DIY electric hand dryer repair

In detail: do-it-yourself electric hand dryer repair from a real master for the site my.housecope.com.

DIY hand dryer repair

In a previous article on our website, you could read about the design of hand dryers and understand that there is nothing complicated about it. There are only 3-4 electrical components in the dryer that can be damaged: the motor, the heating element, the switching element and the electronic board.

If you have a classic type hand dryer installed (the air flow should not be very strong) works, but the air flows very slowly or cold, then most likely the heating element has broken. It is recommended to replace it, because otherwise, your visitors will not be too happy, because the drying time for their hands will grow to 1 minute.

We strongly advise you to contact the service center. If you have a NOFER automatic hand dryer installed, then we are always ready to come to your aid, provide telephone advice, take you to the service center or even arrange for a service specialist to visit your site. If you have a hand dryer from another manufacturer installed and would like to receive a telephone consultation, we are ready to help you too. Call +7 (495) 602-05-85, we will always be happy to help you. If for some other reason you are unable or do not want to contact us, follow these simple instructions:

1) Try to adjust the adjustment accuracy of the sensor, it may be incorrectly adjusted. To do this, you will need to remove the dryer cover and locate the adjustment screws, which are usually found on the electronic board. Perhaps your device is too close to the floor or sink and the sensor may not work correctly due to this installation. This method is only relevant if you have a touchscreen hand dryer installed.

Video (click to play).

If the first step did not help you, it is most likely that one of the three main electrical components of the dryer has failed: the motor, the device, or the electronic board.

2) We recommend that you start diagnostics from the drive device (sensor or button). If your dryer has a power button, check its connection to the electronic board. If you have a dryer with a sensor and the adjustments from the first step did not help you, then you will need to find a device of the same model and try to swap the sensors. If the dryer with the new sensor works, then you just need to order and install a new sensor. As a rule, this spare part is very inexpensive.

3) If after replacing the sensor your dryer still does not come to its senses, then most likely the matter is in the electronic board (the brain of the dryer). To diagnose its breakdown, you will need to do the same operation as with the sensor, namely, find a similar dryer that works and swap the electronic boards. If this step was successful and your drying is working, you will need to replace the electronic board, its cost will be about 30-50% of the cost of the dryer, regardless of the manufacturer.

4) If all the above steps did not help, the engine on your unit has broken down. As a rule, in this case, it is more profitable to buy a new hand dryer.

In any case, it is recommended to contact the service center in the event of a breakdown, even if you yourself were able to determine what was wrong with your drying.

Date: 03.12.2015 // 0 Comments

A fruit and vegetable dryer when it breaks down can bring a lot of grief to any housewife. If the dryer does not heat up, do not throw it away and run to the store for a new one.Today we will try to eliminate one of the most common malfunctions in fruit and vegetable dryers. Repair of a vegetable dryer, as practice shows, can take 15-20 minutes of free time. Go!

Drying Vinis was admitted with symptoms: "The dryer does not heat." This is not expensive drying and the breakdown that caused this problem should be solved simply, there is practically nothing to break.

We disassemble the drying and check the integrity of the heating element.

The open-type heating element is visually intact, the continuity of its conclusions confirms this. Before the heating element, a thermal fuse is included in the circuit, which must also be checked.

As practice shows, it is often thermal fuses or heating elements that are the culprits of such symptoms. In our case, the thermal fuse is faulty.

Instead of a thermal fuse, you can put a jumper and check the drying performance. If everything works fine and the heating element does not overheat, you can blame it all on a poor-quality thermal fuse.

If the air flow is clearly weak and the heating element starts to overheat, then it is worth doing prophylaxis for the fan motor. Just a couple of drops of engine oil on felt gaskets near the bushings can reduce friction in the bushings of the engine and increase the speed of rotation of its blades. Decreased engine speed can also provoke overheating of the heating element and failure of the thermal fuse.

After all the manipulations, the jumper can be replaced with a new thermal fuse and dried.

Schematic diagram of the BXG-200 hand dryer.

