User manual WHIRLPOOL WRX988SIBB ENERGY GUIDE

[. . . ] Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal and Replacement . . Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. This manual was printed on recycled paper. April, 1993 Page 1 WRX988SIBB FOR THE INSTALLER The WRX988SIBB will fit Scotsman ice storage bin MDB900 and is stackable with stacking kit KSMCM48. Either a Scotsman remote condenser or a Mac 6 condensing system are required to for this ice system. Other items required: · Precharged tubing kit · Power cord and receptical · Condenser power cord · If stacking two units, a stacking kit · If using one unit, a caster kit for the bin. Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. [. . . ] If the ice level control is still CLOSED, a whole new cycle will begin. If the ice level control is OPEN, the icemaker will begin to shut OFF. Pump Down Cycle: When the ice level control is open at the end of the harvest cycle, power is removed from the liquid line valve coil, and the pump down cycle begins. The compressor will continue to run until the pump down control, sensing low side pressure, opens at 20 PSIG. WATER DISTRIBUTION INLET WATER VALVE DRAIN RESERVOIR WATER SCHEMATIC REFRIGERATION SCHEMATIC April, 1993 Page 14 WRX988SIBB COMPONENT DESCRIPTION Cube Size Control This reverse acting thermostat controls the length of the freezing cycle. When the suction line gets cold enough, the cube size control closes (on temperature fall) and starts the timer. A change in either ambient air or incoming water temperature will affect the efficiency of the refrigeration system, and this will vary the length of time it takes the evaporator to reach the temperature at which the cube size control is preset to close. Relay The multi-function, three pole, double throw, plug-in relay is installed directly into a receptacle on the printed circuit board in the control box. The relay functions in part to by-pass the bin thermostat control to prevent the icemaker from shutting OFF, when the bin thermostat opens during the freezing cycle. The bypass action serves to ensure full-sized ice cubes with each harvest cycle. Timer - Timer & Switch Assembly The function of the timer begins when activated by the cube size control. The outer surface, or large diameter lobe of the timer cam, determines the timer cycle for finish freezing of the ice cubes, while the inner surface, or small diameter lobe, determines the time cycle for the harvest cycle. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 7. Pour the cleaning solution into the reservoir until CLEANING: ICEMAKER full. During the wash cycle, if the machine runs out of solution, mix 2 more gallons of solution per step 6, refill the sump and continue the wash cycle for the remainder of the 30 minutes. Rotate the shaft of the timer and switch assembly CLOCKWISE to the harvest position (low part of the cam against microswitch). Move the ICE-OFF-WASH switch to the ICE position to start the Harvest cycle. If after completing this procedure one or more evaporator plates does not have a full flow of water for each vertical column of cubes, shut down the operation and remove and clean all water distributor manifolds. Reinstall the water distributor manifolds. Electrical Shock Hazard. Remove the control box cover, and rotate the shaft of the timer and switch assembly CLOCKWISE advancing to the freezing cycle. Remove the hose clamp, rubber cap and drain all the water from the sump assembly into the bin. Mix 24 ounces of Scotsman Ice Machine Cleaner with 2 gallons of warm (950F. KEEP OUT OF THE REACH OF CHILDREN. Note: The ice making portion of the water system should be sanitized after cleaning by repeating steps 2-12 and substituting a sanitizing solution for the cleaning solution. 13. [. . . ] All liquid R-22 must be weighed into the receiver through the "front seated" receiver outlet service valve. FRONT SEATED VALVE SERVICE PORT April, 1993 Page 29 WRX988SIBB REFRIGERATION SERVICE General: · Scotsman recommends that any work on the refrigeration system only be done when it is certain that the system needs repair. · Refrigerant should not be added except as a way to determine the proper operation of the product. If the system was low on refrigerant, there is a leak, and it must be found and repaired. · Although this system uses R-22, it should not be wasted to the atmosphere, but reclaimed. [. . . ]