24
A EVAPORATOR TEMPERATURE SENSOR
The evaporator sensor probe is inserted into its
tube well, which is welded on the evaporator
outlet line, it detects the temperature of the refri-
gerant on the way out from the evaporator and
signals it by suppling a low voltage current flow
to the P.C. Board.
According to the current received, the micro-
processor let the ice maker to continue its ope-
rations or not. In case the evaporating tempera-
ture, after 10 minutes from the unit start-up,
does not go below -1°C (30°F) the evaporator
sensor signals to stop immediately the unit ope-
ration, with the blinking of the
5th Warning
YELLOW LED.
NOTE.
The machine will remain in OFF mode
for one hour then it will restart automatically.
In case the unit trips OFF again in alarm for 3
times in 3 hours, the machine SHUTS OFF
DEFINITIVELY.
To restart the unit after the shutoff caused by
the hi evaporating temperature, it is neces-
sary to switch OFF and ON the power line
main disconnect Switch.
B WATER LEVEL SENSOR
This sensor consists of two small stainless steel
rods vertically fitted on the inner face of the
reservoir cover and electrically connected to
the low voltage circuit of the P.C. Board. When
the cover of the reservoir is positioned in its
place the tips of both the rods dip into the reser-
voir water transmitting a low power current throu
the same.
NOTE.
In the event of
shortage of water
in
the reservoir or, in case the water used is too
soft (de-mineralized) to cause greater resi-
stence to the current flow (electrical conduc-
tivity lower than 30 mS).
This sensor system causes the
shutoff of the
machine,
to protect it from running without
water or with an inadequate water quality. In
this situation the
YELLOW LED
will glow to
warn of the machine shutoff and the reason
why.
C CONDENSER TEMPERATURE SENSOR
The condenser temperature sensor probe, loca-
ted within the condenser fins (air cooled ver-
sion) or in contact with the tube coil (water coo-
led version) detects the condenser temperature
variations and signals them by supplying cur-
rent, at low voltage, to the P.C. BOARD.
In case the condenser temperature sensor
detects a temperature at the condenser lower
than
+3°C (37°F)
that means ambient tempera-
ture too low for the correct unit operation, the
sensor signals to the P.C. BOARD to do not start
up the unit till the ambient temperature rises to
10°C.
In the air cooled versions, in relation to the dif-
ferent current transmitted, the micro processor
of the P.C. BOARD supplies, through a TRIAC,
the power at high voltage to the fan motor. In
the event the condenser temperature rises and
reaches
60°C or 70°C
according to the setting
of DIP SWITCH number 8 the current arriving to
the micro processor is such to cause an imme-
diate and total stop of the machine operation.
NOTE.
The machine will remain in OFF mode
for one hour then it will restart automatically.
In case the unit trips OFF again in alarm for 3
times in 3 hours, the machine SHUTS OFF
DEFINITIVELY.
To restart the unit after the shutoff caused by
the hi condenser temperature, it is necessary
to switch OFF and ON the power line main
disconnect Switch.
COMPONENTS DESCRIPTION
Summary of Contents for F 125C
Page 17: ...15...
Page 35: ...35 WIRING DIAGRAM F 80C Air cooled 220 240 50 1...
Page 36: ...36 WIRING DIAGRAM F 80C Water cooled 220 240 50 1...
Page 37: ...37 WIRING DIAGRAM F 125C Air water cooled 220 240 50 1...
Page 38: ...38 WIRING DIAGRAM F 120 F 200 Air water cooled 220 240 50 1...
Page 39: ...39 WIRING DIAGRAM SF 300 SF 500 Air water cooled 220 240 50 1...
Page 40: ...40 WIRING DIAGRAM SF 500 Air water cooled 400 50 3...
Page 41: ...41 WIRING DIAGRAM SFN 1000 Air water cooled 400 50 3...
Page 47: ......