Let's notice right away that I don't have a lot of experience with hand dryers. From time to time they find themselves in repair, as a rule, with minor defects, and nothing more. But even these infrequent acquaintances give a big picture, most hand dryer schemes are similar to each other like twin brothers and work on the same principle. Therefore, it is enough to consider one of the representatives of this category of equipment in order to understand how all the others work.

The work of the BXG-200 hand dryer is performed according to the classical algorithm, you need to bring your hands into the range of the sensors to turn on the drying mode. Accordingly, if you remove your hands, the drying will turn off after a while.

Arrangement of elements on the board of the BXG-200 hand dryer.

Photo side 1 of the BXG-200 hand dryer.

Photo side 2 of the BXG-200 hand dryer.

A special feature of the plastic version of the hand dryer is the lack of grounding, in principle.

The power supply has output voltages

- unstabilized + 12V, for powering the relay coil

- stabilized + 9V, for power supply of all logic.

The emitters are made in the form of two LEDs connected in series with the ballast resistor R1 (51 Ohm). The LEDs are switched on in a pulsed mode, the pulses to the LED switch-on transistor are supplied from a generator made on a DD3.2 microcircuit (HCF4093BE). Pulses from the generator and from the photodiode output are fed to the Schmitt trigger DD3.1, then to DD3.3, DD3.4 and from the 11th leg of DD3, the signal level corresponding to the state of the sensors is removed. Usually, the base of the key transistor that controls the winding of the power relay (semiconductor) is connected here. In our case, the DD2 chip (HCF4541BE) is installed, which provides a delay in turning off the fan after the hands leave the range of the sensors. Most likely, the meaning of this delay is to prevent the hand dryer from turning off if the hands accidentally leave the sensor range, in order to prevent the fan from restarting. The signal for the key transistor Q1 (SS8050), which controls the relay coil K1, is removed from the 8th leg of DD2.

BXG-200 hand dryer heating element.

The heater temperature is 40-45C. Protection against overheating of the heater when the fan motor is jammed is provided by a thermal fuse at 150C.The design of the heater avoids damage due to deformation of the elements in case of switching on and off.

Quite a common situation when an urgent repair of a clothes dryer is required. Since modern products are not made of very high quality, such a breakdown can occur at any time. It is especially offensive when this happens immediately after washing, if necessary, hang out damp, clean laundry. It is in such a situation that you can quickly repair the device and solve the resulting problem.

Most of the products for drying clothes on the loggia are made in China. Moreover, it is not done very well. Therefore, it is quite a frequent situation when some elements fail. One of the most common breakdowns of such dryers is the development of a gear, along which the rope moves. This happens because it is made of plastic. Naturally, over time, the wheel will rub and the rope will jam.

The way out is simple if you have a spare analog at hand. In such a situation, the procedure is as follows:

Using the pliers, a metal pin is pulled out that holds the gear.
The defective part is removed from the special grooves.
Instead, a new metal wheel is installed.
It is fixed with the same metal rod.

When checking the functionality, a slight creak may be produced at the moment of friction. In this case, the rod must be lubricated with machine oil. This will reduce metal-to-metal friction and serve as a good lubricant. The use of sunflower oil is not recommended, since it, due to the presence of organic compounds in its composition, can lead to the formation of plaque and subsequent failure of the replaced part.

You can find the necessary wheel in an old sewing machine. Gears in older models were used for winding threads.

Those who constantly use such household items periodically have a question: how to fix a tumble dryer that suddenly broke. In most cases, there are two options for their breakdown. In the first case, metal rods are torn off, which were allegedly "welded" to the frame. Moreover, this phrase is not in vain written in quotation marks. The quality of fixation can hardly be called otherwise, since after six months of operation of the dryer, about 50% of the rods fly off the frame. In the second case of breakage, the legs come off the main body of the product, which does not allow its further use.

Watch the video on how to properly repair a tumble dryer without welding:

There are several ways to attach the rungs to the main frame. The list will start with the simplest, and end with the most difficult mounting method:

Carry out the fixation using nylon ties.
Tighten with wire.
By cold welding. The method is quite simple, especially since the instructions for its use are attached on the package.
Solder with a soldering iron.
Drill a hole in the housing. Bend the tip of the bar about 0.5 - 1 cm downward. Thus, the drilled hole in the frame must line up with the fold. After completing all the manipulations, insert the bent end into the frame and wrap it with electrical tape.
The best quality can be called the connection of the rupture site using conventional welding. However, to restore its normal appearance, the dryer will need to be painted. This method is in the last place in terms of complexity, since not every apartment has an inverter welding machine.

