Scotsman Ice SCN60 User's Manual
Contents
1. 1 Shut off water supply 10 2 Remove drain plug inside bin compartment 3 Disconnect power supply or unplug unit Hazard of Electrical Shock Disconnect Electrical Power Before Servicing 4 Uninstall unit and pull out as needed for top and back access 5 Remove top panel 11 6 Remove back panel 7 Remove ice chute bin wall by unscrewing 2 12 thumb screws and lifting it out 13 14 8 Remove 2 orange wires from water level sensor on top of float tank 9 Rotate ice sweep counter clockwise and remove ice sweep May 2011 Page 14 Lift and remove ice chute Remove 4 screws securing float reservoir amp set aside Remove gray water tube from evaporator inlet Disconnect power connection to auger motor Remove 4 bolts securing breaker head to freezer by using allen wrench socket type best method SCN60 Service 15 Remove breaker amp set aside 20 Carefully lift and rest gearbox amp bracket against back of compartment lip 16 Pull auger from freezer by lifting straight up be careful as auger has sharp edges Note If auger does not lift freely see Auger Removal Procedure 21 Remove four 5 32 allen head screws holding adapter to evaporator 17 Inspect auger flights for signs of wear 18 Inspect evaporator barrel for signs of radial scoring 19 Remove 4 screws securing gearbox bracket to compartment base 22 Remove evaporator from gearbox2. Problem Likely Cause Probable Solution No ice No power Plug unit into power supply Unit switched off Push and release on off button No water water diagnostic light is on Restore water supply check sensor If RO water is too pure unit cannot operate Check float valve for restriction Check float valve shut off lever position Compressor on fan on auger motor not operating Check auger motor for voltage if none replace controller If there is voltage check auger motor windings if open replace auger motor Compressor on fan on auger motor cutting off on over amp safety Check evaporator for ice Thaw out and retry Check top bearing and condition of auger Replace if worn Operate unit for a short time with auger out of machine water shut off and water sensor bypassed If auger motor still overloads replace gear reducer Compressor on auger on fan blade not turning Check fan blade for ease of rotation remove any blockage and retry Check fan motor replace if not turning freely or motor windings open Auger motor on fan on compressor not drawing power Check compressor start relay check compressor windings Auger motor on fan on compressor cutting off on overload Check compressor See component diagnostics Compressor on fan on auger motor on ice sweep not turning Check ice sweep If tight to auger auger is not turning Gears
3. 4 Rotate ice sweep counter clockwise and remove ice sweep 5 Remove ice chute Note Be sure auger shaft is smooth and un damaged A dark finish at the bearing area is normal Replace auger if damaged Auger Replacement Auger replacement requires a new water seal Follow all steps to replace the water seal except substitute a new auger Auger Removal Procedure If the auger does not lift freely it may be stuck in the gear reducer To release it 1 Remove ice sweep 2 Remove 4 allen head bolts holding breaker to evaporator 3 Place 4 hex nuts 5 8 size as spacers overtighten between the breaker and the top of the evaporator CT BD Spacer Flat Washer Se 4 Place a large flat washer or suitable hex nut as a spacer over the top of the breaker 5 Thread a 5 16 18 x 1 inch bolt into the top of the auger thru the washer and or hex nut and screw the bolt into the auger As it tightens against the nut it should lift and loosen the auger Once the auger has moved it should lift out easily May 2011 Page 17 SCN60 Service Evaporator Replacement 1 Go through all steps to remove the gear 3 Disconnect electrical power reducer 4 Remove control box cover 2 Add temporary refrigeration system access valves to the discharge and suction sides of the 5 Unplug all wires refrigeration system 6 Remove screws holding controller to box 3 Recover the refrigerant 7 Remove controller 4 Un sweat the suctio
4. Water Supply The recommended water supply tubing is inch OD copper Stainless steel flex or reinforced PCV tube may also be used Install an easily accessible shut off valve between the supply and the unit This shut off valve should not be installed behind the ji j gt K 6 5 7 Z yr G D S A A L amp AQ 2 D _ K A A Z amp J amp A S J Q p Connect Water Supply Here z unit The water connection is at the back of the cabinet Connect using a compression fitting one is supplied tied to the water inlet tube When built in Coil enough tubing behind the machine so it can be pushed into the cavity without kinking the tubing May 2011 Page 10 SCN60 Installation and Use Electrical and Start Up The ice machine is supplied with a power cord Do not remove the grounding pin from the cord s plug Do not use extension cords Follow all codes Connect the machine to its own 115 volt 15 amp circuit 1 If the electrical outlet for the ice maker is behind the unit plug in the unit 2 Position the unit in the installation opening 3 Turn on the water supply Make sure that the ice maker is plugged in and the power is on 4 Slide unit into installation opening paying careful attention to water supply and drain connections Do not kink 5 Pour a couple of quarts
5. tools needed 1 4 amp 5 32 allen wrench T handle or socket type suggested Phillips screwdriver 12 inch or longer recommended Replace gear reducer and install a new water seal May 2011 Page 15 SCN60 Service Water Seal Replacement 1 2 Remove rotating half of water seal from bottom of auger 3 Go through the prior steps to remove the gear reducer of Water Seal Clean auger of any sealant at water seal mounting position Apply Sealant Here 7 Lubricate or moisten the outer edge of the new seal and push it into the bottom of the evaporator tube until flush with the bottom of the tube Be sure it is in as straight as possible Note Do NOT touch the inner ring of the water seal with fingers or sealant Wipe off with rubbing alcohol if they were touched Stationary Half of Water Seal Remove Old and Install New 8 4 Add a small bead of food grade silicone sealant 9 to the shoulder of the auger where the water seal will go Note Do NOT touch the mating surfaces of the water seal with fingers or sealant 5 Lubricate moisten lightly use food grade lube only the rubber part of the new water seal and slide it onto the auger rubber side against the auger shoulder Force it onto the sealant as far as it will go Remove the stationary half of the old water seal from the bottom of the evaporator May 2011 Page 16 10 11 12 Position the gear reducer unde
6. clearance is 0 in at the top 2 in at the rear and 1 8 in at each side Installations on a slab Use a pump model and pump the water to the point of drainage Pump models will pump 1 story 10 feet high Installations over a crawl space or basement Either gravity drain or pump model units may be used if there is not enough room behind the machine for a drain waste receptacle the drain will have to be below the floor Note When installed in a corner the door swing may be limited due to handle contact with the wall or cabinet face All models require a water supply Water supplies vary in the degree of mineral content High mineral content water will require more frequent maintenance Water filtration may improve the taste of the ice as well as cut down on some of the mineral build up May 2011 Page 4 SCN60 Installation and Use Familiarization The control panel is visible when the door is opened It has three indicator lights and two switches Control Panel The model and serial number plate is located on the bottom of the control panel box The Bin Light l Oll and Ice Level Sensor are also visible from that angle as is the Ice Chute EE Serial Plate Control Sensor a 7 a Serial Number Plate The Scoop Holder is located on the right side of the O o0 ice storage bin The normal ice level is about level with the scoop h
