MODEL: RL-28FBSW RL-28FBSI SERVICE SERVICE MANUAL MANUAL REFRIGERATOR CONTENTS 1. PRECAUTION..............1 2. PRODUCT SPECIFICATION..........2 3. STRUCTURE...............3 4. CIRCULATION OF REFRIGERANT........5 5. SCHEMATIC- DIAGRAM............6 6. SPECIFICATIONS OF MAJOR FUNCTIONAL PARTS..7 7. OPERATING PRINCIPLE OF MAJOR COMPONENTS AND INSPECTION METHOD..........8 8. HOW TO REPLACE MAJOR COMPONENTS....11 9.
1.PRECAUTION 1-1. Safety precautions 1-1. Safety precautions Only qualified service technicians who are thoroughly familiar with the refrigerating cycle and the required safety checks should perform service operations in accordance with specified guidelines. 1 -1-1. Prior to servicing, be sure to disconnect the product from its electrical power source by removing the products eletrical plug from the wall receptacle to preclude the possibility of resultant presonal injury and / or property damage.
2.PRODUCT SPECIFICATION Model RL28FBSW RL28FBSI Type Two door refrigerator & freezer AC 220V~50Hz Power supply Total 247L Capacity Refrigerator 167L Width Overall dimensions Depth (mm) Height 1750 Refrigerant(Sealed volume:g) HFC-134a(160g) Mechanical(Thermostat) Temperature control Insulation material Polyurethane Foam(141b) Magnetic gasket Door Seal Liner 1Guard-Bottle,1 Guard Variety,2Guard-Egg,1Tray Ice,1Tray Egg Door Storage(Option)
6.SPECIFICATIONS OF MAJOR FUNCTIONAL PARTS ITEM SOURCE AC 220V~50Hz QB66C MODEL COMPRESSOR OUT PUT/STARTING TYPE 165W/RSIR FIN TYPE EVAPORATOR REFRIGERATION CONDENSER CLUSTER CYCLE DRYER MOLECULAR SLEVE CAPILLARY TUBE O1.8*0.62*3500 REFRIGERANT(g) R-134a 160g THERMOSTAT WDF29 POSISTOR 8EA503 ELECTRICAL PARTS MODEL MM3-23GC OVERLOAD P ROTECTOR CLOSE TEMP/OPEN TEMP...
7.OPERATING PRINCIPLE OF MAJOR COMPONENTS, AND INSPECTION METHOD 7-1.Compressor Motor Inspection method Operating principle 1) Measure the resistance of each winding of the The compressor motor, mounted directly to the compressor. compressor and located inside a sealed steel a. Disconnect the power cord. case, has two windings.
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7-3.Relay Inspection method Operating principle The relay momentarily energizes the start winding to start the rotation of the compressor motor. Most later refrigerator models use a solid state type relay. Unlike the mechanical type relay, the solid state relay has no coil and no moving contacts. This relay consists of a small solid state wafer that has a low resistance at room temperature.
7-4.Temperature Control Inspection method Operating principle Put the probe of the ohmmetor to the terminal A temperature control is used on all refrigerators and of the temperature control, and check for the freezers to regulate the operation of compressor and opening and closing of the contacts by turning thus maintain desired food temperatures.
8.HOW TO REPLACE MAJOR COMPONENTS 8-1. REFRIGERATION CYCLE COMPRESSOR: In evaporator liquid refrigerant is so expanded to absorb heat around evaporator that compressor sucts refrigerant in low temperature and low pressure and then compresses it to gaseous refrigerant in high temperature and high pressure which will be discharged to outside. Gaseous refrigerant in high temperature and in high pressure so radiates evaporation latent heat CONDENSER: absorbed from evaporator surrounding during passing through condenser and compression heat...
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8-2. Steps for replacing thermostat, 1) Take off the screws fastening the lamp box. 2) Take off the screws fixing the capillary tube. 3) Take off the thermostat. 8-3. Steps for replacing relay, 1) Take off the cover of relay by removing the fastener. 2) Take off the relay by pulling it right hand.
9. TROUBLE - SHOOTING 9-1. Compressor does not run at all (Does not cool at all) Cause Correction What to be checked Temperature control set to position "OFF" Check control knob setting Turn the control to "COLD"(MAX) position. Erroneous plug cord inserting Check plug cord inserting Insert plug cord into outlet correctly.