Kitchen extractor fan: repair by own hands

From all 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 these issues.

Extraction device

Repair kitchen hoods begin with a study of her device and search for problems. Air purification takes place by means of an asynchronous motor, it is more often single-phase in the extractor. A converter is provided that regulates 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 blades of the usual screw - they also tighten the air inside. The second type has a slightly different device of blades. They are blades (there are a lot of them). They create a centrifugal force of great power and push the air out.

The extractor is also equipped with a filter, its installation takes place at the inlet of the air flow. The control panel is also a necessary element. Older models often have a mechanical type of control, and modern ones are sensory. All elements are located in one housing, which facilitates the replacement of the defective part.

Differences in hoods

By design features they can be:

- Filters . They work on a coal filter, so their device is the simplest. The cost of such a design is much cheaper than analogs. The principle of their work is to recirculate, that is, they take the air from the premises, clean it and return it again.

- Infertile . In them, the polluted air is discharged into the vent hole to which the extractor is connected. Such a device is more progressive and perfect than the use of a carbon filter. In such an extractor, instead of a filter, a grease trap is installed. Such devices need a real ventilation system. It can already be built into the premises or special guidance is made specifically for the hood.

Possible causes of the malfunction

A kitchen extractor, the repair of which should be made, can simply fail in terms of service life. Especially if she is over 10 years old. In this case, it is advisable to replace it with a new one. But if you bring only the purchased device, you need to find out the cause of its malfunction.

- Violation of the rules of operation. Filters in the hood must be cleaned. At the same time the net 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 there is no cooking process underneath it, but only the cooker is turned on. Hot air from quickly will put out the hood. The correct inclusion should be made before cooking starts for three minutes, and turning off after 15 minutes after its completion.

- Installation is not according to the rules. When installing the hood, follow the instructions and general regulations, otherwise the unit may be damaged earlier.

- Defective wiring. If the appliance malfunctions, first check the RCD.

- A rare case of breakage - a break in contacts. The kitchen extractor, the repair of which is made for this reason, is of Chinese origin.

No light at work

Many housewives include lighting hoods to illuminate the work area, as this is a more economical and rational approach, and there is no need to install additional lighting devices. If the light has ceased to turn on and the cooker hood is faulty, repair is carried out in the following ways:

- Checking the bulb (with frequent use it could just burn out).

- Check the operation of the fan on the hood.

- The cause may be insufficient tension. It can be checked with an indicator screwdriver. If the socket is working, then the cord is checked for continuity.

Weak draft

Such a malfunction, as a weak pull, is much easier to eliminate. For this purpose, grease filters are first checked. Most often they are the reason why the cooker hood is faulty. Repair can be done by yourself. To do this, flush the grease trap. If cleaning filters is not helped, you need to check the draft in the ventilation itself. To do this, use the old proven method with a lit match or lighters. Bring it to the vent hole and look at the flame. It must be tightened into the grate. If this does not happen, you should contact a specialist who will clean the airway.

Loud noise

The cause of high noise, which produces hoods, can be poor-quality assembly in production or cheap materials. Then the thing in the manufacturer and do nothing. But when the firm and quality can not be doubted, the first thing to check the attachment of the hood to the wall. Even a short distance can lead to a strong vibration, and hence the noise that the kitchen hood produces. Repair consists in fixing fastener parts.

Self-repair

If the cooker hood does not turn on, then the first thing to do is check the power circuit. With a working light, it is likely a malfunction in the motor or control circuit. Single-phase motor is not difficult to start - for this, the working and starting phase should differ by 90 degrees on the windings. To do this, you should connect the windings 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 instruction on the motor itself. If the matter is in a three-phase motor, then the windings are connected by a triangle. The instruction on the correct connection must also be on the housing. If the motor is in good working order, it is necessary to check the circuit for voltage. To do this, you need a tester. When the motor is running at a constant speed (about 90%), the cause of the failure should be sought in the control circuit.

Repair of kitchen hoods Krona

Common causes of malfunction of this model are a decrease in the effectiveness of the device due to the fact that it ceases to remove unpleasant odors. Often such a break is associated with a fan, sinning on its inability to absorb air qualitatively. In fact, the reason is hidden in another. If the rules of operation are met, that is, the hood is turned on three minutes before the start of cooking, and turns off after 15, and the odors remain in the room, the first thing to do is to clean the filter. If it's coal, replace it, if it's just a grease trap, wash it. Repair of the kitchen hood Cata is comparable with the elimination of the malfunction of the Krona model. Therefore, if the lighting does not light up on such a hood, you just need to check the light bulb. Most often, the reason is in it. If the matter is not in it, then you should pay attention to the wiring and the serviceability of the switch.

The appliance does not turn on

One of the most popular is the "Krona" model (kitchen hood, which can be repaired by own efforts). If the device does not respond to the inclusion, then there may be several reasons for this.

- Connect to the network. Check the hood fork. It happens that it is not firmly plugged into the outlet. In parallel, inspect the shield for the integrity of the fuses. If everything is all right, then maybe it's the wires. They need to be inspected for integrity. Repair of the cooker hood "Vento" does not differ from other analogues, so you need to perform the same actions as for other models.

- Switch. If there are no visible damages on the hood, the malfunction is searched by the tester. With it, you need to call the power cord, wires and switch. The result of the check will be the conclusion: if the switch is on the switch, and there is no contact, then it is in it. Removing this fault will require replacing the entire fan control unit.

- Electromotor. If the above checks showed the serviceability of their elements, then the matter is in the motor. Repairing the kitchen hood with your own hands is a very troublesome and time-consuming task. Most often such a breakdown requires replacement of the engine, but it can not always be found in a separate sale, especially for imported models.