NME950R & FME1200R INTRODUCTION To the owner or user: The service manual you are reading 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 ice machines covered in this manual are a remote condenser type modular ice system that fits a variety of Scotsman storage bins. They feature: front service for the freezer, gear motor, control box, water reservoir, and bin control; an electronic circuit for monitoring ice and water level; a thermostatic expansion valve; and R-404A as the refrigerant. TABLE OF CONTENTS FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . REMOTE CONDENSER SPECIFICATIONS . . . . . . . . . . . . . FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . FOR THE INSTALLER: Remote Condenser . . . . . . . . . . . . . FOR THE INSTALLER: Precharged Lines . . . . . . . . . . . . . . FOR THE INSTALLER: Location . . . . . . . . . . . . . . . . . . . FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . FOR THE ELECTRICIAN: Fan Relay Kit . . . . . . . . . . . . . . . FOR THE ELECTRICIAN: Fan Relay Kit Phasing (Do After Start Up) FOR THE INSTALLER: Completed Installation . . . . . . . . . . . . FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . COMPONENT DESCRIPTION: Control Box . . . . . . . . . . . . . ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . OPERATION: Water . . . . . . . . . . . . . . . . . . . . . . . . . OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . SERVICE DIAGNOSIS: Condition - Low Ice Production . . . . . . . REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls . REMOVAL AND REPLACEMENT: Bearing And Breaker . . . . . . REMOVAL AND REPLACEMENT: Auger . . . . . . . . . . . . . . REMOVAL AND REPLACEMENT: Water Seal . . . . . . . . . . . . REFRIGERATION SYSTEM SERVICE . . . . . . . . . . . . . . . . REMOVAL AND REPLACEMENT: Evaporator . . . . . . . . . . . . REMOVAL AND REPLACEMENT: Gear motor Assembly . . . . . . CIRCUIT BOARD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 21 Page 24 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. This Manual Was Printed On Recycled Paper February 1995 Page 1 NME950R & FME1200R FOR THE INSTALLER Either the FME1200R or the NME950R is designed to fit the following Scotsman storage bins: · B90 and extensions, with bin top KBT18. · BH800 using bin top KBT15 (one unit). · BH800 if using two units, no bin top needed. · BH900 using bin top KBT24 (one unit) · BH900 with bin top KBT25 (two units side by side · BH550 or HTB500 using bin top KBT14. When installing a new system, check to be sure that you have everything you need before beginning: · Correct Bin · Correct Ice Machine · Correct Bin Top · All kits, legs, and information required for the specific job. Back View Allow 6" above machine for service. Liquid Line Connection Discharge Line Connection Remote Condenser Junction Box Electrical Inlet 20.84" Water Inlet 3/8" Flare 3" 5.25" 2.96" Drain 3/4" FPT SPECIFICATIONS: ICE MAKER Model Number Dimensions (w/o bin) HXWXD 27" x 21" x 24" same same same Basic Electrical 208-230/60/1 208-230/60/3 208-230/60/1 208-230/60/3 Ice Type Cond. Type R/Air R/Air R/Air R/Air FME1200RE-32A FME1200RE-3A NME950RE-32A NME950RE-3A FLAKE same Nugget same Refrigerant Charge* 208 ounces of R-404A * Always go by the nameplate charge. The Standard Finish is Enamel - Gray. There is an optional stainless steel panel kit, SPKFM21 available to convert the unit to Stainless Steel. It is field installed. December 1995 Page 2 NME950R & FME1200R REMOTE CONDENSER SPECIFICATIONS Model RCE501-32 ERC151-32 RCE502-32 ERC302-32 Use with 1 FME1200R OR 1 NME950R SAME 1 or 2 FME1200Rs or NME950Rs SAME ERC DIMENSIONS A B 3/ " 33 8 10 3/4" Basic Electrical 208-230/60/1 SAME SAME SAME F 16 3/4" G 11 5/8" 23 13/ " 16 19 7/8" Other Required Items: RTE25 Precharged line set, 25', R-404A or RTE40. Precharged line set, 40', R-404A. KCMR230. Fan Relay Kit used when two 230 volt (-32) ice makers are on one 230 volt (-32) two circuit condenser. ICE MAKER NAMEPLATE LOCATED ON BACK PANEL SERIAL PLATE LOCATED BEHIND FRONT PANEL December 1995 Page 3 NME950R & FME1200R FOR THE INSTALLER Installation Limitations: This ice system is designed to be installed indoors, in a controlled environment: Min Max Air Temperature 500F 1000F (Not including the remote condenser) Water Temperature 400F 1000F Water Pressure 20 PSIG 80 PSIG Voltage -5% +10% (Compared to the nameplate) Operating the machine outside of the limitations is misuse and can void the warranty. Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of UL, NSF, and CUL. 