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Scotsman CU0415 Technical Training Manual
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Scotsman CU0415 Technical Training Manual

Essential ice
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Technical Training
CU0415, CU0715, CU0920
Essential Ice

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Questions and answers

Anthony Blumhorst
May 10, 2025

Not making ice. Water is running out of clear tube that runs up behind insulated bin

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2 comments:
Anthony Blumhorst
May 10, 2025

@Anthony Blumhorst

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Mr. Anderson
May 20, 2025

The cause could be a leak from the inlet water solenoid valve. This can result in too much water and may cause water to run out of the clear tube behind the insulated bin. Check and replace the valve if needed.

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Summary of Contents for Scotsman CU0415

  • Page 1 Technical Training CU0415, CU0715, CU0920 Essential Ice...
  • Page 2 Presentation Topics • Introduction • Installation • Operation • Cleaning • Diagnostics • Service...
  • Page 3 Introduction • Three basic models – Air cooled, 15 inch wide, 58 lb – CU0415 – Air cooled, 15 inch wide, 80 lb – CU0715 – Air cooled, 20 inch wide, 100 lb – CU0920 • Three electrical configurations – 1 or 115 60 Hz –...
  • Page 4 Ice Type • Medium cube / full dice • Inverted grid evaporator • Dedicated spray jet per cube cell • 45 cubes per cycle – Cubes harvest as a unit...
  • Page 5 Evaporator • Nickel Plated Copper • Mounted inverted above spray platform...
  • Page 6 Refrigeration System • R-134a • Cap tube • Air cooled only – Air in the front and out the front – Fan pressure control switch • No access valves • Common evaporator on all three...
  • Page 7 Water System • Batch type – single fill per cycle – Inlet water solenoid valve • .275 GPM • On during harvest – Standpipe in reservoir • Water pump – Off during harvest • Spray platform • Same parts on all models (non electrical)
  • Page 8 Control System • Temperature initiated, timed cycle – Thermistor on suction line • For freeze and harvest – Controller – Bin thermostat • Opens on temperature fall • Capillary tube in sensing tube in bin – Thermistor in pump hose •...

  • Page 9: Installation

    Installation • Unit supplied with 6 inch legs – 8 inch available – 02-4731-02, set of 4 • Can be floor mounted – Has bumpers on base to keep from damaging floor – Kit available to make sealing to floor easier •...
  • Page 10 Floor Mounting Kits • Kits provide plastic glides and trim strips to attach to base in place of legs 31 ½ • Fills in the half inch of inches space at the bottom • Allow sealing to the floor • Will fit under 34 inch ADA countertop height ½...
  • Page 12 Installation • Minimum clearances when built in – 1/8 inch at sides – ¼ inch at top – 4 inch minimum behind machine – Will make ice at minimum but performance better with more clearance • Electrical – Supplied with power cord •...
  • Page 13 Installation • Water and Drain – all models – Drain is ¾ FPT • Must be vented...
  • Page 14 Installation • Water Connection - 115/60 – ¼ inch OD plastic tubing routed out the back – No fittings are supplied...
  • Page 15 Installation • Water connection - 208-230/60 or 230/50 – Includes water supply hose – Fitting supplied loose in bin – Attaches to 3/8 male flare on back of unit Fitting...
  • Page 16 Component Location Water Pump Water Inlet Curtain Evaporator Cube Deflector Hot Gas Valve Compressor Inlet Water Solenoid Valve Air Inlet Fan Motor Controller and Blade...
  • Page 17 Pre-Start Inspection • Check freezing compartment • Remove any shipping blocks and other materials • Check – Cube deflector – snapped down? – Spray platform – in place? – Curtain – hanging free?
  • Page 18 Inspect Freezing Compartment Shown with cube deflector removed • Move curtain and check • Pull curtain down to its spray platform under normal position. cube deflector. – Jets point straight up.
  • Page 19 Initial Start Up • Turn water supply on – MUST be on first • Remove front panel • Connect electrical power • Switch master switch to ON...
  • Page 20 Start Up • Bin thermostat must be closed to supply power to controller • Unit will start in Harvest mode – Water flows in – Compressor on – Hot gas valve open • Two minutes later freeze cycle begins – Pump and fan ON –...
  • Page 21 Controller Information Ice bridge and harvest time setting indicators Freeze Mode Light Timer Light...
  • Page 23 Cycle Times – Free Standing • CU0415 Note: Cycle times will be – 25 minutes at 70/50 longer when built into a – 38 minutes at 90/70 cabinet • CU0715 – 17 minutes at 70/50 – 25 minutes at 90/70 •...
  • Page 24 Time to initially fill bin • 70/60 conditions to first shut off – CU0415 – 13 hours – CU0715 – 8 hours – CU0920 – 9 hours • Commonly restarts for more run hours after first shut off...
  • Page 25 Ice Bridge 3/16...
  • Page 26 Adjustments Increase or Decrease Bridge Thickness Increase or Decrease Harvest Time...
  • Page 27 Correct Settings • Bridge Thickness – Must release ice as a unit, bridge will be about 3/16 inch and there will be a hollow part in the cube • Harvest Time – Must continue long enough to release the ice, plus 10 to 20 seconds more.

