TABLE OF CONTENTS SAFETY PRECAUTION ….........…………………....5 2 INTRODUCTION OF WASHING MACHINE ………………....…...….. 2.1 C haracteristics of product …………………….……………………………………..Working principle ………………….…………………………………………………... Summary model of product …………………………………………………….... Exploded view & List of parts ………………………………………………….... 2.5 Introduction of control panel ……………….…………………………………………..
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TABLE OF CONTENTS 4.12.1 Pressure switch ....................4.12.2 Inlet valve ....................4.12.3 Detergent box kit ..................4.13 Drain system ....................4.13.1 Drainage system ..................4.13.2 Drain pump ....................4. 14 Door kit ......………………....………………………….……. 4.15 Gasket ......………………....………………………………….. 4.16 Door lock ......………………....………………………….…… 4.17 NTC temperature sensor ......………………........….
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TABLE OF CONTENTS 5.22 Undo the absorber ......………………....……………………... 5.23 Undo the lower counterweight ......……….………………………….. 5.24 Undo the motor ......………………....………………………… TROUBLESHOOTING ……......………………....……………..Circuit program & wiring connection figure ......…..……………… PCB wiring figure ......………………....……………………..Schedule of failure alarm & its disposal ......……..…..…..…..Electrical parts working &...
1.SAFETY PRECAUTION 1.Do not try to repair the machine by yourself. The machine may be damaged and its life be shortened. What is worse, it will injure yourself. 2.Pull out its plug from the power socket before maintenance. Electricity! 3.Do not use several power plug with one socket. To avoid fire, don’t use any socket with its actual current more than rated current.
2.INTRODUCTION OF PRODUCTS haracteristics of product It is the latest designed machine, which have many advantages such as fashion, large rated washing capacity and large washing range. Specifically, its feature is as following: 1.Large washing range from cotton to wool and silk. 2.Gentle washing: no twist and little abrasion.
2.Overview of products 2.INTRODUCTION OF PRODUCTS the Chemical reaction. In a word, drum washing machine destroys bonding force between dirt and clothes in virtue of intergraded force of water, detergent and mechanical force, to clean away the dust. 2.3 Summary model of product P.07...
2.INTRODUCTION OF PRODUCTS 2.4 Explored view & list of parts 01 Pressure Switch Pressure Chamber 03 Service Panel 04 Leg_Sub 05 Water_ Inlet_Pipe_Kit 06 The Bend Of Drain Hose 07 Transport Bolt Kit Rear_ Cover 09 Water_ Inlet_ Valve 10 FILTER 11 Suspension Spring 12 Spring Hanger 13 Top_ Bracket...
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2.INTRODUCTION OF PRODUCTS 2.4 Explored view & list of parts 14 Belt 25 Front_Right_Counterweight 15 Driving_Pulley 26 Front_Left_Counterweight 16 Screw 27 NTC 17 Upper counterweight 28 Heater 18 Rear Tub 29 Heating Brasket 19 Tub_Seal 30 Hose Clamp 20 Drum Kit 31 Pump 21 Front_Tub 32 Tub_Drain_Hose Kit...
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2.Overview of products 2.INTRODUCTION OF PRODUCTS 2.4 Explored view & list of parts Control Panel Sub 36.1 PCB 36.2 Control_Panel 36.3 dalle 36.4 Start_pause_spring 36.5 Button 36.6 Light_Transferrer Top_Cover_Board Cycle_Select_Knob P.10...
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2.INTRODUCTION OF PRODUCTS 2.4 Explored view & list of parts 39 Hose Clamp 4 Inleft Hose 4 Softener Cap 4 Detergent Box 4 Drawer Panel 4 Tub Water Inlet Hose P.11...
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2.Overview of products 2.INTRODUCTION OF PRODUCTS 2.4 Explored view & list of parts 45 Door Support Plate 46 Front Panel 47 Door Sub 47.1 Door Glass 47.2 Door_Plunger_Spring 47.3 Hook Pin 47.4 Door Plunger 47.5 Inner Ring 47.6 Door Handle 47.7 Outer_Frame 47.8 Door_Hinge_Pin_Cover 47.9 Door Hinge...
2.INTRODUCTION OF PRODUCTS 2.5 Introduction of control panel 1.Drawer Panel: put detergent into detergent box by pulling out Drawer. 2.Control Panel: manipulate washing machine with the panel. 3.Knob: revolve this knob and select washing program accordingly ( cotton, synthetic, wool) can be selected circularly. 4.Function Button: achieve functions of speed selection, temperature selection etc.
