DIY coffee grinder repair delonghi kg 79

In detail: do-it-yourself repair of the delonghi kg 79 coffee grinder from a real master for the site my.housecope.com.

Thank you Sergey!
Finally, now I can find the right grind for espresso!

Thank you very much, Sergey! It helped a lot :-)

Thanks, I did the same.

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Thanks a lot for the article. Very much helped out with grinding.

Thank you very much ha instruction.

remove the upper millstone, disassemble it and put a washer between it and its holder. Set the grind coarser and gradually adjust. No food with disassembling the grinder, the result is about the same

washers used usual for bolts d4, thickness 0.3-0.5 mm, sold in any store for fasteners. After these manipulations, the grind regulator is already going tight to the very minimum, so I set it to about 40%. Grinder namomoloa very little coffee, grind very fine. Set the grind regulator to maximum. The amount of coffee has increased, but the grinding is still very fine compared to what was before.

I used d3 washers, I did not measure the thickness, visually 0.2-0.3 mm, the grinding regulator goes to the very minimum, and not tight. If grind for min, a pressure of 15 bar pushes the water
with difficulties. Well regulated. I'm happy with the result. Thanks!

Thanks more for the article. It helped a lot. Was going to change the coffee grinder

Thank you very much, all hands did not reach. Disassembly and adjustment for a maximum of 10 minutes. As many as 9 clicks until the millstones touch, left 8 clicks, grinding to dust.

Man, thank you very much! I thought that I would have to carry it to repairs because of grinding. But I did everything thanks to your article.

Huge human THANKS.

Thanks for the description! I don’t understand how I managed to turn the gears, but I began to grind very coarsely. Now everything is OK!

Video (click to play).

By the way, the following problem that could be with it:
... protection began to work from some kind of fright. For three years it worked flawlessly, except that the indicator light stopped burning during grinding after about a year, and flashed for a split second and went out, but the quality of the work did not affect. And now the grind turns on for a couple of seconds, then the coffee grinder turns off. So you stand and press your finger every two seconds, grinds, of course, but delivers specifically.
and the solution:
... replaced the encoder 47k275v-x2 (large yellow on the board), works without question.

I hope it helps someone, but I already sold mine along with the coffee maker. I bought a coffee machine.

Thanks for the advice with the Conder, I didn't have to look for a malfunction, the symptoms were the same - I immediately got up after pressing the button, I had to poke continuously.
well, at the same time, I adjusted the grinding to a minimum, as described in the article

The same problem, I will look for a Conder and change it.

Many thanks! It is painted in great detail, and most importantly - photos on the same resource. They do not disappear after six months, as in other places.

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Thanks! It also turned out 4 clicks, millstones were already clinging to the fifth. But, another jamb got out. At the finest grind, now, it starts to idle. Those. feeling that the grains no longer fall on the millstones. You have to take the grinder during grinding and swing it left and right or shake it, then it grinds normally ..

Good day! I just can't remove the coffee amount regulator. Are there any tricks? I'm afraid to ruin the appearance with a screwdriver, I put plastic cards, but no click happened.

Are you talking about this lid that is connected to the gear? If so, take a look at the paws in the photo. Just push hard and pull out. With your fingers. =)

The regulator is the one that was removed from the end with just the paws. And the one with the number of porridge in front, I just can't take it off. In the photo, it is not entirely clear how it is attached. Pry off with a screwdriver? I'm afraid there will be dents.

Hang up, it worked. Thanks! I will continue.

With a screwdriver or hard plastic, gradually in a circle

Sergey, many thanks to you!
Grinding is now what you need. I was really thinking about replacing the grinder.

Initially, I wanted to buy a millstone coffee grinder for flour and cereals - but it didn't work, this coffee grinder began to be capricious and did not work when I put the beans. The millstone came off. Later, I put on the millstone properly - it must be closed, turned towards the lock.

The upper millstone must be turned and closed when you put it on. Then I had a problem that he flew off during work, the grind turned out to be coarser - apparently, I closed it badly, that means.