If you decide to weld the torn off place, it is advisable to weld all the joints of the parts at the same time. This will prevent subsequent damage to the dryer, which will inevitably follow.

We recommend watching a video on how to repair a tumble dryer yourself:

If the metal legs of the room dryer break, it will take a little more effort and time to restore the product.There are two ways to get out of the situation. The first is the application of welding. In this case, boil the breakdown site if necessary. It may be necessary to even slightly flatten the tubes with a hammer (if bent). As before, after working with welding, it is advisable to paint the product. This will give it a more respectable appearance.The second method of repairing dryer legs involves replacing them completely. Wooden slats should be purchased from a hardware store (approximately 7 running meters may be required). Saw off 4 segments of the same length, one and a half meters long, make two crosses out of them. Fix one side of the legs with metal plates to the main frame, and in the second make small recesses in which the connection takes place.In order for them to fold, you can use the bolts, the main thing is not to tighten them completely. Cut off 2 jumpers from the remaining meter section of the rail and screw it on with self-tapping screws, one on each side of the legs. With a limited budget and inability to use tools, you can simply saw off the legs of the desired size and fix them to the base with tape or electrical tape.Some DIY home dryer repair methods can be called blasphemous. But the fact of the matter is that the main goal is to reveal the methods of quick self-repair of the dryer on its own with minimal costs. Image - DIY electric hand dryer repair

For more than half a century, electric hand dryers have been performing their essential functions in many places of mass gatherings: in catering establishments, at train stations and airports, in many office buildings, banks, in hotels and more. The equipment of bathrooms with such devices is always up-to-date - they fully comply with the requirements put forward by the sanitary and hygienic services.

Today there are two main types of dryers:

Contact (based on push-button switching);
Contactless.

Non-contact electronic devices are equipped with special infrared sensors. They work when you place your hands under the working area of the device. In some modern models, the degree of sensitivity of the sensor can be adjusted using a special control device.

Non-contact dryers have several advantages: due to automatic operation, significant savings can be achieved on the mechanical motor of this device.

In contact dryers, the mechanism is activated by using a button that turns on the device and it works according to a set time timer. The convenience of such devices lies in the fact that they can be easily adjusted to the operating mode that is most adapted for users (including the temperature of the hot air supply and the operating time).

The dryer body is often made of conventional plastic. However, today you can find devices that are enclosed in a durable metal or aluminum case - the so-called "vandal-proof" option, which is especially relevant for open public places with a low level of security security.

Due to the streamlined shape of many models of devices, they are reliably protected from dust and small foreign objects getting inside.

When choosing a device, it is important to pay attention to its characteristics such as:

Air flow rate (it can vary from 15 to 72 liters per second);
Air jet temperature (usually adjustable from 45 C ° to 75 C °).

When installing the dryer, it is important to ensure that the appliance is at a sufficient distance from the water source. It should be placed no closer than half a meter from the shower stall, and no closer than one and a half meters if there is a shower head in the room, but there are no protective walls.

Would you like to know how to fix a tumble dryer at home? I will share with you how I did it at home in 10 minutes, perhaps if I didn’t have the whole tool it would take more time, or I would buy a new dryer altogether, since they usually cost up to 1000 rubles, for example I I bought my own in Leroy-Merlin, but there are also more expensive and better ones, but everything breaks.

Often housewives, not calculating the strength of the dryer, hang a lot of laundry and they cannot withstand such an onslaught and the soldering bursts. Metal is now made cheap and it bursts easily, this is especially sad, because after washing you want to dry your laundry normally, and not engage in long repairs.

I believe that it is better to fix it once with good quality than to “glue it with tape” and get angry every time.

To get started, let's drill holes where the strings break on your floor dryer, pick up a thin drill to fit the diameter of your string!

In order for our connection to be strong, we need to remove the scotch tape on which you glued the torn strings before and sand them with a sandpaper, file, natfil, or a machine for sanding surfaces.

