CME650R INTRODUCTION To the owner or user: This service manual is intended to provide you and the maintenance or service technician with the information needed to install, start up, clean, maintain and service this ice system. The CME650R uses HP62 as the refrigerant, and polyolester oil for compressor lubrication. Table of Contents INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 FOR THE INSTALLER: Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 FOR THE INSTALLER: Coupling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 FINAL CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 COMPONENT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 COMPONENT DESCRIPTION: FREEZING CYCLE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 HARVEST CYCLE - HOT GAS BYPASS CLEANING & SANITIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 SYSTEM SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 SERVICE DIAGNOSIS: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 SERVICE DIAGNOSIS: Electrical and/or Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 SERVICE DIAGNOSIS: Refrigeration and/or Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 REFRIGERATION SERVICE: HP62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. Keep this manual for future reference. This manual was printed on recycled paper. October 1994 Page 1 CME650R FOR THE INSTALLER The CME650R will fit the following Scotsman ice storage bins: A remote condenser and precharged tubing kit are required to assemble this ice system. The normal finish for the machine is enamel. An optional stainless steel panel kit (SPKCMD-1) can be field installed. It contains a stainless steel top, side panels, service panels, and front panel. · *BH550 · *HTB500, HTB350, HTB250 · BH800 (with bin top KBT23) · BH900 (with bin top KTB22) · BH1360 It will also fit these Scotsman Dispensers: · CD200 · IS150 (with adapter kit KADCM1) · RS150 (with adapter kit KADCM1) *These smaller bins are recommended. Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of U.L., N.S.F., and C.S.A. 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. Model Number Dimensions Basic (without bin) Electrical W" x D" x H" CME650RE-32A 30 X 24 X 27 208-230/60/1 Minimum Circuit Ampacity* 16.9 Maximum Fuse (or HACR Circuit Breakers) Size 20 Refrigerant Condenser Charge** Type HP62 (R-404a) 208 oz. Remote Air CME650RE-3A 30 X 24 X 27 208-230/60/3 5.9 15 208 oz Remote Air * Minimum Circuit Ampacity is used to determine wire size and type per the National Electric Code. ** The unit is shipped with the full charge in the receiver. For re-charging purposes, if the nameplate charge is different than this number, go by the nameplate. Use Scotsman remote condenser RCE651-32A, RCE652-32A or ERC201-32A or ERC402-32A. Use precharged tubing kit RTE25 (25') or RTE40 (40"). Fan relay kit KCMR230 required when two ice machines are powering 1 remote condenser. This ice system (except remote condenser) is designed to be installed indoors, in a controlled environment. Air Temperature Water Temperature Water Pressure Voltage MINIMUM 500F. 400F. 20 psi -10% December 1995 Page 2 MAXIMUM 1000F. 1000F. 80 psi +10% CME650R Installation Water The water supply for this ice machine has been in contact with many materials since it fell from the sky as rain. All rain is slightly acidic, and tends to dissolve the materials it comes in contact with. During water's journey to the ice machine, it has flowed over and through the ground, been picked up by a municipal or private pump, forced through a series of pipes of differing construction and may have been treated by the municipality providing the water. The water supplied to this ice machine will then contain a variety of substances that will likely show up as solids during the ice making process. These solids are similar to those found when water is boiled out of a saucepan. Only the water boils away, and the minerals that were in the water solidify in the pan. During ice making only the water is frozen into ice, the minerals stay behind in the reservoir. This machine dilutes the water in the reservoir every cycle to minimize the amount of minerals in the water system, but after time the minerals will appear and have to be dissolved by ice machine cleaner, then flushed away during the cleaning process. An ice machine is a food manufacturing plant; it takes a raw material, in this case water, and transforms it into a food product, ice. The purity of the water is very important in obtaining pure ice and in maximizing product life. The water to the ice machine should be filtered. Water filters vary greatly in ability and function. Install one that filters out suspended solids to a dimension of 5 microns or less. The finer the filter the better, but finer filters may plug-up sooner than course ones. It may be necessary to add a course filter ahead of the fine filter to prolong filter life. Space is required for service access at the sides and utility connections at the back. 6 inch clearance is recommended. The ice machine is not designed for outdoor use. It must be installed indoors, in a controlled environment. The air and water temperatures must not exceed rated limits. Pre-installation: 1. Inspect the place where the ice machine is to be installed. Check for: · space for the cabinet, · water supply, · drain availability · and electrical power supply. No extension cords are allowed. The building drain inlet must be lower than the drain outlet of the ice bin. The water supply must have a hand shut off valve accessible when the unit is installed. Even though there isn't one filter that will cure all water problems, a good filter combined with a polyphosphate feeder gives about the best overall performance. Have the water tested. Acidic water or alkaline water will both cause corrosion. Dissolved solids cannot be filtered out. Check with a water treatment specialist regarding testing, treatment and filters. October 1994 Page 3 CME650R Installation Assembly: 1. Attach the legs, or optional casters, onto the ice storage bin. Units that are stacked should only use legs, not casters. 