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C2648 - Scotsman Ice Systems

1. Page 11 Temperature Sensors 00 0 eae Page 46 Coupling Instructions 04 Page 12 Water PUMPS cre yea ore eee eee Page 47 Plumbing Requirements Page 13 Purge vales ss sian daaadge nated bodesen ox Page 48 ElCCIICAl aeeoa es Bea ee nE eS Page 14 Compressor contactor 0 00 Page 49 Final Check List 2 2 0 0 eee eee Page 15 Pressure switch 0 0 0 0 00 cee eee eee Page 50 Initial StartUp 2 ee Page 16 Liquid Line Solenoid 00005 Page 51 Adjustments 0 00 00 cee eee ee Page 17 Inlet Water Solenoid Valve Page 52 Use and Operation 0 00000 e nee Page 18 Harvest Assist 0 0 0000 e eee eee Page 53 Switch Panel Area 0 2 00 ee eee Page 19 Reservoir Removal 0000000 eae Page 54 Options and Other Information Page 20 Controller Differences 04 Page 55 Cleaning Sanitation and Maintenance Page 21 Thermistor Values 00000 0c eee Page 56 Remote condenser and other maintenance Page 23 Performance Information Page 57 What to do before calling for service Page 24 Repair Procedures 00000 e ee eaee Page 58 Overall System Types 2000 000 Page 25 Harvest Assiste esnean rini esia eee Page 59 Controller Information nasaan aaea Page 26 Ice thickness sensor 0 000 eee Page 60 Controller Information
2. 04 Page 27 Contactor or Controller 04 Page 61 How It WorkS 00000 e eee Page 28 Curtain or Curtain Switch Page 62 Electrical Sequence Remote Cooled Page 29 Purge Valve or Water Level Sensor Page 63 Electrical Component Details Page 30 Water pumpS 200000 eee Page 64 Electrical Component Details Page 31 Evaporator 2e022 s c4006 cieeearaeedaes Page 65 Component Indicator Light Table Page 32 Compressor 1 2 0 00 eee Page 66 Refrigeration 0 0 000 e eee eee Page 33 Thermostatic Expansion Valve Page 67 Refrigeration Schematic Page 34 Water System s22ey02g 2G oh dade Eee Page 35 Control Operation 0 00200 eee Page 36 Control Safeties 0 000 002 eee Page 37 ROStaMS sada hoodia gate ga ad HERG ASS Page 38 January 2015 Page 2 C2648 Prodigy and Prodigy Plus Service Manual Installation Product Specifications Location Limitations This ice system is made up of three parts the ice making machine or head the remote condenser and the interconnecting tubing The ice making machine must be installed indoors in a controlled environment Space must be provided near the machine for service access The remote condenser may be installed above or below the ice machine per the limits stated later in this manual The remote condenser may be installed
3. SW2 and the Period in the display code A curtain switch light is ON when a curtain is either open or not present January 2015 Page 18 C2648 Prodigy and Prodigy Plus Service Manual Switch Panel Area The On and Off switches are front accessible at the lower left corner Switch Door O alg Auto Ale olo blg S Sanitize icator Lights To switch the machine OFF push and release the Off button The machine will shut off at the end of the next cycle To switch the machine ON push and release the On button The machine will go through a start up process and then resume ice making Control Options There are two optional field installed controls that can be on this machine e KVS Adjustable ice level control e KSBU Advanced Feature control Adjustable ice level control optional When this option is present there is an adjustment knob and an additional indicator light to the right of the controller s switches near the top of the unit The ultrasonic ice level control allows control of the point that the ice machine stops making ice Reasons for this include e Seasonal changes in ice used e Planning to sanitize the bin e Faster turnover for fresher ice Use of adjustable ice level control There are several positions the ice level can be set to including Off knob and label indicators lined up where it fills the bin until the standard bi
4. Condenser Intake Air Temp Degrees F 207i tT Cycle Time Water Temp minutes 50 70 80 Suction End of Freeze 28 30 26 28 27 29 27 30 34 36 End of Freeze 205 210 230 235 238 243 245 250 365 370 Ice per cycle 21 Ib Compressor Amps e Freeze 13 2 to 12 9 declining to 9 6 at the end of the freeze cycle 11 6 to 11 9 at five minutes e Harvest 12 7 to 11 8 January 2015 Page 57 C2648 Prodigy and Prodigy Plus Service Manual Repair Procedures 1 Inlet Water Solenoid Valve 2 Disconnect electrical power Electrical Shock Hazard Disconnect electrical power before beginning Shut off the water supply Remove front panel Unplug wire from coil Disconnect water supply tube from the inlet of the val Disconnect the water outlet tube Remove the two mounting screws holding the valve t Pull the valve forward and out of the machine 2 9 0 R o Ol Oe 0 Reverse to reassemble January 2015 Page 58 C2648 Prodigy and Prodigy Plus Service Manual Harvest Assist 1 Remove front panel 2 Push and release Manual Harvest button when unit shuts off go to next step 3 Disconnect electrical supply AWARNING Electrical Shock Hazard Disconnect electrical power before beginning 4 Unplug wires from solenoid or motor Do steps 5 and 6 if the harvest assist is a solenoid between plates 1 and 2 Both must be replaced if either has failed Remove screws holding both solenoid coils to
5. TQ HARVEST e e z Lid A 79 HOT GAS Only one water pump is ON when the purge valve light is ON January 2015 Page 49 C2648 Prodigy and Prodigy Plus Service Manual Pressure switch High pressure cut out The high pressure cut out switch will open at a preset pressure shutting off power to the compressor contactor After the pressure has fallen to another preset level the switch will re close and the contactor coil will be energized To Test High Pressure Switch A Attach refrigeration gauge set to high side port B Disconnect leads to fan motor C Measure voltage at high pressure control D Switch ice machine on observe pressure that the pressure control opens at compare to spec Allow system to equalize observe the pressure that the pressure control closes at compare to spec Transformer Check secondary voltage it must be between 10 and 15 5 AC volts Replace if no voltage is output or if above or below the acceptable voltage Controller The controller s software operation is confirmed if it is functioning Execute the test to confirm its operation of the loads Illumination of a diagnostic code other than E is not an indication of controller failure Each code requires its own diagnosis January 2015 Page 50 C2648 Prodigy and Prodigy Plus Service Manual Liquid Line Solenoid Test using the controller s indicator lights 1 Put the controller into test mode depress Off for 3 second
6. bin Additionally the machine must be connected to the correct remote condenser and use the correct pre charged tubing The machine is supplied with a full refrigerant charge field charging is not required This product cannot be stacked January 2015 Page 3 C2648 Prodigy and Prodigy Plus Service Manual Model Number Description Example e C2648SR 3D e C cuber e 24 nominal capacity in 100s of pounds e 48 nominal width of cabinet in inches e S cube size S small or half dice e M medium or full dice e R condenser type R Remote e 3 Electrical code 208 230 60 3 e De series revision code Note In some areas of this manual model numbers may include only the first five characters of the model number meaning that cube size condenser type and voltage differences are not critical to the information listed there Options There are several options available for field installation They include e Vari Smart Adjustable ice level system Smart Board Advanced feature control Some installations require bin or dispenser adapters See the table below Standard bin applications Adapter information Model BH1100 BH1300 or BH1600 C2648 Adapter panels included with bin no adapter needed Other bins and applications Take note of the depth of the machine Slope front bins may not be deep enough to allow the bin door to rest open against the machine Upright bins are recommended Note the drop zo
7. select the displayed interval January 2015 Page 39 C2648 Prodigy and Prodigy Plus Service Manual Diagnostics Likely Cause Probable Solution replace restart and check Shut down on maximum freeze Water leak Check purge valve curtain sump time pump hose Dirty condenser Clean condenser Restricted location intake air too Have condenser moved hot Ice thickness sensor dirty or disconnected Water distributor dirty Remove and clean water Mecsereer ty iene Inlet water valve leaks through Check inlet water valve during freeze Connected to hot water Check for bleed thru from missing check valve in building water supply High pressure cut out opened Check quick connects for complete piercing controller using test mode controller using test mode check controller using test mode January 2015 Page 40 C2648 Prodigy and Prodigy Plus Service Manual Diagnostics Shut Down on Maximum Freeze Compressor not operating Time continued continued Low refrigerant charge Add some refrigerant and restart unit If cycle time improves look for leak Hot gas valve leaks through during Check hot gas valve for hot outlet freeze during freeze Thermostatic expansion valve bulb Check bulb loose Thermostatic expansion valve Check evaporator superheat producing very low or very high change TXV if incorrect superheat Compressor inefficient Check compressor amp draw if low and all else is correct change compre
8. shutting off January 2015 Page 24 C2648 Prodigy and Prodigy Plus Service Manual Overall System Types Refrigeration Mechanical remote cooled Includes reciprocating hermetic compressor head pressure control valve headmaster receiver and liquid line solenoid valve Water System Inlet water solenoid valve fills reservoir once per cycle Purge solenoid valve opens to discharge some reservoir water once per cycle Control System Electronic Harvest cycle sensor Conductivity probe Water full empty sensor Conductivity probe Bin Control Curtain Switches Ice type Unified Harvest system Hot gas defrost with mechanical assist Electrical Components Compressor Liquid line valve Contactor Water Pumps 2 Pump relay NC shuts pump 2 off during draining Inlet Water Solenoid Valve Purge or Dump Valve Fan Motor on remote condenser High pressure cut out Harvest Assist Solenoids 3 Hot Gas Valves 3 High capacity relay operates all 3 harvest assist solenoids and hot gas valves Controller Transformer 12v AC for the controller only Water Level Sensor Ice Thickness Sensor Curtain Switches 3 January 2015 Page 25 C2648 Prodigy and Prodigy Plus Service Manual Controller Information Machine Indicator Lights Power Status Water Clean Code Display Main codes automatically displayed gta ineaeas Freeze Cycle F flashesFreeze Cycle is Pending m esa teach ectar tea Harvest Cycle H fl
9. upper bracket and remove upper bracket 6 Remove bottom two screws holding bracket and solenoid to cabinet see circled area Remove coil from unit Remove screws securing motor or solenoid to wall and remove it from the machine Install new motor harvest assist per its directions January 2015 Page 59 C2648 Prodigy and Prodigy Plus Service Manual Ice thickness sensor 1 gi e o 10 11 Push and release the Off switch Remove front and top panels Push and release the Harvest switch Remove the evaporator cover Disconnect electrical power AWARNING Electrical Shock Hazard Disconnect electrical power before beginning Open the control box Remove left most curtain Locate sensor squeeze mounting legs together to release it from the mounting bracket Remove sensor follow wire back to control box Disconnect from controller connection J10 Remove sensor from machine 12 13 Reverse to reassemble Set initial probe to evaporator surface gap using a 7 32 drill bit as a gauge Bridge thickness adjustments may be needed Operate machine and to confirm and adjust ice bridge January 2015 Page 60 C2648 Prodigy and Prodigy Plus Service Manual Contactor or Controller Contactor 1 Disconnect electrical power AWARNING Electrical Shock Hazard Disconnect electrical power before beginning NO a RF WN Remove front panel Open control box cover Remove right side o
