Manuals / Haier / Kitchen Appliance / Freezer

Haier BD-478A service manual Features

Models: BD-478A

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FEATURES

Features

●Door lock for safety storage

●High pressure foam cover for efficient Temperature preservation.

●Adjustable thermostat. ●Superior insulation. ●Efficient defrosted storage

●Designed for cafeterias restaurants and hotels

●Low power consumption 20% less than the other similar freezers

●Imported high quality compressor and condenser, large freezing capacity, 1.5 times more then regular freezers Freezing quick and deep freeze functions are 2 times faster then regular freezers

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Contents

Features BD-478A FreezerHaier Group Manual No.BD-478AContents Product Code Illumination and Series Introduction PRODUCT CODE ILLUMINNATION AND SERIES INTRODUCTIONB The first letter of “FREEZER” in Chinese spelling C Capacity. Unit litre D Improve Series NumberFeatures FEATURESSpecifications SPECIFICATIONSPower Supply V/Hz Unit Dimension W*D*HSAFETY PRECAUTIONS Safety PrecautionsSAFETY PRECAUTIONS Safety Precautions8. Do not operate your freezer in the presence of explosive fumes 9. Do not refreeze foods, which have been thawed completelyNet Dimension NET DIMENSIONINSTALLATION AND ACCESSORY PARTS Installation and Accessory PartsInstallation and Accessory Parts INSTALLATION AND ACCESSORY PARTSElectrical Requirement INSTALLATION AND ACCESSORY PARTS Installation and Accessory PartsAdjustable temperature dial Operating Your FreezerInstallation and Accessory Parts INSTALLATION AND ACCESSORY PARTSDefrosting and Draining The Freezer SYSTEM FLOW CHART System Flow ChartFUNCTION SCHEDULE Function Schedule12.1 System Trouble shooting CIRCUIT DIAGRAMCircuit Diagram MAINTENANCE SERVICE AND TROUBLE SHOOTINGMAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting12.1.1 Servicing freezer 12.1.2 Reasons of electricity leakage of freezerMaintenance Service and Trouble Shooting MAINTENANCE SERVICE AND TROUBLE SHOOTINGIf electricity leakage occurs outside the compressor, please use 12.1.3 Troubleshooting observation MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting tetra chloromethane or alcohol to clean it. If the leakage occurs in the inner of compressor, it needs to be changed12.1.4 Troubleshooting by sounds MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 1 At normal operation conditions, the temperature around the surface of freezer evaporator is nearly the same the thickness of frost layer is similar. If there is no frost at the surface of evaporator bed type freezer at all of its inner wall, or only a small part at the upper, conclusion can be made that the operation of refrigeration system is not normal, the refrigerant is insufficient or there is leakage12.1.5 troubleshooting by touch MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting normal running sounds. If there is heavy buzz that means the motor has not been started normally. If there is bump sound, this means that the suspended spring in the compressor is broken and the compressor is running in tilt. When these matters occur, please change compressor12.1.6 System noise repair MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting please move your hand over it quickly, otherwise your hand will be stuck12.1.7 Poor freezing effect analysis and solutions MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 6 If the fan supporter is loose and noise is caused, please tighten12.1.8 How to handle the seal bar for poor sealing MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting near thermal source or not if the room temperature is too high or not if the condenser is blocked by cloth pieces or paper or dirt or not. Any one of these matters will affect heat radiation of condenser and refrigeration ability will be reduced12.1.9 Why freezer cannot be used at low temperature environment 12.1.10 How to know there is problem with compressor motorMAINTENANCE SERVICE AND TROUBLE SHOOTING 12.1.11 Freezer problem analysis and serviceProblems 4. The knob of temperature controller is atThe temperature controller is out of position for suitable temperatureadjust its value to rated There is mechanical problem in the6. Temperature around compressor is too Adjust12.1.12 Procedure for fan change MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 12.1.13 Procedure for temperature controller change12.2 Common freezer problems 12.2.1 Freezer cannot be startedMAINTENANCE SERVICE AND TROUBLE SHOOTING 12.2.2 Operation of freezer is not normalMaintenance Service and Trouble Shooting 12.3.3 Service procedure 12.3.2 Repair equipment Requirements12.3.4 Changing procedure of R134a compressor 12.3.5 Compressor installation and brazing procedures 12.4.1 Product characters 12.4 Application and maintenance of freezer12.4.2 Notice for use 3 Please don’t leave the freezer at humid or corrosive gas area 12.4.3 Safety notice of product 12.4.4 Maintenance12.4.5 Standard procedure of maintenance 12.5 MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 4 Check the casters and change if there is any damage12.5.1 Freezer repair tool and equipment 12.5.2 Notice for useMAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble ShootingMAINTENANCE SERVICE AND TROUBLE SHOOTING 12.5.3 Procedure for filling equipmentMaintenance Service and Trouble Shooting 12.6 Freezer noise 12.6.1 Freezer noise sources12.6.2 Compressor MAINTENANCE SERVICE AND TROUBLE SHOOTING3 Noise of flowing liquid 12.6.3 How is the sound of water flowing generated? 12.6.4 Gas flowing sound12.6.6 Why the freezer’s noise increases after using 12.6.7 Why freezer’s noise increases after stop use for sometime? 12.6.8 How to reduce freezer’s noise?12.6.9 why freezer noise changes greater at night? sometime?12.6.11 Why freezer noise measured at home is incorrect? 12.6.10 What are the national stipulations for freezer noise?2 Put freezer onto 5-10mm elastic cushion 12.6.13 Why the noises of it type freezers are different? 12.6.16 How to determine that the sound is noise or normal? 12.7 National standard for noise 12.7.2 Noise testMaintenance Service and Trouble Shooting MAINTENANCE SERVICE AND TROUBLE SHOOTINGthe freezer stops, the measurement must be interrupted and resume 3min 12.8Measuring technology of freezer performance parameter MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 12.8.1 Measuring content12.8.2 Test method and instrument MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting 12.8.2.1 Sealing performance test of refrigeration systemMAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting12.8.2.4 Ground resistor 12.8.2.5 Leakage of currentMaintenance Service and Trouble Shooting MAINTENANCE SERVICE AND TROUBLE SHOOTINGmaterial of enclosure structure of test room is made up of 10mm thick Maintenance Service and Trouble Shooting MAINTENANCE SERVICE AND TROUBLE SHOOTINGa. Its temperature Maintenance Service and Trouble Shooting MAINTENANCE SERVICE AND TROUBLE SHOOTING7 Cooling speed EXPLODED VIEW Exploded View Table 6-3 Storage temperature of freezerLIST OF PARTS Parts list Exploded View0070810207 0075020001 6.The spare parts price on net is FOB Qingdao term