ND650 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 maker-dispenser. The ND650 is a combination nugget ice maker and countertop dispenser, with the option of wall mounting. A water station is standard. The ND650 ice making section is equipped with the following features: electronic controls for bin level and low water; thermostatic expansion valve; front service for most components; and R502 refrigerant. The ice dispensing section is a seamless plastic storage bin, with a stainless steel ice agitator at the bottom to sweep the ice into the dispensing chute. TABLE OF CONTENTS For the Installer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Environmental Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Wall Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Soda Valve Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 For the Plumber For the Electrician Start Up ..................................... 7 ................................... 8 Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Component Description Electrical Sequence Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Service Diagnosis Removal and Replacement Water Reservoir Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Breaker and Bearing Water Seal Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Electronic Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Parts Lists and Wiring Diagrams are printed on yellow paper in the center of this manual. March, 1989 Page 1 ND650 FOR THE INSTALLER: Specifications This ice maker-dispenser is designed to be mounted on a machine stand, or a countertop, or using wall mounting kit KWB3, hung from a wall. The sink may be retained, or removed and the optional longer splash panel (KSP1) installed in place of the original. Instructions for each kit are included in this service manual. Before beginning the installation, check that all the materials and kits required are available at the installation location. 20.5" 4.5" 3.54" ELECTRCIAL JUNCTION BOX 1.88" dia NAMEPLATE on inside of right side panel 12.25" 2.56" 3/8" FPT Condenser Water Inlet (Water Cooled) 3/8" Flare Potable Water Inlet 5.12" 14.06" 19.19" 1.88"dia Optional for water and drain lines 21.5" 1/2" FPT Cond. Drain (Water Cooled) 3/4" FPT Drain 12.27" 3.12" 1.12" 6.43" SPECIFICATIONS Model Number Dimensions (w/o stand) H" x W" x D" 48.88 x 26 x 21.5 same same same Ice Type NUGGET same same same Condenser Cabinet Type Finish Air Water Air Water Painted Painted Stainless Stainless Basic Electrical 115/60/1 115/60/1 115/60/1 115/60/1 Minimum Circuit Ampacity+ 17.2 16.2 17.2 16.2 Maximum Fuse Size 20 20 20 20 ND650AE-1A ND650WE-1A ND650AS-1A ND650WS-1A + Minimum Circuit Ampacity is used to determine wire size and type per National Electric Code. March, 1989 Page 2 ND650 FOR THE INSTALLER: Environmental Limitations Installation Limitations air cooled models in a location where there is less This ice system is designed to be installed indoors, than 6" clearance to the left and right of the in a controlled environment. cabinet. Minimum Maximum 0 0 100 F. Air Temp 50 F. 1000F. Water Temp 400F. Water Pressure 20 PSI 80 PSI Voltage 104 126 Operating the machine outside of the above limitations, or outdoors, is potentially damaging to the machine; also it is misuse of the machine, which may void the warranty. Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the CEILING standards of UL, NSF, and CSA. CUT AWAY Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way, including the SPACE use of any part and/or other components not ABOVE WALL specifically approved by Scotsman. FOR CUT AWAY SERVICE Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and design are subject to change without notice. Water Limitations 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. This section is not intended as a complete resource for water questions, but it does offer these general recommendations: 1. Filter the water used to produce ice. That is the water going to the "potable" water connection. Water filters vary greatly in ability and function. Install one that filters out suspended solids to a dimension of 5 microns or smaller. The finer the filter the better, but finer filters will clog sooner than course ones. It may be necessary to add a course filter ahead of the fine filter to prolong filter life. 2. Check with a water treatment specialist for a water test, and recommendations regarding filters and treatment. Service Limitations Do not install in a location where the top of the machine is within 6" of a fixed ceiling. Do not install March, 1989 Page 3 6" SPACE FOR AIR (A/C) SPACE FOR UTILITIES 6" SPACE FOR AIR (AIR COOLED) ND650 FOR THE INSTALLER 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 above and behind it for service. Air cooled models require a minimum of 6 inches to the left and right of the machine for air circulation. Machine Stand Installation Tip the stand on it's back and install the legs, return the stand to the upright position. Adjust leg levelers so that the stand does not "rock". Counter Top or Machine Stand Installation The base of the icemaker-dispenser must be sealed to the object it rests upon. Food grade silastic sealant such as Scotsman part number 19-0529-01 is recommended. Place a bead of the sealant on the machine stand or counter top to match the outside edge of the cabinet base and sink. The icemaker-dispenser is heavy: use of a mechanical hoist is recommended to lift it to the height required to install it. The DMS machine stand has holes in the top that match