2.INTRODUCTION OF PRODUCTS Programs corresponding with the encoder knob My Cycle Spin Only Cotton Intensive Drain Only Cotton 60 Wool Cotton 40 Delicate Cotton 20 Mixed Quick 15' Synthetic ECO Wash Sports Rinse & Spin Baby Care Function of basic Cotton Intensive To increase the washing effects, main additional washing time is increased.
2.INTRODUCTION OF PRODUCTS 2.7 Function of safety guard 2.7.1 Function of avoid overflow When the water level is up to the abnormal height in the drum(the set warning level), washing machines will automatically switch on drainage pump to drain by pressure switch, even if the inlet valve failure which can not stop the inflowing water, the washing machine will not be in the overflow.
2.INTRODUCTION OF PRODUCTS 2.7.4 Function of auto-balance 1. This function will start before spin and after drainage. 2. Drum reverses the speed of 50 rounds per minute in the first six seconds. 3. In the next 10 seconds, the rotational speed from 50r/m to 100r/m slowly. 4.
3.INSTALLATION 3.1 Select the location 1. Washing machine must be placed in the formation, firm, dry and well-ventilated places. 2. Washing machine need a certain space and the shortest distance from the wall is not less than 12cm generally. 3. Don't place the washing machine in the condition of freeze-easy. 4.
3.INSTALLATION 3.4 Connect inlet pipe Connect the inlet pipe as indicated in the figure. 1.Connect the elbow to tap and fasten itclockwise. 2.Connect the other end of inlet pipe to the inlet valve at the backside of washing machine and fasten the pipe tightly clockwise.
3.INSTALLATION 3.7 Installing and checking items 1. Check whether remove transport bolts or not. 2. Check whether the socket is installed and properly earthed. 3. Check whether this machine is level or not. 4. Check whether inlet pipe/outlet pipe is wringed or not . 5.
4.OVERVIEW OF MAIN COMPONENTS 4.1 Top cover kit 1. Parts component Top cover is made up of hyperbaric plate, top cover-f and top cover-b. Both top cover-f and top cover-b are ABS materials. Front of top cover lock to the panel support of this machine's cabinet, and back of top cover fastnesses to the U-type backside of cabinet with screw.
Control panel kit consists of control panel, dalle,spring, button,light transferrer etc. As the key apparance part of washing machine, control panel's appearance and quality have direct influence on costumers. Midea washing machine is known as fashionable and compact appearance. The material of control panel is the slap-up and splendid ABS material and its mold is specular polished.
4.OVERVIEW OF MAIN COMPONENTS 4.6 Cabinet kit The material of the cabinet is PCM colorful metal, and cabinet fold and reinforce are fixed by TOX riveting technique, the panel support is fixed with cabinet with screws. Fixed in the top of the cabinet through TOX riveting technique, left and right-up reinforce reserve spring hole, pressure switch assembly hole, cable channel hole and screw hole of the PCB board support.
The tub material of Midea washing machine is well property and improved PP which is high intensity, heat-resistant and high rigid. As a good heat guard, PP ensures this machine save power and improves its washing performance in a sense.
Generally, household water pressure is less than 1MPa, and practically the water pipes of Midea washing machine could stand the pressure of 2MPa in one minute not dehiscence, not deformation, and bearing 4MPa pressure not burst.
4.OVERVIEW OF MAIN COMPONENTS 4.11 Inlet system 4.11.1 Pressure switch Working principle Mechanical pressure switch have two main components that is balloon and electrical structure. The balloon is fastened sealedly on the pressure switch with hose clamp and the end of balloon is connected on the bottom of tub using press chamber, plastic pipe. During flowing water, the bottom of tub is firstly submerged and its space linking the balloon is closed.
4.OVERVIEW OF MAIN COMPONENTS 4.11.2 Inlet valve Working principle of inlet valve Inlet valve has two main components: One is the 220V winding which Set in the injection molding nylon colophony Pa66 outside cylindrical cavity and there is an iron core inside of cavity.
4.OVERVIEW OF MAIN COMPONENTS 4.11.3 Detergent box kit Detergent box kit is made up of detergent box, Detergent box-up and Detergent box-middle. At first, Detergent box-up and Detergent box-middle are pieces of plastic absolute. They are connected and produce many flume as the channel of water flow to weep away the detergent in the box.
4.OVERVIEW OF MAIN COMPONENTS 4.12.2 Drain pump As for the up-drainage washing machine, the drum washing machine need drain pump to provide the force. The drain pump head is generally 1~1.5m, tonnage is 24L/min. Drain pump is made up of motor, body, impeller, blower fans.
Gasket is injected molding with EPDM which has many properties such as the high temperature, corrosion resistance, anti-aging. The gasket of Midea washing machine has processed using advanced technique and it has very well performance and beautiful color. What is more, gasket achieves the goal of flexible connectivity between cabinet and tub.