7. SCN60 Installation and Use Introduction This manual includes information for the installation operation and maintenance of the SCN6O residential ice machine The SCN60 was developed to offer fans of Scotsman s Nugget Ice form the ability to have that ice in their homes Previously Nugget Ice was only available in commercial establishments where it developed a strong following because of the chewable nature of the ice This machine makes authentic Nugget ice using the same process as the larger commercial machines Table of Contents Outdoor Use Notice Keep from freezing Severe damage will occur to the unit if left in or operated in temperatures beyond the limits listed in this manual That damage is NOT covered by warranty Keep dry Do not locate in low lying areas where puddles will accumulate Provide Shade Heat gain from the sun will reduce the unit s ability to make and store ice and ultraviolet radiation from the sun can potentially damage the unit s plastic components Water Supply Avoid a long run of hose or tubing exposed to the sun Plastic water supply tubing should be rated for potable water and include UV protection Copper tubing is recommended Back Flow Prevention The unit includes back flow prevention no additional check valve is required Drainage Do Not drain into swimming pool or onto grounds May 2011 Page 1 SCN60 Installation and Use Product Description This ice mac
8. alve lever down to the On position After 40 minutes the ice machine and all the control panel lights will shut off 13 Pull the drain plug again to drain the system then replace it 14 Return the reservoir cover to its original position 15 Return the upper back wall of the bin to its original position and secure it with the original screws Push in at bottom to snap it into place 16 Pour a gallon of hot 95 F 115 F water into the bin to flush out the drain and melt all ice that was made during the cleaning process Be sure all ice is melted 17 Clean the bin liner of mineral scale by using any left over scale remover solution to scrub the scale off of the liner If none is left over mix a solution of 2 5 ounces of Clear 1 Scale Remover and 1 quart of water 18 Rinse the liner with hot water 19 Sanitize the bin interior 20 Push and release the On Off button to restart ice making The ice scoop should be washed regularly wash it just like any other food container Other Maintenance While cleaning the system with scale remover check for water leaks at the bottom of the evaporator If any are found call for service Note It is normal for some lime scale to form on the gear reducer cover Wipe up any loose scale Check the top bearing The top bearing is non metallic and requires no lubrication However it should be ch
9. and the attached float valve is open As water enters the reservoir it also flows into the reservoir s outlet tubing which leads to the evaporator water inlet filling the evaporator The float rises as the water level is increased until it has lifted high enough to force the water valve to close stopping the flow of water When the machine is making ice the water level will drop Hose to Evaporator Inlet __ Evaporator Inlet Hose to drain May 2011 Page 5 SCN60 Service Storage The ice storage system is made up of a plastic lined ice storage bin covered by an insulated top panel and an insulated swing open door with gasket The ice storage bin is foamed in place so the side panels are not removable l LA Z J DS May 2011 Page 6 SCN60 Service Performance and Technical Specs Overall e Refrigerant 4 5 oz R 134a e Compressor Hermetic 700 BTUH e Condenser Forced draft e Fan blade 3 blade 6 inch e Evaporator Stainless steel tube copper coil jacketed e Metering device Cap tube e Auger drive output speed 11 RPM e Water valve Float in reservoir e Drain pump Magnetic drive controlled by pressure switch e Bin control Ultrasonic Electrical Components e Compressor 2 9 to 3 1 amps e Fan motor e Auger motor amp draw 4 to 5amp e Drain pump motor e Drain pump switch e Controller e Transformer e Water sens
10. ct water supply 2 Disconnect water supply 3 Disconnect unplug unit from power supply 3 Disconnect unplug unit from power supply 4 Empty bin of ice and water 4 Drain evaporator 5 Remove top panel 5 Empty bin of ice and water 6 Remove both bolts holding motor to gear reducer 6 Disconnect drain hose from bottom of bin 7 Lift motor winding and capacitor up and out of 1 Remove top back and side service panels machine 7 Remove door 8 Cut wires and separate winding from capacitor Change either and reconnect motor to 8 Remove kickplate capacitor 9 Remove front service panel Note Be SURE wires are connected per the label on the motor Black to Black to Capacitor and Red 10 Remove screw holding service panel bracket to Capacitor If connected incorrectly motor will turn the wrong way Output shaft or auger MUST 11 Remove two screws holding baffle at right side turn CCW counterclockwise looking from above of condenser or the unit will be damaged during ice making 12 Unplug wires from compressor and fan motor Be sure wires from control box to base are free and disconnected 9 Pull rotor from gear reducer if changing motor 10 Insert new rotor if changing motor 13 Remove four screws holding each corner of the 11 os it iv dhass s tothe base Reinstall winding and capacitor assembly Secure with the original screws 14 Remove two screws holding left rear strut to 12 Ret Il panels to their original pos
11. e is pushed through the holes excess water is squeezed out The ice comes out of the holes shaped as a rod of ice The rods of ice are broken off by being pushed against the tapered flange above the holes forming the irregular lengths of nugget ice The ice sweep rotating with the auger moves the ice to the ice chute where it falls by gravity into the storage bin Suction Line Compressor Exchange AANA A A v oN vv Air Cooled _ Condenser Liquid Line J Capillary Tube Heat Evaporator Assembly p P Auger Drive System X Refrigeration System Schematic May 2011 Page 2 SCN60 Service Evaporator and Auger Bearing Ice Outlet Heat Exchange Tube Coil Rotating Half of Water Seal x Water Inlet Stationary Half of Water Seal Cut Away View May 2011 Page 3 SCN60 Service Control System The control system operates the machine The controller operates on 12 volts AC supplied by the transformer It uses an ultrasonic ice sensor to measure ice level The ultrasonic system transmits sound waves into the ice storage bin and measures the return time when the return time is longer than the preset time for bin full the controller switches the ice machine to an ice making mode During ice making the compr