10. will extend If the probe extends the solenoid is good If not do a voltage check Unplug the high voltage harness from the harvest assist solenoid Attach a voltmeter to the harness connector Push and release the Harvest button There should be full voltage at the connector If there is and the solenoid does not extend replace the solenoid If full voltage is not present check voltage at the controller If there is no voltage check voltage from the controller The hot gas harvest assist pin is 5 Note The coil of this valve is internally rectified will normally show infinite resistance when tested with an ohmmeter Harvest Assist Motor It operates much the same way as the solenoid only using a small gear motor pushing a rod You can test the motor for resistance with an ohmmeter t COMPRESSOR Hot Gas or Vapor Valve Test using the controller s indicator lights READY TO HARVEST Q z LJ a 2 op HOT ey SS 1 If the unit is running or has been off for more than 4 minutes push and release the Harvest button The Hot Gas indicator light will be on and the hot gas valves will be energized The compressor will force discharge gas into the evaporator inlet warming it If the evaporator inlet does not warm up do a voltage check 2 Shut the unit off by holding the Off button in for 3 This light will be ON when the Hot Gas Valve and seconds Harvest Assist have power 3 Unplug the high voltage har
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12. MPRESSOR TP12 O lt te 72 zZ ui Zz Q Ol FAN 7 AUX WATER PUMP PURGE WATER SOLENOID HOT ey NS je 2 gt PE Curtain Switch Indicator Lights READY TO HARVEST jo i lo to Light is ON when curtain is open Curtain amp Switch Manual Clean Harvest Code Display January 2015 Page 43 C2648 Prodigy and Prodigy Plus Service Manual Ice Thickness Sensor 1 Test using the controller s indicator light Observe the Ready To Harvest light Shut the machine off Use a wire to connect the metal part of the Ice Thickness sensor to the evaporator or simply remove the Ice Thickness Sensor and touch its metal surface to the metal control box wall The Ready for Harvest light should go ON Test with an Ohmmeter Disconnect electrical power Open the control box cover Unplug the ice thickness sensor lead from the controller Connect an ohmmeter lead to the ice thickness sensor lead touch the other ohmmeter lead to the ice machine chassis There must be an open circuit If there is continuity the sensor must be replaced If there is no continuity touch the ohmmeter lead to the metal part of the ice thickness sensor There should be continuity If open check the ice thickness sensor for scale build up Clean and recheck If still open replace the ice thickness sensor Test the controller s ice thickness sensor circuit by connecting a wire from J10 to ground Reconnect electric
13. Scotsman Ice Systems Service Manual for Modular Cuber Model C2648 induding Prodigy Plus C2648 Prodigy and Prodigy Plus Service Manual Introduction The design of this modular remote cuber is the result of years of experience with remote ice machine refrigeration systems Standard features of this product include front accessible on off switches always visible indicator lights mechanical assist ice harvest for extra efficiency automatically adjusting water purge and a control system that optimizes system operation The manual includes installation information technical details diagnostics and service parts Note the Caution and Warning symbols when they appear on the product or in this manual They indicate potential hazards Keep this manual for future reference Contents Control Button Use from standby Page 39 Installation Product Specifications Page 3 Diagnostics 0 0 0 eee Page 40 Model Number Description Page 4 DiagGnoOStles 2 06 karn ERALAN hess Hae Sake Page 41 Product Description Electrical Requirements Page 5 DIAGNOSUCS rs orastie sn eee eed dk Page 42 Condenser and Ice Machine Layouts Page 6 Test Procedures Sensors 04 Page 43 Wale erroei saetar ad debe by waa wala Page 7 Ice Thickness Sensor 000005 Page 44 Panel Removal 0000 eee eee Page 8 Water Level Sensor 0000 eae Page 45 Precharged Line Routing
14. achine use the information on the condenser s dataplate for fuse and wire sizes Condensers are UL listed for these model ice machines Central Condenser Rack Coils The ice machine may be connected to a central condenser coil The requirements are e Coil not previously used with mineral oil system Virgin coil preferred e Correct size internal volume and capacity BTUH Contact Scotsman for data e Includes a headmaster valve for discharge pressure control rated at 217 PSIG e Fan motor on all the time or controlled to be on whenever the ice machine is operating e ULL listed for the ice machine e Non Scotsman condensers must have prior Scotsman Engineering approval for warranty coverage to be in effect January 2015 Page 5 C2648 Prodigy and Prodigy Plus Service Manual Condenser and Ice Machine Layouts January 2015 Page 6 C2648 Prodigy and Prodigy Plus Service Manual Water The quality of the water supplied to the ice machine will have an impact on the time between cleanings and ultimately on the life of the product There are two ways water can contain impurities in suspension or in solution Suspended solids can be filtered out In solution or dissolved solids cannot be filtered they must be diluted or treated Water filters are recommended to remove suspended solids Some filters have treatment in them for suspended solids Check with a water treatment service for a recommendation Scotsm
15. addition this product is designed to automatically vary the amount of water purged based on the purity of the water supplied to it The water purge rate can also be set manually Adjustments of purge due to local water conditions are not covered by warranty January 2015 Page 7 C2648 Prodigy and Prodigy Plus Service Manual Panel Removal 1 Locate and loosen the two screws at the bottom Install the bin top adapter if one is required for the edge of the front panel application 2 Pull the front panel out at the bottom until it clears If the ice machine has not been unpacked do so the bin Lower the front panel down and off the machine Remove two screws from the front corners of the top panel 5 Lift up the front of the top panel push it back an inch then lift to remove now Remove the carton from the skid Cut away any shipping strapping Lift the ice machine off the skid directly onto the bin Note The machine is heavy Use a mechanical lift If lifting from the front be sure that fork tines are under the front and back of the cabinet If lifting from the side be sure to have tines under the 6 Locate and remove the screws holding each side front and back Do not lift on the sump bottom panel to the base Scotsman BH1100 BH1300 BH1600 Position back 7 Pull the side panel forward to release it from the of ice machine about 2 3 8 from back of bin back panel This manual covers several m
16. al power The Ready for Harvest light should go ON 2 t COMPRESSOR READY TQ HARVEST O Z Li a 72 HOT GAS Ready to Harvest Light Ice Thickness Sensor contact with water triggers Ready To Harvest light January 2015 Page 44 C2648 Prodigy and Prodigy Plus Service Manual Water Level Sensor 1 Test using the controller s indicator lights Sump empty and sump full Unit must be powered up and there must be water in the sump Add some manually if needed Locate water level sensor Release from sump cover and slowly lift up until the mid length probe is out of the water The sump empty light should come on and if the unit is on the inlet water solenoid valve will open to fill the reservoir Return the water level sensor to its normal position If the unit is on and calling for ice the water will fill until the top probe is in contact with it at that time the sump full light will switch ON Test with an ohmmeter Disconnect electrical power Open the control box cover Unplug the connector at J9 Locate water level sensor and remove it from the sump cover Test 1 Place one lead of the ohmmeter on the longest probe and the other on the controller end of the red wire there should be continuity Test 2 Place one lead on the controller end of the white wire and the other on the mid length probe there should be continuity Test 3 Place on lead on the controller end of the black wire and the other on the shortest p
17. an filters A triple head filter is recommended Either the Scotsman SSM3 taste and odor filter system or the ADS AP3 AquaPatrol system Water flow is 2 5 GPM when filling the reservoir RO water This machine can be supplied with Reverse Osmosis water but the water conductivity must be no less than 10 microSiemens cm Potential for Airborne Contamination Installing an ice machine near a source of yeast or similar material can result in the need for more frequent sanitation cleanings due to the tendency of these materials to contaminate the machine Most water filters remove chlorine from the water supply to the machine which contributes to this situation Testing has shown that using a filter that does not remove chlorine such as the Scotsman Aqua Patrol will greatly improve this situation while the ice making process itself will remove the chlorine from the ice resulting in no taste or odor impact Additionally devices intended to enhance ice machine sanitation such as the Scotsman Aqua Bullet can be placed in the machine to keep it cleaner between manual cleanings Water Purge Cube ice machines use more water than what ends up in the bin as ice While most water is used during ice making a portion is designed to be drained out every cycle to reduce the amount of hard water scale in the machine That s known as water purge and an effective purge can increase the time between needed water system cleaning In
18. ashes Manual Harvest Dine nd eases Bin is Full Oe een Clean Cycle Leg at oan tied Board Locked o eee td Test Mode D232 penisi Off Eee sae Self Test Failed 1 flashes Max Freeze Retrying Vethe er eae es Max Freeze Time Shut Down 2 flashes Max Harvest Retrying a eee Max Harvest Time Shut Down Ooms bans e Slow Water Fill rT Tee High Discharge Temp EE E Sump Temp Sensor Failure Tyi a pueg A Discharge Temp Sensor Failure 8 flashes Short Freeze Retrying Brigas nines Short Freeze Thin ice Setting Codes requires push button sequence Water Purge Settings A 1 2 3 4 5 De Scale notification see box to the right Power Status BEIGE De scale Sanitize On Off AutoAlert Indicator Lights Manual Clean Harvest Technician Section Description Freeze Cycle J Freeze Cycle is Pending Harvest Cycle H Manual Harvest Cora i Bin is Full Diipiay is Clean Cycle Control Operation See Manual Board Locked Water Light On Restore water supply to a Vodo mene E Self Test Failed De Scale Light On Clean and sanitize Max Freeze Retrying machine Max Freeze Time Shut Down Flush Setting To Change Depress Off Max Harvest Retrying for 3 seconds Press On to select purge Max Harvest Time Shut Down 1 5 setting or A for Automatic Slow Water Fill Test Mode Depress Off for 3 seconds sine then depress Clean for 3 seconds i Discharge Temp Sensor Failure Recall Diagnostic Cod
