User manual SCOTSMAN CME1202R

[. . . ] CME1202R & CME1402R 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 FOR THE INSTALLER . page 4 FOR THE INSTALLER: Location & Assembly . page 5 FOR THE INSTALLER: Location & Assembly . page 6 FOR THE INSTALLER: Scotsman Remote Condenser . [. . . ] One complete rotation of the cam will take eight minutes. Harvest is preset at three and one half minutes, but is adjustable. High Pressure Safety Control This is a manual reset control that shuts down the ice maker, should the discharge pressure ever reach 450 PSIG. 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 15 PSIG. Located below the control box. CONTROL BOX CUBE SIZE CONTROL RELAY TIMER & SWITCH Hi Pressure Reset, Push to Reset June 1996 Page 16 CME1202R & CME1402R 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 June 1996 Page 17 CME1202R & CME1402R 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. WATER DISTRIBUTORS SUMP STAND PIPE OPTIONAL WATER FILTER HAND VALVE SUMP PUMP COMPONENT LOCATION June 1996 Page 18 DRAIN CAP CME1202R & CME1402R 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. Switch the ICE-OFF-WASH rocker switch to OFF. Remove the control box cover, and rotate the shaft of the timer and switch assembly CLOCKWISE advancing to the freezing cycle. [. . . ] Note: Only a HFC type dryer can be used. 56 114 146 430 · When brazing the tubing connections to components such as the 58 118 148 441 TXV, the component must be protected by heat sink material. 60 123 150 452 Recover, reclaim or recycle refrigerant. The method chosen is up to 62 127 152 464 the service company. [. . . ]