12. e limits can cause problems that are not covered by the warranty and if extreme cause damage to the unit Water Quality The water to the machine must be potable or fit for human consumption Beyond that water supplies vary in the degree of mineral content As this ice machine makes ice all the water that flows into the machine is changed into ice That includes any minerals that might be in the water However during ice making some minerals will stick to the ice making components The higher the mineral content the more mineral build up will occur Water filters are a partial help as they will remove the suspended solids but water treatment is needed for the dissolved solids which are part of the water and cannot be filtered out RO Water This machine can be supplied with Reverse Osmosis water but the water conductivity must be no less than 10 microSiemens cm A reverse osmosis system should include post treatment or blending to satisfy the R O water s potential aggressiveness Deionized water is not recommended and could damage the machine Because water softeners exchange one mineral for another softened water may not improve water conditions when used with ice machines Electrical power The unit must be on its own 115 volt 60 Hz 15 amp circuit It is equipped with a power cord and can be plugged into a nearby outlet Extension cords are not allowed by most codes Follow all applicable codes Warranty Info
13. e top of the front of the bin When the ice level drops an inch or more the machine will restart A capacity check will provide some idea of how much ice is being made 1 Operate the machine for 10 minutes until it is stabilized 2 Catch the ice as it is made for 15 minutes 3 Weigh the ice and any melted water 4 Multiply the weight from step 3 by 96 to get 24 hour capacity 5 Compare to the chart below 90 F Air 70 F water 59 Ib 24 hours 70 F Air 50 F water 87 b 24 hours Note Mineral scale build up inside the evaporator will reduce the ice making rate as will any lint or dirt on the air cooled condenser or fan blade All ice making capacities listed by Scotsman are for clean new machines The ice storage bin is not refrigerated it is an insulated ice chest so there is meltage A restricted drain or poorly operating drain pump will allow water to puddle in the bin increasing the ice melt rate A stopped up drain will cause the bin to fill with water Refrigerant charge The charge is very small Any leak will immediately result in a loss of ice making capacity and continued leaking will result in no ice being made The system is sealed access must be by clamp on valves which must be removed after the repair is completed Noise Normal ice making produces very little noise there will be sound from the compressor fan and auger drive motor If there is a d
14. e will cause water to back up into the ice storage bin and melt the ice Gravity drain tubing must be vented have no kinks and slope to the building drain Air gaps are typically required by local code 1 Place the ice machine in front of the installation opening Adjust leveling legs to the approximate height 2 Remove the upper back panel if needed for access to the drain fitting Note If you are connecting a gravity drain model and the drain opening has been located in the floor under the base pan according to the pre install specifications follow steps 3 through 5 to drain the unit through the base If not proceed to step 6b 3 Remove the clamp and barbed elbow and take off the plastic cover in the base pan below the drain hose 4 Connect a straight 5 8 barbed connector to the drain hose securing with the clamp removed in step 3 5 Cut an 8 piece of 5 8 ID X 7 8 OD tygon clear plastic tubing Slide one end of the tube onto the outlet of the barbed connector and secure with a Drain Tubing Inside Cabinet clamp Leave the other end of the tube lying on the floor of the base pan until the unit is positioned over the floor drain 6 Route the drain tube Either a Insert the drain tube through the base pan into the floor drain or b Route the drain tube through the hole in the lower back panel and connect to barbed elbow and secure with a clamp 7 Reinstall the upper back panel
15. ecked for wear occasionally The top panel must be removed to access the bearing May 2011 Page 16 SCN60 Service SCN60 service This section contains information for the service and repair of the SCN60 ice machine Service Table of Contents May 2011 Page 1 SCN60 Service Components e Refrigeration system including air cooled condenser compressor capillary tube and evaporator e Control system including ice level sensor water sensor auger motor sensor controller control pad and transformer e Auger drive system including auger motor gear reducer and auger e Auger support system including top bearing and water seal e Water system including the float and reservoir e Storage system including ice storage bin drain and door The SCN6O0 is a continuous flow ice machine When the control system senses that the storage bin s ice level is low it turns on the compressor fan motor and auger drive motor During ice making the refrigeration system takes heat from the evaporator The evaporator is a vertical refrigerated stainless steel tube containing water and a slowly rotating auger When the water gets to the freezing point ice begins to form That ice is very soft and is pushed up the evaporator tube by the auger As ice is made more warm water enters at the bottom The soft mushy ice is forced up to the top of the evaporator s tube where it is forced through nine tapered holes As the ic
16. els one that drains by gravity and one that has an internal drain pump Drain Pump Model drain installation 1 Locate the coil of 3 8 ID plastic drain tubing secured to the back of the unit 2 Route the plastic drain tube from the back of the unit to the drain connection point The drain connection point can be as high as 10 feet above the ice machine The drain pump includes a check valve to prevent re pumping water in the drain hose IMPORTANT NOTE Often an air gap is required by local codes between the ice maker drain tube and the drain receptacle Water Supply The recommended water supply tubing is inch OD copper Stainless steel flex or reinforced PCV tube may also be used Install an easily accessible shut off valve between the supply and the unit This shut off valve should not be installed behind the unit The water connection is at the back of the cabinet Connect using a compression fitting one is supplied tied to the water inlet tube When built in Coil enough tubing behind the machine so it can be pushed into the cavity without kinking the tubing amp D q R G DG D g amp 2 AS D l Connect Water Supply Here S Pump Drain Discharge Tubing May 2011 Page 9 SCN60 Installation and Use Plumbing Gravity Drain Model Caution Restrictions in the drain system to the machin
17. essor fan motor and auger motor are operating The control system has two safeties It will not operate the machine without water and it will not operate the machine if the auger motor is drawing too much current or if it isn t drawing any current The water sensor is checking the conductivity of the water in the water reservoir If there is no water in the reservoir the conductivity will be zero and the controller will either not start ice making or will stop making ice The current or amps of the auger motor are continually monitored by the controller during ice making If the current is too high indicating an overload the controller will stop ice making If the current is zero indicating an auger motor failure the controller will also stop ice making The control pad has two switches and three lights The left switch button is On Off The right switch button is Clean Reset The left Ice Making light is a status light it is ON when the machine has been switched to an ice making mode The center light is a Water light it will be ON when the controller has sensed that there is no water available It will go out when the water supply has been restored The right light is a Time to Clean indicator light It is switched ON by the controller after six months of power connect time It will go out after the machine has been cleaned following the process in the Maintenance section Glows Green when unit is switched On On Off Cont