The grinding came out quite coarse, larger than in the video about this coffee grinder, which I watched! And I realized that even for such a coffee grinder this is not the limit, and I saw that something needed to be done! With a Phillips screwdriver, I tightened the upper nails, the upper millstone bolts, so that they sat deeper and did not "look out". They were a little too loose. These are claims to the assembly, to the manufacturer! It's good that you can do something about it.

As you can see, the millstones are made of PLASTIC. Hard and strong, since he grinds coffee. Screwed in with iron.

The black plastic at the top smells like plastic - but it doesn't taste the coffee in any way.

And here is a photo of the grinding. This is the finest grind that I got after I twisted the cloves, at the smallest mark on the knob adjuster. Perhaps, in some photos, autofocus shows very large. The grinding is not very uniform - there are very small particles, and it is like granulated sugar.

DISADVANTAGES: Again, despite not having the Delonghi name, the assembly is lame, assembled in China, and some have no luck. (A capricious machine because of this.) And there was also the case that the grinding size mark shifted during grinding - this means you need to clean, wash the coffee grinder and possibly hold the regulator during operation.I believe that for almost 3000 rubles you can buy quite a decent machine - so let him work out this money, without any modifications on our part. For example, there is a Vitek Vitek millstone coffee grinder, it is even cheaper by as much as 1 thousand rubles, if not more !! It is necessary to regularly clean the millstones. I don't wash it that often. Wide and high, the dimensions are not small. The same Vitek has a larger knife grinder in size, but smaller than this one.

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ADVANTAGES: One of the cheapest foreign coffee grinders. And by the way, it has a good millstone, a good shape for grinding. I watched a video on YouTube, where an American talks about the shapes of millstones in coffee grinders, what they are - and this shape is very good. What is important, the millstones do not overheat, they grind quickly. Although it is written that the grinder is for whole coffee beans - it is quite possible to pass coarsely ground beans through it again - I tried it. And in fact, when you study this market, cooler coffee grinders cost 5 and 6 thousand rubles. Compared to such prices, it is 2 times cheaper. Amenable to revision.

UPDATE, HOW still made it easy to grind smaller. Here's how else I managed to slightly reduce the grind and approach the grind like salt or fine sand: my grind regulator knob does not fit perfectly at the finest grind, and during grinding I held the knob with my hand at the finest grind, the coffee grinder grinded, and the grind was still smaller.

New! It has been a year since I have been using this grinder. After about six months, or several months, the grind control knob failed, and it was already necessary to hold it. She's spinning. Grinding spots have moved. I corrected everything. The grind is fine and perfect. During milling, the grains are heated. Now I cannot wash the inside of the millstone, unscrew it, but the coffee grinder works stably and well.

You just need to have perseverance and desire to put everything in order.

Modern household appliances are not durable. And if you still use the device not for its intended purpose, then the rate of its failure increases significantly.This can happen with a coffee grinder if sugar and other harder foods are ground instead of coffee beans. But, regardless of whether the device broke down due to improper operation or for other objective reasons, you should not rush to contact the service center. Most likely, it is quite possible to repair the coffee grinder with your own hands.

Today's electric coffee grinders are available in two types: millstones and percussion grinders. The lion's share space in the case the device is occupied by an electric motor - up to 80%. The rest of the area is dedicated to coffee beans. For instance, at millstones the grinder is divided into three sections. The first is filled with a portion of raw materials for processing. In the second, grinding takes place directly. And in the third, finished products are assembled.

V impact type designs installed knives. It is they who grind the grains into powder at a high rotation speed. Sometimes this mechanism is called rotary. And it only has one hopper that holds roasted coffee beans. Processing takes place in it. And the ground raw materials are simply poured into another container. In terms of its structure, such a coffee grinder is very similar to a blender.

Important! All devices are equipped with a motor lock when the lid is open and overheating protection. In many models, an additional pulse mode has been added, which with short engine stops helps when crushing harder products. For example, when you need to make powder from sugar.

