How to fix an electric coffee grinder

In addition to electronics, in coffee grinders, parts often cause breakdowns: they become clogged, soured, etc. To clean and check all the contacts at the same time, you will have to disassemble the coffee grinder. This is done quite simply: the bottom is removed, then the screw and the bowl.

Device

All coffee grinders are divided into two types according to the grinding method: millstones and with a rotary screw. Manual and electric are also distinguished, but the latter firmly and thoroughly pressed their mechanical counterparts.

What does a rotary electric grinder consist of:

• case
• metal bowl
• two-, rarely four-blade propeller,
• transmission rod
• motor and wire
• cap.

Both expensive and cheap models are arranged in this way: Bosch, Mikma. Soviet electric coffee grinders were also assembled.

To disassemble them, you need to follow these steps:

1. Remove the cover.
2. Detach bottom. In Soviet devices, it is fixed with screws for a Phillips screwdriver, in modern ones it is usually simply pry off and removed.
3. In the center, tighten the locking screw with a screwdriver.
4. Carefully unscrew the rotor screw with your hand or narrow pliers (in the same direction in which it grinds coffee).
5. Remove the screw and bowl.
6. Remove the main body.

Important
Before disassembling the coffee grinder, it must be disconnected from the power supply.

Millstone grinders are generally disassembled according to the same principle.

Delonghi KG 79:

1. Pry off with a screwdriver and dismantle all turntables.
2. In the same way, disconnect the bottom (it is advisable to get on the 4 stopper teeth).
3. Unscrew the 4 perimeter screws and remove the upper part.

Fiorenzato f64e:

1. Remove the coffee tank (bowl).
2. Select the remaining grains with a spoon, and then with a vacuum cleaner.
3. Remove the grinding control disc (by turning clockwise).
4. Remove the upper stationary knife of millstones.
5. For further cleaning, remove the shock absorbing springs.

Depending on the model and brand, the algorithm will be slightly different, the magazine purity.bigbadmole.com/en/ recommends focusing on instructions for a specific model.

Causes of breakdowns and prevention

The simplest and most common cause of malfunction of any coffee grinder is clogging. Powder, as well as external debris, often gets caught under the screw and gets stuck there, in cheap models - it accumulates inside the case, threatening the motor to overheat.

Sometimes the device refuses to work not because of a breakdown, but because of sensitive sensors. Modern rotary coffee grinders are equipped with fuses that do not allow the motor to start if the lid is not closed completely tight. If coffee powder gets into the grooves for the spikes, the sensors detect insufficient tightness. Such a gap is often not noticeable in the eye.

If the device is not used for its intended purpose, for example, grinding salt or pepper, there is a high probability of locking the rotary screw. Salt also provokes rust, which is not at all desirable. To flush the sleeve and screw, it is better to use alcohol, which evaporates quickly and does not increase the humidity inside the device.

Millstone grinders more often than from clogging, suffer from violations in the electronics. In particular, the capacitor fails - it is completely replaced, if the house has a soldering iron and solder, it is not difficult to choose an analogue in any radio components store.

Analysis of the electrical failure of the coffee grinder Zauber z-490 - in the video below.

There are complaints on the forums that the rotary screw does not loosen. If it is clogged with an axle or rusted, it is enough to drip it with alcohol and leave it for a while. If the plastic base in which the blades are held flattened or otherwise deformed, it will either have to be drilled or a screw / nail should be fused into it and then removed.

Prevention

To avoid problems, just follow a few simple rules:

1. Store the appliance in a dry place, do not wash, only sweep or wipe it.
2. From time to time, clean the device (small ones with a brush or a brush, large ones with a vacuum cleaner and a brush), this is vital for millstone models, semi-professional devices need general cleaning every 2000 servings.
3. Do not exceed the permissible load, this applies to the volume of loaded grains, and the duration of one grinding session. The instructions for most rotary coffee grinders indicate a restriction of 2-5 seconds, after which the appliance needs to “rest” as much time.
4. Use the device only for its intended purpose.

Modern coffee grinders are often more powerful than Soviet ones, but inferior to them in durability, especially when it comes to rotational ones. Millstones are designed for more frequent use, but, as practice shows, they are often brought down by electronics. Today there are many service centers ready to service the coffee grinder, but if you follow the simple rules, the unit will last a long time without repair.