Icematic N 132M, Руководство по обслуживанию

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water - for more than 10 seconds, a small relay of the
electronic board, get energized, controlling - simulta-
neously the hot gas valve, the water drain valve and
the harvest assist solenoid.
At this point, the unit initiates the defrost cycle.
The hot gas circulating into the evaporator serpentine
causes a slight melting of ice cubes which get released
from their molds. In the mean time the harvest assist
solenoid is also energized pushing out the ice plate.
Once entirely released the ice cubes drop simultane-
ously into the ice storage bin below; by doing so they
move apart from the evaporator bottom end the plastic
deflector.
This plastic deflector has on its side a magnetic switch
that on account of the deflector swinging motion,
caused by the ice while dropping in the bin, opens and
closes their contacts.
This will, in turn, disactivate the relay contacts that
controls the hot gas, harvest assist solenoid and water
drain valve which get deenergized allowing the unit to
start a new freezing cycle.
When the ice bin is full of ice, the last batch of ice
cubes released from the evaporator accumulates to
keep the bottom end of the plastic deflector in open
position; with the magnetic switch contacts open for
longer than 30'’ the entire unit stops with the glowing of
the corresponding LED.
The machine will restart when the ice deflector will be
back in its normal vertical position provided that 3' are
elapsed from unit stop. If not the machine will delay its
restart till 3' are elapsed with the blinking of the green
LED.
ALARM CONDITIONS
Both the last two
Red LED
are
ON STEADY:
Condenser Sensor OUT OF ORDER.
Both the last two
Red LED
are
BLINKING SLOW:
WATER ERROR
Water level inside the water sump too low after 3' from
the activation of the Water Inlet Valve.
Both the last two
Red LED
are
BLINKING FAST:
RESET MODE: Charging water through the Water
inlet Solenoid Valve after the tripping OFF on WATER
ERROR
The fourth
Red LED
is
ON STEADY: Harvest Cycle
longer then 3' 30"
The fourth
Red LED
is
BLINKING SLOW: TOO HI
CONDENSING TEMPERATURE.
The condenser sen-
sor detected a temperature
> 65°C
The fourth
Red LED
is
BLINKING FAST:
RESET MODE: Condenser Sensor < 50°C Fan motor
in operation for 3' then back on Start Up Cycle Mode
The fifth
Red LED
is
ON STEADY: TOO HI DIS-
CHARGE PRESSURE > 33 bar (460 PSI)
The fifth
Red LED
is
BLINKING FAST:
RESET MODE: After pushing the Reset Button of the
Pressure Control the fan motor starts up first for 3' then
the machine enters on the Start Up Cycle Mode.
The PC Board is also checking the maximum time of
the freezing cycle that changes according to the oper-
ation of the fan motor during the freezing cycle (room
temperature):
• Fan motor in Max. freezing cycle length
ON-OFF mode: equal to 30'
• Fan motor ON Max. freezing cycle length
All the time: equal to 40'
Whenever the machine remains in the Freezing Cycle
for the Maximum time (30 or 40 minutes), the PC
Board moves the unit directly into the Harvest Cycle.
NOTE
: in case of failure of ice level sensor, the
P.C. Board turns - on automatically the unit into
the defrost cycle when the freezing cycle reaches
30 or 40 minutes according to the operation of the
fan motor during the freezing cycle.
GB
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