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 part 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 design are subject to change without notice. Location After uncrating and inspection, the unit is ready for installation. It is important that the machine be installed in a location where it has enough space around it to be accessible for service, usually a minimum of 6 inches. Try to avoid hot, dirty and crowded locations. Be sure that the location for the machine is within the limitations described on page 3. Storage Bin Tip the storage bin on its back, using parts of the carton to protect the exterior finish. Install the legs into the threaded holes in the bottom of the bin. Turn the leg levelers all the way in preparation for leveling later. Return the bin to the upright position, remove paper covering the bin gasket. Install the bin top according to the directions with the bin top. Note: Do not push bin into position, but lift it there. Pushing a bin, especially one with ice in it, can cause damage to the legs and the leg mounts. Ice Maker The machine is heavy, so the use of a mechanical lift is recommended for lifting the machine high enough to install on top of the bin. After the unit is placed on the bin, line it up so it is even with the back side. Secure the machine to the bin with the hardware provided with the machine. Remove the front panel and remove any shipping blocks. Note: Be sure to allow a 6" minimum space above the top of the machine for service. December 1995 Page 4 NME950R & FME1200R FOR THE INSTALLER: Remote Condenser Location Limited to a 40 foot or a 25 foot length of precharged refrigerant tubing connecting the ice maker to the remote condenser. The condenser must be above or level with the ice maker. Select the best available location, protecting the condenser from extremes of dirt, dust, and sun. Meet all applicable building codes. Usually the services of a licensed electrician are required. Roof Attachment 1. Install and attach the remote condenser 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. 2. Have an electrician connect the remote condenser fan motor to the ice maker, using the junction box at the back of the ice maker. PRECHARGED LINE ROUTING CAUTION Do not connect precharged tubing until all routing and forming of the tubing is complete. See the coupling instructions, page for connecting instructions. 1. Each set of precharged refrigerant lines (either 25 foot or 40 foot) 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, one end has a schrader valve connection, that end goes to the condenser. 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 3/4 inch. 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. 4. Spiral the excess length of pre charged tubing inside the building. Use a horizontal spiral (as illustrated) to avoid any traps in the lines. 5. Have the roofing contractor seal the holes in the roof per local codes. Note: Precharged tubing contains a R-404A holding charge. The entire refrigerant charge required for the system is contained in the ice machine. Tubing illustration shows tight spiral; a spiral in the field depends on tubing limitations. Tight spiral not required. Traps in tubing not required, they are included as part of the Scotsman condenser and ice machine. REMOTE CONDENSER SPIRAL EXCESS TUBING INSIDE BUILDING LOCATE REMOTE CONDENSER ABOVE ICE MAKER December 1995 Page 5 NME950R & FME1200R FOR THE INSTALLER: Precharged Lines 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 "liquid line". · The 1/2 inch discharge line goes to the ice maker fitting marked "discharge line". · The 3/8 inch liquid line goes to the ice maker fitting marked "liquid line". Final Connections: 3. Begin tightening the couplings together by hand, then using two wrenches (it is important that ONLY the nut on the precharged lines be turned, the other parts of the couplings must NOT be allowed to turn or the process will tear out the diaphragms and they will be loose in the refrigeration system) tighten the coupling until it bottoms out or a definite increase in resistance is felt. SERVICE PORTS REMOTE CONDENSER 4. Using a marker or pen, mark a line lengthwise from the coupling union nut to the bulkhead. Then tighten the coupling and additional 1/4 turn. As the nut turns, the line will show when 1/4 turn is made. 5. After all connections are made, and after the king valve has been opened, check the couplings for leaks. 3/8" LIQUID LINE 1/2" DISCHARGE LINE SCHRADER VALVE NO SCHRADER VALVE TO REMOTE CONDENSER TO ICE MAKER December 1995 Page 6 NME950R & FME1200R FOR THE INSTALLER: Location TWO UNITS ON ONE CONDENSER REMOTE CONDENSER ROOF CUTAWAY EXCESS PRECHARGED TUBING INSIDE BUILDING ICE MAKERS SERVICE ACCESS SERVICE ACCESS SIDE AND BACK WALL CUTAWAY December 1995 Page 7 NME950R & FME1200R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet WATER INLET 3/8" MALE FLARE FIELD SUPPLIED WATER FILTER HAND SHUT OFF VALVE VENT ICE MAKER DRAIN, 3/4" FPT The recommended water supply is cold water. Use 3/8" O.D. copper tubing, connect to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply. Drains The cabinet has a 3/4" FPT drain. connection. The drain is at the back of the cabinet, the drain line is of the gravity type, and 1/4 inch per fo ...