CME865W & CME1002W INTRODUCTION This manual is intended as a reference for the installation of a Scotsman ice maker models CME865 and CME1002. Table of Contents INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 PRODUCT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 UTILITY CONNECTION LOCATIONS . . . . . . . . . . . . . . . . . . . . .
CME865W & CME1002W SPECIFICATIONS Before beginning installation, be sure that all of the components necessary for complete assembly of the ice system are available, and are the correct components with regard to model, voltage, and finish. A stacking kit (KSCMS) is required for stacking CME1002 or CME865 ice machines. It interconnects the sonar bin ice level controls. A CME865 or CME1002 may only be stacked onto models CME865, CME1002, MCM1062 or CMS1002.
CME865W & CME1002W PRODUCT INFORMATION Always refer to the nameplate, located on the back of the cabinet, for the: • model number, • serial number, • basic electrical requirements, • minimum circuit ampacity, • maximum fuse size, • and refrigerant charge. A serial number plate with the model number, serial number and refrigerant charge is located behind the front panel, near the control box. The unit comes from the factory with the correct refrigerant charge.
CME865W & CME1002W UTILITY CONNECTION LOCATIONS December, 1994 Page 4
CME865W & CME1002W FOR THE INSTALLER: Environmental Limitations Installation Limitations Water Limitations The ice making portion of this ice system is designed to be installed indoors, in a controlled environment. An ice machine is a food manufacturing plant; it takes a raw material, water, and turns it into a food product, ice. The purity of the water is very important in obtaining pure ice and in maximizing product life.
CME865W & CME1002W FOR THE INSTALLER: Machine & Bin Assembly Overview: Ice Maker: This ice system is comprised of 2 major assemblies: 1. Arrange for proper electric, water and drain. See instructions for the plumber and for the electrician. 1. The ice storage bin. 2. The ice maker itself. 2. Position the ice storage bin in the selected INDOOR location. Storage Bin: 3. Level the bin, in both the front to rear and side to side directions.
CME865W & CME1002W FOR THE PLUMBER Water Supply Drain Connections: The recommended water supply line is a 3/8-inch O.D. tubing with a minimum operating pressure of 20 PSIG and a maximum of 80 PSIG. Connections: All drains are gravity type and must have a minimum of 1/4 - inch fall per foot of horizontal run. The drains to be installed must conform with the local plumbing codes. Install a vertical open vent on the ice machine reservoir drain. The ideal drain receptacle is a trapped and vented floor drain.
CME865W & CME1002W FOR THE ELECTRICIAN: Electrical Connections See the NAMEPLATE for current requirements to determine wire size to be used for electrical hookup. The cuber requires a solid chassis to chassis earth ground wire. See Wiring Diagram. Be certain the cuber is connected to its own electrical circuit and individually fused. Voltage variation should not exceed ten percent of the nameplate rating, even under starting conditions.
CME865W & CME1002W FOR THE INSTALLER: Final Check List 1. Is the ice maker cabinet in a room where ambient temperatures are within the minimum and maximum temperatures specified? 2. Is there clearance at both sides of the cabinet and at the back and top for service and utility connections? 3. Has water supply pressure been checked to insure a minimum of 20 PSIG and a maximum of 80 PSIG operating pressure? 4. Is the cabinet level? 5. Check that any shipping material has been removed from inside the cabinet.
CME865W & CME1002W INITIAL START UP Ice Maker: 1. Remove front panel. 2. Remove two screws and the control box cover. 3. Remove the evaporator cover. 4. Remove the left side service panel. 5. Check that the ON/WASH/OFF rocker switch and the Compressor ON-OFF toggle switch are in the OFF position, on the control box. 6. OPEN the water supply line shut off valve. 7. Inside the control box is the shaft of the timer and the switch assembly.
CME865W & CME1002W INITIAL START UP Adjust for the correct size if needed: CUBES (ACTUAL SIZE) To produce SMALLER sized ice cubes: Locate cube size control knob, in the front of the control box. Rotate this knob one eighth of a turn counter clockwise. Observe size of the ice cubes in the next ice cube harvest and adjust again if needed, until the correct ice cube is achieved. TOO THICK To produce LARGER ice cubes: Locate cube size control on the front of the control box.
CME865W & CME1002W ADJUSTMENT OF THE TIMER & SWITCH ASSEMBLY One complete revolution of the cam on the timer represents eight minutes. The first part of the cam rotation is the end of the freezing cycle, and the final few minutes is the defrost/harvest cycle. Rotating the shaft of the timer cam Clockwise will put the ice machine into the freeze or harvest cycle, as required in the cleaning instructions.
CME865W & CME1002W COMPONENT DESCRIPTION Compressor Contactor Hot Gas Solenoid Valve The compressor contactor carries the compressor line current. The contactor is wired so any control in the pilot circuit, such as the bin control, and high pressure controls, etc., will cause the contactor holding coil to be de energized, when the control contact OPENS, thereby breaking the circuit to the compressor. The hot gas solenoid valve opens only during the harvest cycle.
CME865W & CME1002W COMPONENT DESCRIPTION Ice Level Control This electronic control uses sound waves to measure the distance between the bottom of the ice machine and the top of the ice in the bin. It is designed to control the machine’s ice production to maintain that distance. The control is adjustable so that the ice machine will maintain a certain height of ice. It will not fill any closer to the ice machine than 8", and will not work if the distance to the bottom of the bin is greater than 8 feet.
CME865W & CME1002W COMPONENT DESCRIPTION Electric Water Inlet Valve Reservoir The water inlet solenoid valve fills the reservoir assembly with water. Excess water overflows out the overflow standpipe located at the back of the reservoir. This action fills and rinses the reservoir during each harvest cycle. The flow rate is .75 g.p.m. The reservoir, located below the evaporators, stores the inlet water charge, and collects the water that flows over the evaporator plates.
