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Scotsman UC2024 Technical Service Training
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Scotsman UC2024 Technical Service Training

Scotsman UC2024 Technical Service Training

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Technical Service Training
UC2024 and UC2724

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Summary of Contents for Scotsman UC2024

  • Page 1 Technical Service Training UC2024 and UC2724...

  • Page 2: Service Support

    Service Support Technical Service 1-800-533-6006 Check out our mobile ready website www.scotsman-ice.com/service...
  • Page 3 Technical Service Virtual Business Card...
  • Page 4 Training Agenda • Introduction • Installation • Operation • Maintenance • Diagnostics • Taking the unit apart...
  • Page 5 UC2024 and UC2724 • Cubed Ice Making – 24 inches wide – 39 inches high including legs – Air or Water Cooled – Airflow in and out of the front...

  • Page 6: Component Location

    Component Location Air Filter...
  • Page 7 Component Location Ice Storage Bin Control Box Fan Motor...
  • Page 8 Component Location Slide Out Electrical Box Contactor Transformer Controller Lights and Buttons Master Switch...
  • Page 9 Component Location Drain Hose...
  • Page 10 Component Location Back Panel Area Power Cord Water Valve Pump Drain Compressor...
  • Page 11 Component Location Side Views Flap Switch Evaporator Thermistor...
  • Page 12 Component Location Evaporator Water Distributor Ice Chute Ice Sensing Flap...
  • Page 13 Component Location Overflow Standpipe...
  • Page 14 Component Location Water Distributor Snaps In / Out Back View of Distributor / Spray Bar...
  • Page 15 Component Location Ice Chute Ice Chute...
  • Page 16 Component Location Ice Sensing Flap Flap Open (Freeze) Magnet Flap Closed (Harvest or Bin Full)
  • Page 17 Component Location Ice Sensing Flap and Switch...
  • Page 18 Installation - Utilities • Recessed area – Power cord • 5-15P plug – Water fitting • 3/8” FPT inlet on 60Hz • Remember to flush the line! – Drain fitting • 3/4” FPT • Vent horizontal runs...
  • Page 19 Water Filtration and Treatment • Taste and Odor Filters – Use if water has objectionable taste – This type contains activated carbon – T&O Filters remove chlorine • Chlorine frequently added by water treatment plant to kill bacteria • Risk of increased bacteria growth by using a Taste and Odor filter –...

  • Page 20: Installation

    Installation • Place in planned location – Must have water, drain and power nearby • Level the unit – Use the included legs • Leg thread is 5/8 – 11 – Or seal the cabinet to the floor • Rubber bumpers on the bottom reduces floor damage...

  • Page 21: Pre-Start Check

    Pre-Start Check • Remove front panel • Remove shipping block under fan motor bracket • Check for any other shipping materials...

  • Page 22: Installation - Start Up

    Installation – Start up • Turn on water supply – Confirm no leaks • Connect power, move master switch to ON – Anti-Slush light blinks for 90 seconds – After that, the unit will move to Harvest mode for 90 seconds •...
  • Page 23 Installation – Start up • Check bin control for shut off – Move flap to closed and then open – See the Bin Full light blink • Pour water in bin, check draining • Return front panel to unit...
  • Page 24 Controller • Four Status Lights – Timer – Freeze – Bin Full – Anti-Slush • Ice Bridge Thickness Degree Lights – More lights = Thicker Ice...
  • Page 25 Ice Thickness Degree Lights • 10 settings on 5 lights • 1 blinking is minimum, 5 steady is maximum – Steady light = 2 – Blinking light = 1 • Examples – 3 lights on steady = 6 – 3 lights steady, 1 blinking = 7 •...
  • Page 26 Normal Bin Full...
  • Page 27 UC2024 Operation R-134a (PSIG) Conditions Suction, just Max Discharge Cycle Time Freeze Cycle Harvest Cycle before harvest in harvest (minutes) (minutes) (seconds) (minutes) (seconds) 70/50 6 - 7 15 - 16 14 - 15 90/70 6 - 7 19 - 20...
  • Page 28 (seconds) 70/50 3 - 4 52 - 54 13 - 14 12 - 13 90/70 4 - 5 65 - 68 17 - 18 16 - 17 Model Compressor Amps UC2024 6 – 6.5 Data is for new, clean machines...
  • Page 29 Example Cycle System Pressures 70/50 Time Suction Discharge...
  • Page 30 Example Superheat Superheat, Degrees F Time...

  • Page 31: Maintenance

    Maintenance • Flush out drain • Clean Filter - Pull air filter out – Wash off, dry and return – Also in water cooled • For appearance only...

  • Page 32: Water System Maintenance

    Water System Maintenance • Scale Removal • Sanitizing...