We drilled holes in the tube, then we make hooks from the knitting needles and insert them into the drilled holes !.

It is also better to bend the tip of the knitting needle about half a centimeter downward. The hole should be in the place where the bar is bent, insert the bent tip into the hole and wrap it with electrical tape, or make it better and solder and paint so that it is like new!

Next, we sand and solder them, pre-treating everything with soldering acid for a better connection!

So that nothing superfluous sticks out and does not prick, we process our dryer well with a file, in the places of adhesion!

Everything is fine, now you can paint it, we use any waterproof paint, I used an alkyd spray paint, but you can use any paint for metal! Ready!

The legs of the dryer also break often, I used a hacksaw, sawed at the junction, straightened the tube until it was even, turned a tube out of solid wood, inserted it into the broken leg of the dryer on both sides, and glued it with tape. It held up well, you can also drill small holes and attach an additional wooden rod inside the leg! The method works! Which one did you use?For a hand dryer to last its full life cycle and operate flawlessly, it needs care and regular maintenance. We have compiled a special instruction that will help you to achieve uninterrupted operation of the dryer, keep it hygienically clean and efficient for many years.Do not use abrasive or solvent-based cleanersOver time, dust and dirt accumulate inside the dryer, which often cause engine breakdowns and negatively affect the hygiene of the unit. Therefore, it should be cleaned as needed. This should be done depending on the frequency of use of the dryer and the location in which the dryer is located. For example, if it is installed in a factory or factory, and not in a regular office, then it will need double maintenance.We recommend using a soft cloth and regular detergent as washing tools. Combined with regular soap and warm water, this should be sufficient. You should also be aware of a number of substances from which your dryer should be kept away:

Alcohol-acid mixtures;

Alcohol / oil based solvents;

Alkaline bleaching mixtures;

Substances based on quaternary ammonium;

Foaming agents;

Bleach or abrasive cleaners.

There is nothing complicated in the process of wet cleaning, just wipe the device from all sides, including the air outlets. The only thing that should never be allowed is the ingress of water or cleaning agent into the ventilation holes of the dryer.After you have washed the appliance with detergent, be sure to wipe off the remnants with a wet towel.Also, for hygiene reasons, it is worth wiping the walls around the machine and mopping the floor around it. And don't forget to make sure the infrared sensors are clean and working without interruption.Replacement of brushes is necessary because as they wear out, the efficiency of the dryer decreases. Dust and various fibers begin to accumulate inside it, which over time have a negative effect on the motor and other working components, contributing to their breakdown.However, they may not need to be replaced for a long time, depending on the type of dryer and the frequency of use.In order to replace or clean the brushes, the device must first be disassembled. Therefore, bring along a set of tools, a soft cloth, a paintbrush and new carbon brushes (if you need to replace the old ones). The actual process of disassembling a dryer often varies from model to manufacturer. However, in the instructions supplied with the device, you can always find a detailed diagram that shows in detail how and in what order to disassemble the device.