  • Page 28: Factory Settings

    Factory Settings Ice Bridge Ice Bridge Harvest Harvest Lights on Lights Lights on Lights STEADY BLINKING STEADY BLINKING CU0415 CU0715 CU0920...
  • Page 29 Ice Bridge and Harvest Time Settings • 10 settings on 5 lights each • 1 blinking is minimum, 5 steady is maximum – Steady light = 2 – Blinking light = 1 – Examples • 3 lights on steady = 6 •...
  • Page 30 Internal Timings • Freeze timer (timer light on) – 7 minutes, starts when evaporator thermistor temperature falls to preset point • Harvest timer (timer light on) – 20 seconds, starts when evaporator thermistor temperature warms to preset point • Minimum harvest time –...
  • Page 31 How It Works – Starting / Restarting • Closed bin thermostat and Master Switch to the ON position power compressor and controller – 2 minute harvest cycle (adds water), then freeze begins – Fan off until discharge pressure builds to 150 PSIG –...
  • Page 32 How It Works • Harvest cycle – Pump off – Fan off – Hot gas valve on – Inlet water solenoid valve on – Cycle continues until suction line temperature warms to preset point, triggers timer in controller to end the cycle •...
  • Page 33 Cleaning and Maintenance...
  • Page 34 – Manual harvest, releases any ice on the evaporator • Switch unit off, discard all ice. • Drain reservoir by pulling the drain plug and then putting it back. • Mix 5 oz of Scotsman Clear 1 scale remover and 2 ½ quarts of warm water.
  • Page 35 Reservoir Drain Plug...
  • Page 36 Scale Removal • Pour solution into the reservoir • Move master switch to the Wash position – Pump will be on • Operate for 10 minutes or more, then move switch to OFF. • Drain reservoir. • Remove spray platform, inspect all jets, clear any that are restricted...
  • Page 37 Spray Platform Inlet engages clip in reservoir, pull forward to remove...
  • Page 38 Spray Platform Assembly...
  • Page 39 Sanitize • Use locally approved sanitizer – Mix one packet of Stera Sheen Green Label with 2 gallons of warm water – Fill empty reservoir with sanitizer – Move master switch to Wash for 2 minutes – Drain reservoir into bin –...
  • Page 40 Maintenance and Cleaning • Clean air cooled condenser – Vacuum and brush dirt from fins...
  • Page 41 Service Diagnosis • No ice – No water, check water filters and supply to unit – No water, check inlet water solenoid valve – Nothing operating, check power to unit – Nothing operating, check bin thermostat – Nothing operating, check master switch position –...
  • Page 42 Service Diagnosis • No ice, compressor and fan are on, pump not spraying water – Check for water in reservoir • Check drain plug for leaks – Check for pump hose disconnected – Check pump motor voltage. If none and blue Freeze mode light is ON, wait 30 seconds.
  • Page 43 Service Diagnosis • No ice, pump spraying water, fan motor and compressor are off – Master switch in Wash position • No ice, pump spraying water, compressor on, fan motor not turning – Fan motor open, no power or stuck –...
  • Page 44 Service Diagnosis • No ice, everything operating, poor spray to evaporator – Partial water fill in reservoir – Spray platform leaking or jets restricted • Check / Clean spray platform • No ice, everything operating, good spray to evaporator – Too much water, check inlet water solenoid valve for leak thru...

