We discuss today stationary mixers. Devices evince advantages, disadvantages. Globally stationary mixers are used to process large volumes of product, avoid confused units with hybrid models: pen, equipped with a motor, plus a bowl of grinding products, shredding. The advantage of the absolute standard desktop devices is considered a great time. Housewives own mixers burn engines as inside not provided protection against overheating. Stationary models are fitted with speed regulator can not say: we see just the engine. Mixers repair their own hands devoid of difficulties managed to get hold of spare parts.
Apparatus stationary mixer
Self Repair mixers requires a general knowledge of the internal device. Manual models contain just inside the engine, stationary harder. Consider mixer repair their own hands.
Reducer stationary mixer
Impressive part of the stationary mixer looks reducer. Inside the lid on the front of the rod bolts fastened oars aluminum or plastic cover that hides a set of gears, filled with grease. Pay attention to the complexity of the drive, to pay due attention to maintaining the gear in good condition and can not be repaired, it is necessary to change gears, seal and bearings. Briefly list the entrails:
- The main shaft is provided with a drive pinion, chosen pin.
- On top there is the pressing inclined gear with profiled cut-pin, fixed to the shaft seal ring.
- The drive gear in contact with the transmitting side, directly move the motor shaft.
- Inclined gear pair is pressed against the inclined side, adjust screw heads stationary front part of the mixer, if necessary. Would eliminate the backlash, adjust the vertical position of the paddle.
- Finally, the lateral transmission gear formed of two wheels seated on the same shaft. It will reduce the speed of rotation, while increasing power.
Only special formulations used for lubrication. Regular high speed mixer operates, jam drive - breaks the casing, the pinion will fail.
Lateral drive gear is suspended by two bearings, compacted design on each side washers. So that the oil is not filled planetary gearbox, shaft planted with little interference. Disassemble easily knocked out of the seat soft hammer (mallet). You mentioned planetary gear. Case inside which gear shaft transmits the rotary motion around gear provided with a paddle. Allow the blades to turn, revolves around the drive shaft center.
It is appropriate to describe the correct setting paddle position. Head model stationary mixers is thrown back, rising from the cup. In the loop from the front side of the small screw, which is adjustable by twisting position paddles. It is important, because stationary mixer usually comes with a bowl. The paddle must not touch the material of the vessel, the clearance avoid leaving too much. Americans are used to adjust the dime (10-cent coin). Russian standards offer ruble. The coin is placed on the bottom of the bowl, low speed turns. The paddle should sometimes lightly touch the coin. Adjust the height of said rotor.
There is a vertical clearance - check the hand off, twisted by screw the front part of the head of the stationary mixer. The operation required for certain after repair, inclined gear (at least one) are on the gear housing.
The engine of a stationary mixer
Under the hood is a typical commutator motor, the engine speed is governed by the amplitude of the applied voltage. The power supply simultaneously a control circuit. Decorates charge pulse generator, a voltage controlled shaft rotational speed sensor. At the slightest deviations from the preset parameters, the device changes the pulse repetition frequency governing the base of the power transistor. Impressive aluminum radiator will find the item on the electrical circuit board without hassle.
Input circuits store network filters, chips give zener voltage, the power transistor running the load formed by a pulse transformer, a choke, the output voltage is rectified, filtered. Determines the amplitude of the shaft rotation speed of the commutator motor. Voltage is applied to the winding and brush disposed in a horizontal plane at the sides. To replace - two screws adorn the body casing. Stationary mixer is disconnected from the network, a screwdriver unscrew the plastic plugs. Inside are springs with brushes. Strongly frayed Graphite - purchase, set new ones. Do not hesitate to undermine the brush to the dimensions of the mounting holes, does not harm the proper operation of the device.
Speed control is performed thyristor circuit to the feedback chain of the level of arcing. The engine manifold, check the serviceability without any problems. You need to ping each winding. First stator, then the rotor. In sum, to make extremely simple:
- Disconnect the power-control board two wires feeding the motor windings.
- Prozvoniv resistance between the contacts.
- Crank arm shaft to the next section header.
- Prozvoniv resistance between the contacts.
- Repeat the operation for all sections of the reservoir.
Resistance in each case are, in the tens of ohms. There is a value of the order coma - requires careful further study. rotor winding is almost impossible to recover, with the stator recommend to tinker. Determine the winding direction, thickness, wire type, number of turns. In just a few hours you will be able to wind one coil manually exercise due patience.
The control board engine speed
Kneading paddles effort impermanent. Hesitate to take action - mode of operation of the commutator motor becomes antsy, will adversely affect the life of the appliance, be annoying, frightening mistress, test quality is mediocre. In order to stabilize the mode of the engine is provided with a tow speed. Normal working speed change idle without test - only begins kneading, speed walk. True output indication of sensor failure, the clock pulse generator control circuit. Check out the first simple:
- Remove the cover.
- Disconnect the sensor from the circuit board control. Locate the connector with three wires.
- Carefully avoiding electric shock, turn on the stationary mixer into the wall socket.
- Including the first speed.
- Perform measurement sensor output voltage.
- Repeat the procedure for the available speeds.
Indications each time new. Conditions performed - further verified supply circuit / chip control pulse generator. Finally allowed to connect a voltmeter across the engine and remove the tension there, if the motor speed makes hardly a problem is localized.
Repairs can be carried out in the usual way. Often visually observe the burnt elements: blacken, contacts, the body melts. Spoiled swell capacitors. Electrolytic on the upper face of the cylinder with a cross-shaped groove. In case of failure the capacitor is bent outwards. Routine is exfoliation installation. Check the integrity of the track.
The main types of faults are listed. Break times microswitch. Speed regulated speed manual contactor. Disconnect from a stationary mixer board power management, rang at each position. And it is necessary to measure the insulation resistance is at least 20 MW. Done for a simple reason: incorrect filing commands the power card, stationary mixer control will cause unpredictable results. Long possible to find fault where there is no failure, when it is easy to understand the reason at the beginning.
mixer apparatus is supplemented occasionally fuse. Clearly, you should start here. Differentiate fuses, current is passed only in case of failure of other elements of the board and those that are included in the motor circuit. In the first case indicate the objectives of eliminating failure in the terminals include light bulb - is lit, the search continues. In the second case described method will not work. Manufacturers are replacing fuses low-resistance resistors, burns in the event of failure of the board members, at the same time limiting the breakdown current, is the best defense. However, the method leads to the known losses in the food chain, for fuses, varistors regulated.
We hope now to repair the mixer with their hands, blindfolded readers will not be a big difficulty. Encounter difficulty - remove the bandage.