19. ater valve will be powered to refill the reservoir When it gets power the indicator light will be ON If the water valve does not open to fill the reservoir when its indicator light is on do a voltage check 3 Shut the unit down by holding the Off button in for 3 seconds Unplug the harness connection from the inlet water valve Wait four minutes Push and release the On button to restart the machine After the unit drains the reservoir the inlet water valve connection should receive full voltage If it does the inlet water valve should be replaced If there is no voltage check voltage from the controller The inlet water solenoid valve pin is 7 Test using an ohmmeter Disconnect electrical power Unplug coil from harness Measure coil resistance If open replace the inlet water solenoid Vv A Oz u Zz iJ S Z QO FAN 7 AU SO ENOID This light will be ON when the Purge Valve is ON January 2015 Page 52 C2648 Prodigy and Prodigy Plus Service Manual Harvest Assist Test using the controller s indicator lights Harvest Assist Solenoid No Longer Used on This Model Push and release the Harvest button The Hot Gas indicator light will be on At the same time the Harvest Assist Solenoid will be powered If the ice on the evaporator is thin the solenoid will extend If the ice is nearly full sized the solenoid will press against the ice until it releases from the evaporator then the solenoid probe
20. before the harvest cycle begins The ice harvests as a unit or slab which makes some noise when it impacts the bin These noises are all normal for this machine Caution Do not place anything on top of the ice machine including the ice scoop Debris and moisture from objects on top of the machine can work their way into the cabinet and cause serious damage Damage caused by foreign material is not covered by warranty January 2015 Page 20 C2648 Prodigy and Prodigy Plus Service Manual Cleaning Sanitation and Maintenance This ice system requires three types of maintenance e Remove the build up of mineral scale from the ice machine s water system and sensors e Sanitize the ice machine s water system and the ice storage bin e Clean the remote condenser It is the User s responsibility to keep the ice machine and ice storage bin in a sanitary condition Without human intervention sanitation will not be maintained Ice machines also require occasional cleaning of their water systems with a specifically designed chemical This chemical dissolves mineral build up that forms during the ice making process Sanitize the ice storage bin as frequently as local health codes require and every time the ice machine is cleaned and sanitized The ice machine s water system should be cleaned and sanitized a minimum of twice per year 1 Remove front panel Set aside 2 Push and release the Clean button Machine will 9 Remove evaporato
21. bing to be attached to them There is a single FPT drain fitting in the back of the cabinet Install new tubing when replacing a prior ice machine as the tubing will have been sized for the old model and might not be correct for this one Water Inlet Connection Potable Water Supply N ABER Mf Nex ae f Optional Water Filters Floor Drain ae Connect water supply to water inlet fittings Connect drain tubing to drain fitting Route the drain tubing to building drain Follow local codes for air gap 4 Use rigid drain tubes and route them separately do not Tee into the bin s drain Vent the reservoir drain A vertical vent at the back of the drain extended about 8 10 will allow the gravity drain to empty and also keep any surges during draining from discharging water Horizontal runs of drain tubing need a per fall per foot of run for proper draining Follow all applicable codes Reservoir Drain Venting Required Water Supply and Drain Connections January 2015 Page 13 C2648 Prodigy and Prodigy Plus Service Manual Electrical The machine is not supplied with a power cord one must either be field installed or the machine hard wired The dataplate on the back of the cabinet details the power requirements including voltage phase minimum circuit ampacity and maximum fuse size HACR type circuit breakers may be used in place of fuses Exte
22. covered and continues to fill until the top probe is in contact with water When the reservoir has filled the liquid line valve compressor and water pumps are switched on After the discharge pressure has increased past the set point of the headmaster in the condenser the headmaster will direct refrigerant gas into the condenser and warm air will be discharged out of the condenser The headmaster will modulate to maintain a minimum discharge pressure Water flows over the evaporators as the refrigeration system begins to remove heat When the water temperature falls to a preset point as measured by the water temperature sensor the controller shuts off the water pumps for 30 seconds The freeze cycle resumes when the pumps restart and ice begins to form on the evaporator As it forms the water flowing over the ice moves closer and closer to the metal tip of the ice thickness sensor When it comes into contact with the sensor for a few continuous seconds that signals the controller that the freeze cycle is complete Harvest Cycle When the harvest cycle begins the controller connects power to the High Capacity Relay which switches on the hot gas valves and through a parallel circuit the harvest assist solenoids After a few seconds the purge valve opens When the purge valve is opened a relay is energized to disconnect power to pump number 2 and water is drained from the reservoir by pump number 1 Based on either the automatic purge or manual
23. ctrical power been supplied to the machine Have all the water supply connections been made Have all the drain connections been made Has the remote condenser been properly installed Has the interconnecting tubing been properly routed between the remote condenser and the ice machine Have the quick connects been properly connected Has the power supply wire from the ice machine to the remote condenser been properly run and connected Has the unit been leveled Have all unpacking materials been removed Is the water pressure adequate Have the drain connections been checked for leaks Has the bin interior been wiped clean or sanitized Have any water filter cartridges been replaced Have all required kits and adapters been properly installed January 2015 Page 15 C2648 Prodigy and Prodigy Plus Service Manual Initial Start Up Remove front and left side panels Check machine 7 When the ice has frozen enough the Ready for for any packing or wires rubbing moving parts Note location of control board in lower left corner of the machine s front 1 Switch on the electrical power to the machine 2 Observe that some of the control s indicator lights glow and its display shows 2 3 Wait 4 hours for the compressor s crankcase heater to warm up the oil in the compressor Open the water supply valve 2 Turn the receiver s outlet valve to the full open position 3 Push and release the ON butt
24. d Prodigy Plus Service Manual Adjustments Bridge Thickness For A Service Tech Only 1 8 to 3 16 bridge 1 Push and hold Off till the machine stops Remove evaporator cover O 2 3 Remove left curtain 4 Use a box wrench and rotate the bridge thickness adjustment screw in 1 8 turn increments CW to increase bridge thickness Rotate CCW to decrease bridge thickness Caution Do not make the bridge too thin or the machine will not harvest properly Bridge thickness adjustments are not covered by warranty Too Big Just Right Just Right Too Small Small Cube Medium Cube Ice Bridge Thickness Measurement 5 Return curtain to its normal position 6 Push and release the On button Check next harvest of ice Repeat steps 1 6 if needed SAA E SrA Water purge seting Ice Thickness Sensor The water purge is factory set to the automatic position suitable for most water conditions The setting can be changed to one of 5 manual settings or left on automatic setting RO water or Factory High TDS Any with equivalent Setting for water conductivity not typical water less than 10 microSiemens cm 1 Switch the machine OFF by holding the Off button in until a number or the letter A shows on the display To set 2 Press and release the On button repeatedly until the number on the display corresponds to the desired setting 3 Press and release the Off switch again to return to the no
25. digy Plus Service Manual What to do before calling for service Reasons the machine might shut itself off To Manually Reset the machine e Lack of water 1 Open the switch door e Freeze cycle takes too long 2 Push and release the Off button e Harvest cycle takes too long 3 Push and release the On button e High discharge temperature To Shut the Machine Off e Controller self test failure 1 Open the switch door e Very high voltage 2 Push and hold the Off button for 3 seconds or until Check the following the machine stops 1 Has the water supply to the ice machine or building been shut off If yes the ice machine will Reset or Switch Off To O automatically restart within 25 minutes after water beter begins to flow to it Door Switches 2 Has power been shut off to the ice machine If yes the ice machine will automatically restart when power ee EE is restored Te I olg 3 Has someone shut the power off to the remote condenser while the ice machine still had power If yes the ice machine may need to be manually reset 4 Is a curtain open because some ice is stuck under it If so remove the ice and the machine should start in a few minutes Note Curtains can be removed amp replaced anytime the machine is in a standby mode or when it is in a freeze cycle Removal of all curtains during harvest terminates harvest at that point and if left off will result in the machine
26. e is working replace the dump valve relay 2 Test using an ohmmeter Disconnect electrical power Unplug the suspect water pump motor leads from the harness Measure the resistance of the motor windings If open replace the pump Measure resistance to ground If there is any replace the pump Vv A 0z u zZ Li Z QO O FAN 7 AU SOLENOID Only one water pump is ON when the purge valve light is ON Water Pump light is ON when one or both pumps are in operation January 2015 Page 47 C2648 Prodigy and Prodigy Plus Service Manual Purge valve Test using the controller s indicator lights 1 Shut unit off by holding the Off button for 3 seconds 2 Wait four minutes Push and release the On button observe the Purge Valve indicator light As the unit drains the reservoir the purge valve will be powered When it gets power the indicator light will be ON If the purge valve does not open to drain the reservoir when its indicator light is on do a voltage check Shut the unit down by holding the Off button in for 3 seconds Unplug the harness connection from the purge valve Wait four minutes Push and release the On button to restart the machine As the unit drains the reservoir the purge valve connection should receive full voltage If it does the purge valve should be replaced If there is no voltage check voltage from the controller The purge valve pin is 3 dump valve on wiring diagram Note The coil o
27. ect electrical power AWARNING Electrical Shock Hazard Disconnect electrical power before beginning Remove front panel Remove evaporator cover Open control box Locate curtain switch on evaporator mounting bracket Pull switch from its snaps Dismount wires from sump cover and remove from J7 or J8 connector on control board oN ea Fw Reverse to reassemble Be sure wires are re mounted to sump cover edge January 2015 Page 62 C2648 Prodigy and Prodigy Plus Service Manual Purge Valve or Water Level Sensor Purge valve 1 Push and hold the Off button to shut the machine off 2 Disconnect electrical power Electrical Shock Hazard U Disconnect electrical power before beginning 3 Remove front panel 4 Unplug wires from valve coil Note The coil can be removed from the valve body by rotating it 1 8 turn CW After removal of the coil the spring and plunger can be taken out 5 Loosen screws holding valve bracket to mounting bracket circled area in photo Remove inlet and outlet hoses Lift the valve and bracket up and off the keyhole slots Remove valve from cabinet 8 Remove valve from bracket 9 Reverse to reassemble 10 Push and release the On button to restart the machine Water level sensor 1 Push and hold the Off button until the machine shuts off 2 Remove the front panel Locate water level sensor 4 Squeeze the locking tabs together and pull the sensor up and out