4.OVERVIEW OF MAIN COMPONENTS ℃ power, the most power of heating at 90 is in the range from 1800 watts to 2000 watts ℃ and 1000 watts at 60 . The heater can't heat without water, so firstly the heating function will start only user selects the heating procedure, and secondly heating function is in some special procedure to avoid unreasonable heating, and thirdly when water level is up to the set level, its function will operate.
4.OVERVIEW OF MAIN COMPONENTS 4.19 Motor 1. Summary of motor As the driving components, motor drive the drum during washing and spin. Currently, the motor of drum washing machine usually have two-speed motor and series motor. 1) two-speed motor is the running capacitance of single-phase AC asynchronous motor. Stator of the three-phase AC motor embedded in the three-phase windings 120°.
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4.OVERVIEW OF MAIN COMPONENTS The structure of single-phase series motor decides it can use not only alternating current but also DC. To predigest its circuit and reduce cost of this machine, it is usually to use AC practically. Between the exciter windings and the armature windings are in series one single-phase power supply.
4.OVERVIEW OF MAIN COMPONENTS 2. Main parts and structure of motor Stator and rotor Stator has rotating magnetic field, including stator windings, the core and upper/lower cover for fixing it. Stator windings is the high strength polyester enameled wire enwinding the core which is sheeted with the silicon steel about 0.5mm thickness by riveting and welding.
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4.OVERVIEW OF MAIN COMPONENTS temperature-testing resist value; when the control panel makes sure that the water temperature arrives the set temperature, it cuts off the heater and stop heating. The control of unbalanced load during spinning When the washing machine is running the spinning program, if the clothes in the drum are put unbalanced or gravely out of center, the washing machine will vibrate greatly, so the control panel needs to adjust it.
4.OVERVIEW OF MAIN COMPONENTS 4.22 Sub-harness assy Connecting motor (Detailed in PCB connection) 4.23 Bill of damageable parts Name Name Temperature sensor Inlet hose Door lock Absorber Heater Inlet valve Door hook Tub outlet hose Filter cover Outlet hose Door glass Drain pump Door handle Drive pulley...
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture 1 Undo the back cover Undo two screws fit between back plate and cabinet, and then pull out the back plate 2 Undo top cover ① Undo 2 screws fit between the top cover and back cabinet ②...
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture Undo the lower panel ① Open the filter cover, release the screw on the lower panel. ② Turn the washing machine back at an angle, pinch the clasp ,and push it out. 5 Undo the door lock ①...
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture ③ Undo five screws in the front plate. ④ Put the front plate up to the clasp of the front plate away from the loading holder, and then take off the front plate. 7Undo the facade counterweight ①...
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture 9 Undo the PCB panel Undo the top cover and control panel(methods as followed). Undo the detergent ① Undo the top cover and the control panel methods as followed ② Release the hose clamp and pull out the inlet hose.
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture ③ Release the clamp fixing the inlet valve and the inlet hose, and then pull out the inlet hose. Take out the inlet valve and plug. Pay attention to the position of the plug so to connect a wrong circuit next time 12 Undo the pressure...
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture 14 Undo the upper counterweight (4.5kg counterweight) (4.5kg counterweight) ① Undo the top cover (methods as followed). ② Remove three screws fit on the upper counterweight and then pull out the upper counterweight.
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture ③ Nip out the clamp between the outlet hose and the drain pump, pull out the outlet hose. ④ Loosen the screws fitted on the drain pump, and then pull out the drain pump.
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture 20 Undo the door glass ① Open the door, remove two screws fixing the hinge and front plate, and then remove the door. ② Remove six screws on the inner door. ③ Remove the outer door and the inner door with special tool.
5.UNPACKING WAYS OF MAIN PARTS Operation step Picture ⑤ Remove the screws fixing the front and rear tub, and then remove the tub. ⑥ Remove the inner drum kit. Airproof Ring 23 Undo the absorber ① Lift out the outer tub kit (means as 21 above).
6.TROUBLESHOOTING During the failure diagnosing and changing components, please do it as following: 1)There is some static harm to the electrical parts from colophony in the washing machine POWER SUPPLY PLUG or humans. So it is better to eliminate the potential static by grounding the humans or touching the plugs.
6.TROUBLESHOOTING 6.3 Schedule of failure alarm & its disposal The alarm display is as below : Display Solution Description Reason Open the tap or wait till Tap is not opened or water the water supply Water injecting flows too slowly. becomes normal.
