Of all the kitchen equipment, the hood has the simplest device. Therefore, it is not very difficult to repair it, the main thing is to understand its structure and find the problem. Today's article will be devoted to precisely these issues.
Hood device
Repair of kitchen hoods begins with the study of its device and the search for problems. Air purification is carried out using an asynchronous motor, it is often single-phase in a hood. A converter is provided that controls the speed of rotation and reduces the noise level. The engine is equipped with a fan, which can be axial or tangential.
Axial consists of the blades of a conventional screw - they draw air inward. The second type has a slightly different arrangement of blades. They are scapulae (a huge number of them). They create a centrifugal force of high power and push air out.
The hood is also equipped with a filter; it is installed at the inlet of the air flow. A necessary element is the control panel. Older models often have a mechanical type of control, and modern ones have a touch type. All elements are located in one housing, which facilitates the replacement of a defective part.
Hood differences
By design features, they can be:
- Filtering . They work on a carbon filter, so their device is the simplest. The cost of this design is much cheaper than analogues. The principle of their work is recycling, that is, they take air from the room, clean it and return it again.
- Output . In them, polluted air is discharged into the ventilation hole to which the hood is connected. Such a device is more advanced and advanced than using a carbon filter. In such an extract, a grease catcher is installed instead of a filter. Such devices need a real ventilation system. It can be already built into the room or a special discharge is made specifically for the hood.
Possible causes of malfunction
A kitchen hood, the repair of which should be done, can simply fail according to the service life.
Especially if she is already over 10 years old. In this case, it is advisable to replace it with a new one. But if only the purchased device fails, then you need to find out the cause of its malfunction.
- Violation of the operating rules. The filters in the hood must be cleaned. In this case, the mesh is cleaned at least once every three weeks, but the coal is completely changed every six months. You can not turn on the device if under it there is no cooking process, but only the stove is turned on. Hot air will quickly disable the hood. Correct switching on should be done before the start of cooking three minutes, and turning off 15 minutes after its completion.
- Installation is not according to the rules. When installing the hood, you should be guided by the instructions and general standards, otherwise the device may fail earlier.
- Bad wiring. In the event of a malfunction of the appliance, the first thing to check is the RCD.
- A rare case of breakage - breakage of contacts. The kitchen hood, the repair of which is carried out for this reason, is of Chinese origin.
No light at work
Many housewives include hood lighting to illuminate the work area, as this is a more economical and rational approach, with no need to install additional lighting fixtures. If the light ceases to turn on, and the kitchen hood is faulty, repairs are carried out in the following ways:
- Check the bulb (with frequent use, it could simply burn out).
- Check the operation of the exhaust fan.
- The reason may be insufficient voltage. It can be checked with an indicator screwdriver.
If the outlet is working, then the cord is checked for integrity.
Weak traction
A malfunction such as poor traction is much easier to fix. To do this, first of all, grease filters are checked. Most often, they are the reason why the kitchen hood is faulty. Repair can be done by yourself. To do this, rinse the grease trap. If cleaning the filters did not help, you need to check the draft in the ventilation itself. To do this, use the old proven method using a lit match or lighter. Bring it to the ventilation duct hole and look at the flame. It should be pulled into the grate. If this does not happen, you should contact a specialist who will clean the duct.
Loud noise
The reason for the high noise that the hood produces may be poor assembly at the factory or cheap materials.
Then the matter is in the manufacturer and nothing can be done. But when there is no doubt in the company and quality, the first thing to check is the attachment of the hood to the wall. Even a small distance can lead to strong vibration, and hence the noise that the kitchen hood makes. Repair consists in fixing the fastener parts.
DIY repair
If the hood does not turn on, the power supply circuit will be checked first. With a working backlight, most likely a malfunction in the motor or control circuit. A single-phase motor is not difficult to start - for this, the working and starting phase must differ by 90 degrees on the windings. To do this, windings should be connected in parallel (attach a capacitor to one). It is already included in the engine, so to determine the contacts you need to look at the instructions on the motor itself.
If it is a three-phase motor, then the windings are connected by a triangle. Instructions for proper connection should also be on the case. With the motor working properly, you need to check the circuit for voltage. To do this, you need a tester. When the motor is running at a constant speed (approximately 90%), the cause of the breakdown should be sought in the control circuit.
Repair cooker hood Krona
Common causes of malfunctions of this model are a decrease in the efficiency of the device due to the fact that it ceases to remove unpleasant odors. Often such a breakdown is associated with the fan, sin on its inability to qualitatively absorb air. In fact, the reason is hidden in another. If the operating rules are followed, that is, the hood turns on three minutes before cooking starts, and turns off after 15, and the smells remain in the room, then the filter must be cleaned first. If it is coal - replace it, if just a grease trap - wash it.
Repairing a
Cata range hood is comparable to troubleshooting a Krona model. Therefore, if the backlight on such a hood stops burning, you just need to check the light bulb. Most often, the reason is in it. If this is not the case, then you should pay attention to the wiring and serviceability of the switch.
The device does not turn on
One of the most popular is the Krona model (a kitchen hood, the repair of which can be done on its own). If the device does not respond to switching on, then there may be several reasons for this.
- Network connection. You need to check the exhaust hood. It happens that it is not tightly inserted into the outlet. At the same time, inspect the shield for fuse integrity. If everything is working, then maybe the matter is in the wires.
They need to be examined for integrity. Repair of the Vento cooker hood does not differ from other analogues, so you need to perform the same steps as for other models.
- The switch. If there are no visible damages on the hood, then the malfunction is sought by the tester. With it, you need to ring the power cord, conductors and switch. The result of the check will be the conclusion: if the snakes in the switch are turned on, but there is no contact, then it is in it. Solving such a malfunction will require replacing the entire fan control unit.
- The electric motor. If the above checks showed the serviceability of their elements, then the matter is in the motor. Repairing a cooker hood with your own hands is a very troublesome and time-consuming task. Most often, such a breakdown requires replacing the engine, but it can not always be found in a separate sale, especially for imported models.