28. el Then tighten the coupling nut an additional one a remove any possible foreign matter 2 Lubricate the inside of the couplings especially the threads and O rings with refrigerant oil 3 Position the fittings on the correct connections on the condenser and ice machine e Connect the 5 8 discharge line to the remote condenser fitting e Connect the 1 2 liquid line to the remote condenser fitting e Connect the discharge line to the ice maker fitting e Connect the 1 2 liquid line to the ice maker fitting Final Connections 4 Tighten the couplings together by hand until it is certain that the threads are properly engaged quarter turn The line will show the amount that the nut turns Do NOT over tighten 5 Hold the tubing from rotating with one wrench and tighten each coupling swivel nut with another until is felt have been made and after the king liquid outlet valve has been opened do not open at this time January 2015 Page 12 C2648 Prodigy and Prodigy Plus Service Manual Plumbing Requirements All models require connection to cold potable water A hand actuated valve within site of the machine is required There is a single 3 8 flare nut inlet water connection and a 3 8 to 3 8 flare union is supplied with the machine and can be used if desired Water Filters Install a new cartridge if the filters were used with a prior machine Drains All models require drain tu
29. ent compressor is the correct one for the unit Disconnect electrical power Electrical Shock Hazard Disconnect electrical power before beginning 15 16 IT 18 19 20 2l 22 23 24 Recover refrigerant Remove compressor terminal cover and disconnect electrical leads Remove all the mounting bolts Open both discharge and suction access valves Connect nitrogen to discharge access valve Open nitrogen valve Unsweat the suction discharge and process tubes Unsweat the drier from the liquid line Remove it Shut the nitrogen valve Remove the compressor from the ice machine Note Some models may require the control box to be moved slightly to allow compressor replacement Immediately place new compressor in ice machine Open nitrogen bottle and braze compressor suction discharge and process joints together Braze new drier into system Shut off nitrogen shut access valves Evacuate to at least 300 microns Weigh in the nameplate charge Check for leaks Reconnect electrical leads Attach compressor terminal cover Reconnect electrical power Return sound shield and front panel to their original positions Note If the compressor is being returned for warranty braze the stubs shut and tag the compressor with the required information January 2015 Page 66 C2648 Prodigy and Prodigy Plus Service Manual Thermostatic Expansion Valve 13 14 15 16 17 Remove front panel I
30. es Depress Off Short Freeze Retrying for 3 seconds Press Harvest repeatedly Short Freeze Thin ice to go from most recent to oldest of 10 All 4 Upper Lights Flashing Unit Remotely Reset from Code 1 2 4 or 8 Depress Locked Out Contact Leasing Company Off then Depress On 02 4189 01 Rev D Change De Scale Notification Interval This feature is accessible only from standby Status Light Off 1 Press and hold harvest button for 3 seconds This starts the Time to Clean Adjustment Mode and displays the current time to clean setting 2 Press the clean button repeatedly to cycle through the 4 settings 1 year 0 or disabled 4 months 6 months default 3 Push Off to confirm the selection January 2015 Page 26 C2648 Prodigy and Prodigy Plus Service Manual Controller Information Component Indicator Lights Condenser Fan Aux Aux liquid line solenoid Water Pump Purge Valve Water Solenoid Hot Gas Compressor Ready to Harvest Sump Empty Sump Full Curtain SW1 Manual Clean Curtain SW2 Harvest ee Code Curtain SW3 in Display Code Display t COMPRESSOR TP21 CURTAIN SWIT Y A CONDENSOR FANI AU SOLENOID READY TO HARVEST og a6 O January 2015 Page 27 C2648 Prodigy and Prodigy Plus Service Manual How It Works Freeze Cycle At start up the controller drains and refills the reservoir The reservoir refills when the mid length water level sensor probe is un
31. f control box Remove metal barrier from control box Remove mounting screws holding contactor to control box Exchange wires from old controller to new Refer to wiring diagram as needed Reverse to reassemble Controller 1 Disconnect electrical power 2 Remove front panel 3 Open control box door 4 Unplug all wires from controller 5 Remove screws holding controller to door 6 Push controller snaps down and pull controller frommounting bracket 7 Before touching new controller discharge any static electricity by touching the metal surface of the ice machine cabinet 8 Rotate selector switch to the proper model number for the machine the controller is being installed on 9 Install new controller on mounting bracket secure with original screws Note Be SURE the controller is snapped into place and all screws returned to their original spots 10 Attach all wires removed 11 Shut control box cover 12 Switch on the electrical power January 2015 Page 61 C2648 Prodigy and Prodigy Plus Service Manual Curtain or Curtain Switch Curtain Push and hold the Off button to shut the machine off Remove front panel Remove evaporator cover Push inside tab in to release front curtain pin from holder Pull curtain from machine Reverse to reassemble N Oa fF WN gt Push and release the ON button to restart the machine Curtain switch 1 Push and hold the Off button to shut the machine off 2 Disconn
32. f the machine was in operation push and release the Harvest button to shut it down Wait until the harvest cycle has ended so the evaporator has no ice on it Disconnect electrical power Recover refrigerant Remove insulation covering expansion valve and bulb Remove strap securing bulb to suction line Open both discharge and suction access valves Unsweat the expansion valve from the liquid line Remove it Unsweat the drier from the liquid line Remove it Connect nitrogen to discharge access valve Immediately place new valve in ice machine Open nitrogen bottle and braze expansion valve inlet and outlet joints together Braze new drier into system Shut off nitrogen shut access valves Evacuate to at least 300 microns Weigh in the nameplate charge Check for leaks Attach bulb to suction line Position at 4 or 8 o clock on the tube Secure tightly but do not crush the bulb with the strap Attach valve and bulb insulation 18 19 Reconnect electrical power Return front panel to its original position January 2015 Page 67
33. f this valve is internally rectified and will normally show infinite resistance when tested with an ohmmeter Vv LA 0z u LJ Z 2 S FAN 7 AU SO ENOID This light will be ON when the Purge Valve is ON January 2015 Page 48 C2648 Prodigy and Prodigy Plus Service Manual Compressor contactor Test using the controller s indicator lights ls When the unit is in ice making mode the compressor contactor will have power Check the Compressor indicator light when it is on the compressor contactor will have pulled in If it is not do a voltage check Place voltmeter leads on the coil of the contactor There should be full voltage If there is full voltage present and the contactor has not pulled in replace the contactor If there is no voltage check if the high pressure cut out is open If the high pressure cut out is closed check for voltage from the controller The contactor pin is 4 Check when the compressor indicator light is on There should be voltage If not replace the controller If there is voltage at the controller but not at the contactor coil the harness wires or connectors are damaged and must be replaced Test using an ohmmeter Test the coil of the contactor for continuity or shorts to ground Replace if open or shorted Check connections and contacts Be sure connections are tight and that the contacts are not burnt Replace any contactor with burnt contacts t COMPRESSOR READY
34. he ice machine of the building using the methods and practices of construction that conform to the local building codes including having a roofing contractor secure the condenser to the roof Note The location of the condenser is relative to the ice machine is LIMITED by the specification on the prior page Meet all applicable building codes Remote Condenser Interconnecting Tubing Ice Machine Power Supply Remote Condenser Typical System Illustration January 2015 Page 10 C2648 Prod igy and Prodigy Plus Service Manual Precharged Line Routing Do not connect the precharged tubing until all routing Caution Do NOT kink the refrigerant tubing while and forming of the tubing is complete See the routing it Coupling Instructions for final connections 3 Route the refrigerant tubes thru the roof opening Important CONFIRM that the correct line set 4 Follow straight line routing whenever possible RTEL prefix has been provided Excess tubing may EITHER be coiled up INSIDE 1 Each set of pre charged tubing lines contains the building OR cut out prior to connection to the a 1 2 diameter liquid line and a 5 8 diameter ice maker and condenser __dischargeline sf the excess tubing is cut out after re brazing the Note The openings in the building ceiling or wall tubing must be evacuated prior to connection to the listed in the next step are the minimum sizes ice make
35. hickness sensor Remove water distributor bracket from the top of the evaporator Connect nitrogen bottle to discharge access port Open both access valves Open nitrogen valve Unsweat the inlet and outlet refrigerant tubes Use caution when heating the tubing do not damage the freezing compartment walls Shut nitrogen valve Gain access to the right side of the unit Remove mounting screws holding the evaporator to the freezing compartment wall Note fastener size is 5 16 hex Remove the evaporator from the ice machine Attach new evaporator to freezing compartment wall Install the harvest assist solenoid Open nitrogen valve Reconnect inlet and outlet tubes by brazing the copper tubes together Replace filter drier Shut access valves remove nitrogen bottle Evacuate to at least 300 microns Weigh in the nameplate charge Check for leaks Return ice thickness sensor bracket ice thickness sensor water distributor curtain and evaporator cover to their original positions Reconnect electrical power Return front panel to the original position January 2015 Page 65 C2648 Prodigy and Prodigy Plus Service Manual Compressor 1 2 Remove front panel If the machine was in operation push and release the Harvest button to shut it down Wait until the harvest cycle has ended so the evaporator has no ice on it Open the replacement compressor box Check the compressor nameplate be SURE that the replacem