CME865W & CME1002W SERVICE SPECIFICATIONS: CME865W The following numbers may be used as a guideline. There will be some variation from unit to unit. Numbers = (Cabinet/Water). Typical Cycle Time 70/50 14 - 15 minutes 90/70 16 - 17 minutes 2.5 minutes 110/100 23 - 24 minutes 2 minutes 28 PSIG 29 PSIG 29 PSIG 245 PSIG 245 PSIG 245 PSIG 90 PSIG 100 PSIG 144 PSIG 180 PSIG 190 PSIG 215 PSIG Harvest Time (2 2⁄3 min.
CME865W & CME1002W SERVICE SPECIFICATIONS: CME1002W The following numbers may be used as a guideline. There will be some variation from unit to unit. Numbers = (Cabinet/Water). Typical Cycle Time 70/50 13-14 minutes 90/70 15 - 16 minutes 2 minutes 110/100 21 - 22 minutes 2 minutes 24 PSIG 24 PSIG 27 PSIG 245 PSIG 245 PSIG 245 PSIG 86 PSIG 94 PSIG 138 PSIG 175 PSIG 190 PSIG 220 PSIG Harvest Time (2 2⁄3 min.
CME865W & CME1002W CLEANING A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. Maintenance and Cleaning should be scheduled at a minimum of twice per year. CLEANING: ICE MAKER 14. Check the next batch of cubes to make sure all of the acid taste is gone. 1. Remove front panel. CAUTION 2. Switch the Wash/Off/Ice switch to OFF. 3. Remove the front liner. 4.
CME865W & CME1002W CLEANING taking care to wipe all surfaces that are normally in contact with ice. SANITIZE WATER SYSTEM 1. Remove and discard all ice from the bin. 10. Replace the evaporator cover. Replace the front panel. 2. Remove front panel. 3. Drain the reservoir 11. Move the master switch to ON. 4.
CME865W & CME1002W SERVICE DIAGNOSIS SYMPTOM No ice, machine does not run POSSIBLE CAUSE 1. No electrical power 2. Circuit breaker tripped or fuse blown 3. High pressure control open. 4. ice level control holding machine off 5. High temp. cut out open 6. Timer switch open 7. Master switch open 8. Circuit board open 1. Open contactor coil No ice, compressor does not run, rest of ice machine does. No ice, no water over evaporators 1. Water pump does not pump 2.
CME865W & CME1002W SERVICE DIAGNOSIS SYMPTOM Low ice production POSSIBLE CAUSE 4. High head pressure, a result of a dirty condenser 5. Hot gas valve leaks thru 6. High discharge pressure No ice falling in bin, unit frozen up 1. Cube size control will not close 2. Timer motor open 3. Plug in relay contacts open 4. Not enough time during the harvest cycle to drop all ice 5. Cube size wrong 6. Hot gas valve restricted. 7. Not enough water to help harvest. 8.
CME865W & CME1002W SERVICE DIAGNOSIS: Ice Level Control Circuit CONDITION DETERMINE CAUSE A. Listen for a ticking sound from Ice Machine does not run, it has transducer. power to it, the high pressure control is closed, the on/off switch is set to ON. B. Open bin door and twist transducer 1/4 turn and pull out. DO NOT UNPLUG with power connected. Examine the transducer, the inside must be clean and dry. C. Check power to bin level control board. D.
CME865W & CME1002W REMOVAL AND REPLACEMENT TRANSDUCER 1. Disconnect electrical power BEFORE removing transducer. 5. Unplug transducer and remove from the machine. 2. Open bin door and locate the transducer socket. 6. Reverse steps 1-5 to reassemble. 3. Twist inner portion of transducer counterclockwise and push up gently. 4. Pull transducer down until plug connection is accessible.
CME865W & CME1002W REMOVAL AND REPLACEMENT Inlet Water Solenoid Valve Assembly Disconnect electrical power supply to icemaker before beginning. To remove the inlet water solenoid valve assembly: 1. Shut OFF water supply to machine. Cube Size Control ELECTRICAL CONNECTION To remove the cube size control: 1. Remove front panel. SOLENOID VALVE 2. Remove cover from control box. 3. Trace capillary tube, from the cube size control to the refrigerant suction line. 4.
CME865W & CME1002W REMOVAL AND REPLACEMENT Disconnect electrical power supply to icemaker before beginning. Hot Gas Valve 1. Remove the side service panel, and top panel if possible. 2. Discharge and recover the refrigerant from the system. Water Pump 3. Remove the electrical connections from the coil of the valve 1. Remove front panel. 2. Remove evaporator cover. 4. Cut out or unsweat the valve at the tubing connections, remove the valve from the icemaker. 3. Unplug water pump electrical connection.
CME865W & CME1002W REFRIGERATION SERVICE This ice machine uses R-404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system. • R-404A is a "Near Azeotrope" so liquid charging is required: See the Pressure-Temperature Chart for R-404A VAPOR TEMP. PRES. TEMP. next page. • When the system is serviced, a special liquid line drier is required. It is (DEG F) (PSIG) DEG F) included with replacement compressors.
CME865W & CME1002W LIQUID CHARGING Instructions for R-404A In preparation for charging, the low side hose should have a sight glass, and/or a restrictor device (such as a "Charge Faster") installed in it for metering liquid into the low side of the system. 1. After a thorough evacuation to at least 200 microns, shut off the manifold valves and switch off the vacuum pump. 2. Place a drum of R-404A onto an electronic scale. 3. Attach the charging hose to the drum. 4.
