Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Galanz WP700AP17
Summary of Contents for Galanz WP700AP17
- Page 1 Galanz Microwave Oven MODEL: WP700AP17, WP700AL17-K4 Manuał...
-
Page 2: Table Of Contents
INTRODUCTION This Microwave Oven Service Manuał is printed in a loose-leaf format. Each part is divided into sections relating to a generał group of components and each section is subdivided into various parts describing a particular component or service procedurę. The subdividing of the subject matter plus the loose leaf form will facilitate the updating of the manuał... -
Page 3: Safety Precautions
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE A. Do not operate or allow the oven to be operated with the door open. B. Mąkę the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and mąkę... -
Page 4: The Heating Principle Of Microwave
1 THE HEATING PRINCIPLE OF MICROWAYE Microwave is one kind of radio wave whose wavelength is very short, frequency is very high. Therefore, it is called ultrahigh frequency electromagnetic wave. Microwave can heat food mainly result in the mutual affect of the food in the microwave field and the microwave field itself. -
Page 5: The Structure And Working Principle Of Microwwave Oven
Pa=KE fErtg 5 Pa Stands for the power the heated matter adsorbed from the microwave field. K Stands for a constant E Stands for the microwave frequency. f Stands for the microwave frequency. tg 6 Stands for loss angle tangent of the heated matter. Er Stands for relative dielectric constant of the heated matter. -
Page 6: Microwave Generater
Microwave generator is the heart of microwave oven. The quality of a microwave oven mostly depends on the quality of the microwave generator. A microwave generator is mainly composed of magnetron and its power supply circuit, FIG.2-3 is the typical circuit diagram of the present used microwave oven's generator. The power supply circuit is composed of rectifying circuit and filament circuit. - Page 7 2.4.1 Drawing 2-5(a) is the circuit and construction diagram fuse of the door interlock switch of brand, EMN-109 microwave oven. It mainly consists of latch switch (S1, S2), pilot switch (S3), door hook and starting There fixed hooks on the oven door, and opened two pilot switch\ §...
- Page 8 power control function. current is inputted, the time and power motor is always at working condition. At the FIG.2-7, S5 is always seconds to 30 seconds. When power select switch is set at "HIGH", S5 is always conducted, the output of the microwave oven is 700W(full power) when the power select switch is set at defrost position, S5 would conduct for 14.4 seconds, and cut off for 15.5 seconds, and the average output of the oven is 336W.
-
Page 9: Typical Circuit Analyasis Of Microwave Oven
8). It is the most liable place where microwave leakage occurs. Especially, after a long time using, the microwave leakage would enlarge at the hinge and the hook. Anyway, mechanic damage would also cause large amount of microwave leakage. Therefore, the main methods designed for preventing microwave leakage of the door arę as follows: is possible to observe the heating as well as shielding the microwave. -
Page 10: Howto Assemble And Disassemble Microwave Oven Components
off. When cooking, touch the starting switch to power the timer and the power relay. RY1, RY2 closed the power supply to the anodę of the magnetron and the filament, changing the power frequency electric energy to microwave energy, the microwave energy then transferred to the heating chamber for food heating. At the same around and making the food heated evenly. -
Page 11: The Door Combination
Tighten those four screws, please mąkę surę that one of the screws should have a plum blossom shape washer to keep a good earth. THE DOOR COMBENATION To disassemble, Take off the cabinet. Loosen the two six -angle screws of left hinge (up) with a socket wrench (FIG.4 - 2). -
Page 12: The Control Panel And The Door Release Mechanism
Tear off the back protective paper of the window, then the sides of adhesive tape as FIG.4 - 1, and stick it on the window, Tear three right sides protective paper about 10mm, and fix the window in the doorframe as Tear off the adhesive protective paper of the lining and stick it on the door as FIG.4 - 1, slip the hook on the doorframe, and fix the doorframe on the door, tighten it with "+"... -
Page 13: Thetransformer
