ICE TECH SS / SP Technical Service
Manual
4
1.2. Description
Main Features of the Machine
Anti-blocking spray nozzles.
Pump without seals.
High pressure safety pressostats even in air-cooled machine.
Large condensers (work well at high ambient temperatures; and reduce cooling water
consumption in water-cooled machines).
Transparents cubes.
1.3. Operating principle
WHEN SWITCHING ON THE MACHINE FOR THE FIRST TIME, THE MACHINE SHOULD BE
PLACED ON THE DEFROSTING STAGE. To do so, turn the wheels on the timer until the
microswitches are depressed. At this moment, the compressor is working; the water inlet valve
and hot gas inlet valve are both open. The water bin fills with water, any excess is lost via the
maximum level overflow. After a period of time controlled by the timer (3-4 minutes usually), the
hot gas valve and water inlet valve are closed. The pump then sends water to the evaporator
where the ices cubes are gradually formed.
The evaporation temperature SPowly descends until it reaches the thermostat set point, which
sets off the timer at this temperature for about 16 minutes. Once this time has elapsed, the
defrosting stage (3-4 minutes) begins. The pump is off and the hot gas and water valves are open.
Some water is sent to the top of the evaporator to help the cubes unstick.
Once the defrosting stage is over, the cycle begins again, and so it continues until the bin is full
of ice, and contact between the bin thermostat situated at the top of the bin and the ice will stop
the machine. The bin thermostat will never stop the machine in mid-cycle.
OPERATING PRINCIPLE FOLLOWING THE ELECTRIC DIAGRAM (TIMER ON DEFROST -
MICROSWITCHES DEPRESSED)
Current reaches the machine via the line connecting the blue (1) and brown (4) terminals. The
brown wire connects the compressor and timer motor. The blue wire connects bin thermostat T1