18. hine is designed to be used indoors in a controlled environment or outdoors within certain limits The SCN6O0 is made up of two major systems the ice making system and the ice storage system The ice making system is a continuous flow type ice machine it makes ice when the ice level becomes low and stops when it is full The ice storage system is an insulated chest with a drain at the bottom for melting ice It is not refrigerated insuring that the bin contains fresh ice Installation Information Dimensions The cabinet is fourteen and seven eighths inches wide by thirty three and three eighths to thirty four and three eighths inches high Utility and Operational Requirements e The SCN60 must be connected to a potable water supply e The water supply must have a conductivity of at least 10 microSiemens cm e Minimum water pressure 20 psi e Maximum water pressure 80 psi e Minimum water temperature 40 degrees F e Maximum water temperature 90 degrees F It is designed to operate in wide range of air temperatures e Minimum air temperature 50 degrees F e Maximum air temperature 100 degrees F Although the machine will function within the listed ranges it works best at water temperatures between 50 and 60 and air temperatures between 60 and 80 Note Ice making capacity goes down as the environmental temperatures go up and will be severely reduced at temperatures over 90 F Operating a unit outside of th
19. ice and or any standing water 1 If equipped with drain pump follow all steps to remove pump 3 Disconnect power or unplug unit 2 Unplug fan motor connection 4 Uninstall and pull unit out to get access to left side service panel 3 Remove four screws holding fan motor brackets to shroud 4 Pull fan blade and motor from unit 5 Remove five screws and the service panel 6 Disconnect electrical plug to pump motor 5 If not equipped with a drain pump 7 Disconnect drain hose from pump inlet 6 Shut off water supply 8 Disconnect discharge hose from pump 7 Remove all ice and or any standing water 9 Remove two 3 8 inch nuts holding pump to base lift pump up and out 8 Disconnect power or unplug unit 10 Reverse steps to reassemble 9 Uninstall and pull unit out to get access to left side service panel 10 Remove five screws and the service panel 11 Unplug fan motor connection 12 Remove four screws holding fan motor brackets to shroud 13 Pull fan blade and motor from unit 11 Service blade or motor and reverse to reassemble May 2011 Page 19 SCN60 Service Compressor replacement 1 Shut off water supply 14 2 Disconnect power supply or unplug unit 15 3 Uninstall unit and pull out as needed for side 16 and back access 4 Remove back panel including drain and power 17 supply panels 5 Remove side service panel 18 6 Go through all steps to remove drain pump 19 and or fan motor 7 Remove drain hose f
20. itions eee eturn all p g p 15 Remove one screw holding left side panel to eS Beconneni Watir and Powel base 14 Reinstall unit 16 Either go thru the process to remove gear reducer and evaporator from unit or recover refrigerant and disconnect at evaporator Note If leaving evaporator amp gear reducer in unit have a helper support them while the cabinet is removed May 2011 Page 21
21. lt into a cabinet It is an air cooled refrigeration system and so air flows in and out of it through the grill at the bottom front The grill must not be blocked by any covering door or other obstruction 4y Warm Air Out NI ANARE There are two models one is a gravity drain type and it must have a building drain connection below the level of the drain tube at the back of the cabinet the other is a pump drain model which can force drain water up a maximum of 10 feet allowing it to be located where a gravity drain isn t available Kickplate Extension In some situations the leg levelers will be extended enough to become visible A kit to extend the kickplate over the legs is KKPF Cabinet Stability In some free standing installations it may be prudent to add a bracket that secures the back of the cabinet to a wall That kit number is KATB Drain Conversion A gravity drain model can be converted to a drain pump model by installing a drain pump kit The drain pump kit consists of a drain pump wiring harness and associated tubing The part number is A39462 021 Installation Notes Built In Situations f a finished floor is to be installed in the area after the ice machine has been built in shims the expected thickness of the floor should be installed under the unit to keep the machine level with the planned floor level Note The water connection is at the back and adds a few inches to the cabinet depth Minimum
22. machine scale remover contains acids Acids can cause burns If concentrated cleaner comes in contact with skin flush with water If swallowed do NOT induce vomiting Give large amounts of water or milk Call Physician immediately Keep out of the reach of children Note Take care not to spill any scale remover on any nearby surface Immediately wipe any spill with baking soda and water 9 Fill the 16 oz squirt bottle with the diluted scale remover 10 Fill the reservoir with the scale remover solution using squirt bottle or other container That will be about 8 ounces or half a squirt bottle Fill Reservoir Using Squirt Bottle May 2011 Page 15 SCN60 Installation and Use 11 Press and HOLD both the Clean Reset and On Off buttons for 5 seconds The Time to Clean light will blink on and off 12 The auger motor alone will be operating for 10 minutes after that the compressor will start and in about 5 8 minutes the machine will start to make ice The Time to Clean light will now glow steady until the clean cycle is complete Caution Keep fingers away from moving parts After ice making starts continuously add scale remover solution to the reservoir to keep it about half full When all 16 oz of the the solution is used move the float v
23. metimes there will be little ice falling while at other times a group of nuggets will fall Some water drops may also come out with the ice Both conditions are normal Glows Green when unit is switched On ce Making On Off Control Button Glows Red when there is no water supplied to the machine Glows Yellow when it s time to clean the machine Clean Button The machine will NOT make ice when this light is on It will restart and the light will go out when the water supply is restored Control Panel May 2011 Page 12 SCN60 Installation and Use Maintenance Scotsman strongly recommends regular maintenance of this ice machine During normal operation mineral scale that is in the water supply will gradually build up on the ice making surfaces That build up can cause excessive loading of the ice making system which can cause premature failure Regular removal of the mineral scale will lengthen the product s life Suggested maintenance schedule every 6 months Type of maintenance Scale removal water seal check water reservoir check bin drain check air cooled condenser cleaning and storage bin sanitation Condenser cleaning The condenser is like the radiator on a car it has fins and tubes that can become clogged with dirt and lint To clean 1 Remove the kickplate and front service panel Surface 2 Locate the condenser su