36. hly wash all interior surfaces of the ice storage bin Pour excess sanitizer solution into the bin s drain Water filters If the machine has been connected to water filters check the cartridges for the date they were replaced or for the pressure on the gauge Change cartridges if they ve been installed more than 6 months or if the pressure drops too much when the ice machine fills with water Squeeze Tabs Together Slide Out Until it Stops Then Lift To Remove lt lt JA Inspect Orifice Holes Inspect Water Distributor January 2015 Page 22 C2648 Prodigy and Prodigy Plus Service Manual Remote condenser and other maintenance The condenser fins will need to be cleaned Push and release the Off button Wait until the machine stops Note Lock out the controller or the ice machine power supply to prevent an unauthorized fan motor restart If there is imbedded grease use a commercial coil cleaner to wash out the grease Dust can be blown out with compressed air from the inside or use a vacuum cleaner and soft brush Be careful not to damage the condenser s fins Use a fin comb to straighten any bent fins Exterior Panels The front and side panels are durable stain
37. ill remain on until it fills the reservoir The Ready to Harvest light will switch Off when the ice falls from the evaporator Harvest continues until the ice slab is ejected from the evaporator and falls opening the curtain When the curtain opens the magnetic reed curtain switch opens breaking the circuit to the controller If all the curtains re close within 30 seconds the controller switches the machine back into another freeze cycle If any curtain switch remains open the controller shuts the machine down and puts it into a standby position January 2015 Page 29 C2648 Prodigy and Prodigy Plus Service Manual Electrical Component Details Compressor e Operated by the compressor contactor Contactor e Operated by the controller and the high pressure cut out switch Line voltage coil When energized the Compressor indicator light will be ON Water Pumps e Operated by the controller one of them thru a NC relay When the Pump light is ON during a Freeze cycle both pumps should be operating When the Pump and Purge lights are both ON one pump will be ON and one will be OFF Inlet Water Solenoid Valve e Operated by the controller Line voltage coil When energized the Water Solenoid indicator light will be ON Purge Valve e Operated by the controller Line voltage coil When energized the Purge Valve indicator light will be ON Energized for a time during harvest Fan Motor e Remote condenser fan motor is on whenever
38. inks red when a machine malfunction has been detected Water Light Blinks red when reservoir does not fill with allowed time period De scale sanitize Yellow when the controller has determined it is time to de scale and sanitize the machine Use clean process to reset light Time is determined by power up time and controller s setting Standard setting is 6 months Controller Connections e J1 Ground and Power Supply e J2 High voltage power harness to loads e J3 Factory use e J4 Optional board connector e J5 Communications port e J6 Thermistor connection e J7 Curtain switch e J8 Curtain switch e J9 Water level sensor e J10 Ice thickness sensor e J11 Bin thermostat Used for Curtain Switch 3 This model cannot use with a bin thermostat January 2015 Page 36 C2648 Prodigy and Prodigy Plus Service Manual Control Safeties Max freeze time 45 minutes When exceeded the controller will attempt another freeze cycle If the next cycle s freeze time is less than maximum the control will continue normal ice making If the next freeze cycle was too long the control will again attempt another freeze cycle If the freeze cycle is too long three consecutive cycles the controller will shut the unit off and it must be manually reset Min freeze time 6 minutes If the controller switches the machine into harvest within 20 seconds of the minimum freeze time the controller wi
39. l feet e Physical line set maximum length is 100 feet e Calculated line set length maximum is 150 Calculation Formula e Drop dd x 6 6 dd distance in feet e Rise rd x 1 7 rd distance in feet e Horizontal Run hd x 1 hd distance in feet e Calculation Drop s Rise s Horizontal Run dd rd hd Calculated Line Length Configurations that do NOT meet these requirements must receive prior written authorization from Scotsman Do NOT e Route a line set that rises then falls then rises e Route a line set that falls then rises then falls Calculation Example 1 The condenser is to be located 5 feet below the ice machine and then 20 feet away horizontally 5 feet x 6 6 33 33 20 53 This location would be acceptable Calculation Example 2 The condenser is to be located 35 feet above and then 100 feet away horizontally 35 x 1 7 59 5 59 5 100 159 5 159 5 is greater than the 150 maximum and is NOT acceptable Condenser Distance amp Location Schematic dd Remote Condenser Located Max 35 ABOVE Ice Machine hd rd Max 15 SS Remote Condenser Located BELOW Ice Machine January 2015 Page 9 C2648 Prodigy and Prodigy Plus Service Manual For The Installer Remote Condenser Roof Attachment Locate the condenser as near as possible to the Install and attach the remote condenser to the roof interior location of t
40. less steel Fingerprints dust and grease will require cleaning with a good quality stainless steel cleaner Water Level Sensor The water sensor probes and probe housing must be cleaned regularly Locate water level sensor Squeeze catches together and pull up to remove sensor Unplug from harness Separate probes from housing and wash all surfaces with ice machine scale remover solution Note Be sure white holder is clean e 3 Thermostatic Expansion Valves e 3 Harvest Assist Solenoids e 3 Hot Gas Valves e 1 OPR valve Release probes by pushing in on white buttons and pulling probe down out of holder Ice making or the freeze cycle is controlled by an ice thickness sensor on the far left evaporator When the ice is the correct size the controller switches the machine to a harvest cycle All three hot gas valves open at the same time Harvest continues until all 3 curtains have opened After all 3 curtains have opened and re closed the freeze cycle restarts If one or more of the curtains stay open for 30 seconds or longer the controller switches the machine off closes the liquid line solenoid valve then shuts the compressor off and signals bin full It will restart ice making when all three curtains are closed The OPR valve is set to limit dome pressure during harvest to 80 PSIG The optional KVS Vari Smart sensor location is in the base behind the compressor January 2015 Page 23 C2648 Prodigy and Pro
41. ll harvest for a preset time and does not stop if the curtain switch opens If this occurs again in the next three cycles the machine will shut down and must be manually reset Max harvest time 3 5 minutes If the harvest cycle has continued for 3 5 minutes without the curtain opening the controller will shut the machine off for 50 minutes and then restart If there is another the machine will shut the machine off for another 50 minutes and then restart If it fails a third consecutive time the controller will shut the machine down and must be manually reset e Time between resets 50 minutes e Number of automatic resets 2 e Max water fill time 8 minutes Machine will attempt a restart every 20 minutes e Max discharge temp 250 degrees F e Time interval between cleanings 6 months power on time adjustable see page 18 e Manual harvest time 3 minutes e Pump down interval 12 hours Pump down is 30 seconds of compressor only on time e Minimum compressor off time 4 minutes e Continuous Run Time Maximum Cycles 100 January 2015 Page 37 C2648 Prodigy and Prodigy Plus Service Manual Restarts Power Interruption The controller will automatically restart the ice machine after adequate voltage has been restored e H blinks on code display e Status indicator light blinks e Reservoir is drained and refilled Default harvest is initiated The curtain switch does not have to open to terminate harvest harve
42. n control shuts the machine off See the kit s instructions for complete details Adjust Ice Level Rotate the adjustment post to the desired ice level The machine will fill up to that level and when it shuts off the Bin Full indicator light next to the adjustment knob will be On Note Ice will build up in the bin at an angle the distances controlled will be from the sensor to the top of the ice directly beneath it January 2015 Page 19 C2648 Prodigy and Prodigy Plus Service Manual Options and Other Information Smart Board When this option is present there is an additional display panel in the area below the main control board It is not visible when the front panel is on The Smart Board s features include e Seven day programmable ice level setting when used with the optional Vari Smart ice level control e Recording of machine operation including cycle time e Calculation of average cycle time e Recall of malfunctions with the time they occurred Ice The cuber drops ice in large sections That ice will break up into random parts as it falls into the bin but some large sections may remain on top of the ice in the bin Heat Most heat is exhausted at the remote condenser The ice machine head should not generate significant heat Noise The ice machine will make noise when it is in ice making mode The compressor and water pumps all produce some sound It is also normal to hear some cracking just
43. n steady for a few seconds Harvest will begin The display shows an The hot gas valves open and the harvest assist mechanisms are activated The purge valve opens to drain some water when it does the inlet water valve opens to refill the reservoir After a few seconds the purge valve closes but the inlet water valve continues to fill the reservoir Harvest continues until the ice is released as a unit from each evaporator and forces each curtain to open 8 When all curtains have opened and re closed the controller returns the unit to a freeze cycle 9 Check the ice harvested for proper bridge thickness The ice bridge is factory set at 3 16 inch If needed adjust bridge thickness Do NOT make it too thin 10 Determine the water purge setting from the table on the next page If desired change the setting to accommodate the local water conditions 11 Return the panels to their normal positions and secure them to the machine 12 Instruct the user in the operation of the machine and its maintenance requirements 13 Fill out and mail the warranty registration form or go on line at Scotsman s website www scotsman ice com and register it there Typical Ice Making Cycle Times minutes 70 F cond air 90 F cond air 50 F water 70 F water C2648R 11 13 13 15 Listed times are for clean machines Cycle times at startup will be longer until the system stabilizes January 2015 Page 16 C2648 Prodigy an
44. ne and optional ultrasonic sensor locations in the illustrations Drop zone hole must be 20 25 deep Scotsman ice systems are designed and manufactured with the highest regard for safety and performance They meet or exceed the standards of UL and NSF Scotsman assumes no liability of responsibility of any kind for products manufactured by Scotsman that have been altered in any way including the use of any part and or other components not specifically approved by Scotsman Scotsman reserves the right to make design changes and or improvements at any time Specifications and design are subject to change without notice January 2015 Page 4 C2648 Prodigy and Prodigy Plus Service Manual Product Description Electrical Requirements Ice Machine Electrical Use Minimum Maximum Suggested Dimensions condenser Circuit Fuse Size Fuse Size w x d x h Ampacity 48 x 28x31 C2648SR 3 208 230 60 3 PRC241 32A C2848MR 3 208 230 60 3 PRC241 32A Remote Condenser Footprint On center mounting hole spread 27 57 w x 33 38 d See page 5 Minimum bin top opening 20 5 x 40 5 includes drop zones and ultrasonic sensor location See page 5 Or HACR circuit breakers Table notes Series revision code omitted All the listed condensers include a headmaster valve Ratings include the remote condenser motor as it is designed to be powered by the ice machine If connecting remote condenser independently of the ice m
