Service Manual for Residential Ice Machine Models SCCG50 and SCCP50
SCCG50 & SCCP50 Service Manual Introduction: This ice machine is the result of Scotsman’s decades of experience as an industry leader in the design and manufacture of both commercial and residential ice machines. This manual includes the information needed to install, start up and maintain the ice machine. Note any Caution or Warning indicators, as they provide notice of potential hazards. Keep this manual for future reference. Table of Contents Specifications . . . . . . . . . . . . . . .
SCCG50 & SCCP50 Service Manual Specifications This ice machine is designed to be used indoors, in a controlled environment. It can be used in a wide variety of environmental conditions, but there are limits. Use outside of the listed limitations is misuse and will void the warranty. Air temperature limits: The ice machine will operate adequately within the limits, but functions best in temperatures between 70 and 80 degrees F. • Minimum – 50 degrees F. (10°C) • Maximum – 100 degrees F.
SCCG50 & SCCP50 Service Manual Cabinet Layout FLOOR DRAIN ACCESS HOLE 3 7/8" 20 3/8" 22" .75 SHEET METAL DOOR FRONT .63 MIN. CABINET DOOR 14 7/8" 29 1/4" 33 3/8" MIN. 34 3/8" MAX. DRAIN FLEXIBLE TUBING 3/8 I.D. PUMP MODEL (INCLUDED) 5/8 I.D.
SCCG50 & SCCP50 Service Manual Air flow The machine takes in room temperature air at the lower right front and forces warm air out the lower left front. Restricting the airflow will adversely affect the ability of the ice machine to make ice. Control Panel Ice Making Area Warm Air Out Air Intake Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of agencies like U.L.
SCCG50 & SCCP50 Service Manual Water Quality All water, including potable water supplied by municipalities, contains some impurities or minerals. Water absorbs impurities from the air as rain and/or as it flows through the ground. Some of the impurities are solid particles, these are known as suspended solids, and a fine particle filter will remove them. Other impurities are chemically bonded to the water molecules, and cannot be filtered out, these are called dissolved solids.
SCCG50 & SCCP50 Service Manual Door Covering Door Panel Custom 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. 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.
SCCG50 & SCCP50 Service Manual Door Panel Attachment Use Upper Hole at the Top Scotsman Door Panel Gasket Machine Screw Hole Plug Use Lower Hole at the Bottom Cover June 2008 Page 7
SCCG50 & SCCP50 Service Manual 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. To create and attach a custom panel: 10. Mount panel to door using wood screws or supplied panel mounting screws. Note: When installed Ice machine must be adjusted for height to position top of door to desired clearance.
SCCG50 & SCCP50 Service Manual Door swing change Note: Prior models had separate hinge brackets and different directions to change swing. Moving the hinges allows the door to open from either the left or right side. Change swing before attaching door panel. To change: 1. Remove innermost screw holding each hinge to cabinet, loosen the other. 4. Remove hole plugs or screws from unit’s new hinge locations, set aside. 5. Move screws loosened in step 1 to opposite location. 6.
SCCG50 & SCCP50 Service Manual Installation: Water & Drain Water Supply, all models: The recommended water supply tubing is ¼ inch OD copper. Stainless steel flex or reinforced PVC 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. Note: Do not use self-piercing type valves. 1. Remove the front service panel. Water Inlet Connection, located at the FRONT of the machine.
SCCG50 & SCCP50 Service Manual Gravity Drain 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. Adjust leveling legs to the approximate height. 2. Remove the front service access panel and the upper back panel.
SCCG50 & SCCP50 Service Manual Electrical 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. Installation check list: 1. Has the unit been connected to the proper water supply? 2. Has the water supply be checked for leaks? 3. Has the unit been connected to a drain? 2.
SCCG50 & SCCP50 Service Manual Cube Size Adjustment Side Views of Cubes The cube size can be adjusted by changing the amount of freeze cycle time. This is done by a button press sequence. Note: There is only one correct cube size. See the illustrations. To adjust cube size: 1. Shut the machine off: If it’s off on bin full press and release the On/Off button once, switching the Ice Making light off. If the machine is making ice hold the On/Off button in until the Ice Making light is off.
SCCG50 & SCCP50 Service Manual Harvest Time Adjustment The harvest time can be adjusted so that all the ice harvests during the cycle, plus a few seconds extra. This is done by a button press sequence. Note: Do not set harvest time shorter than the actual time it takes to release all the cubes. To adjust Harvest Time: 1. Shut the machine off by holding the On/Off button in until it shuts off (Ice Making light off). 2.
SCCG50 & SCCP50 Service Manual Control Settings Automatic water purge enable / disable The control is set at the factory to automatically select the proper amount of water purge. If desired, that can be disabled, and a typical purge amount used. To disable Automatic purge selection: 1. Press and hold the On/Off button until the unit shuts off. No lights should be on. 2. Press and hold the ON button for 5 seconds, then release. 3. Wait between 5 and 20 seconds, then repeat step 1.
SCCG50 & SCCP50 Service Manual 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. The machine will shut off at the end of the next cycle. To shut off immediately, push and hold the On/Off button in until the machine stops.
SCCG50 & SCCP50 Service Manual How to clean the condenser and winterize Condenser cleaning Winterizing 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. Clean the ice making system. 1. Remove the kickplate and front service panel. 2. Locate the condenser surface. 2. Open the door and push and release the On/Off switch to turn the machine off. 3. Turn off the water supply. 4.
How to remove scale from the ice making system SCCG50 & SCCP50 Service Manual 1. Scoop out all of the ice, either discard it or save it in an ice chest or cooler. 9. Pour a gallon of hot (95°F. – 115°F.) water into the bin to flush out the drain. 2. Press and HOLD the On/off button in for 3 seconds until the Green light goes out. 10. Clean the bin liner of mineral scale by mixing some ice machine scale remover and hot water, and using that solution to scrub the scale off of the liner. 11.