24. n line and cap tube connections from the evaporator 8 Before touching replacement controller touch a metal surface of the cabinet to discharge any 5 Remove original dryer static electricity 6 Attach permanent access valves to system 9 Place new controller in control box connect all wires previously removed 7 Attach dry nitrogen to system and purge at about 1 lb pressure while brazing all 10 Reverse remaining steps to reassemble connections including access valves dryer and evaporator Ice level sensor 8 Remove nitrogen source evacuate system to 1 Pull out to get access to top panel 300 microns or less 2 Remove top panel 9 Weigh in the nameplate charge 3 Disconnect electrical power Water Reservoir 4 Remove control box cover 1 Pull unit out to get access to top and back panel 5 Unplug wire at J9 2 Shut water supply off Ice Level Sensor 3 Pull drain plug and drain all water Return plug to its original position 4 Loosen nut at water valve inlet and separate inlet tube from reservoir valve 5 Pull outlet hose off reservoir tank 6 Remove screws holding reservoir to unit and lift off 7 Reverse steps to reassemble 6 Remove 5 screws and lift sensor from control box Controller 7 Replace with new part 1 Pull out to get access to top panel 8 Reverse remaining steps to reassemble 2 Remove top panel May 2011 Page 18 SCN60 Service Drain Pump if equipped 1 Shut off water supply Fan Blade or Motor 2 Remove all
25. nary half pressed against slightly and water will flow into the reservoir through the partially open float valve It will flow in continually as ice is made Water quality Nearly all water supplies contain some impurities or minerals When ice is made those minerals can remain behind in the ice machine and coat its surfaces with a hard stone like substance known as scale This scale must occasionally be removed by scale remover Scale remover is a food grade acid that will dissolve the scale so it can be washed away Note it is important to ALWAYS dilute the scale remover when using it on this machine Never use undiluted scale remover Some water treatment devices make very clean water Reverse Osmosis is one of those and this machine may be used with RO water as long as the conductivity is greater than 10 microsiemens cm Use of de ionized water is not recommended and will void the warranty m Water Level Water Sensor Float Valve type of seal called a face seal with the outside the inside of the evaporator tube and a rotating half attached to the bottom of the auger The sealing action takes and Reservoir place where the faces of the two halves rub together Water is the raw ingredient of ice and it enters this machine through the compression fitting in the back That leads to the float valve and reservoir When the float is not supported by water the float arm is down
26. nside of the evaporator tube That scale must be removed by use of ice machine scale remover using the process described in Maintenance Heavy scale build up will require the process to be repeated The inside of the evaporator tube may be sanded vertically to remove tough build up Do NOT hone or clean with a wire brush on a drill as horizontal marks on the inside of the evaporator will restrict the flow of ice A damaged evaporator must be replaced The auger can also have scale build up which must be removed It works best when it is clean and shiny Note that a wet auger will appear clean but when dry the scale will be visible Dry off the auger use your heat gun to determine if it s clean If the machine has been operated with worn bearings the auger may have rubbed the evaporator wall If the spiral edges or flights of the auger are damaged the auger must be replaced The ice breaker at the top of the evaporator contains the pressed in bearing This bearing must not be greased If worn the breaker with bearing can be replaced The gear reducer is a sealed unit The only service part available for it is the drive motor and drive motor capacitor Lubricants and Sealants Food grade lubricant is useful in repair of this model Scotsman part number 19 0569 01 Food grade sealant is needed in repair of this model Scotsman part number 19 0529 01 May 2011 Page 13 SCN60 Service SCN60 Gearbox Access amp Removal
27. of water into the ice storage bin on drain pump equipped machines the drain pump should start and water should pump out Check for leaks 6 Replace the service access panel 7 Level the unit as needed Installation check list 1 Has the unit been connected to the proper water supply 2 Has the water supply been checked for leaks 3 Has the unit been connected to a drain 4 Has the drain been tested for flow and leaks 5 Has the unit been connected to the proper electrical supply 6 Has the unit been leveled 7 Have all packing materials been removed from the machine 8 Has the door covering been installed Initial Start Up 1 Turn on the water supply and check for leaks 2 Switch on the electrical power 3 Push and release the On Off switch to start the machine The Ice Making light next to the On Off switch will glow Green Warm air will flow out of the left front grill It will take about 10 minutes for the ice machine to begin dropping nugget ice into the storage bin It is normal for that ice to melt and ice will continue to melt but at a slower rate It will take about 6 7 hours to fill up the ice storage bin The bin holds about 20 Ib of ice when full Ice level control The ice level control for the SCN6O is an ultrasonic sensor located above the ice storage area It is automatic and there is no adjustment to make When ice melts or is used and the ice level drops below a preset distance
28. older TE n Scoop Holder May 2011 Page 5 SCN60 Installation and Use Decorating Features The machine ships unfinished allowing the attachment of a decorator door panel or a metal panel from Scotsman Door Panel The ice machine is supplied without a conventional door covering so it can be decorated to the user s preference Scotsman offers several coverings including white black and stainless steel In addition a custom built panel can be placed onto the door Door Panels Finished door panels are available from Scotsman for attachment to the machine or a custom panel can be made The panel kits are Kit Number Panel Finish Handle Finish KDFW White White KDFWS White Stainless Steel KDFB Black Black KDFBS Black Stainless Steel KDFS Stainless Steel Stainless Steel Door Panel Attachment To attach a Scotsman supplied panel Note If door swing is to be changed it must be done before panel is attached 5 Place the covers over the hinge areas and secure each cover to the door using a sheet metal screw 6 Insert hole plug over screw installed in step 5 7 Return the gasket to its original position Custom Panel A custom panel of wood or other material not exceeding 15 lb can be attached to the door Attachment is from the ice side of the door Holes are provided in the door for this purpose See instructi