45. ness from the hot gas solenoid connected to the motor 4 Attach a voltmeter to the harness connector Wait 4 minutes Push and release the Harvest button There should be full voltage at the connector If there is and the solenoid does not open replace the solenoid coil If full voltage is not present check voltage at the controller If there is no voltage check voltage from the controller to ground The hot gas pin is 5 Test with an ohmmeter Disconnect electrical power Unplug high voltage harness from hot gas or vapor valve Measure resistance of hot gas or vapor valve coil If open replace the coil January 2015 Page 53 C2648 Prodigy and Prodigy Plus Service Manual Reservoir Removal The reservoir may be removed from the cabinet if needed 1 Drain water by holding in the Clean button repeatedly until no more water will drain 2 Disconnect electrical power 3 Twist counterclockwise and lift water pumps up and tip to one side 4 Remove front water reservoir cover plate set aside 5 Remove sump cover and water level sensor set sump cover aside 6 Pull water reservoir forward tip up and out of the machine January 2015 Page 54 C2648 Prodigy and Prodigy Plus Service Manual Controller Differences The controllers are programmed at the factory for the model they are installed on they cannot be moved from one model to another due to differences in Water purge time per setting Ma
46. nsion cords are not permitted Use of a licensed electrician is recommended The ice maker is designed to operate on its own electrical circuit and must be individually fused Voltage variation must not exceed the limits listed earlier The remote condenser is designed to be powered from the ice machine A separate knockout hole has been provided near the ice maker electrical junction Remote Condenser Electrical Connection Electrical connections are made inside the junction box in the back panel of the ice machine 1 Remove the junction box cover and route the power cord through the access hole and properly attach the power supply wires to the leads in the junction box 2 Attach the remote condenser fan motor wires to the wires in the junction box tagged fan motor leads 3 Install field supplied strain reliefs per code Attach a ground wire to the ground connection in the junction box Check voltage when complete 5 Return the junction box cover to its original position and secure with the original screws Follow all applicable local state and national codes Electrical Connections January 2015 Page 14 C2648 Prodigy and Prodigy Plus Service Manual Final Check List 1 10 11 12 13 14 15 16 Is the unit located indoors in a controlled environment Is the unit located where it can receive adequate cooling air Has the correct ele
47. ntroller to ground to controller when water contacts a probe suspended over ice plate Signals ready for harvest Curtain Switches e Magnetic reed switch Normally open switch is closed when magnet is nearby This model has three curtain switches Curtains may be removed in the freeze cycle without affecting controller operation A curtain removed during harvest will cause the controller to terminate harvest and shut the unit off All curtains must open to terminate harvest and if any one remains open for 30 seconds that signals the controller to shut the unit off on bin full Water temperature sensor e Thermistor inserted into the water pump discharge hose Discharge temperature sensor e Thermistor attached to the discharge line near the compressor Reported temperature used by the controller to determine end of cycle fan off delay time If discharge temperature exceeds a preset maximum controller will shut the machine off Note Controller will operate machine in a default mode with thermistors disconnected from the controller Diagnostic code 5 or 7 will be displayed during that time January 2015 Page 31 C2648 Prodigy and Prodigy Plus Service Manual Component Indicator Light Table Sump Full Curtainopen S O Curtain Switch Curtain open Y A t TP21 CURTAIN SWIT uc YW VY Li Oo am 2 1S CONDENSOR FANI AU SOLENOID HOT GAS January 2015 Page 32 C2648 Prodigy and Prodigy Plu
48. ock control e Hold On button in for 3 seconds keep holding then press and release Off twice Empty reservoir e Hold Clean button in for 3 seconds Release Pump and purge valve are ON for 30 seconds Repeat as needed Test Mode e Depress Off for 3 seconds release Then depress Clean for 3 seconds The sump will fill the first 30 seconds of the test If the sump is full it will overflow into the bin At 30 seconds the WIV will shut off and the WP will turn on You will be able to see and hear the water running over the plates After 10 seconds the PV and HGV will turn on Water will be purging from the machine After 10 more seconds the compressor will start 5 seconds later the HGV will close The compressor will run for a total of 20 seconds After which everything will turn off for 5 seconds After that time the HGV will open and you ll be able to hear the hissing as the pressure is equalized After 10 seconds all will be off and the output test will be complete Change De Scale Notification Interval Like the others this feature is accessible only from standby Status Light Off 1 Press and hold harvest button for 3 seconds Starts the Time to Clean Adjustment State and displays the current time to clean setting 2 Press the clean button repeatedly to cycle through the 4 possible settings e 1 year 8760 hours O disabled 4 months 2920 hrs 6 months 4380 hours default 3 Press Off or leave untouched for 60 seconds to
49. odels The model Secure the ice machine to the bin with the hardware provided two metal Z straps and four bolts number on the ice machine can be found either on the dataplate which is on the back panel or the serial number tag which is behind the front panel See the illustration for the locations of the dataplate and the serial number tag The remote condenser has a separate model and serial number Its model and serial number is on the dataplate on the condenser near the quick connect fittings Write the model and serial number of the ice machine here Write the model and serial number of the remote condenser here Write the model and serial number of the ice storage bin here Write the day of initial start up here That day starts the warranty period Uncrate and Set Up Begin with the ice storage bin Uncrate and attach legs Check the bin top gasket for tears or gaps If recycling an older bin replace the gasket or repair with food grade sealant prior to placing the ice machine on the bin January 2015 Page 8 C2648 Prodigy and Prodigy Plus Service Manual Remote Condenser Location Use the following for planning the placement of the condenser relative to the ice machine Location Limits condenser location must not exceed ANY of the following limits e Maximum rise from the ice machine to the condenser is 35 physical feet e Maximum drop from the ice machine to the condenser is 15 physica
50. of the sump Unplug the electrical connection from the sensor Reverse to reassemble January 2015 Page 63 C2648 Prodigy and Prodigy Plus Service Manual Water pumps There are two water pumps The front pump forces water to the two left evaporators and the back pump waters the right evaporator and drains the reservoir 1 Push and hold the Off button until the machine shuts off 2 Remove the front panel Electrical Shock Hazard Disconnect electrical power before beginning Unplug the water pump Rotate the pump CCW about 1 8 turn to release it Lift pump up and remove hose Attach hose to new pump Install in pump bracket ONO aT Fw Rotate CW about 1 8 turn to lock it in place 9 Plug pump into harness 10 Return panels to their original positions and secure with the original screws 11 Push and release the ON button to restart the machine January 2015 Page 64 C2648 Prodigy and Prodigy Plus Service Manual Evaporator 1 a N Remove front panel Remove evaporator cover Remove top and right side panels If the machine was in operation push and release the Harvest button to warm up the evaporator Disconnect electrical power AWARNING Electrical Shock Hazard Disconnect electrical power before beginning 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Remove harvest assist Recover refrigerant Remove curtain Remove water distributor Release ice t
51. on of the lower left corner switch panel The indicator light will begin to blink The purge valve will open and the water pumps will start The inlet water valve will open to add water to the reservoir After a few seconds the purge valve will close and the water pumps will stop Water will flow into the machine until the reservoir is full The hot gas valves and harvest assist devices will activate and the liquid line solenoid valve will open then the compressor remote fan motor and water pumps will start The display will show a continuous F Five seconds later the hot gas valves will close and the harvest assist devices will return to their standby positions Warm air will be discharged from the condenser coil 4 During the Freeze cycle move each curtain to confirm the controller is getting the signal from the curtain switch Two of them will cause the SW1 or SW2 light on the control board to blink ON when the curtain moves away from the evaporator and OFF One of the curtains will cause the period in the display code to blink ON when the curtain is moved away and OFF when returned to its normal position 5 Note Moving the curtain during the Freeze cycle has no affect on unit operation 6 Observe the Ready for Harvest indicator light It may blink early in the freeze cycle that is normal The control will ignore that signal for the first 6 minutes of freeze Harvest indicator light will be on steady After it s been o
52. or leak Incorrect superheat Check evaporator superheat if low replace TXV Long Harvest Cycle between curtain and sump Curtain does not close correctly Check curtain for proper swing January 2015 Page 42 C2648 Prodigy and Prodigy Plus Service Manual Test Procedures Sensors All electrical components in this ice machine can be diagnosed with a volt ohmmeter Curtain Switch 1 Test using the controller s indicator lights Observe SW1 and SW2 and the Period in the display code Open and close the curtain in question When the curtain is opened the SW light will be ON When the curtain gets to within a half inch of closing at the switch the SW light will go OUT 2 Test with an ohmmeter Disconnect electrical power Open the control box cover Unplug the curtain switch lead from the controller Connect an ohmmeter to the leads of the switch Open and close the curtain When the curtain is closed the switch is closed and there will be continuity a good curtain switch will have very low resistance when the curtain is closed 5 to 2 ohms A defective switch has about 100 or more ohms of resistance when the curtain is closed When the curtain is open the switch is open and the circuit will be open 3 Test the controller s curtain switch circuit by jumping the connectors on J1 or J2 together Reconnect electrical power When jumped the matching SW light will go out When unplugged or open the SW light will be ON t CO