2. Place the ice machine onto the storage bin. 3. Line up the ice machine, check that there is a good seal between the ice machine and the storage bin. 4. If on a Scotsman bin, attach the ice machine to the bin using the straps and bolts shipped with the ice machine. If on another brand bin, follow the directions included with that bin. Bin Thermostat Installation: 1. Remove rubber cap from the end of the thermostat bracket. 2. Attach the bin thermostat bracket to the bottom of the ice machine using the thumb screws provided. There are pre-drilled and tapped holes located just behind the cube drop area. The end of the bin thermostat bracket with the plastic tubing on it will fit into the hole in the base of the machine. 3. Locate and uncoil a portion of the bin thermostat capillary tube. Route the end of the capillary tube into and through the bin thermostat bracket tube. It should be inserted the full length of the tube, but not past the end. Stacking: This machine will stack onto any CM250, CME250, CM450, CM500, CME500, CM650 or CME650 with the same cabinet depth (24"). 1. Remove and discard the top panel from the lower unit. 2. Carefully lift the uncrated top unit onto the bottom unit. Use of a mechanical lift is recommended for this step. 3. Align the two ice maker cabinets. 4. Secure the top unit to the bottom one with the hardware and straps shipped with the upper machine. 5. Locate and uncoil all of the bin thermostat capillary tube. 6. Route the bin thermostat capillary tube from the upper unit, through the hole in the back of the reservoir, through the lower unit and into the bin thermostat bracket. Discard upper unit bracket. Reservoir Bin Thermostat Bracket Capillary Tube Strap Routing Hole Bin Thermostat Installation Thermostat Capillary Tube Bin Thermostat Bracket Stacking March 1994 Page 4 CME650R FOR THE INSTALLER: Remote Condenser Locate the condenser as near as possible to the interior location of the ice maker. Location of the condenser is limited by the specific length of precharged refrigerant tubing supplied for the application. The pre-charged tubing connects the icemaker to the remote condenser. The condenser must be above the ice maker. Select the best available location, protecting the condenser from extremes of dirt, dust, and sun. Meet all applicable building codes. Roof Attachment: Install and attach the remote condenser unit to the roof of the building, using the methods and practices of construction that conform to the local building codes, including having a roofing contractor secure the condenser to the roof. Precharged Line Routing ///////////////////////////////CAUTION///////////////////////////////// Do not connect precharged tubing until all routing and forming of the tubing is complete. See the coupling instructions for connecting instructions. //////////////////////////////////////////////////////////////////////////////// 1. Each set of precharged refrigerant lines consists of a 3/8 inch diameter liquid line, and a 1/2 inch diameter discharge line. Both ends of each line have quick connect couplings, the end without access valves goes to the icemaker. Note: The openings in the building ceiling or wall, listed in the next step, are the minimum sizes recommended for passing the refrigerant lines through. 2. Have the roofing contractor cut a minimum hole for the refrigerant lines of 1.75". Check local codes, a separate hole may be required for the electrical power to the condenser. ///////////////////////////////CAUTION////////////////////////////////// DO NOT KINK OR CRIMP REFRIGERANT TUBING WHEN INSTALLING IT. //////////////////////////////////////////////////////////////////////////////// 3. Route the refrigerant lines through the roof opening. Follow straight line routing whenever possible. Any excess tubing MUST be retained within the building. Excess Tubing Inside Building Locate Condenser No Lower Than Ice Machine Remote Condenser 4. Spiral any excess length of pre charged tubing inside the building. Use a horizontal spiral (as illustrated) to avoid any traps in the lines. Note: Spiral need not be as tight as illustrated. 5. Have the roofing contractor seal the holes in the roof per local codes. TYPICAL INSTALLATION October 1994 Page 5 CME650R FOR THE INSTALLER: Coupling Instructions ////////////////////////////////CAUTION///////////////////////////////// The couplings on the sets of precharged lines are self sealing when installed properly. Carefully follow the instructions: //////////////////////////////////////////////////////////////////////////////// Initial Connections: 1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to be certain that no foreign matter remains on them. 2. Lubricate the inside of the couplings, especially the O-Rings with refrigerant oil. · The 1/2 inch discharge line (schrader valve end) goes to the remote condenser fitting marked "discharge line". · The 3/8 inch liquid line (schrader valve end) goes to the remote condenser fitting marked ...