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REFRIGERANT METERING DEVICE:
capillary tube
REFRIGERANT CHARGE (R 134 A)
Air cooled
Water cooled
AC 106
320 gr (11.0 oz.)
250 gr ( 9.0 oz.)
AC 126
450 gr (16.0 oz.)
300 gr (10.5 oz.)
AC 176
450 gr (16.0 oz.)
330 gr (12.0 oz.)
REFRIGERANT CHARGE (R 404 A)
Air cooled
Water cooled
AC 206 (50Hz) 490 gr (17 oz.) 400 gr (14 oz.)
0,
AC 206 (60Hz) 515 gr (18 oz.)
* * *
AC 226 (50Hz) 620 gr (22 oz.) 500 gr (17,5 oz.)
AC 226 (60Hz) 520 gr (18 oz.)
* * *
COMPONENTS DESCRIPTION
A.
GREEN MASTER SWITCH PUSH
BUTTON
Located in the front of the machine it’s used to
switch ON and OFF the unit by pushing its green
push button. When ON, its green light is ON as
well.
B.
RED ALARM/RE-SET PUSH BUTTON
Located in the front of the machine (just beside
the Master Switch) it works in conjuction with the
Cleaning Remind Board and it’s activated when:
• Consensing temperature is higher then 70
°
C
(air cooled version) - ON steady with machine
in OFF mode
• Condensing temperature is higher then 60
°
C
(water cooled version) - ON steady with
machine in OFF mode
• Condenser sensor out of order - Blinking twice
and repeat with machine in OFF mode
• Condenser air filter need to be cleaned - ON
steady with machine in ON mode
• Water system need to be cleaned - Slow
blinking with machine in ON mode.
On the first two cases it’s possible to Re-Set the
operation of the machine pushing and hold the
Red Alarm Re-Set Button by 5" till the Red Light
is OFF.
On the third case, it’s necessary first to replace
the condenser sensor then, push and hold for 5"
the Red Re-Set Button.
C.
EVAPORATOR TEMPERATURE
SENSOR
The evaporator temperature sensor probe, located
in contact with the evaporator serpentine, detects
the dropping of the evaporator temperature during
the freezing cycle and signals it by supplying a
current flow to the micro processor of P.C.
BOARD.
According to the current received is energized
the small Red LED of the PC Board (blink or
steady). When steady, the micro processor
supplies power to the electronic timer built into
the P.C. BOARD so that it takes control of the last
portion of freezing cycle.
The length of the timed phase is pre-fixed by the
setting of the keys 1, 2, 3 and 4 of the DIP
SWITCH.
NOTE. Whenever, after 15 minutes from the
beginning of the freezing cycle, the
evaporating temperature have not yet
reached the value of 0
°
C (32
°
F) - small Red
LED OFF - the P.C.Board switches OFF the
machine with the BLINKING of WARNING
RED LED.
D.
CONDENSER TEMPERATURE SENSOR
The condenser temperature sensor probe,
located within the condenser fins (air cooled
version) or in contact with the tube coil (water
cooled version) detects the condenser tempe-
rature variations and signals them by supplying
current, at low voltage, to the P.C. BOARD.
In the air cooled versions, in relation to the
different current received, the micro processor of
the P.C. BOARD supplies, through a TRIAC, the
power at high voltage to the fan motor so to cool
the condenser and to reduce its temperature.
In case the condenser temperature rises and
reaches 70
°
C (160
°
F) - on air cooled models - or
60
°
C (140
°
F) - on water cooled models - the
current arriving to the micro processor is such to
cause an immediate and total stop of the machine
operation.
E.
ICE BIN LEVEL LIGHT CONTROL
The electronic ice bin level control, located into
the storage bin, has the function to stop the
operation of the ice machine when the light beam
between the light source and the sensor is
interrupted by the ice cubes stored into the bin.
When the light beam is interrupted the Bin Full
YELLOW LED starts to blink; in case the light
beam is constantly interrupted for more than 60
seconds, the ice machine stops with the glowing-
up of the Bin Full YELLOW LED to monitor the
situation of ice bin full.
The 60 seconds of delay prevent that an ice
scoop movement or the ice dropping through the
ice chute (interrupting for a while the light beam)
can stop the operation of the unit.
Six seconds after the scoop out of the ice (with
the resumption of the light beam between the
two infrared sensor of ice level control) the ice
machine restarts again with the extinguishing of
the YELLOW LED.