53. outdoors within the temperature limits listed below The interconnecting tubing must be installed per the directions stated in this manual and the amount of tubing exposed to uncontrolled temperatures must be minimized Space Limitations Although the machine will function with no clearance to the top and sides some space must be allowed for service access Building the machine in with no access will cause higher service cost in many cases this extra cost may not be covered by warranty Environmental Limitations ice machine P Minimum Air temperature 100 F F F Water temperature 40 100 Remote condenser P Minimum Maximum _ __ Air temperature 20 F 120 F Power Supply Minimum Maximum 208 230 volt 198 volts 253 volts model Warranty Information The warranty statement for this product is provided separately from this manual Refer to it for applicable coverage In general warranty covers defects in material and workmanship It does not cover maintenance corrections to installations or situations when the ice machine is operated in circumstances that exceed the limitations printed above Product Information The machine is a specialized version of a modular cuber A modular cuber does not include any ice storage it is designed to be placed onto an ice storage bin Many installations only require the matching bin but some may need an adapter to be placed between the ice machine and the
54. previously switched Off Control board does a self check If the self check fails the unit displays an E and no further action will occur If the self check passes the controller will display a 0 the curtain lights will be ON and the Power and Sump Empty lights will be ON Pushing and releasing the On button will start the ice making process The display will begin to blink F The component indicator lights will switch on and off to match the following process The purge valve opens and one water pump starts to empty the reservoir This is done to discharge any excess water from ice melting into the reservoir The hot gas valves and the harvest assists are energized by the High Capacity Relay The inlet water valve will open to fill the reservoir The water valve can open any time the water level is low After a few seconds the purge valve closes and the pump shuts off When the reservoir is full the inlet water valve stops the liquid line valve is opened and the compressor switches on Five seconds after the compressor starts the hot gas valve and the harvest assist solenoid are de energized Both water pumps switch on Light Information The display shows a non blinking F The Power and Status Lights will be Green The compressor fan motor water pump sump full lights will be ON and all curtain switch lights will be OFF The Freeze cycle continues When the reservoir water temperature falls to a certain preset point the water pump
55. purge setting the pump and purge valve will be switched off at a time determined to have drained enough water for that setting The inlet water valve will open to fill the reservoir anytime the mid length probe is uncovered which occurs during the reservoir drain cycle Harvest continues as the hot discharge gas flows into the evaporator s serpentines heating up the evaporators At the same time the harvest assists are pushing against the back of each ice slab When the ice releases from an evaporator it harvests as a unit and the harvest assist probe provides some additional force to push it off When the ice falls off it will force that curtain open An open curtain during the harvest cycle signals the controller that that evaporator has released its ice The controller will continue harvest until all three curtains have opened If a curtain remains open the controller will shut the machine down Anytime harvest is complete the hot gas valve and harvest assists are shut off The harvest assist solenoid pin returns to its normal position by spring pressure If the curtains re close after harvest the freeze cycle will restart Shut down occurs when a curtain remains open after a harvest cycle The controller will switch off the liquid line solenoid valve and operate the compressor for 30 seconds then shut it off January 2015 Page 28 C2648 Prodigy and Prodigy Plus Service Manual Electrical Sequence Remote Cooled Power connected unit
56. r charge for each ice making cycle Water valve Solenoid type Opens to fill reservoir when mid sensor probe no longer makes a circuit to the bottom probe Closes when reservoir is full and top probe makes circuit to mid probe Pumps Unsealed pedestal type twist release mounting Water purge valve Solenoid type Opens to purge water during harvest cycle Water Level Sensor Three probe conductivity Distributors ABS plastic Evenly distributes water over the evaporator surface Slides off the evaporator top Removable cover for ease of cleaning Water Distributor Removal January 2015 Page 35 C2648 Prodigy and Prodigy Plus Service Manual Control Operation Standard control Electronic controller operating from a 12 AC volt power supply Will operate within a voltage range between 10 and 15 5 User s Indicator lights four front visible Power Status Water De scale Sanitize Accessible On switch Accessible Off switch Code Display Displays letters and numbers to indicate cycles and diagnostic codes Manual Harvest switch Use to trigger harvest at any time Clean switch Use to initiate and finish the de scale or sanitizing cycles Component Operation Indicator Lights Indicate the status of certain components water level ready for harvest curtain switch position Power Light On when power is being supplied to the controller Status Light Green when machine is in ice making mode and is operating correctly Bl
57. r covers set aside go thru a manual harvest and then begin draining 49 Remove right side panel and liner set aside the reservoir 11 Remove all three curtains Set aside Note All curtains must be in their closed positions Move curtains to release an ice trapped after ice is harvested 12 Twist counterclockwise and lift water pumps up and tip to one side 13 Remove front water reservoir cover plate set 3 Remove the evaporator cover aside Scotsman Ice Machine 14 Remove sump cover and water level sensor set ACAUTION Cleaner contains acids sump cover aside These compounds may cause 45 Pull water reservoir forward tip up and out of the Bol machine if swallowed DO NOT 16 Mix a locally approved sanitizer solution A recommended sanitizer is 1 two ounce packet of Stera Sheen Green Label to two gallons of lukewarm 95 100 degrees F water induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush 17 Thoroughly wash the water reservoir cover plate sump cover water distributors distributor covers evaporator covers right side panel liner curtains and reservoir with the sanitizer solution with water Remove all ice from the bin Wait until the Code Display blinks the characters Ad 1 then pour 24 ounces of Scotsman Clear 1 Scale remover into the water reservoir The machine will go through a circulation and flushing 19 Thoroughl
58. r or condenser recommended for passing the refrigerant lines If the excess tubing is to be coiled spiral it through horizontally to avoid excess trapping in the lines 2 Have the roofing contractor cut a minimum hole 5 Have the roofing contractor seal the holes in the for the refrigerant lines of 2 Check local codes roof per local codes a separate hole may be required for the electrical power supply to the condenser Minimize tubing routed outside of the controlled space Best Practice Coil excess tubing inside the building in a horizontal coil January 2015 Page 11 C2648 Prodigy and Prodigy Plus Service Manual Coupling Instructions The couplings on the ends of the pre charged line It is important that ONLY the nut on the pre charged sets are self sealing when installed properly tube be turned or the diaphragms will be torn out by the piercing knives and they will be loose in the Follow these instructions carefully These steps must be performed by an EPA Certified Type Il or higher technician Initial Connections 1 Remove the protector caps and plugs Wipe the seats and threaded surfaces with a clean cloth to refrigeration system Note As the couplings are tightened the diaphragms in the quick connect couplings will begin to be pierced As that happens there will be some resistance to tightening the swivel nut 6 Mark a line on the coupling nut and unit pan
59. rmal control state January 2015 Page 17 C2648 Prodigy and Prodigy Plus Service Manual Use and Operation Once started the ice machine will automatically make ice until the bin or dispenser is full of ice When ice level drops the ice machine will resume making ice There are four indicator lights at the front of the machine that provide information on the condition of the machine External Indicator Lights e Power e Status e Water e Clean fT Indicator Lights amp Their Meanings po Power Status Water O a Scale amp Sanitize Steady Green Normal Normal bin full or making ice Blinking Green Self Test Failure Switching on or off ae ae Blinking Red Diagnostic Lack of water shutdown or if making ice temperature sensor failure Da a es and anes Blinking Yellow ef in Cleaning mode e If the Water light is on the machine has sensed a lack of water Check the water supply to the machine The water may have been shut off or the water filter cartridges need to be changed If the Clean light is on the machine has determined that it may need to be cleaned Contact an authorized Scotsman service agent and have the machine cleaned de scaled and sanitized Other Indicators Removal of the front panel allows review of the Code Display and Component Indicator Lights Note A Component Indicator Light switches ON to indicate that the component is operating Note There are three Curtain Switch lights SW1
60. robe there should be continuity If not clean the probes and recheck Test the controller s water level sensor circuit Reconnect electrical power Unplug harness from water level sensor the sump empty light should be ON Jump harness wires white and black The sump full light should be ON Jump harness wires white and red the sump full and sump empty lights will be OFF Check harness wire by wire for continuity if there is no reaction from the controller during this test GAS t COMPRESSOR READY T HARVEST Water touching the sensor s short probe triggers the Sump Full light No water touching the mid length probe triggers the Sump Empty light During most of the freeze cycle neither light will be on January 2015 Page 45 C2648 Prodigy and Prodigy Plus Service Manual Temperature Sensors d 2 Check controller If the sensor calibration is completely out of range the code display will read either 5 or 7 Check with an ohmmeter Open control box cover unplug sensor from J6 Water temperature probe Measure the temperature of the water Push and release the clean button Wait one minute Measure the resistance of the water probe two leads next to the open socket and compare to the resistance in the chart for that temperature Any reading within 1000 ohms is acceptable Discharge sensor Measure the temperature of the discharge line as close to the sensor as possible Measure the resistance of the discharge temperat
61. s Service Manual Refrigeration Refrigerant R 404A Charge 240 ounces Compressor Copeland hermetic Compressor Amps e Freeze 13 2 to 12 9 declining to 9 6 at the end of the freeze cycle 11 6 to 11 9 at five minutes e Harvest 12 7 to 11 8 Expansion valves Non adjustable internally equalized one per evaporator Hot gas valves Pilot operated line voltage coils One per plate Condenser Upflow type with aluminum coils Headmaster Included with condenser Remote Systems Head pressure control valves in condenser No check valves Controller pumps unit down by closing the liquid line valve and keeping the compressor on for a fixed time period at shut down High pressure cut out Shuts compressor off if discharge pressure is too high automatic reset e Cut out at 450 PSIG e Cut in at 350 PSIG Evaporators Unified cell plate Nickel plated copper 18 tall Small cube half dice medium cube full dice e Small cube 7 8 high x 7 8 deep x 3 8 high e Medium cube 7 8 high x 7 8 deep x 7 8 high January 2015 Page 33 C2648 Prodigy and Prodigy Plus Service Manual Refrigeration Schematic Remote Condenser Suction N Evaporator Discharge Pressure Control Liquid Compressor N Receiver ge tat Liquid Line Valve Heat Exchange Accumulator C2648R January 2015 Page 34 C2648 Prodigy and Prodigy Plus Service Manual Water System Batch type Water reservoir contains full wate