Pictured: DUALFLOW PLUS M14ACS hand dryer HEPA filterHand dryers use a special high-efficiency filter similar to that found in vacuum cleaners. It blocks the entry of dust and microbes that settle on the outside of the filter and over time interfere with the entry of air into the dryer. In general, this filter works like a sieve, so it's not hard to imagine the overall picture of its work.It is cleaned with an ordinary vacuum cleaner and soft brushes. If the filter is completely worn out and needs to be replaced, then again you need to refer to the instructions. Replacing the filter there should be a separate item.If you have a high-speed hand dryer installed, then it does not evaporate moisture, but simply blows it into a special container. And if it is completely full, then the dryer simply stops working. Newer models of dryers have an automatic system for draining water into the sewer, but older models require manual emptying of the tank. This should be done about once a month (depending on how often the dryer is used). Another reason for emptying a container of water is due to hygiene, because germs and harmful organisms begin to accumulate in stagnant water. Therefore, it will be better if you wash the container itself with warm water and soap.Tanks are usually installed so that they can be easily disconnected. However, if you still have problems with this, then just refer to the instructions as before. If it so happened that you lost it somewhere, then the manufacturer's website should have an electronic version of this document.The circuit board is the heart of any hand dryer. It ties all parts of the machine together and transmits the signal from the infrared sensors to the motor. Therefore, if the board breaks, the dryer immediately stops working.If you are faced with such a problem, then first you should start buying a new board. It is better to do this with your own manufacturer, in order to avoid the purchase of low-quality products. After making a purchase, you should proceed directly to replacing the circuit boards. If you are not confident in your abilities, then just ask for help from the master. Also, do not forget that if the warranty period has not ended, then the dryer will be replaced absolutely free of charge.One fixed price for the repair of any hand dryer defects. The recovery process may require parts, but in some cases they are not necessary. The master will preliminarily agree on the price of the parts with you. Only after your consent will the equipment be restored. If the cost of parts does not exceed 1000 rubles, then the service engineer makes repairs without approval. The terms are minimal.Courier delivery services to the service center and home visits are only possible for large equipment. After testing the serviceable electrical life, a warranty card, an act of completed work and a check are issued.We present to your attention the data of successful troubleshooting of YUMEDIA customers hand dryers. Find your option by defect, brand, model and you can estimate the possible final price of repair, taking into account spare parts. The total cost may differ in redistribution + -10%, since the price of the manufacturer's part for the current day jumps.Click on the repair you need to find out more.If your defect is in this list, we suggest that you familiarize yourself with it in more detail.Center in Primorsky district:Location:
In TC Cosmos, 2nd floor. Nearest addresses - Prospectuses: Kolomyazhsky, Bogatyrsky, Testers, Korolev; Streets: Parashutnaya, Gakkelevskaya, Staroderevenskaya, Planernaya, Sharova, Dolgoozernaya.Subway station: Commandant AvenueWorking hours:
from 10:00 to 20:00 (seven days a week)Working hours:
Mon-Fri: from 10:00 to 20:00, Sat-Sun: from 10:00 to 19:00Center in the Kalininsky district:Location:
Entrance to the basement, near Magnet. Nearest addresses - Prospectuses: Severny, Prosveshcheniya, Lunacharsky; Streets: Kirishskaya, Toksovskaya, Luzhskaya, Ushinsky, Kirishskaya.Subway station: Civil ProspectWorking hours:
from 10.00 to 20.00 (seven days a week)Location:
On the 2nd floor of the shopping mall "Yugo-Zapad" near the Media-Markt. Nearest addresses - Metro Kirovsky Zavod, Avtovo; Leninsky Avenue, Stachek; street Marshal Kazakov, Marshal Zakharov, Valor.Subway station: Kirovsky plantWorking hours:
from 10.00 to 21.30 (seven days a week)Center in Vasileostrovsky district:Location:
On the 2nd floor in the shopping center "Morskoy". Nearest addresses - Metro: Vasileostrovskaya, Primorskaya; Avenues: Morskaya embankment, Vasileostrovsky; Streets: Shipbuilders, Nalichnaya, Uralskaya.Working hours:
from 10.00 to 20.00 (seven days a week)Center in the Frunzensky District:Location:
on the 2nd floor. FIX-PRICE neighbors. Nearest addresses - Metro: Bukharestskaya, Mezhdunarodnaya; Prospectuses: Glory, Vitebsky; Addresses: Sofiyskaya, Salova, Bela Kuna, Fucik, Budapestskaya, Parisskaya, Turku.Subway station: InternationalWorking hours:
from 10.00 to 20.00Center in Pushkin district:Location:
Two end entrances to the Magnit Cosmetic Shop. Nearest addresses - Prospectuses: Novgorodsky, Vitebsky, Moskovsky Streets: Shkolnaya, Pushkinskaya, OkulovskayaWorking hours:
from 10.00 to 20.00 (Sat, Sun - days off)Center in Krasnoselsky district:Location:
Front entrance with Valor. Nearest addresses - Prospectuses: Leninsky, Kuznetsova, Heroes, Peterhof highway; Streets: Valor, Marshal Kazakov, Marshal Zakharov,Subway station: Leninsky prospectWorking hours:
from 10.00 to 20.00 (seven days a week)Center in the Frunzensky District:Location:
Entrance from the parking lot. 6 steps up. Nearest addresses - Metro: Kupchino, Zvezdnaya; Avenues: Vitebsky, Slavy, Danube; Addresses: Sofiyskaya, Bukharestskaya, Malaya Balkanskaya, Oleko Dundicha, Budapestskaya, Kupchinskaya.Working hours:
from 10.00 to 20.00 (Sat, Sun days off)Center in the Kalininsky district:Location:
Entrance to the Magnet store. Near the ticket office to the right. The nearest addresses are Mechnikov Avenue, Metallistov; Zamshin Street, Fedoseenko, Vasenko, Antonovskaya, Key, Marshal Tukhachevsky, Gerasimovskaya.Working hours:
from 10.00 to 20.00 (Sunday is a day off)Location:
On the 2nd floor of TC "Term". Nearest addresses - Metro: Dybenko, Bolshevikov; Avenues: Dalnevostochny, Podvoisky, Iskrovsky, Tovarishchesky; Streets: Dybenko, Antonova Ovseenko, Oktyabrskaya embankment, Podvoisky.

