In detail: DIY blender repair chopper from a real master for the site my.housecope.com.
A blender is a multifunctional household appliance that is found in almost every kitchen. This is a convenient device that can replace several devices at once. With its help, grind, mix, whip products. The design of blenders is simple, so they are quite reliable, but even the most reliable equipment fails. Consider how to disassemble an immersion and stationary blender, find the cause of the breakdown and do the repair yourself.
All blenders can be divided into two types - stationary (desktop) and submersible (manual). They differ in design and method of operation, may have different nozzles and additional functions. To repair a stationary or immersion blender, you need to understand the features of its device.
Manual models are electrical appliances on a long handle with a cutting nozzle. They are lowered into a bowl with products that need to be crushed and mixed, they press the start button and hold until the procedure is over.
The undoubted advantages of submersible models include compactness. The instruments are easy to disassemble for cleaning, plus they require a minimum of space for storage. Blenders with a large number of attachments are versatile and perform many food preparation operations.
The disadvantage of submersible structures is only one, but significant. During cooking, the device has to be held in your hand while pressing the start button. If you have to do this for 1-2 minutes, the hand gets tired and numb. Such a device is not suitable for frequent use, because. Doesn't handle large quantities of food well.
Video (click to play).
Making soup with a hand blender
Stationary models look like food processors and often perform many functions. They are bowls with rotating knives fixed at the bottom. Such a device is installed on the table, it is not necessary to hold it with your hands during operation. It is able to grind a large portion of food at a time, copes with mixing cocktails, batter.
Desktop models also have disadvantages. The hostess has to allocate quite a lot of space for storage and installation. In addition, some stationary blenders chop vegetables poorly: they either grind into crumbs or remain large pieces. The advantages of desktop structures include the fact that they are sometimes easier to disassemble and repair with your own hands than submersible ones.
Although the principles of operation of submersible and stationary blenders are similar, there are still differences due to the different design of the devices. In all models, products are chopped with knives, but in desktop appliances, bowls also perform an auxiliary function.
The knife of the stationary appliance, located at the bottom of the bowl, rotates and cuts the products. With an increase in speed, the crushed mass is mixed, rises. The walls of the bowl expand upwards, so small pieces slide down the walls, and large ones fall into the center - to the knives. It turns out that the crosspiece pulls down the pieces of food and throws the already crushed mass to the walls of the bowl.
It is not uncommon for a blender to be considered broken if it does a poor job of grinding. But it happens that the problem is not in breakdowns, but in the low power of the electric motor. Sometimes it is enough to add a little liquid to the bowl to make the work of the knives easier.
If the model is powerful, then such deviations in operation can indeed indicate malfunctions, for example, a blunt knife, a broken speed switch, etc. In some cases, problems with the bowl may be the cause of poor performance.
Stationary model device
In submersible structures, collector-type electric motors and fuses are usually installed that turn off the device in case of overloads. Frequent breakdown is the burning of current-carrying parts, therefore, when malfunctions occur, the contacts “ring out” first of all, rotating the shaft manually.
Care must be taken when using manual devices: they are not suitable for kneading dough and other thick products. The motor may not be able to withstand the load. Repairs will be expensive. However, there is good news: often women's hands get tired of holding the equipment before the engine has time to overheat.
Many models are equipped with speed switches. This is a very convenient feature that expands the capabilities of the hostess. But if the engine does not cope, then the working device can escape from the hands, which causes mechanical failure.
Immersion model device
In submersible models, the power cable often fails. This is the reverse side of the main advantage of such devices - mobility. The hand blender is often turned on and off, transferred from place to place, which leads to cord kinks, incl. critical.
Unstable operation of the power grid is also a risk factor. During power surges, motors often burn, printed circuit boards are destroyed. Often it is necessary to replace the knife, repair the nozzle, the speed controller. In desktop appliances, liquid may leak into the nozzle drive, the bowl snap mechanism may break.