29. ons in information packet to create and attach a custom panel The panel will be held on by 6 sheet metal screws and 2 machine screws 1 Remove the gasket and retain for later use 2 If the door panel is stainless steel remove any plastic covering the stainless steel panel 3 Place the panel onto the outside of the door and secure it to the door using two machine screws located at the left center and right center 4 Fasten the panel to the door using the 6 sheet metal screws In the hinge area use the outermost screw holes Hole Plug Cover Ga Casket May 2011 Page 6 SCN60 Installation and Use Door Panel Attachment Use Upper Hole at the Top Scotsman Door Panel Screw Hole Plu g Use Lower Hole at the Bottom Cover May 2011 Page 7 SCN60 Installation and Use Door Swing The door swing is reversible The door can be attached to open with hinges on the left or right using new hinge brackets shipped loose in the ice bin Retain all screws for re use To change 1 Remove hinge cover and innermost screw holding each hinge to cabinet loosen the other 2 Slide hinges to the side and remove door from cabinet Remove screws loosened in step 1 from both cross braces 3 Remove two screws securing top panel to back pull top panel back and remove from cabine
30. or e Ice level sensor e Membrane switch assembly Control Timers e Power interruption time to restart after power restored 2 minutes e Auger motor overload time to restart 4 minutes e Auger motor overload restart window 60 seconds e Auger motor low current time to restart 20 minutes e Auger motor low current restart window 60 seconds e Clean cycle time 40 minutes total Note During the auger motor restart window times there is no visible indication that the unit is in a restart mode Light Blink Information e All blink once and repeat every 2 seconds Auger motor overload e All blink twice and repeat every 2 seconds Auger motor low current e All blink once and repeat every 10 seconds controller failure e Water light blinks red water supply failure Controller Reset e Cycle power off and on Diagnostic Codes No diagnostic codes are kept Time to Clean indicator light standard interval to switch light on is 6 months it can be changed to once per year or disabled To Adjust 1 From Off press and hold the On Off and Clean Reset Buttons for 5 seconds 2 Press and Hold the Clean Reset Button for 5 seconds then press On Off Then press On off again to cycle thru the settings Ice Making Water ig 6 months On Off Off 1 year Off On Off Disabled Off Off On Light will automatically go out after a few seconds of inactivity Press Time To Clean
31. p by step process Pushing the Clean button while the Ice Making light is On does not start the clean cycle it is only active from Off Pushing the Clean button from Unit Off starts the clean cycle e Time to Clean light flashes e Auger motor operates for twenty minutes e Auger motor and compressor operate for twenty additional minutes e Unit shuts off Time to Clean reminder light switches Off Safety Shut Downs Lack of water It is critical that the unit not operate without a full charge of water The water sensor in the reservoir is used to check continuity through the water it is in contact with If there is no water present there will be no electrical continuity and the control system will stop the machine and cause the Check Water light to blink Red alerting the user of a lack of water When water has returned to the reservoir the unit will automatically restart Power interruptions If the power to the machine failed during normal operation the machine will automatically restart after a two minute delay If the unit had shut down because of a safety then the unit remains in the shut down state Auger motor overload If the auger motor current exceeds the preset limit for a certain time the controller will shut the compressor and auger motor off The controller will keep the compressor and auger motor off for four minutes then restart them The controller records each overload as a strike It will erase the strike
32. r the evaporator Push the gear reducer and adapter flange up into the bottom of the evaporator until the mounting holes line up This forces the stationary half of the water seal to the correct location Screw in the four allen head screws into the side of the bottom of evaporator tube Remount the gear reducer and evaporator assembly into the ice machine Secure the mounting pan with the original screws Carefully lower the auger with the other half of the water seal attached into the evaporator tube Rotate auger until it slips into place SCN60 Service 13 Slide breaker onto auger shaft Secure with the Remove 4 allen head screws holding breaker original four allen head bolts to evaporator 14 Reverse the balance of the steps to complete 7 Lift breaker off and replace with a new part putting the machine back together Gear Reducer Replacement 1 The gear reducer contains no internal serviceable parts Replace as a unit 2 Follow all steps to remove gear reducer from evaporator 3 Remove bolts holding gear reducer to mounting plate 4 Separate gear reducer from mounting plate and attach a new gear reducer Do not Note Do NOT overtighten bolts securing gear reducer to mounting plate Tighten only until the washer contacts the blue grommet Ice Breaker Replacement 1 Disconnect power supply or unplug unit 2 Uninstall unit and pull out as needed for top access 3 Remove top panel
33. rain pump it will cycle occasionally too If the machine is making an unusual noise that might be a sign that it needs to be cleaned of mineral build up May 2011 Page 12 SCN60 Service Removal and Replacement Component Access The machine is designed to be cleaned while built in See the Maintenance section for more information Most components require the machine to be removed from a built in situation e Fan motor side service panel e Controller top panel e Auger motor top panel back panel e Ice sensor top panel e Drain pump side service panel e Top bearing top panel e Gear reducer top panel back panel e Ice sweep top panel e Water seal top panel back panel bin back panel e Water reservoir or float top panel Evaporator Auger Water Seal Gear Reducer Service The auger top bearing water seal and gear reducer can be replaced without disturbing the refrigeration charge If the evaporator must be replaced then the refrigeration system must be accessed so the charge can be recovered Evaporator construction The evaporator is made up of a stainless steel tube wrapped with a coil of copper and then heavily insulated There is no refrigerant path to the water inside of the evaporator The inside of the tube is polished and rifled with12 vertical grooves that help guide the ice straight up the tube It is normal for mineral scale from the water to form on the i
34. ressure does not improve capillary tube may be restricted If pressures improve find and correct refrigerant leak If compressor temperature is normal and compressor is drawing high amps check start relay If relay is good and compressor is not overheating but drawing high amps replace compressor Pump Switch Pump model only The pump switch activates the pump based on pressure to it from water inside the drain hose to the pump inlet It is normally open When pressure increases the switch closes turning on the pump motor until the pressure falls The safety switch the red one is normally closed and operates at a higher activation pressure than the pump switch It stops operation of the machine if it opens Ice Level Sensor To operate the unit must have e Power to the controller e Water sensed e Call for ice With power on and Ice Making light on check sensor connector if secure and the unit not operating remove connector and jump the two middle pins at J9 on the controller together Unit should start If it does replace the sensor if not replace the controller May 2011 Page 11 SCN60 Service Ice Capacity The rate of ice making is relatively fixed it depends upon the heat load and the ambient temperature the machine is operating in As either increase the amount of ice made will decrease The machine will work to keep the ice bin full A full bin of ice is when the ice level is even with th