Working hours:
from 10.00 to 20.00 (seven days a week)Center in the Moskovsky district:Location:
On the 1st floor in the Plovdiv shopping center, near the cashier's area. Nearest addresses - Metro: Park Pobedy, Mezhdunarodnaya, Moskovskaya; Avenues: Vitebsky, Cosmonauts; Streets: Tipanova, Titova, Basseinaya.Working hours:
from 10.00 to 20.00 (seven days a week)Center in Krasnogvardeisky district:Location:
On the 2nd floor in the shopping center Rzhevka room No. 2-07b. Nearest addresses - Prospectuses: Irinovsky, Kosygina, Industrialny, Mentors; Streets: Communes, Leaders, Enthusiasts, Udarnikov.Subway station: BolsheviksWorking hours:
from 11.00 to 20.00 (seven days a week)Center in Vyborgsky district:Location:
In the shopping mall "Parnas" on the 2nd floor, room A-221. Nearest addresses - Metro: Electrosila, Victory Park, Moskovskaya; Avenues: Engels, Suzdalsky; Streets: Basseinaya, Varshavskaya.Working hours:
from 10.00 to 20.00 (Sat-Sun until 19:00)Center in the Moskovsky district:Location:
In the supermarket "Magnet", after the entrance to the left. Nearest addresses - Metro: Electrosila, Moskovskaya; Avenues: Moskovsky, Leninsky, Yuri Gagarin; Streets: Basseinaya, Varshavskaya, Tipanova, Kubinskaya.Subway station: Victory parkWorking hours:
from 10.30 to 20.00 (Sat-Sun until 19:00)Center in the Central District:Location:
Entrance from Saperny lane. Nearest addresses - Prospectuses: Liteiny, Suvorovsky, Nevsky, Ligovsky; Streets: Zhukovsky, Nekrasov, Vosstaniya, Radishchev, Mayakovsky.Subway station: ChernyshevskayaWorking hours:
Weekdays: from 10:00 to 20:00; Saturday: 10:00 - 19:00; Sun: 11:00 - 18:00Center in Primorsky district:Location:
On the ground floor, section 015. Nearest addresses - Prospectuses: Bogatyrsky, Ispytatel, Sizov, Streets: Tupolevskaya, Gakkelevskaya, Baikonurskaya, Staroderevenskaya.Working hours:
from 11:00 to 21:00 (Sat-Sun until 19:00)Center in the Kalininsky district:Location:
In T.Ts. Trade yard Archimedes, 1st floor, room 7A. Nearest addresses - Metro: Polytechnicheskaya, Ploshchad Muzhestva; Avenues: Science, Civil Invictus, Northern; Streets: Vernost, Butlerov, Gzhatskaya, Favorsky, Karpinsky.Subway station: AcademicWorking hours:
from 10.30 to 20.00Center in Petrogradskiy district:Location:
The second floor of the Pyaterochka store. Nearest addresses - Prospectuses: Levashovsky, Chkalovsky, Petrovsky, Dobrolyubova, Kamennoostrovsky; Streets: Zhdanovskaya, Bolshaya Pushkinskaya, Bolshaya Zelenina, Lenina.Working hours:
Mon-Fri from 10:00 to 20:00, Sat-Sun from 11:00 to 19:00Center in the Kalininsky district:Location:
How to get? Shop "Magnet", checkout area, signboard YUMEDIA SERVICE. Nearest addresses - Metro: Ploshchad Muzhestva, Vyborgskaya, Chornaya Rechka; Avenues: Lesnoy, 1st Murinsky, Polyustrovsky, Bolshoi Sampsonievsky; Streets: Kantemirovskaya, Kharchenko, Litovskaya, Vyborgskaya.Working hours:
from 10:00 to 20:00 (seven days a week)Center in Vyborgsky district:Location:
Nearest addresses - Prospectuses: Education, Culture, Artists, Suzdal; Streets: Rudneva, Kustodieva.Subway station: EnlightenmentWorking hours:
For the equipment, please come to Service on Rustaveli 66Location:
Nearest addresses - Prospectuses: Shlisselburgsky, Obukhovsky Oborony, Rybatsky Streets: Karavaevska, Diesel.Working hours:
service center MOVED to Prospekt Nauki 21k1Service engineers of Umedia Service do not recommend repairing hand dryers with your own hands at home, as this often increases the cost of the total cost of repairs in the workshop. For this reason, we do not sell hardware components.Fruits are a source of pectins and vitamins, the consumption of which provides the body with essential nutrients. But fresh fruits are available only during the warm season. You can prepare them for the winter by means of a certain treatment, which involves two options. Vegetables and fruits can be preserved or dried.A fruit dryer is an excellent device that you can build yourself with minimal financial costs. Today the second method is preferable. A fruit dryer is an excellent device that you can build yourself with minimal financial costs.The principle of operation of the dryer is the effect of an increased air flow on the crushed fruit. As a result, metabolic processes in fruits are activated, moisture leaves, and they dry out faster. There are three types of dryers, each with its own device.The construction of a standard dryer consists of 4 main parts:

