User manual SCOTSMAN CMS1002R

[. . . ] CMS1002R INTRODUCTION This manual is intended as a reference for the installation and service of a Scotsman ice maker model CMS1002. This model is a remote condenser cuber, 30" wide and should be connected to a Scotsman remote condenser. TABLE OF CONTENTS Page Specifications For the Installer Machine & Bin Assembly . 3 Parts lists and wiring diagrams are in the center of this manual, printed on yellow paper. September, 1993 Page 1 CMS1002R SPECIFICATIONS Always refer to the nameplate, located on the back of the cabinet, for the: · model number, · serial number, · basic electrical requirements, · minimum circuit ampacity, · maximum fuse size, · and refrigerant charge. A serial number plate with the model number, serial number and refrigerant charge is located behind the front panel, below the control box. [. . . ] Loosen the adjustment screw on the cam, and rotate the shaft of the cam to move the top part of the assembly. More of a gap between the high and low portions will yield more harvest time. Tighten the set screw. SHAFT OF CAM TIMER ADJUSTMENT MICROSWITCH 3. lt is important that the length of the harvest cycle allow enough time for all the ice cubes to fall from the evaporator. Too short of a time will cause the evaporator to freeze up and stop harvesting ice. Adjustment of the harvest cycle may require an adjustment of the cube size control. To test, wait until the ice machine is near the end of a "harvest" cycle, if there is ice in the bin higher than the position the ice level control is set for, the ice machine will turn OFF at the end of the harvest cycle. If no ice in the bin, test again as described under, "To Test The Ice Level Setting". SET SCREW September, 1993 Page 12 CMS1002R COMPONENT DESCRIPTION Compressor Contactor The compressor contactor carries the compressor line current. The contactor is wired so any control in the pilot circuit, such as the bin control, and high pressure controls, etc. , will cause the contactor holding coil to be de energized, when the control contact OPENS, thereby breaking the circuit to the compressor. Cube Size Control This reverse acting (closes on temperature fall) thermostat determines how long the freezing cycle will be. The cube size control closes its contacts when the evaporator cools to the set temperature, starting the timer. A variation in heat load (either ambient air or incoming water temperature) will affect the efficiency of the refrigeration system, and that will vary the length of time it takes the evaporators to cool to the temperature at which the cube size control is set to close, which, in turn, will affect the overall cycle time. Relay The multi-function, three pole, double throw, relay plugs into a socket on the printed circuit board in the control box. The relay functions in part to by-pass the bin control during the harvest and freeze cycles, preventing the icemaker from shutting off in the middle of a cycle. The bypass action allows only complete freeze and harvest cycles; the only time that the ice maker can shut off on bin control is as the end of the harvest cycle. Timer - Timer & Switch Assembly The timer begins to turn when activated by the cube size control. The outer surface, or large diameter lobe of the timer cam, determines the length of time for finish freezing of the ice cubes, while the inner surface, or small diameter lobe, determines length of the harvest cycle. The single-pole, double throw microswitch on the timer controls the power to the plug in relay coil, making it either the freezing or harvest cycle. The microswitch is actuated by a cam assembly directly connected to the timer motor. Hot Gas Solenoid Valve The hot gas solenoid valve opens only during the harvest cycle. When it opens, it diverts the hot discharge gases so that they flow directly into the evaporator plates, by-passing the condenser and thermostatic expansion valve. The hot gases warm the evaporators, releasing the ice cubes from the ice cube molds. [. . . ] Reverse steps 1-5 to reassemble. TRANSDUCER LOCATION TRANSDUCER SOCKET TRANSDUCER PLUG CONNECTION REMOVAL OF TRANSDUCER September, 1993 Page 24 CMS1002R REMOVAL AND REPLACEMENT /////////////////////////////////WARNING////////////////////////////// Disconnect electrical power before beginning. ///////////////////////////////////////////////////////////////////////////////// Water Distributor Tubes And Manifold Tubes To remove the water distributor tube and manifold tube: 1. Slide the water distributor tube to the front about 1/8-inch along the top of the evaporator plate, until the water distributor tube can be unsnapped from the flexible notch and lifted upward to the right side. Unsnap and disconnect water distributor tubes from the water manifold section. [. . . ]