defrost cycle, it allows the drain out
of all remaining water (rich of minerals deposited
during the previous freezing cycle) from the sump
tank. By doing so it allows to the ice maker to make
every new freezing cycle with new fresh water,
avoiding thereby the accumulation of sediments
and scales, which soon or later will cause the partial
or total clogging of the water system on the unit.