Haier BD-478A service manual Safety notice of product, Maintenance

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(10)Cold drinks and snacks, which contain much milk and needs to be stored at low temperature, please try to put them at lower part of freezer.

(11)When the freezer is used outdoors, please keep unit away from direct sun light. Frequently clean the inside and outside of freezer especially the cabin part including condenser, compressor, etc.

12.4.3 Safety notice of product

(1)The freezer needs to be on a separate ground circuit with a 5A minimum carrying capacity.

(2)If the electrical cable needs to be extended, the cross section of extending wire should not be less than 1.5mm2.

(3)There must be reliable ground connection for the freezer; ground line is not allowed to connect to water pipe, gas pipe, etc.

(4)Once the freezer is cut off, at least 5 minute must be waited for starting again, otherwise the compressor or refrigeration system will be damaged.

(5)Explosive, flammable and volatile substance, liquid filled glass containers, alkalis or corrosive acids are not or be stored in freezer.

(6)Do not let children play in freezer compartment so as to avoid suffocation or damage to freezer.

MAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting

12.4.4 Maintenance

Frost removal: At the inner container, there will be frost layer after using some time. If the layer is too thick, it will affect refrigeration and increase

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Contents BD-478A Contents First letter of Freezer in Chinese spelling Product Code Illumination and Series IntroductionFeatures FeaturesBD-388A BD-478A SpecificationsSafety Precautions Safety Precautions 1420*715*1470 1690*715*1470 Net Dimension1420*715*810 1690*715*810 ·Proper Air Circulation Installation and Accessory PartsElectrical Requirement Installation and Accessory Parts Food Storage Basket Defrosting and Draining The FreezerSystem Flow Chart Function Schedule Adjustable temperature dialBrief description of principle about BD-318A/428A Maintenance Service and Trouble ShootingReasons of electricity leakage of freezer Servicing freezerMaintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Troubleshooting by sounds Troubleshooting by touch System noise repair Poor freezing effect analysis and solutions How to handle the seal bar for poor sealing How to know there is problem with compressor Motor Why freezer cannot be used at low temperature environmentPage Page Procedure for temperature controller change Procedure for fan changeCommon freezer problems Operation of freezer is not normal Evacuation and fill machine is special only for R134a use Service procedureRepair equipment Requirements Changing procedure of R134a compressor Compressor installation and brazing procedures Product characters Application and maintenance of freezerPage Maintenance Safety notice of productStandard procedure of maintenance 12.5 It is not allowed to fill R134a by R12 filling equipment Freezer repair tool and equipment⑧ Switch off motor Procedure for filling equipmentFilling Freezer noise sourcesCompressor Resonance sound of compressor components Gas flowing sound How is the sound of water flowing generated?Why the freezer’s noise increases after using Sometime? Why freezer’s noise increases after stop use for sometime?How to reduce freezer’s noise? Why freezer noise changes greater at night?What are the national stipulations for freezer Noise? Why freezer noise measured at home is incorrect?Page Answer Why the noises of it type freezers are different?How to determine that the sound is noise or Normal? There are stipulations in Items 6.5.7.1 and 6.3.6.1.of GB/T Noise testMaintenance Service and Trouble Shooting 12.8Measuring technology of freezer performance parameter Test method and instrument Temperature with loadGround resistor Maintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting Exploded View List of Parts QTY BD-388A/478A 392% 600% Lamp switch BD-388A/478A 010% 020%