35. rface 3 Vacuum the surface removing all dust and lint Caution Do not dent the fins 4 Return the kickplate and front service panel to their original positions Fasten them to the cabinet using the original screws Winterizing 1 Clean the ice making system per the instructions in the Maintenance section 2 Open the door and push and release the On Off switch to turn the machine off 3 Turn off the water supply 4 Remove the back wall of the ice storage bin 5 Remove drain plug and drain the water reservoir return plug to its original position 6 Drain pump models should have about 1 2 gallon of RV antifreeze propylene glycol poured into the ice storage bin drain Note Automotive antifreeze must NOT be used 7 Switch off and unplug the machine May 2011 Page 13 SCN60 Installation and Use How to remove scale from the ice making system Cleaning this machine involves adding a solution of scale remover and water to the ice machine and continuing to add it as it makes ice The scale remover must be diluted to the correct ratio A squirt bottle will make adding the scale remover much easier when the unit is built in If not built in remove the top panel for reservoir access Recommended tools Rubber gloves squirt bottle amp scale remover Pre Mixed 16 oz squirt bottle of scale remover is part number 19 0664 01 1 Scoop out and discard all of the ice 2 Press and release the On Off but
36. rmation Warranty information is supplied separately from this manual Refer to it for coverage In general the warranty covers defects in materials or workmanship and does not cover corrections of installation errors or maintenance May 2011 Page 2 SCN60 Installation and Use Cabinet Dimensions FLOOR DRAIN ACCESS HOLE 37 8 20 3 8 3 4 22 3 4 SHEET METAL DOOR FRONT IF DOOR KIT INSTALLED 63 MIN CABINET DOOR 23 8 DOORKIT AND HANDLE 1 4 0 D COPPER WATER INLET aus COMPRESSION FITTING PROVIDED 333 8 MIN 343 8 MAX 29 1 4 21 2 AIR OUT 1 LEG ADJUSTMENT 4 PLACES 115V POWER CORD LEFT SIDE SVC 115 8 DRAIN ACCESS FLEXIBLE TUBING ACCESS PANEL 3 8 LD PUMP MODEL INCLUDED 5 8 LD GRAVITY MODEL NOT INCLUDED Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance They meet or exceed the standards of agencies like ETL Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way including the use of any parts 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 designs are subject to change without notice May 2011 Page 3 SCN60 Installation and Use Location Recommendations The machine can be bui
37. rol Button Glows Red when there is no water supplied to the machine Glows Yellow when it s time to clean the machine Clean Button The machine will NOT make ice when this light is on It will restart and the light will go out when the water supply is restored Control Panel May 2011 Page 4 SCN60 Service Water System The auger is driven at about 11 RPM by the gear reducer The gear reducer is a sealed component and does not require lubrication as it contains a charge of grease The auger motor drives a set of gears that all together reduce the motor speed to the 11 RPM output speed and correspondingly increasing the torque The output shaft of the gear reducer is hollow to accept the square end of the auger The auger is one of the key components in this product It is a precision machined part cut from solid stainless steel bar stock It fits the inside of the evaporator tube very closely and is aligned by the gear reducer at the bottom and a self lubricating bearing at the top As ice is made and forced up the evaporator the auger is being pushed down That thrust is supported by the bearings in the gear reducer Those bearings also provide alignment for the bottom of the auger keeping it centered in the evaporator tube The top bearing provides auger alignment at the top Water is kept from leaking out the bottom of the evaporator by the water seal The water seal is the diameter of a statio
38. rom unit oe 8 Add temporary refrigeration system access valves to the discharge and suction sides of the refrigeration system 21 9 Recover the refrigerant 10 Remove the four hair pins securing compressor to chassis 3 11 Disconnect wires overload and and relay from compressor 24 12 Push back suction line insulation 13 Unsweat the discharge and suction connections at the compressor May 2011 Page 20 Remove the compressor from the unit Remove dryer from unit Attach permanent schrader access valves to unit Attach dry nitrogen supply to access valves purge at about 1 Ib pressure during brazing Install new dryer Install new compressor Install at least 3 of the hair pins to secure the compressor The fourth is optional Make all braze connections needed to seal system Remove nitrogen supply Evacuate system to at least 300 microns Weigh in nameplate charge Reconnect all wires components and panels removed to access compressor Reinstall unit Operate unit and test SCN60 Service Bin and Cabinet The bin and cabinet can be separated from the 17 Lift bin and cabinet off chassis base Either the ice making evaporator system must be lifted out and securely suspended or the Auger Motor or Motor Capacitor refrigeration system opened and the connections to the evaporator unbrazed 1 Remove the unit from its installed position 1 Remove the unit from its installed position 2 Disconne
39. s if the current draw in the sixty seconds following the restart is below the preset limit If within the sixty seconds after the restart the current again exceeds the limit the controller again shuts the machine down and a second strike is recorded and four minutes later a second restart occurs If the current is again excessive the third time the unit will stop restarting and the lights will flash on and off every two seconds Auger motor low current If the controller senses the auger motor is not drawing any or minimal current it will shut the compressor and auger motor down for twenty minutes before attempting a restart The twenty minutes are intended as time for the auger motor to cool off if it has shut down on its internal overload The controller records that as a strike If in the next sixty seconds the auger motor begins to draw current the strike is erased and normal operation resumes If the current is still low a second strike is recorded and the unit will wait another twenty minutes before attempting a third restart If the third restart is normal the strikes are erased and normal operation is continued If the unit fails again the unit will stop restarting and the lights will flash twice on and off every two seconds Controller Failure If all lights are flashing once every 10 seconds the controller has identified an internal failure and must be replaced May 2011 Page 8 SCN60 Service Service Diagnosis