a magnetron, the meatl lustre at "*" mark should be polished with a sand paper (FIG.4 -7). magnetron vertically, and also tighten the screws of the lampshade (FIG.4 - 8). THE TRANSFORMER. Firstly, do as the 1,2,3, steps at III of this part. Dismantling steps for the transformer: (as FIG.4 -9). -
Page 14: Thecapacitor
Take off the fan from the fan motor shaft as FIG.4 -14, then the fan motor, to mount the fan motor, Assemble the fan motor as FIG.4 - 14. Drip the glue on the "* " place of the fan motor shaft, and f ix the fan on the earthing screw shaft. -
Page 15: Theturntablecombinatiom
take the diodę off. To assemble, Fix the diodę with one screw (pay attention to the polarity of the diodę, refer to FIG.4 -16). THE TURNTABLE COMBINATIOM. To disassemble, 1. Turn the microwave oven over (FIG. 4-17). Take off the two screws which fix the middle base board with a Loosen out the two screws of turntable motor with a "+"- screwdriver, take out the turntable motor and puli out the two wires (4 -17). -
Page 16: The Control Panel Of A Typical Microwaye Oven
(2) Assemble the interlock switch and pilot switch to the switch holder, mąkę surę they arę assembled correctly. (3) Tightly fix the holder with two screws. (4) Check the position of the hook and the switch holder. door to check whether the door is flexible. If it does, back ront door pl and front position of the holder should be adjusted. -
Page 17: Breakdown Analysis And The Meansofoyerhauling
position. (6) Fix the control panel on the oven (FIG.4-6). (7) Pług in the terminal plugs of the PC board. 5 BREAKDOWN ANALYSIS AND THE MEANS OF OVERHAULIHG Before overhauling a microwave oven, you should judge the breakdown and the cause correctly, then you can repair it with corresponding ways. - Page 18 Place a graduate of 275ml water at the middle of the glass tray transformer primary winding of the oven (FIG.5 - 1). Close the door, power set high, time set to 3 minutes, press the starting button to operate the oven. After rectified the microwave leakage measure, measure around the door crack, those hole position of the window and the air vent at four sides of the oven with the próbę...
- Page 19 normal ,then check whether the terminal pług of the magnetron and the capacitor have loosened, if it is loosened, pinch it tightly with a pliers. 5.2.5 THE MICROWAVE OVEN. winding and the secondary winding of the transformer with an avometer (FIG.5 - 10 and FIG.5 - 9). The resistance value of the primary winding should be about 2.2 ohms, the secondary winding should be about 130 ohms.
-
Page 20: Repairing Method Of Several Breakdown
model one. 1. Repair when there occurred large amounts microwave leakage. There arę many factors which may cause microwave door hinge (up) microwave leakage: (1) The door deformed, the hinge loosed or damaged that caused the door can not close tightly. (2) The door pressing cover or the embed piece damaged or (3) Obvious damage or uneven of the oven. -
Page 21: The Characters Reouirements Of Microwaye After It Has Been Repaired
copper filament weaved washer must be placed well, the screws must be twist tightiy. Then turn on the oven and measure again until it comply with the requirement. If the microwave leakage is larger at those hole position of the window board. The oven should be turned off to inspect whether there arę crack among them (fig.5 - 16). If several holes formed a crack, it would enlarge the microwave leakage. -
Page 22: Critical Parts Seryicing
5.4.3 Place a graduate of about 250ml water on the turntable tray. Close the door, power set high, time set 4 minutes (To those 700W microwave oven) to mąkę the oven operating in normal. When the beli of the timer rings, open the oven door, the water should have boiled. - Page 23 PHENOMENON CAUSE REPAIRING MEANS Change a new fuse. The primary and secondary winding of the Change a new transformer. transformer arę short - circuited. Change a new capacitor. When The earthing or the polarity of the polarity of Change a new pilot switch. oven, the lamp is not on, the capacitor is punctured.
- Page 24 The screws which fix the magnetron loosed Tighten the screws The wave guide connection oxidized Scrape oxidized tighten the screws The magnetron copper filament washer is too thin cause the wave guide opening not Thick the copper filament in good earth. washer -eaten eniarged the gap of the door shaft Adjust the hinge to rectify the...