up with "feet" on the icemaker-dispenser. Place the cabinet onto the machine stand, so that the unit "snaps" into place. In both counter top and machine stand installations, wipe off and neatly smooth any excess sealant. Level the machine stand and cabinet. Unpack and install the sink brackets. Remove the splash panel. Fit the sink assembly onto the two sink brackets (push the sink down over the brackets at the back), connect the drain, and press the sink onto the bead of sealant. Wipe off and ATTACH SINK DRAIN TO CABINET DRAIN WITH RUBBER TUBE ATTACH BRACKET SEAL THE UNIT TO THE COUNTER OR STAND neatly smooth any excess sealant from under the sink edge. Replace the splash panel. BRACKET 2 SCREWS PER BRACKET March, 1989 Page 4 ND650 FOR THE INSTALLER: Wall Mount Kit /////////////////////////WARNING/////////////////////////////// It is recommended that the wall mounting installation be done by an experienced contractor. The weight of the machine when in use may exceed 350 pounds. The unit should be mounted on a solid, rigid wall with proper fasteners for that type of wall and of adequate strength to support the weight of the machine when in use. ///////////////////////////////////////////////////////////////////////// Clearance between the wall and the icemaker is a maximum of 1 inch. Check utility connections first. The electrical junction box will have to be removed, and the electrical connections made inside the cabinet in compliance with local codes. The plumbing connections may be made through the base, or at either side through the pre-punched holes, using standard plumbing practices. Interior plumbing lines must be disconnected from the original connections and plugged when routing 38.6" through the side or base. 1. Remove machine top. Attach bracket "A" to machine using (3) nuts, (3) flat washers, (3) lockwashers, and (3) 5/16-18 bolts received with 7.83" the kit. BASE HOLE 1" CLEARANCE SIDE ROUTING 16" 16" A DO NOT LIFT ON SINK B 12" 12" 2. Mount brackets "B" and "C" to the wall at the dimensions shown for the unit. (hardware for this is not included). ///////////////////////////////////////////////////////////////////////// Use fasteners and wall of sufficient strength to carry the use and weight of the icemaker-dispenser. ///////////////////////////////////////////////////////////////////////// 3. Lift unit up and hook bracket "A" over bracket "B". Slide unit until the two remaining holes are aligned and secure with the remaining (2) 1/4-20 bolts, flat washers and lockwashers. C March, 1989 Page 5 ND650 FOR THE INSTALLER: Soda Valve Kit Installation Instructions Note: Carbonator and carbonated product cooling system are not included. //////////////////////////WARNING//////////////////////////// Disconnect electrical power to the icemaker dispenser. //////////////////////////////////////////////////////////////////////// 1. Remove cabinet top panel, front panel, and splash panel. 2. Remove screws and remove filler plate from the ice maker dispenser. 3. Remove large plug from base of icemaker-dispenser. 4. Install valve assembly in the ice machine with Note: The water glass filler station will have to be removed, this includes: glass filler lever, water tube, spring, as well as the filler plate with the switch on it. The solenoid valve may be left in place. two screws through the same holes that held on the valve cover plate. Install 1-3/8" ID insulation tube over the syrup and carbonated lines. 5. Route product lines through the hole in the base. 6. Make all required connections soda line connections, using field supplied materials. All lines should be insulated. A carbonated water recirculating line is provided and recommended to insure that high quality drinks are dispensed. 7. Install transformer in upper compartment of icemaker-dispenser, using screws provided. It may be necessary to pre-drill holes. 8. Route drink valve assembly electrical leads up to the transformer. 9. Connect wire leads from the drink valves to the 24 volt output side of the transformer. 10. Locate a 115 volt continuous power source from within the icemaker control box. Route white and black leads from the 115 volt input side of the transformer and connect to the 115 volt power source. 11. Turn on power and soda equipment, check operation and check for leaks. Adjust valves for proper mixture. 115 VOLT CONNICTION TRANSFORMER 24 VOLTS SODA VALVES ATTACH DRINK VALVE ASSEMBLY HERE SODA LINES March, 1989 Page 6 ND650 FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Air Cooled Models: The recommended water supply is clean, 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. Water Treatment: In most areas, a water filter of some type will be useful. In areas where the water is highly concentrated with minerals the water should be tested by a water treatment specialist, and the recommendations of the specialist regarding filtration and/or treatment should be followed. Water Cooled Models: A separate 3/8" O.D. copper line is recommended, with a separate hand valve to control it. It is connected to a 3/8" FPT condenser inlet at the back of the cabinet. The water pressure to all lines must always be above 20 psig, and below 120 psig. WATER INLET CABINET DRAIN OPTIONAL WATER FILTER Drains Air Cooled Models: There is one 3/4" FPT drain at the back of the cabinet, the drain line is of the gravity type, and 1/4 inch per foot fall is an acceptable pitch for the drain tubing. There should be a vent at the highest point of the drain line, and the ideal drain receptacle would be a trapped and ...