40. stripped replace gear reducer Unit off on auger motor open safety Check connections to auger motor if voltage to motor and it does not operate replace motor Unit plugged in but no power If pump model check for water back up or open safety switch Check transformer replace if not supplying 12 volts AC to controller Check switch membrane See component diagnostics If transformer and membrane are good replace controller May 2011 Page 9 SCN60 Service Service Diagnosis Problem Likely Cause Probable Solution No ice continued Ice level sensor failure With power on and Ice Making light on check connector if secure remove connector and jump the two middle pins at J9 on the controller together Unit should start If it does replace the sensor if not replace the controller Auger motor on but compressor and fan motor are off Restart unit Check for power to compressor and or fan motor If none replace controller Ice Making light blinking Condition is temporary unit has been switched off Ice making light on nothing operating May be in a restart window See page 7 Not keeping up makes ice but less than normal Dirty condenser Vacuum condenser fins Air flow blocked Check for vent blockage Gravity drain restricted Check drain clear of restriction Ensure it has a proper air vent Pump drain slo
41. t 4 Remove two screws at the top and lift the upper bracket out of the cabinet Replace with the one supplied loose with the machine a Remove Screws f Fasten it to the cabinet using the original screws 5 Return the top panel to the cabinet and fasten it with the original screws 6 Remove kickplate and front service panel i I ill Screw Below 7 Remove two front screws and two bottom screws holding the bottom door bracket to the cabinet 8 Replace the bracket with the one supplied loose with the machine Secure it using the original screws 9 Remove the upper hinge and move it to the door s opposite side bottom location Secure using the original screws Note If door panel is attached it must be removed to access hinge screws 10 Remove the original lower hinge and move it to the door s opposite side upper location Secure using the original screws 11 Install a screw removed in step 2 in outermost hole of upper and lower cross braces 12 Attach the door to the cabinet using the original screws 13 Return kickplate and front service panel to their original positions and attach to the cabinet using the original screws May 2011 Page 8 SCN60 Installation and Use Plumbing Pump Model Drains There are two types of ice machine mod
42. the control turns the ice making system back on It makes ice until the preset level is reached Placing your hand in the unit to remove ice does not affect the ice level May 2011 Page 11 SCN60 Installation and Use Use No special instructions are needed for use Just take as much ice as you need the machine will replace it A scoop is provided and it can be stored in the machine using the loop of tubing on the right side as a holder The machine can be shut off anytime by just pushing and releasing the On Off button What shouldn t be done Never keep anything in the ice storage bin that is not ice Objects like wine or beer bottles are not only unsanitary but the labels can slip off and plug up the drain Never allow the machine to operate without regular cleaning The machine will last longer if it is kept clean Regular cleaning should happen at least once per year and preferably twice Some water conditions will dictate even more frequent cleaning of the ice making section and some carpets or pets will dictate more frequent cleaning of the condenser Note The Time to Clean light will switch ON after 6 months of use It will remain ON until the ice making system is cleaned using the process on page 14 Noise The ice machine is designed for quiet operation but will make some noise during the ice making cycle Ice Making During ice making nugget ice will drop into the bin at an irregular rate so
43. to lock in the new setting Quick reset of time to clean light Press and hold the Clean Reset button for 3 seconds May 2011 Page 7 SCN60 Service Electrical Sequence Upon power being supplied all the lights will blink once and the control system will immediately check for water in the reservoir If there is water no further action will occur until the On Off button is pushed Pushing the On Off button starts the machine The Ice Making light will switch on The auger motor compressor and fan will begin to operate Those three components will continue to operate until the Ice Level Control detects that ice has built up to the pre set level At that point the control system will begin a shut down process by shutting off the compressor and fan motor After sixty seconds the auger motor will shut off The purpose of this is to remove any ice from the evaporator so the auger motor can restart with minimal load The machine will restart after the ice level has fallen one inch or more Other Control Functions To Shut Off Push and release the On Off button If the machine was off because the bin was full the unit will be switched to Off immediately If the unit was making ice the compressor and fan motor will shut off immediately and the auger motor shut off in sixty seconds To shut the unit off immediately while making ice push and HOLD the On Off button until it shuts off To Clean See Maintenance section for ste
44. ton LAA qn Tab 3 Open door and locate screws at upper back wall of bin Remove the two screws Screws 4 Remove the back wall of the bin by lowering it down past the scoop holder feel free to rotate the scoop holder loop down to make more room an f 5 Push tab on front edge of reservoir cover and remove the cover Note Adjacent wires are low voltage and are not hazardous Lift Reservoir Cover to Remove May 2011 Page 14 SCN60 Installation and Use 6 Locate blue float valve on off lever Move lever up about half way to shut water off 7 Locate drain plug and pull the drain plug out to drain the reservoir and evaporator When draining is complete return the plug to its original position a Check Water RE 8 Obtain pre mixed Scotsman Clear 1 Scale remover solution with squirt bottle or mix a solution of Clear 1 with water 2 5 ounces of Clear 1 with 1 quart 32 oz of warm water AWARNING SS Ice
45. w Check for proper pump switch operation and drainage Scale on evaporator and auger Clean with scale remover See Maintenance section Torn door gasket door does not close tightly Check gasket and door fit Makes ice but also an unusual noise Panels vibrating Check panels adjust fit tighten screws Fan blade rubbing Check fan blade for foreign object Remove same Check alignment Scale on evaporator and auger Clean with scale remover See Maintenance section Drain pump cuts in and out Check valve failure replace Tubes rubbing Check for tube contact to panel or another tube Unit in very cold conditions Do not operate unit below limits Water Leak Drain tube off or cracked Check repair drain tube Water inlet connection loose Check tighten connection Water flows continuously Float valve not shutting off Check float if stuck free it If leaking by when full replace the valve May 2011 Page 10 SCN60 Service Component Diagnostics Membrane Switch Unplug and check connector pins left side is pin 1 read about 10 ohms when activating the button and OL when not pressing the button Pin 2 3 On Off Switch 4 3 Clean Reset Switch Compressor Check temperature of compressor if very hot add access valves to refrigeration system and check system pressures If very low add very small amount of R 134a If p
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