Scotsman SCN60 manual

Introduction This manual includes information for the installation, operation and maintenance of the SCN60 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 foll[...]

Product Description: This ice machine is designed to be used indoors, in a controlled environment or outdoors within certain limits. The SCN60 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 i[...]

Cabinet Dimensions May 2011 Page 3 SCN60 Installation and Use 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 w[...]

Location Recommendations: The machine can be built 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. There are two models, one is a gravity drain type and it must have a building drain connection b[...]

Familiarization The control panel is visible when the door is opened. It has three indicator lights and two switches. The model and serial number plate is located on the bottom of the control panel box. The Bin Light and Ice Level Sensor are also visible from that angle, as is the Ice Chute. The Scoop Holder is located on the right side of the ice [...]

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[...]

Door Panel Attachment May 2011 Page 7 SCN60 Installation and Use Gasket Scotsman Door Panel Cover Machine Screw Use Upper Hole at the Top Use Lower Hole at the Bottom Hole Plug[...]

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[...]

Plumbing - Pump Model Drains There are two types of ice machine models, 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.[...]

Plumbing: Gravity Drain Model Caution: Restrictions in the drain system to the machine 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[...]

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 install[...]

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 any[...]

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 lengt[...]

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, re[...]

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. 8. Obtain pre-mixed Scotsman Clear 1 Scale remover solution (with squirt bottle) or mix a solution of Cl[...]

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 c[...]

SCN60 service This section contains information for the service and repair of the SCN60 ice machine. May 2011 Page 1 SCN60 Service Service Table of Contents SCN60 service .............................................. Page 1 Components: ............................................... Page 2 Evaporator and Auger .....................................[...]

Components: • Refrigeration system, including air cooled condenser, compressor, capillary tube and evaporator. • Control system, including ice level sensor, water sensor, auger motor sensor, controller, control pad and transformer. • Auger drive system, including auger motor, gear reducer and auger. • Auger support system, including top bea[...]

Evaporator and Auger May 2011 Page 3 SCN60 Service Cut Away View Stationary Half of Water Seal Rotating Half of Water Seal Heat Exchange Tube Coil Auger Ice Outlet Bearing Foam Insulation Water Inlet[...]

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 c[...]

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[...]

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. May 2011 Page 6 SCN60 Service Ice Making Check Wat e r Time to Clean Clean Reset[...]

Performance and Technical Specs Overall: • Refrigerant: 4.5 oz R-134a • Compressor: Hermetic, 700 BTUH • Condenser: Forced draft • Fan blade: 3 blade, 6 inch • Evaporator: Stainless steel tube, copper coil jacketed • Metering device: Cap tube • Auger drive: output speed 11 RPM • Water valve: Float in reservoir • Drain pump: Magnet[...]

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 f[...]

Service Diagnosis May 2011 Page 9 SCN60 Service 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 val[...]

Service Diagnosis August 2011 Page 10 SCN60 Service Problem Likely Cause Probable Solution No ice, continued Ice level sensor failure With power on and Ice Making light on, check connector, if secure jump the two middle pins at J2 (bin stat) on the controller together. Unit should start. If it does, replace the sensor, if not, replace the controlle[...]

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. I[...]

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 the top of the front of the bin. When the ice le[...]

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: • Fan motor – side service panel • Controller – top panel • Auger motor – top panel, back panel • Ice sensor – t[...]

May 2011 Page 14 SCN60 Service SCN60 Gearbox Access & Removal 1. Shut off water supply 2. Remove drain plug inside bin compartment 3. Disconnect power supply or unplug unit 4. Uninstall unit and pull out as needed for top and back access. 5. Remove top panel 6. Remove back panel 7. Remove ice chute/bin wall by unscrewing 2 thumb screws and lift[...]

15. Remove breaker & set aside 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. 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 compartme[...]

Water Seal Replacement 1 Go through the prior steps to remove the gear reducer. 2 Remove rotating half of water seal from bottom of auger. 3 Clean auger of any sealant at water seal mounting position. 4 Add a small bead of food grade silicone sealant to the shoulder of the auger where the water seal will go. Note: Do NOT touch the mating surfaces o[...]

13 Slide breaker onto auger shaft. Secure with the original four allen head bolts. 14 Reverse the balance of the steps to complete 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[...]

Evaporator Replacement 1 Go through all steps to remove the gear reducer. 2 Add temporary refrigeration system access valves to the discharge and suction sides of the refrigeration system . 3 Recover the refrigerant. 4 Un-sweat the suction line and cap tube connections from the evaporator. 5 Remove original dryer. 6 Attach permanent access valves t[...]

Drain Pump (if equipped) 1 Shut off water supply 2 Remove all ice and/or any standing water. 3 Disconnect power or unplug unit 4 Uninstall and pull unit out to get access to left side service panel. 5 Remove five screws and the service panel. 6 Disconnect electrical plug to pump motor 7 Disconnect drain hose from pump inlet 8 Disconnect discharge h[...]

Compressor replacement. 1 Shut off water supply 2 Disconnect power supply or unplug unit 3 Uninstall unit and pull out as needed for side and back access. 4 Remove back panel including drain and power supply panels. 5 Remove side service panel. 6 Go through all steps to remove drain pump and/or fan motor. 7 Remove drain hose from unit. 8 Add tempor[...]

Bin and Cabinet The bin and cabinet can be separated from the base. Either the ice making evaporator system must be lifted out and securely suspended or the refrigeration system opened and the connections to the evaporator unbrazed . 1 Remove the unit from its installed position. 2 Disconnect water supply. 3 Disconnect / unplug unit from power supp[...]