fan;

hulls;

tray for fruits and vegetables;

electric motor.

The functioning of the solar dryer is based on the penetration of rays through the transparent material and heating the sheet mounted on the back wall. This increases the temperature inside the appliance when the reading can reach 50 ° C. Fruits and vegetables, being in such conditions, dry out. Thanks to good ventilation, moisture is removed to the outside, which prevents the formation of mold on the fruit. A cold air stream enters from the lower side of the structure, it heats up in the body and exits through the upper opening.

wooden case;

pallets for chopped fruits;

transparent polycarbonate cover.

The infrared dryer is a multifunctional handy device. It can be rolled up. This will greatly facilitate storage of the device. It can also be easily transported if necessary. The potential of such a device is 58 ° C, which allows you to get high-quality dried fruits. This device will successfully cope with the heater function.The structural elements of such a dryer are as follows:

infrared film;

case from the box;

transformer;

wiring.

Doubts may arise about the advisability of making a dryer. After all, if the fruits are placed in an ordinary attic, after a certain period of time they will reach the required state. This option does not require effort and financial investment. But it also has a drawback. In this case, vegetables and fruits will attract insects. It is impossible to prevent the occurrence of this situation, since constant contact with air is necessary for the complete drying of the fruits. Accordingly, they cannot be placed in a sealed package.Undoubtedly, you can treat fruits with a special composition so that insects lose interest in them. But the taste properties of the fruit change. In addition, after such processing, the fruits retain chemical components in their structure, and it is no longer possible to call them completely safe.Important! A dryer is the most acceptable way of storing supplies in order to enrich your diet with vitamins for the winter.For the construction you will need a professional tool There are several options for manufacturing a structure. To get a conventional dryer, you need to prepare:

materials for the body. It can be 60 cm x 80 cm plywood sheets or an old refrigerator;

metal mesh;

trays;

a fan with a motor or 2 incandescent lamps with a power of 150 W;

self-tapping screws.

For an infrared dryer you will need:

electrical wire with switch and plug;

foil 100 cm x 50 cm, intended for warm floors;

bituminous and PVC insulation;

2 terminals, 2 eyelets, 2 clips;

soldering iron;

metal bar.