SCCG50 & SCCP50 Service Manual System Information A Model Electrical Sequence: Overall: • Refrigerant: 8 oz R-134a • Compressor: Hermetic, 1300 BTUH • Condenser: Forced draft • Fan blade: 5 blade, 7 inch • Evaporator: Inverted, 24 cube cells. Copper cups attached to continuous serpentine • Metering device: Cap tube • Defrost method: Hot gas bypass with water assist • Spray method: 6 water jets • Water charge: 40 ounces • Water valve: 115 volt solenoid, .
SCCG50 & SCCP50 Service Manual Water System The controller uses a Water Sensor to check for the presence of water in the reservoir and to measure the conductivity of the water. Evaporator The water sensor consists of two stainless steel probes located in a holder next to the water pump. The probes sense the conductivity of the water. The higher the mineral content of the water, the better it can conduct electricity. The control system is capable of sensing water as clean as 10 microSiemens/cm.
SCCG50 & SCCP50 Service Manual Components Model and Serial Tag Location Scoop and Thermostat Bracket Control Panel, Bin Light and Curtain Evaporator Platen Evaporator and Controller Inlet Water Solenoid Valve Condenser and Bin Thermostat June 2008 Page 21
SCCG50 & SCCP50 Service Manual Controller High Voltage Connector Evaporator Thermistor Bin Thermostat Comp Water Sensor Water Hot Gas Fan Power Power Supply Connector Control Panel Ribbon Control Safeties: The controller is located at the front of the unit, under the top panel. It is powered by a 12 volt transformer.
SCCG50 & SCCP50 Service Manual Performance Information for A and B Models Freeze Cycle, Minutes Water Temperature 100 90 80 70 60 50 100 37-38 36-37 34-35 32-33 31-32 29-30 90 36-37 35-36 33-34 31-32 30-31 28-29 80 36-35 32-33 30-31 28-29 27-28 26-27 70 32-33 28-29 27-28 25-26 23-24 22-23 60 27-28 25-26 24-25 22-23 20-21 19-20 50 20-21 19-20 18-19 17-18 16-17 15-16 40 18-19 17-18 16-17 15-16 15-16 15-16 Harvest Cycle, Seconds Water Temperature Air
SCCG50 & SCCP50 Service Manual Refrigeration System Suction Pressure 70 60 50 PSIG 40 30 20 10 0 -10 Time Discharge Pressure 150 140 130 120 PSIG 110 100 90 80 70 60 50 Time June 2008 Page 24
SCCG50 & SCCP50 Service Manual Thermistor Values Deg.
SCCG50 & SCCP50 Service Manual Service Diagnosis No Ice Problem Likely Cause Probable Solution No power to unit Power disconnected Check breaker or fuse.
SCCG50 & SCCP50 Service Manual Service Diagnosis Makes excessive noise Problem Likely Cause Probable Solution Blade is bent Replace fan blade Fan motor mount is broken Replace motor mount Compressor vibrates Mounting loose Check mounting Water pump vibrates Pump bearings worn Replace pump Panels vibrate Mounting screws loose Tighten screws Problem Likely Cause Probable Solution Ice wrong size Environment changed Adjust cube size Hot gas valve does not open Check voltage to coil when
SCCG50 & SCCP50 Service Manual Removal and Repair Bin Thermostat 9. Reverse to reassemble. 1. Disconnect electrical power. Curtain 1. Shut unit off. 2. Loosen both thumbscrews holding curtain bracket to freezing chamber. Electrical Shock Hazard. Disconnect electrical power before beginning removal 3. Pull out and remove curtain with bracket from ice machine. 4. Reverse to reassemble. 2. Remove service panel. Spray Platform 3. Remove back panel. 1. Remove curtain.
SCCG50 & SCCP50 Service Manual Removal and Repair Evaporator Thermistor 5. Remove screws holding transformer to controller box and pull transformer up and out of the ice machine. Note: If unit is built in it must be pulled out to change the evaporator thermistor. 6. Reverse to reassemble. Controller Note: If unit is built in it must be pulled out to change the controller. Electrical Shock Hazard. Disconnect electrical power before beginning removal 1. Disconnect electrical power. 2.
SCCG50 & SCCP50 Service Manual Removal and Repair - Cabinet Removal Certain components require the removal of the cabinet for repair access. 12. Remove curtain & hanger. 1. If the machine is in a freeze mode, perform a manual harvest. 2. Remove all ice. 3. Drain reservoir. 4. Remove service panel and kick plate. 5. Remove back panel. 13. Locate elbows where water flows onto the evaporator platen. 6. Disconnect electrical power. Clip Electrical Shock Hazard.
SCCG50 & SCCP50 Service Manual 16. Remove two screws holding freezing compartment brace to cabinet, lift brace up. 21. Lift bin assembly off the base. Note: Prop evaporator assembly up. A 3' length of 3/4" PVC tubing with one end inserted into the cup mold and the other against the base will hold it up. Brace The hot gas valve, fan motor, condenser and compressor are now exposed for service. 17. Lift evaporator platen up and tilt back enough for bin assembly to clear the base. Air Baffle 18.
SCCG50 & SCCP50 Service Manual Refrigeration Service Membrane Switch This ice machine use R-134a type refrigerant. There are specific rules for handling that refrigerant. To check for system pressures, add a field supplied clamp-on type service valve as a temporary means of system access. After diagnosis and before final repair, replace the clamp-on type valve with valves that are brazed onto the process tubes of the system.
