User manual SCOTSMAN CMS1402R

[. . . ] CMS1402R 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. Table of Contents Specifications . For the Installer Location & Assembly Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 7 8 9 10 12 13 15 17 19 20 21 25 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . For the Electrician For the Plumber Final Check List Initial Start Up . [. . . ] Low Pressure Control (Pump Down) This pressure control connects power to the compressor contactor coil. Its Cut In is 35 PSIG and its Cut Out is 20 PSIG. Located below the control box. CONTROL BOX CUBE SIZE CONTROL RELAY TIMER & SWITCH September 1993 Page 14 CMS1402R COMPONENT DESCRIPTION Bin 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. When set at FULL it will not allow the machine to fill the bin any closer to the ice machine than about 8", and it will not work if the distance to the bottom of the bin is greater than 8 feet. BIN ICE LEVEL SELECTOR SWITCH Because it uses sound waves, a slight "ticking" sound can be heard coming from the bottom of the machine. There are three parts to the control, the transducer, the circuit board, and the ice level control switch. ICE/OFF/WASH SWITCH THE USER CAN SELECT THE AMOUNT OF ICE TO BE MAINTAINED IN THE BIN. SOUND WAVES FULL PARTIAL September 1993 Page 15 CMS1402R COMPONENT DESCRIPTION Water Inlet Solenoid Valve The water inlet solenoid valve fills the sump assembly with water and excess water overflows out the standpipe and down the drain. This action fills and rinses the sump during each harvest cycle. Water Distribution System The water distribution system evenly supplies water to all cells of the evaporator plates. The water pump pumps water from the sump up the vertical tygon tube to the tee. From there water is channeled through the water manifold to the water distributors, above each evaporator plate, and from six holes within each distributor, water flows to the cells of each side of the evaporator plates. Gravity flow returns the unfrozen excess portion of water to the sump reservoir for recirculation. Hot Gas Solenoid Valve The hot gas solenoid valve functions only during the harvest cycle, to divert the hot discharge gas from the compressor, by passing the condenser, for direct flow in the evaporator plates to release ice cubes from the ice cube molds. The hot gas solenoid valve is installed in a branch of the discharge line. When the harvest cycle begins the energized solenoid coil lifts the valve stem within the valve body, to cause the hot discharge gas to be diverted to the evaporators. Strainer A water strainer is located in the potable inlet water line before the water inlet solenoid valve. Clean the water strainer frequently. WATER DISTRIBUTORS SUMP STAND PIPE OPTIONAL WATER FILTER HAND VALVE SUMP PUMP COMPONENT LOCATION September 1993 Page 16 DRAIN CAP CMS1402R 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. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 7. Pour the cleaning solution into the reservoir until CLEANING: ICEMAKER full. Move the master switch to the WASH position. [. . . ] · If gauges must be used, use very short hoses. Minimal refrigerant discharged into the hoses September 1993 Page 27 CMS1402R REMOVAL AND REPLACEMENT Thermostatic Expansion Valve 1. Before replaceing this valve, be certain that the valve is the cause of the problem, and cannot be adjusted. Locate the TXV bulb (on the suction line), remove the clamps and bulb from the tube. [. . . ]