6.TROUBLESHOOTING 6.4 Electrical parts working & testing principle 1. Inlet valve Working principles: A piece of iron core blocks in the inlet valve, and one side of the iron core is the push exerted by spring. When the power is turned on, the winding in the valve will generate a force to pull the iron core up, and then the inlet passage is smooth and the water flow in the drum under the household...
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6.TROUBLESHOOTING 2. Pressure switch Pressure switch, which use the water pressure to control its spring, connects different control circuit through contacting different contractor. Pressure switch has two groups of pressure control point: point 1 connects point 2 in normal state without water, when the water level is up to a certain value, point 3 connects point 1 under the water pressure, providing power to the heater...
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6.TROUBLESHOOTING 3. Door switch Function: There are three connection in the door lock, 1 and 3 provide 220V voltage to the PTC, when the door is close and power is on, PTC will be distortional, then push the middle spring, the points 2 and 3 connect with spring provide power to the peripheral load (motor, pressure switch etc).
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6.TROUBLESHOOTING 4. NTC and heater ℃ ℃ The normal working range of NTC is -7 to 105 . The higher of the temperature, the lower the NTC’s resistance value. While the heating temperature will be tested through testing the NTC’s resistance value. NTC is inserted in the resistance’s flange, which seal ring guarantee the airproof quality.
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6.TROUBLESHOOTING 2) Take off the filter cover and check whether the impeller is blocked, clean up it and then assemble it. 6. Filter In order to decrease the inter-interference between the washing machine and the power grid, L2 and the power grid’s L connector, N4 and the power grid’s n connector, U1 and washing machine’s L connector, U3 and washing machine’s N connector.
6.TROUBLESHOOTING 6.5 Service Mode Before entering into service mode, make sure no water remains in the inner drum, if not, select drain only program to drain them out. Turn on the machine and press Delay Temperature in proper order for 30s to enter into service mode.
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6.TROUBLESHOOTING 6.5.8 Inlet valve checking (t08) ) Enter into service mode, drain out the water, LED displays “uLt” ) Press Delay button, LED displays “u2”and switch on the main wash inlet valve for 10 min. 3) Press button, LED displays “u1” and turn off the main wash inlet valve and switch on Delay prewash valve for 10 min.
6.TROUBLESHOOTING 6.6 Fault tree Maintenance non-heating malfunction Non-heating Choosing new heating Whether to set up temperature non-heating Whether the pressure switch is well or not Whether NTC is short Change NTC or open circuit Whether the connect Reliable connection is well Whether the heater Change the heater is well...
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6.TROUBLESHOOTING 2. Door non-locked & its maintenance Door non-locked Whether the door is Close the door correctly closed correctly Whether push the Push the start button start /pause button to to start the program start theprogram The door Whether the voltage lock invalid and should between harness 1 and...
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6.TROUBLESHOOTING 3. No water inlet or water inlet overtime No water inlet or water inlet overtime Whether press start/pause button Push start/pause button after choosing the program Whether the door Door lock is invalid and Change main board is closed correctly should be replaced Whether door Whether the voltage...
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6.TROUBLESHOOTING 4. Heating beyond the setting temperature its maintenance Over heating Whether NTC is Change NTC short circuit or open circuit Whether the connection is well Change the control panel P.58...
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6.TROUBLESHOOTING Maintenance of non-drain or drain exceed the setting time Non-drain or overtime drain Whether it is in Push start/pause button the state of pause Whether the Close the door door is closed The means of detecting door switch refers to the paragraph of "no water inlet".
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6.TROUBLESHOOTING 6. Water inlet overflow malfunction maintenance Water inlet overflow Whether the drain Hang the hose well hose is hung up Whether the water hange the inlet is in without power inlet valve Whether the gas pipe Change or revive or the connection is the gas pipe leaking or deadlock...
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6.TROUBLESHOOTING 7. Drum non-rotating malfunction maintenance Drum non-rotating Whether the door Close the door is closed correctly Whether the door Change the door lock lock is well Waiting inlet or inspect Whether the inlet overtime water inlet is correct malfunction Whether the pressure Replace it...
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6.TROUBLESHOOTING Maintenance water inlet and water outlet at the same time Water inlet and water outlet at the same time Whether the drain hose Hang the hose well is hung too low Whether the washer is Normal phenomenon disposing the foam in the drum Change the control panel P.62...
6.TROUBLESHOOTING 6.7 Service tools Tools for assembly and unpacking 10# 13# List Suitable kit Tools Number Heater 1 ( ) Motor ( ), counterweight ( ) Sleeve spanner Drum tub assembly Strap screw Adjust pulley screw leg and undo transport bolts Spanner Assembling or auxiliary function Pliers and pinchers...