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Whirlpool of India Limited
SERVICE AND PARTS MANUAL
Document No. WOI/GNF/………………….
GLOBAL NO FROST
DOUBLE DOOR REFRIGERATORS
Sap code Model Description
WBM 470
9160 220L Thailand 4G
WBM 480
9161 250L Thailand 4G
WBM 490
9162 285L Thailand 4G
This document is intended only for qualified technicians who are aware of the respective safety
regulations
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CONTENTS Introduction 3 Safety precautions & warnings 4-5 Special Features 6 Technical Specifications 6 Care & Cleaning 7 GNF Refrigerator Parts Identification
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I N T R 0 D U C T I 0 N CFC Free Manufacturing of a refrigerator includes certain operations like foaming, gas charging of the sealed system etc. This involves the use of certain refrigerants, which are released in the atmosphere, that contain chlorine. These are termed as CFCs (Chlorofluorocarbon). CFC's when released in the atmosphere affect the ozone layer. It le
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Safety Precautions & Warnings 4
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SPECIAL FEATURES The special features of these refrigerators compared to the existing refrigerators are as follows: 1. Clean back refrigerator 2. CFC Free, No frost 3. Double door 4. Quick freeze compartment 5. Quick chiller compartment in refrigerator compartment 6. Heat loop for anti-condensation 7. Easy to handle crisper tray 8. Foamed in gasket and liners 9. Energy efficient compressor 10. Wheels for easy mobility 11. Galvanized and painted Steel body TECHNICAL
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GNF - REFRIGERATOR PARTS IDENTIFICATION 8
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ENERGY - SAVING TIPS You can help your refrigerator use less electricity by 1. Making sure the gaskets are clean and are making good contact with the cabinet. 2. Opening the refrigerator and freezer doors as little as possible. Keep food well organized and remove all of what you need at one time. 3. Not overfilling the compartments so that air cannot circulate properly. 4. Not setting the refrigerator and freezer sections to at temperature higher than necessary. If ice cream is
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CLICKING OR SNAPPING - caused by thermostat when the refrigerator stops on starts operating. The defrost timer will click when the defrost cycle begins and ends. WATER SOUNDS / GURGLING NOISE - caused by liquid settling in the tubing when the refrigerator stops operating. You may also hear defrost water dripping into the defrost water pan. TROUBLE SHOOTING - GENERAL HEAVY WARM LOAD - The amount of warm food placed in the refrigerator affects running time and power consumption. Ordin
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4. If ICE isn't made fast enough Heavy ice usage Very cold room temperature 5. If both sections are too warm Door opened often Large amount of food added Very warm or very cold room temperature R134a SERVICE CONSIDERATIONS R134a systems cannot tolerate (compared to other refrigerants) even trace amounts of foreign substances, chemical contamination or m
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SERVICE INSTRUCTIONS The GNF refrigerators 285L, 250L, and 220L all are clean back refrigerators. A clean back refrigerator incorporates the following parts foamed between the main liner and the cabinet. 1. The skin condenser - The condenser assembly is placed on the three sides of the cabinet. 2. Heat loop - The heat loop is placed along the front side of the cabinet. 3. Suction & Capillary - The suction & capillary is placed on the backside of the cabinet. The serviceable joints
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moisture and keeps them plugged with the right plug till it is required to be used in the repair. iii) Do not use lubricating oil or refrigerant from chlorine based sealed system into R134a system. iv) Use sweep charging method (explained in detail in the next section) for charging of R134a based systems after repair as it is more effective in removing the contaminants from the sealed system. v) Always replace the filter-drier in all sealed system repairs of R134a based systems vi) Do n
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CONTAMINATED R134a SEALED SYSTEM REPAIRS NOTE: Always replace the filter - drier during ANY repair on R134a sealed system. COMPRESSOR BURN OUT 1. Purge refrigerant from the system. 2. Flush the system 3. Replace the filter-drier. 4. Replace the compressor. 5. Leak check, sweep and recharge the system. RESTRICTION IN THE SYSTEM 1. Purge refrigerant from the system. 2. Determine location of restriction and repair if possible. 3. Flush the system. 4.
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3. Pull out the defrost heater from the evaporator clips holding the heater. 4. Install the new heater to the clips. 5. Make sure that the defrost heater leads are routed properly, and plug the connector into the wiring harness. 6. Now proceed mounting the evaporator cover. Repairing / Replacing Evaporator NOTE: It may be helpful to remove the freezer door if it is hinged on the same side as the evaporator heat exchanger entrance. 1. Purge the refrigerant from t
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4. Remove the bottom cover of the freezer compartment. 5. Remove the evaporator cover with fan motor. 6. Remove the defrost heater and the bimetal switch from the evaporator. 7. Disconnect the main wiring harness plug from the cabinet connector. 8. Unwrap the sound deadening material from the evaporator inlet. Keep it in one piece. It will need to be reinstalled later. 9. Cut away the foam stop material even with the plastic freezer compartment liner where the heat
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REFRIGERATOR COMPARTMENT The refrigerator compartment comprises of the following parts: 1. Shelves and crisper 2. Thermostat 3. Bulb holder and bulb 4. Timer motor All the shelves and trays come out by carefully pulling outwards. The electrical parts like thermostat, bulb holder, bulb and timer motor are fixed to a common control box which is fixed on top back of the refrigerator compartment. For replacement of the parts in the control box, the procedure is as follows:
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SEALED SYSTEM DIAGNOSIS REVIEW Entering and properly processing the sealed refrigeration system requires special equipment and time consuming, therefore a system should not be entered until it is determined that it is at fault. There are four conditions that make entering the sealed system necessary. They are: 1. Incorrect amount of refrigerant 2. Restriction of refrigerant flow 3. Refrigerant leak 4. Compressor not operating correctly INCORRECT AMOUNT OF REFRIGERANT 1. L
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