Scotsman SCE275 - Manual (Page 16)

SCE275
January 2003
Page 16
How The Electronic Cuber Works
Controller Inputs:
1. Reservoir water temperature. This is measured
by a thermistor located in the water pump outlet.
2. Discharge line temperature. This is measured by
a thermistor located on the compressor discharge
line.
3. Water level. This is measured by an infrared
sensor and float. The float rises and falls with the
water level, and switches the sensor on and off as
it moves.
4. Bin fill level. This is determined by a set of
electric eyes between the evaporators. Ice
eventually fills the bin and covers the cube
deflector to the point that ice is between the bin
controls (and the evaporators); after 20 seconds of
“blockage” the bin controls signal the controller that
no more ice is needed.
When ice is removed for use,
the ice between the
evaporators slides out into
the bin and the ice machine
automatically restarts.
Note: A few cubes may
remain on the cube deflector,
this is normal.
If little ice is used, the ice
level will be high at the back
of the bin. As ice is used, the
ice will “level out” and fill the
bin more evenly.
5. Time. The controller measures and compares
how long it takes for various events to happen. It
stores that data for future reference.
Controller Outputs:
A. 24 volt:
1. LEDs
2. Inlet water valve
3. Hot Gas Valve
4. Contactor Coil
B. High Voltage
1. Water Pump
2. Air cooled Fan Motor
When The Machines Fills Up To Its
Shut Off Point, Ice Will Be On The
Cube Deflector.