  • Page 33: Scale Removal

    Scale Removal • Remove front panel • Move master switch to OFF • Discard ice • Drain sump...
  • Page 34 Scale Removal • Drain water system – Pull sump drain hose plug – Reconnect hose plug when done...
  • Page 35 Scale Removal • Mix a solution of 5 oz or 150 cc of Scotsman Clear 1 Scale Remover and 2.5 quarts or 2.4 liters of clean, warm potable water. • Do NOT mix any stronger!
  • Page 36 Scale Removal • Remove water distributor and ice chute from unit. • Wash them with the scale remover solution and return them to the unit.
  • Page 37 Scale Removal • Pour the scale remover mixture into the sump...
  • Page 38 Scale Removal • Move the master switch to Wash • Operate the unit in the Wash mode for 20 minutes or more • Move the master switch to OFF...
  • Page 39 Scale Removal • Drain water system – Pull sump drain hose plug – Reconnect hose plug when done...
  • Page 40 Scale Removal • Check water distributor for any remaining scale, repeat cleaning if needed. • Wash the bin with scale remover solution. • Flush the bin drain with hot water.
  • Page 41 Sanitization • Use locally approved sanitizer. – Mix 2 to 2.5 gallons of solution per directions of the sanitizer – Pour sanitizer solution into sump until full – Move master switch to Wash – Operate the unit in Wash for 10 minutes –...
  • Page 42 Sanitization • Drain water system – Pull sump drain hose plug – Reconnect hose plug when done...
  • Page 43 Sanitization • Move master switch to ON to restart ice making • Make a batch of ice • Pour hot water into bin to melt ice until ice is gone • Reattach all panels...
  • Page 44 Sources of Ice Machine Service...
  • Page 45 Diagnostics • No Ice – No water in sump • Check for – Plugged water filter – Inlet water solenoid valve not opening...
  • Page 46 Diagnostics • No Ice – All components operating • Check for – Inlet water valve leaks through – Hot gas valve leaks through • Water is warm...
  • Page 47 Diagnostics • No Ice – In freeze, anti-slush light is OFF – Water in sump – No water over evaporator • Water is part of the recipe! – Check pump • Move master switch to Wash • Check for water over plate, if none, check voltage at pump •...
  • Page 48 Diagnostics • No Ice – Bin full light is ON: False bin full • Check for – Flap in closed position – Flap switch stuck closed • Note: Labeled curtain switch in wiring diagram...
  • Page 49 Diagnostics • Makes ice, but much too large or too small • Check for – Cube size set to incorrect size – Thermistor failure • Operating on timed cycles • Indicated by all cube size and harvest time lights are flashing...
  • Page 50 Diagnostics • No ice in bin – Makes ice, but does not release from plate • Check for – Ice bridge too large – Hot gas valve not opening – Evaporator plate damaged...
  • Page 51 Diagnostics • No ice – Air cooled fan not turning • Check for – Open windings on fan motor – Seized fan motor – Fan pressure control not closing • opens at 100 PSIG, auto reset closed at 150...
  • Page 52 Diagnostics • No ice – Unit in ice making mode (freeze light is ON) but contactor is not pulled in • Check for – Open contactor coil – No power to contactor from controller – High pressure cut out open •...
  • Page 53 Diagnostics • No ice – Compressor off, pump forcing water over evaporator • Check for – Overheating • Low charge • High superheat – Contactor coil open – Compressor not starting • Start relay or PTCR • Start capacitor • Motor windings...

  • Page 54: Test Mode

    Test Mode • To use test mode (pump will be off in Test Mode): Place both thermistor probes in 32 o F. water. – – Push and hold the left plus (+) button and the lower right minus (-) button for at least 5 seconds.
  • Page 55 Taking the Unit Apart • Remove front panel • Drain water system...
  • Page 56 Taking the Unit Apart • Remove top panel – Three thumb screws at back – Push panel back slightly – Lift up and off...
  • Page 57 Taking the Unit Apart • Bin is not removable • Removing left, right and back panels helps with access • Water inlet solenoid valve is at the back • Hot gas valve is at the back • TXV is at the back...
  • Page 58 Taking the Unit Apart • Flap/Curtain switch is under the right side panel...
  • Page 59 Taking the Unit Apart • Water thermistor is at the back • Water pump is at the back • Evaporator thermistor is under the left panel...
  • Page 60 Taking the Unit Apart • Water pump...
  • Page 61 Taking the Unit Apart • Evaporator...
  • Page 62 Taking the Unit Apart • Compressor – Behind lower back panel...
  • Page 63 Taking the Unit Apart • Fan – Removable from the front and with the left panel off – Access holes for easy access to back screws...
  • Page 64 Technical Service: 1-800-533-6006 www.Scotsman-ice.com...
  • Page 65 Questions?

This manual is also suitable for:

Uc2724