Rotary coffee grinders often set a timer... It is needed to regulate the degree of grinding. The longer the process, the smaller the product yield. In millstone structures, this role is played by grinding depth adjuster... To do this, increase or decrease the gap between the millstones. Unequal grinding fractions are needed to prepare a drink according to different recipes.

Advice! To brew coffee in cezve, you need to grind the beans into dust. And for brewing espresso, a coarser grind is needed.

It is not difficult to disassemble the device if you know the diagram of the device. The design of all grinders is almost the same, but the assembly is different for different brands. And the famous Bosch company has two models with different disassembly methods.

It is easy to find people who still successfully use Soviet household appliances. Produced in a country that has not existed for a long time, coffee grinders are not inferior in productivity to their modern counterparts. They will open a list of instructions for the correct disassembly of such devices.

Made conscientiously back in Soviet times ZMM brand coffee grinder you have to disassemble, if not for repair, then at least for cleaning and maintenance work. The sequence of actions is as follows.

Free the knife. To do this, find a slot on the bottom of the case, insert a screwdriver into it and unscrew it counterclockwise.
Using a spanner wrench or pliers, unscrew the plastic nut by half a turn (left or right), which is located immediately under the knife.
Remove the plastic cup holder with the glass.
Remove the metal washer from the retaining axle.
To remove the plate, you must simultaneously press on it together with the blocker and turn it counterclockwise until it comes out of the grooves.
Bend back the retaining spring and release the switch.
Remove the dirt protection washer from the axle.
Move the ring at the bottom of the housing and unscrew the screws securing the electrical cable.
Take out the engine.

Important! When removing the knife, there is a risk of ripping off the slot. After this, further disassembly will be impossible. To prevent this from happening, you must first spray on it from a can of WD-40 and wait a few seconds. This will make it much easier to unscrew.

Completely similar sequence diagram when disassembling another Soviet model - ECMU 50. But modern electric coffee grinder "MIKMA»ECMU IP-30 from a Moscow manufacturer (a subsidiary version of the Soviet prototype), the algorithm is the same up to the fifth point inclusive. Then you need to do the following:

do not remove the bar, but carefully lift and move to the side;
before disconnecting the conductor, you need to push it out of the button body and remove it to the right;
take out the electric motor;
remove the oil seal from the engine shaft;
free the shields from rubber shock absorbers;
remove the spring from the groove inside the device to remove the button;
unscrew the two screws hidden under the rubber ring on the bottom to disconnect the power cord from the case.

Straume 3 is another coffee grinder made in Riga during Soviet times. And here's how she understands you can watch the video:

Probably the easiest disassembly method of all coffee grinder samples. Bosch mkm-6003... The algorithm of actions is as follows: to remove the knife, you just need to unscrew it clockwise, and you can pull out the motor by loosening the power cord and pulling the motor towards you. That's all.With model Bosch mkm-6000 one person can no longer cope. Need outside help or access to a good vice. First, you need to fix the unit in the hands of an assistant or clamp it in clamps so that it is strictly in a horizontal position. Further, with a screwdriver or a probe, you need to pry the bottom in the area of \ u200b \ u200bthe attachment of the power cord. Then, having driven the first screwdriver to a depth of one centimeter, the second needs to grope for the latches and carefully separate them. In this case, you should hold the bottom so that the motor does not fall out, which it presses against. The apparent simplicity of the process should not be misleading, since the main difficulty lies precisely in the latches, the disconnection of which requires a lot of skill and patience.

Basically, all coffee grinders are easy to disassemble. Usually it is enough to unscrew 2-3 screws from the bottom of the case. Sometimes you have to tinker with the latches. But there are also secrets, like a model Bork j700: to get to the printed circuit board, you need to remove the grind switch knob, which is attached instead of the nut with a washer (it is this that needs to be unscrewed). The original opening is also characteristic of the coffee grinder Elmaz... The nuance lies in the fact that you first need to turn the bottom with your palm, and then remove it from the hooks in the body.