62. s then depress Clean for 3 seconds At the end of the test cycle the liquid line valve will be powered and the Condenser Fan motor indicator light will be on The liquid line valve should be open at that time 2 If itis not repeat the test but check the voltage to the liquid line valve coil it must receive full voltage at the liquid line lead connection at the end of the test 3 If there is voltage and the valve does not operate replace the valve coil If there is no voltage check the controller high voltage harness connection The liquid line solenoid lead is the top wire 4 Check voltage at the end of the test when the Condenser Fan indicator light is On Note high voltage power is supplied to the bottom pin from the contactor line Refer to the machine wiring diagram as needed Test using an ohmmeter Disconnect electrical power Unplug liquid line coil from harness Measure liquid line coil resistance If open replace the liquid line valve coil Vv A Oz YW z Li oS Z QO O FAN 7 AU SOLENOID This light will be ON when the liquid line solenoid has power January 2015 Page 51 C2648 Prodigy and Prodigy Plus Service Manual Inlet Water Solenoid Valve Test using the controller s indicator lights 1 Shut unit off by holding the Off button for 3 seconds Wait four minutes 2 Push and release the On button observe the Water Solenoid indicator light After the unit drains the reservoir the inlet w
63. s will shut off for 30 seconds This is the anti slush period At this time the controller checks the conductivity of the water in the reservoir for the auto purge feature After the water pumps restart the Sump Full light will go out and neither sump lights will be on for the rest of the freeze cycle When the ice has built up enough so that the water flowing over the evaporator comes into continuous contact with the ice level sensor the Ready to Harvest light will begin to blink on and off When it has been On continuously for 3 seconds the controller will switch the machine into a Harvest cycle Indicator Information The display shows a non blinking H The Power and Status Lights will be Green The compressor and hot gas valve lights will be ON After a few seconds the water pump purge valve and inlet water valve lights will switch on The three harvest assists are connected in parallel with the three hot gas valves Although energized throughout the harvest cycle a harvest assist probe does not move until the ice has become partially loosened from the evaporator plate by the action of the hot refrigerant gas passing through the evaporator serpentine The remote condenser fan motor is powered by the compressor contactor so it will be operating during the harvest cycle The operating water pump and purge valve will shut off when the purge level setting time has been reached either the manual time or the automatic time The inlet water valve w
64. ssor Debris in refrigeration system Recover charge Open quick connects check for loose or missing foil Open liquid line and hot gas valves Check for debris Replace drier evacuate and weigh in nameplate charge Shut down on maximum harvest Ice bridge thickness too small not Check and adjust if needed time enough ice to open curtain Ice bridge thickness too large ice Check and adjust if needed frozen to evaporator frame Purge valve does not open water Check purge valve melts ice bridge not enough ice to open curtain Incomplete ice formation Check water distributor for partially plugged holes Curtain out of position Check curtain for swing restriction January 2015 Page 41 C2648 Prodigy and Prodigy Plus Service Manual Diagnostics Shut down on maximum harvest Curtain switch does not open when Check switch with ohmmeter location Hot gas valve does not open Check hot gas valve check f anton uang at mode Harvest assist probe out of position Check harvest assist mechanism Shut down on minimum freeze Grounded ice thickness sensor or Check sensor for dirt and position time bridge too thin Clean and adjust gap to evaporator surface using 7 32 drill bit as a gauge Improper water flow Check water distributor cover be sure it is sealed tightly Check clean spillway surface Low Ice Making Capacity o o Problem Long freeze cycle Low on refrigerant Add refrigerant if cycle time drops check f
65. st will continue until the default harvest time expires Default harvest time is 3 minutes The machine will then return to a normal freeze cycle Water Interruption e The controller will attempt to fill the reservoir every twenty minutes until it is successful On Off Switch Access All models ship with the On and Off switches front accessible If desired the On and Off switches can be covered by changing the bezel in the front panel s trim strip The Prodigy Plus models have the switches in the lower left corner and they can also be covered up by a fixed door See illustration below Auto Alert Indicator Lights January 2015 Page 38 C2648 Prodigy and Prodigy Plus Service Manual Control Button Use from standby Set purge level 1 5 1 is minimum 5 is maximum or Automatic e Hold off button in for 3 seconds Release e Press and release the On button to cycle through and select one of the five purge settings or to use the Automatic setting Recall diagnostic code e Hold off button in for 3 seconds Release e Press and release the Harvest button to cycle thru the last 10 error codes from most recent to oldest Clear diagnostic code e Hold Clean and Harvest buttons in for 3 seconds to clear all prior codes Reset control e Depress and release Off then depress and release On Start Test Mode e Hold Off button in for 3 seconds Release e Hold Clean button in for 3 seconds Release Lock Unl
66. the compressor is High pressure cut out e There is a high pressure cut out switch that shuts the power off to the compressor contactor if the discharge pressure is too high It is an automatic reset Harvest Assists Originally solenoids later units have motors e Operated by the controller through a relay In parallel with the hot gas valve Cycles on and off at the beginning of a restart Energized throughout the harvest cycle Line voltage coil Liquid Line Valve e Opened by the controller to start a freeze cycle Closed to shut unit off Line voltage coil Hot Gas Valves e Operated by the controller through a relay In parallel with the harvest assist Cycles on and off at the beginning of a restart Energized throughout the harvest cycle Line voltage coil January 2015 Page 30 C2648 Prodigy and Prodigy Plus Service Manual Electrical Component Details Controller e Senses ice thickness water level water temperature discharge temperature Controls compressor contactor fan motor water pump inlet water valve hot gas valve purge valve harvest assist solenoid Indicates status and component operation 12 volt Transformer e 12 volt secondary supplies power to controller only Water Level Sensor e Three probe conductivity sensor Longest probe is common mid probe is refill sump top probe is full sump Refill can occur at any time Ice Thickness Sensor e Single wire conductivity sensor Circuit made from co
67. ure sensor two leads farthest away from the open socket on the harness connector and compare to the resistance in the chart for that temperature Any reading within 1000 ohms is acceptable Alternate procedure Remove both water and discharge sensors from their places on the ice machine Put both into a container of ice water Put a thermometer in the water When the thermometer is at 32 degrees F check the resistance of each sensor The resistance should be within 1000 ohms of 32649 Water Temperature er wa il lt Fe Discharge Temperature January 2015 Page 46 C2648 Prodigy and Prodigy Plus Service Manual Water Pumps Test using the controller s indicator lights 1 Check the indicator light during the freeze cycle The light will be On for all but the 30 second anti slush period so observe the light for one minute When it is On check the water pumps both should be operating If only one is operating check for voltage to that pump if there is no voltage replace that pump One of the pumps will operate during the part of the drain cycle when the purge valve light is on If both are off check for voltage at the dump valve relay The coil of that relay should have power when the purge light is on connecting power to one of the pumps Check for voltage from the relay to the pump If there is voltage to the pump and it does not pump water replace the pump If there is no voltage at the pump and the purge valv
68. ximum harvest time Number of evaporator plates Prodigy Plus models have a connector for the lower light and switch panel The service controller is OK to use on all Prodigy cubers without that connector The service controller has a selector switch that allows it to be used as a replacement part in any of the Prodigy models in production at the time the controller was manufactured As new Prodigy models are introduced those models will be added to the list of models new service controllers will work with January 2015 Page 55 C2648 Prodigy and Prodigy Plus Service Manual Thermistor Values Deg F Ohms Deg F Ohms Deg F Ohms Deg F Ohms Deg F Ohms 0 85325 51 19381 102 5569 153 1927 204 774 1 82661 52 18873 103 5446 154 1890 205 761 2 80090 3 18381 104 5325 155 1855 206 749 3 77607 54 17903 105 5208 156 1819 207 737 4 75210 55 17439 106 5093 157 1785 208 724 5 72896 56 16988 107 4981 158 1752 209 713 6 70660 57 16551 108 4872 159 1719 210 701 7 68501 58 16126 109 4766 160 1687 211 690 8 66415 59 15714 110 4663 161 1655 212 679 9 64400 60 15313 111 4562 162 1624 213 668 10 62453 61 14924 112 4463 163 1594 214 657 11 60571 62 14546 113 4367 164 1565 215 646 12 58752 63 14179 114 4273 165 1536 216 636 13 56995 64 13823 115 4182 166 1508 217 626 14 55296 65 13476 116 4093 167 1480 218 616 15 53653 66 13139 117 4006 168 1453 219 606 16 52065 67 12812 118 3921 169 1427 220 597 17 50529 68 12494 119 3838 170 1401 221 587 18 49043 69 12185 12
69. y wash the interior of the evaporator 18 Thoroughly wash the shelf of the ice machine cabinet where the reservoir was resting cycle and then shut off displaying 2 This will take compartments including the back panels and 35 minutes evaporator edges 6 Check for scale repeat steps 2 thru 5 if scale is 20 Return the reservoir to its original position still evident 21 Return the sump cover water level sensor water Disconnect pump hoses from water distributors distributors with covers pump hoses evaporator covers right side panel liner and curtains to their Depress snaps and pull water distributors forward in a f i original positions on the ice machine and out of the machine Remove covers and inspect for scale Remove any remaining scale 22 Return the pumps to their normal positions January 2015 Page 21 C2648 Prodigy and Prodigy Plus Service Manual 23 Pour one gallon of the sanitizer solution into the reservoir 24 Push and release the yellow Clean button 25 Operate the machine until it stops 26 Return all removed panels to their original positions 27 Push and release the green ON button to resume ice making Remove and discard all ice Clean Storage Bin Mix a solution of Scotsman Clear 1 ice machine scale remover and wash all interior surfaces of the ice storage bin to remove any mineral scale build up Pour excess cleaner solution into the bin s drain Mix a solution of sanitizer and thoroug

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