  • Page 45: Service Diagnosis

    Service Diagnosis • No ice, everything operating, water in reservoir is hotter than supply water – Hot gas valve not shutting off / leaks thru • No ice, everything operating – No refrigeration, check suction line temperature, should begin to chill during freeze mode •...
  • Page 46 Service Diagnosis • No ice in bin, evaporator has ice on it, does not release in time – Very cold water supply, increase harvest time – Damaged evaporator, check plating • No ice, compressor is off – Compressor relay failure, check current relay –...
  • Page 47 Service Diagnosis • Makes ice, but ice is cloudy or not completely formed – Spray jets restricted, clean machine – Lack of rinse water due to hot room temperature • Adjust harvest time longer to drain more water • Makes ice but they are blocks or shells –...
  • Page 48 Evaporator Thermistor • Typically triggers timer at about 3.3 degrees F. – 76,790 ohms • If thermistor is out of range, open or shorted controller operates on preset freeze and harvest times – Signal of evaporator thermistor failure is all green lights on controller blink together –...
  • Page 49 Service Diagnosis • Makes ice but does not fill the bin, cycle times are correct – Bin thermostat opens and shuts machine off before bin is full, check room temperature • Adjust thermostat if room is below 60 degrees F. •...
  • Page 50 Service Diagnosis • Makes ice but does not fill the bin, cycle times are too long – Air cooled condenser is dirty, clean it – Too much water, inlet water valve leaks thru – Air flow restricted • Placed in closet or other very small room? –...
  • Page 51 Replacement of Selected Components • Curtain – Remove top panel – Remove evaporator cover – Pull curtain up and out of its slot...
  • Page 52 Replacement of Selected Components • Cube Deflector – Lift up at reservoir edge, twist slightly and pull out – Snaps onto reservoir edge...
  • Page 53 Replacement of Selected Components • Water Pump – Disconnect power – Remove top panel – Remove pump cover – Disconnect wires and pump hose – Rotate pump CW and pull up and...
  • Page 54 Replacement of Selected Components • Bin Thermostat – Disconnect power – Remove front, top and left side panels – Pull capillary tube out of sensing tube – Pull capillary tube into bottom of unit – Disconnect wires at thermostat and remove thermostat from unit...
  • Page 55 Replacement of Selected Components • Inlet Water Solenoid Valve – Shut water & power off – Remove • top, front, back and right side panels • Utility panel • screws holding valve bracket to utility panel • screws holding valve to bracket –...
  • Page 56 Cabinet Removal • Remove front, back, side and top panels Remove • Remove door • Drain water, disconnect power and water • Pull thermostat cap tube • Remove evaporator cover...
  • Page 57 Cabinet Removal • Remove screws holding evaporator to its frame. • Lift evaporator up and out of the way – Support as needed...
  • Page 58 Cabinet Removal • Disconnect wires from water pump • Remove thermistor from pump hose • Disconnect bin drain hose • Disconnect water supply hose from evaporator platen...
  • Page 59 Cabinet Removal • Lift bin with reservoir Deck Cover off the deck • Remove deck cover...
  • Page 60 Cabinet Removed...
  • Page 61 Questions?

This manual is also suitable for:

Cu0715Cu0920