The solar dryer is manufactured using materials and tools such as:

wooden beams;

a metal sheet;

mosquito net;

black paint;

polycarbonate or glass;

lining or plywood;

brush;

self-tapping screws;

level.

Each variation of the design of the drying cabinet has its own characteristics, so making a choice in favor of one design or another is solely your right. Let us consider in turn the procedure for constructing each type of drying device.For the construction of a conventional structure, it is first necessary to prepare the hull. Next, you need to do the following manipulations: If plywood sheets are used, they must be joined. In this case, the dryer is made from an old cabinet. When using a refrigerator, the compressor, freezer and glass wool are removed from it. To complete this work, you will need rubber gloves and tight clothing. Select the item from which the dryer will be made The body part of the dryer consists of one wall. There is no need to install the cover and bottom, since the air flow must freely enter and exit the structure.Therefore, holes must be made in the upper and lower parts of the case.Making ventilation holes Instead of the bottom, a fine mesh metal mesh is used. It can be replaced with the grill grate by removing the handles. Or make the bottom out of an old door.Inside, we trim the walls with insulating material.We fix the guide rails on which the pallets will be fixed. They can be constructed with wooden battens and a mosquito net.We insulate the dryer and attach the slats Next, a fan is installed - it can be removed, say, from a thermal electrical device.We fix the fans to the case Important! If you can't find this part, incandescent bulbs will do. Trays are placed in the upper part of the body. A hook is installed on the door.We connect the device and test the performance.Infrared dryer assembly diagram The process of building such a dryer is quite simple and does not take much time. Lavsan film is used as a heating element. You will also need two plastic crates. All actions are reduced to the following aspects:

We cut the supporting corners and walls so that the products do not come into contact with the heating element.

Cut out 3 bases for holders of infrared parts from cardboard.

Radiation from the heaters comes in two directions. To direct it towards the fruit, you should use food foil, which will act as a reflector.

We glue the cardboard.

The heating elements must be connected to a transformer. The wires are connected using flat connectors, electrical tape and pliers. This method will allow you to do without soldering.

The ends of the wires are connected and crimped with a connector. Tape will help keep moisture out.

When connected on the transformer, 4 connectors are made for each polarity. For convenience, wires of different colors should be used.

Then the whole system is assembled.

The transformer is connected to the network.

This concludes the work.

This version of the device makes it possible to use solar energy to dry the fruit. As a result of this natural process, the fruit retains all its beneficial properties. So, the construction of the structure occurs in this order: The bars are knocked down between themselves and three parts are obtained, from which the frame is further formed. Assembling the frame for the solar dryer Then the shelves are installed. They should be placed towards the sun at right angles. To do this work correctly, the structure is initially placed on the street and the movement of the shadow is observed.Installing shelves in a solar dryer The following step will help you determine where the shelves will be placed. The body is tilted and tracked the moment when the contours of the shadows connect. Further, using a level, mark the necessary places on the sides of the future dryer.The sides and back are sewn up with lining panels or plywood. Holes are left above and below and covered with a mosquito net to protect the fruits from insect attack.A metal sheet is attached to the back, which will provide heating.All internal sides of the structure are painted with black paint, as this will contribute to the formation of a greenhouse effect.At the final stage, the device is covered with polycarbonate, transparent slate or glass.

Covering the dryer with polycarbonate

The dryer is now ready for use.The rules for using a solar dryer are reduced to the following aspects:

To get dried fruits, they should be cut into small pieces, put on trays and placed in a case.

It is impossible to immediately influence them with a stream of air. Fruits and vegetables should lie in the device for 3-4 days, only after this time you can start the drying process.

One of the necessary conditions for high-quality drying of fruits is the presence of a certain temperature regime in the structure. It cannot be raised prematurely.For this, the walls of the dryer are covered with heat-insulating material. The temperature level should be between 40 ° C-50 ° C and not exceed this figure. Otherwise, the content of vitamins in fruits will be significantly reduced.

The solar structure is installed at a slight slope so that the rays fall on the structure. To do this, lean the dryer against any suitable surface. Metal pipes can be attached to the side parts of the case, which will act as a support.

For the manufacture of shelves, it is recommended to use a mesh material so that air can circulate freely through the dryer. A mosquito net will work.