NOTE. It is very important to make sure of the
correct fitting of the cover on the reservoir in
order to enable the sensor to efficiently control
the water situation avoiding undue shutoff
interventions.
J. FREEZING CYLINDER or EVAPORATOR
(Two on SPN 1205 Model)
The freezing cylinder is made of a stainless steel
vertical tube on which exterior is wrapped around
the cooling coil with the evaporating chamber
and in its interior is located the auger which
rotates on its vertical axis and it is maintained
aligned by the top and bottom bearings. A water
seal system is located in the bottom part of the
freezer while at the top end is fitted the ice
breaker.
The water constantly flowing into the cylinder
bottom part, freezes into ice when in contact with
the cylinder inner walls. The ice is then lifted up
by the rotating auger and compacted and forced
out by the ice breaker.
K. ICE BREAKER (Two on SPN 1205 Model)
The ice breaker is fitted in the freezer upper part
it has, on SPN 125-255 Model, two breaker teeth to
break the ice and with its slanted shape from the
rear tooth to the front one it compacts and forces
the ice out in an horizontal way.
On the other models the ice breaker is made by
several rectangular openings where the ice is
forced to pass through.
By undergoing this, the ice looses its excess of
water content so it drops into the bin in hard dry
bits of ice.
In the ice breaker it is housed the top bearing
which is made of two rolls bearings positioned to
withstand the auger axial and radial loads. This
bearing is lubricated with a food grade - water
resistant grease.
NOTE. It is advisable to check the conditions
of both the lubricant grease and the top
bearing every six months.
L. GEAR MOTOR
(Two on SPN 1205 Model)
The gear motor is made of a single phase electric
motor with permanent capacitor directly fitted on
a gear box.
The drive motor rotor is kept aligned on its
vertical axis by two ball bearings permanently
lubricated. The gear case contains a train of
three spur gears with the first one in fiber to limit
the noise level. All the three gears are encased
in case roller bearings and are covered by
lubricant grease (MOBILPLEX IP 44).
Two seal rings, one fitted on the rotor shaft and
the other on the output shaft keep the gear case
sealed.
The interior can be inspected and serviced by
unbolting the two halves of the aluminium gear
case housing.
M. FAN MOTOR (Air cooled version)
The fan motor is controlled through the TRIAC of
the P.C. BOARD by the condenser temperature
sensor. Normally it operates to draw cooling air
through the condenser fins.
In cold ambient situation, the fan motor can run
at intermittance as the condenser pressure must
be kept between two corresponding head
pressure values.
N. WATER REGULATING VALVE
(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
valve opens to increase the flow of cooling
water.
O. 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.
Page 29
To Next Page
Loading...