Advice! Separately, we can say for the model Vitek 1540... It is not recommended to disassemble it at home. This can only be done by qualified service technicians.

The following will describe methods for repairing coffee grinders that do not require in-depth knowledge. Namely:

the device does not turn on;
knives spin unevenly;
malfunctions in the motor;
break in the power cord;
other typical simple breakdowns.

When the device shows no signs of life, then first of all you should look for a violation of contacts and wire breaks. If the inspection did not reveal a problem, then the reason lies in the electric motor, which can only be eliminated in the workshop, since special knowledge is needed.

Important! When the knives are spinning with sticking, then there is an obvious fault of the burned-out motor winding. At home, for a person ignorant of such matters, rewinding the winding is simply not realistic.

But if the motor works with effort and there is a burning smell, you can try to do without a specialist. Most likely this is due to contamination of bearings or sleeve bushings. To fix the problem, you need to free the shaft and wipe it with alcohol. In case of obvious corrosion, you can treat it with WD-40 or neatly with a sandpaper. For interruptions in engine operation, brushes may be responsible. In this case, cleaning or their complete replacement is required. You can wipe the entire manifold with alcohol if dirt has accumulated on it.

Break points and breaks at the power cord immediately catch the eye. If it is not possible to replace it with a new one, then the wires at the break point should be stripped, re-soldered and re-insulated. There are also cases when, due to contamination of the push mechanism, a blocking failure occurs. This issue can be easily solved by disassembling and cleaning the non-working unit.

Advice! Some grinders (notably the Delonghi KG 79) have a weak link in the form of a capacitor on the electrical board. Over time, it swells up and needs to be replaced with a new one.

In order for the coffee grinder to work as long as possible, you need to follow simple rules of operation and prevention..

Do not leave ground coffee in the device for a long time.
After every grinding need to wipe the inner bowl and knives with a damp cloth.
Do not immerse the device in water when washing, it is better to limit yourself to a wet rubdown.
Machines with plastic enclosures can overheat and fail after long continuous operation. Such failures are frequent with the brands Moulinex and Saturn. If take short breaks in grinding every 20 seconds, the service life of the grinder can be increased.
Need to try to avoid chopping other foods... There is a blender for this.
Should timely change dull knives and millstones... The latter must be replaced after grinding 300 kg of grains, and the former much more often.

Fulfilling simple rules for the care and operation of the device, regularly carrying out preventive work and timely performing minor repairs, you can extend the life of your favorite coffee grinder, which will delight you with many years of faithful service.

Delonghi KG 89/79 is the earliest espresso grinder to replace the discontinued Vitek 1548 Image - DIY coffee grinder repair delonghi kg 79

The Vitek VT-1548 coffee grinder until recently was a kind of starting point in choosing an inexpensive home coffee grinder, which I wrote about in its review, but at the moment it is not on sale. And it remained instead of her to be content with an analogue - a pseudo-grain coffee grinder Delonghi KG 79 or KG 89... The latter differs only in the finish - metal outer panels of the case. And it is she who appears in the photo.

As I already wrote in the review material about choosing a coffee grinder, a pseudo-grinder mill is the minimum acceptable for a carob coffee machine. The cheaper class of knife grinders is only good for Turkish coffee, that is, for a Turk. It is even more difficult for fans of the “alternative” (where a uniform coarse grinding is needed) - even this coffee grinder does not suit them.

By and large, Delonghi KG89 or KG79 are the most affordable burr coffee grinders on the Russian market.... There are, however, and cheaper ones, but these are completely obscene Chinese dairy products that work exactly the same as they cost.

You can choose from a pair of 79/89 solely for the price and appearance, if metal surfaces are important to someone. But I warn you right away that in theory the more expensive Delonghi KG89 is cheaper than the youngest one. And the steel panels of its body, by the way, perfectly collect fingerprints.

