User manual SCOTSMAN CME1002R

[. . . ] CME865R & CME1002R INTRODUCTION This manual is intended as a reference for the installation and service of a Scotsman ice maker model CME865R or CME1002R. This model is a remote condenser cuber, 30" wide and should be connected to a Scotsman remote condenser. Table of Contents INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 14 Page 15 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 26 Page 27 Page 31 Page 32 PRE-INSTALLATION INFORMATION ICE MACHINE SPECIFICATIONS RCE1001 SPECIFICATIONS . FOR THE INSTALLER: Machine & Bin Assembly FOR THE PLUMBER FOR THE INSTALLER: Remote Condenser FOR THE INSTALLER: Coupling Instructions FOR THE INSTALLER: Final Check List INITIAL START UP ADJUSTMENTS . [. . . ] To start the HARVEST CYCLE: Slowly rotate the shaft of the timer and switch assembly clockwise until the actuator arm on the micro switch begins the harvest cycle. FREEZE PORTION B. To start the FREEZING CYCLE: Slowly rotate the shaft of the timer and switch assembly clockwise, until the actuator arm on the micro switch starts the freezing cycle. 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 MICRO SWITCH 3. 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, 1994 Page 14 CME865R & CME1002R 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 ice maker 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 micro switch on the timer controls the power to the plug in relay coil, making it either the freezing or harvest cycle. The micro switch 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. [. . . ] -2 31 88 Access Valves: To use the access valves: 0 33 90 · Remove the cap from the stem, use a 3/16" allen wrench to check 2 35 92 that the valve is CLOSED. 4 37 94 6 39 96 · Close the valve and replace the caps when the job is finished. 8 41 98 The valve must be closed and the caps must be on or the valve 10 43 100 will leak. 12 46 102 General Information: 14 48 104 Work on the refrigeration system should only be done when it is certain 16 50 106 that the system needs repair. [. . . ]