Immersion Blender Repair
Consider how to check the performance of individual components of the structure:
If the blender does not turn on, first of all check the presence of current in the electrical outlet. Before disassembling the device for repair, you need to make sure that there are no power problems. The socket is checked using a tester or by connecting another electrical appliance to it, which has an accurately working cord.
If there is current, but the blender does not turn on, check the power cable and fuse. Repair in this case is reduced to the replacement of defective parts with new ones.
Overloading may cause the motor to burn out. In addition to problems with performance, such a breakdown gives itself the smell of burning. Sometimes the device can be repaired by replacing the brushes yourself, but more often you have to take the blender for repair to a service center or buy a new one.
When the elements of the printed circuit board burn out, a short circuit occurs. It is necessary to disassemble the equipment, inspect the board, test and, if necessary, re-solder the faulty elements.
If the gasket is leaking, then it must be replaced with a new one, because. liquid can get on the electric motor and cause a more serious repair.
Housewives often encounter a situation where the blender has stopped and the knife is not spinning. It happens that the knife is spinning, the engine and the speed switch are working, but when loading products, the device runs “idle”, without grinding them. In many cases, repairs can be done by hand. Let's figure out how to do it.
Scheme of the device of a stationary blender
(CM: make a screen of the 1st picture with the name of the parts)
Before disassembling the blender for repair, you should carefully read the technical documentation. Disassembly instructions may be included with Bosch, Philips, Scarlett, Polaris models. It is best to follow the manufacturer's recommendations. Otherwise, there is a high risk of permanently breaking the device.
For disassembly and repair, you will need the following tools:
a flat thin screwdriver (if such a screwdriver is not found, it can be replaced with a narrow knife);
long screwdriver;
pliers;
a magnet to get small parts if you can’t remove them with tools;
superglue or any other reliable adhesive composition, with which you can restore the integrity of the seams if they are damaged.
Do-it-yourself blender disassembly procedure:
Remove all screws, remembering or marking their locations.
Remove all items that are possible.
Note! Some craftsmen offer a more radical disassembly option: a narrow screwdriver or knife is inserted between the body and the casing of the device and the weld is knocked down with a precise hammer blow. This method is only suitable for non-collapsible models, and superglue is required for their reassembly after repair.
Parts that could not be removed should be carefully examined. They can be fastened with latches. In this case, they can be removed by depressing the latch locks.
When the case is disassembled, you can begin to check the performance of parts and repair.
The most common models of Scarlett ("Scarlet"), Vitek ("Vitek"), Polaris ("Polaris"), Philips ("Philips"), Bosch ("Bosch") are usually disassembled, so they can be repaired by hand, replaced nozzles. Consider in what cases self-repair is possible.
Knife replacement. If the knife is blunt, it can only be replaced, because. it cannot be sharpened. New knives are sold in specialized and hardware stores. To replace, remove the old part by wrapping it in a towel and unscrewing it. After that, put on a new knife (it may differ in appearance from the old one), fasten it.
Important! Sometimes you can buy a new knife complete with an oil seal. It makes sense to replace both parts at once. In some stationary models, the knife cannot be removed from the bowl, because. she is not broken. Then there remains only the option of a complex replacement of the bowl, knife and gland.
Knives old and new
Speed controller. In stationary models, it may be difficult to check the switch, because. often there is a function of blocking the inclusion without a bowl. By the way, the problem of stopping the operation of the device is also associated with blocking. If you suspect a malfunction of the speed switch, you need to unsolder it, check each position in full, and repair it.
Stop work. If the device does not turn on, the first step is to check and, if necessary, replace the cord. If it turns on and buzzes, but does not work, then you should disable the lock. Inoperability when the lock is released most often indicates a burnout of the motor winding. It can be replaced, but it's an expensive repair, so it's often more cost effective to just buy a new blender.
Note! The problem may lie in the printed circuit boards. It is worth inspecting the capacitors and resistors. If a short circuit occurs, then it is better to give the device to specialists. In many cases, damaged electronics cannot be repaired or the cost is too high.