If we take apart Delongy 89 or 79 and take a close look at its millstones, we will see an unpleasant feature - teeth and cogs that rise above the main working surface. Unfortunately, it is these teeth (there are 6 of them), and not the notches on the disc itself, that do 80% of the work. Because of this, the coffee bean mostly breaks, crushes like on cheaper knife grinders, and does not grind gently.

However, the remaining approximately 20% of the work still falls on a flat millstone disc, which allows you to get a more or less uniform grinding, similar to the result of a real millstone device.

A regular reader might have noticed that I quoted exactly the same thing that was written in the Vitek 1548 review. This is not surprising, because the millstones are 100% exactly the same. I'm sure they are made at the same plant. Yes, the assembly is in China, it's not scary.

The technical characteristics of the described milk are slightly different from Vitek, but in nuances. In view of the same millstones, the result should be expected to be 95% the same:

Steel flat pseudo-crushed stones, 40 mm in diameter
Although the number of positions on the side dial is not signed at all, in reality there are intermediate values with characteristic clicks. In total, there are 16 degrees of grinding, the positions are fixed.
Dosing regulator (grinding timer) for 2 - 12 portions with intermediate values. In fact - stepless, you can choose very flexibly.
Power 110 W
Bean compartment for 120 grams, coffee hopper for 120 grams
The plastic looks good, without any unpleasant odor.
Cord length 85 cm excluding the plug. Yes, the cord is short, but there is a compartment for the excess at the bottom.

Delonghi KG89 / 79 sells for more than Vitek, which is sad. But the surcharge, in general, can be justified

One could immediately say with an ultimatum that where is the quality of Delonghi, and where is Vitek. But this is the case when Vitek was quite up to par.It happens. It is clear that Delonghi still looks like a class above. She has more strict and stylish, chopped shape, metal finishing in the case of the KG 89 also raises the status of the owner.

More objectively, it is better, and this makes the regulators more convenient. In general, there are two twists on the body, on the left side there is a grind regulator (no values are applied, just from fine Fine to coarse Coarse), in front there is a portion regulator (from 2 to 12). Both of them are made of soft-touch material, pleasant to the touch, not like the bare plastic in Vitka. The grind regulator is much more grippy. There is only one button upstairs, but it is backlit; during the operation of the milk, a soft blue glow comes from it.

The timer, when set to a minimum of 2 portions, grinds until the engine is turned off for 12 seconds. When set for 10 servings, 60 seconds. All intermediate values are proportional.

The final mass of ground coffee is traditionally highly dependent on the grade. But here there are significant differences from Vitka. At the finest grinding (position "Fine") for every two portions of milk grinds about 8 grams (Vitka had 13). On the largest one (position "Coarse") - about 14 grams (Vitka has 20).

This, generally speaking, is not enough. This is the same situation as a real Solis Scala grinder. She also threshed on a fine grind into two portions of 7-8 grams, which is only enough for a single espresso. On a large one, it gave out 15 grams, which is almost the same as Delongy's 14. In this regard, Vitek 1548, as well as Solis's competitor - Rommelsbacher EKM 300, produce more correct packaging.

Please note that these results of my measurements are for guidance. Depending on the grain, it may grind a little more or a little less. But this does not change the dosage conclusion.

The lower compartment for ground coffee is made entirely of plastic and has a lid. To the touch, it looks strong enough, with light impacts on the table, there is no sensation, which is even stronger, and it will crack.

Implemented a switch-on lock without a cover for the bean compartment or the lower hopper. When trying to reach the lower hopper, the grinder shuts off. An inconspicuous limit switch is responsible for this. Opening the top compartment lid also stops. The manufacturer called it Dual Safe - "double protection", but of course there is nothing "proprietary" here.

The speed of rotation of the millstones is not declared anywhere, but it feels like it is at the level of 1200-1300 rpm, the same as that of Vitek. This is quite a lot, but in this class it does not really matter, because the flaws are primarily caused by the structure of the discs, and the speed fades into the background.