Scotsman DCE33 Technical Training Manual
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Scotsman DCE33 Technical Training Manual

Ice machine
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DCE33 Ice Machine

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Summary of Contents for Scotsman DCE33

  • Page 1 Technical Training Technical Training DCE33 Ice Machine...
  • Page 2 DCE33 DCE33 • Gravity Drain or • Drain Pump models • Reversible Door • Air in and out the front...
  • Page 3 DCE33 Installation DCE33 Installation • Water – 1/4” OD copper tubing • Power – 115/60/1 cord connected • Drain – Gravity or pump • Space – 15 & 1/4” wide...
  • Page 4 DCE33 Installation DCE33 Installation • Air Cooled – Route drain tubing – Route water supply Water Connection...
  • Page 5 DCE33 Gravity Drain DCE33 Gravity Drain • Gravity Drain installation is critical – Connect internally to bin drain – Route flexible tubing out the back – Route with downward pitch to drain receptacle - no dips, no upward slopes, no traps.
  • Page 6 DCE33 Drain Pump DCE33 Drain Pump • Magnetic drive drain pump • Tubing included – Do NOT kink! • Can pump up to one story • Field convertible...
  • Page 7 Water: It flows downhill! Water: It flows downhill! Water Cannot Collect in a Downward Sloping Straight Tube Water CAN collect in a Downward Sloping Flexible Tube Trapped water restricts draining!

  • Page 8: Reversing Door

    Reversing Door Reversing Door • Remove door • Switch hinges top to bottom, left to right • Return door to cabinet...
  • Page 9 DCE33 Initial Start Up DCE33 Initial Start Up • Check installation • Remove control box cover • Rotate timer CW to Harvest • Rotate bin control to “Operating Timer in Range” Harvest • After second batch, check cube Position size...
  • Page 10 DCE33 DCE33 Cubes too large or too small: Adjust cube size control. CW makes cubes larger CCW makes cubes smaller...
  • Page 11 Cube Size: Only 1 Correct Size Cube Size: Only 1 Correct Size 1 1/4” 1 1/2” Too Big Just Right! Too Small...

  • Page 12: Component Location

    Component Location Component Location Front View, without cabinet. Curtain Reservoir Spray Jets Overflow Drain Hose Inlet Water Valve Bin Stat Cube Size Control Condenser...
  • Page 13 Front View, Pump Model Front View, Pump Model Drain Pump Timer Pump Switch...

  • Page 14: Right Side View

    Right Side View Right Side View Condenser Fan Shroud Fan Motor...

  • Page 15: Left Side View

    Left Side View Left Side View Hot Gas Valve Drain Pump Discharge Drain to Pump Drain Hose to Pump Pump Motor Switch...

  • Page 16: Back View

    Back View Back View Water Fill Tube Water Pump Suction Line/Accumulator Hot Gas Tube Bin Thermostat Capillary Tube Compressor...
  • Page 17 Spray Area Spray Area Jet Base Jet Cap Spray Jet Spinner Cube Deflector...
  • Page 18 Curtain Curtain • Clear, thin plastic sheet – Flip up to access jets • Hangs from plastic frame • Frame is attached with 4 screws • Must not be curled or torn...
  • Page 19 Water Pump & Reservoir Water Pump & Reservoir Pump Fan Pump Relief Reservoir Overflow Pump Discharge Pump Intake...

  • Page 20: How It Works

    How It Works How It Works • Water flows in during harvest • Harvest cycle is timed – Pump is off – Fan is off – Compressor is ON – Hot gas and Water valves are ON • When the timer cam pushes in the switch button, the freeze cycle starts.

  • Page 21: Freeze Cycle

    Freeze Cycle Freeze Cycle • At the beginning of freeze – Fan is ON – Pump is ON – Compressor is ON – Timer is OFF – Hot gas and water valves are OFF...

  • Page 22: Cube Size Control

    Cube Size Control Cube Size Control • Reverse acting Top View of Evaporator thermostat – Senses evaporator temperature – Closes upon temperature fall – Connects power to timer motor – Timer cam rotates to finish the cycle Cube Size Bulb Cube Molds...
  • Page 23 Cube Size Thermostat Cube Size Thermostat Timed Freeze Beginning Freeze...
  • Page 24 DCE33 Wiring Schematic DCE33 Wiring Schematic Drain Pump Motor Water Spray Timer Solenoi Pump Motor Solenoi Motor Motor Drain Pump Power Pressure Supply Switch Compress Drain Pump Safety Switch Cube Size Bin Level Timer Thermost Thermost Switch...
  • Page 25 Beginning Freeze Beginning Freeze Power Supply Bin Thermo Water Pump Timer Switch Comm Fan Motor Water Valve Hot Gas Valve Timer Motor Cube Size Thermo...
  • Page 26 Timed Freeze Timed Freeze Power Supply Bin Thermo Water Pump Timer Switch Comm Fan Motor Water Valve Hot Gas Valve Cube Size Thermo Timer Motor...
  • Page 27 Harvest Harvest Power Supply Bin Thermo Water Pump Timer Switch Comm Fan Motor Water Valve Hot Gas Valve Timer Motor Cube Size Thermo...
  • Page 28 Timer Timer • Timer Controls end of Freeze cycle and Harvest cycle • Shown in Harvest Position • Clockwise ONLY! Microswitch Acutator Button...
  • Page 29 Cube Size Control Cube Size Control • Cube Size Thermostat controls timer motor • Rotate Adjustment Screw Clockwise to make LARGER cubes – Delays start of timer motor Cube Size Adjustment...

  • Page 30: Ice Level Control

    Ice Level Control Ice Level Control • Bin Thermostat Bin Thermostat Cap Tube Holder...

  • Page 31: Maintenance

    Maintenance Maintenance • Frequency depends upon conditions • Water System Cleaning – Spray Jets – Curtain Inspection • Water System & Bin Sanitizing • Air Cooled Condenser Cleaning...

  • Page 32: Water System Cleaning

    Water System Cleaning Water System Cleaning • Switch Unit OFF • Discard old ice • Pour 4 ounces of Scotsman Ice Machine Cleaner into Reservoir • Switch Unit ON • Operate for 2 hours • Rinse bin with hot water...

  • Page 33: Spray Jets

    Spray Jets Spray Jets • All Orifices must Jet Cap be open • Remove jet cap Spinner Jet Base to confirm – Do NOT rotate base!
  • Page 34 Sanitizing Sanitizing • Mix Sanitizer – One ounce of household bleach to Two gallons of potable water will produce a sanitizing solution – Spray or wash all interior surfaces of the bin and door with the sanitizing solution – Pour excess down the bin drain –...

  • Page 35: Service Diagnosis

    Service Diagnosis Service Diagnosis • Cubes are mal-formed – Check spray jets – Check curtain – Check water fill • Water supply • Inlet Water Valve • Water Filters (if used)
  • Page 36 Service Diagnosis Service Diagnosis • Cubes are mal-formed – Water may be leaking out of reservoir • Check pump hoses • Check curtain...
  • Page 37 Service Diagnosis Service Diagnosis • Low Capacity – Normal capacity takes about 24 to 36 hours to fill up & shut off after start up • If slow, check cube count – Should be 8 full cubes • Check cycle time –...
  • Page 38 Service Diagnosis Service Diagnosis • Makes too much noise – Check fan blade for shroud contact – Check pump fan for foil contact (loose foil) • Foil no longer used – Check back panel for loose screws – Check pump for tight bearings...
  • Page 39 Service Diagnosis Service Diagnosis • Does not make ice - nothing working – Bin thermostat open – Pump model pressure switch open • Water backed up and pump not running • Pump and fan on, compressor not – Check compressor and start relay...
  • Page 40 Service Diagnosis Service Diagnosis • Compressor, fan and pump on, water spraying, no ice – Cube size thermostat not closing • Too much heat load from water leaking through inlet water valve • Can’t reject heat due to dirty condenser •...
  • Page 41 Service Diagnosis Service Diagnosis • Makes partial cubes – Spray jet dirty – Water level low – Water trapped on top of evaporator • Weep hole restricted – Low charge because of a refrigerant leak...
  • Page 42 Refrigeration Refrigeration • R-134a system – Uses Tecumseh compressor (1/8 HP) – Hot gas bypass to defrost evaporator during harvest – 5 ounce charge – Do not connect high side gauge - too much charge will go into the hose! –...

  • Page 43: Condensing Unit

    Condensing Unit Condensing Unit...
  • Page 44 DCE33 Summary DCE33 Summary • Compact ice machine • Can be built in • Pump or Gravity Drain model – Drain pump is magnetic drive - no leaks! • Reversible Door • 8 cubes per cycle • Makes commercial quality ice...

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