DIY gas stove ignition repair

Malfunction and repair of internal combustion engine camshafts.

The most common failures of this part are cam breakages, camshaft bending, wear on its bearing journals, and an increase in bearing clearances. All these malfunctions are usually indicated by a knock from the valve train, as well as a decrease in oil pressure.

The bearing clearance can be returned to normal by restoring or regrinding the bearing journals to the near oversize. In this case, the depth of the oil grooves should be increased to prevent oil starvation of the engine parts. After the completion of the neck, it is necessary to polish with GOI paste.

If the shaft cams are slightly worn out, they can be restored by sanding them. In this case, it is necessary to switch from coarse-grained paper to fine-grained paper. If in some places the cams have crumbled, then it is recommended to eliminate the sharp edges of the metal with the same sandpaper. However, this will only help in case of small chipping (up to 3 mm in length). Otherwise, you will have to purchase a new assembly. In case of vertical wear of the cams, complex grinding on a copy grinding machine is required. In the case of significant vertical development, the cams are repaired by fusion. Then they should be sanded. Note that the permissible cam development is 0.5 mm. At large values, a decrease in the power characteristics of the power unit is observed. Therefore, in such cases, the shaft is replaced with a new one.

Worn camshaft journals are also repaired by welding. Although there are other recovery methods - chrome plating and chrome plating. But in any case, the restored parts must be sanded.

Video (click to play).

As mentioned above, the shaft can also be bent. Its permissible value is no more than 0.1 mm. Otherwise, the part will need to be repaired.

You should also measure the clearance between the shaft journals and the holes in the bearings on the block head. Measurements are made with a calibrated wire. Moreover, its maximum value can be 0.2 mm.

Modern gas stoves or gas hobs are equipped with electric ignition. Having studied the principle of work, there will be a chance repair the electric ignition with your own hands... The electric ignition of gas stoves and hobs is turned on at the moment of turning the gas supply knob to the selected burner or by briefly pressing the electric ignition button. You hear a click generated by the discharge of the electrode on the ground of the cooking zone. At this moment you can see a spark, a kind of lightning, but in miniature. And people with a heightened sense of smell can smell ozone.

Discharge after discharge follows at intervals of one second, until the gas supply knob is released. If you have an electric ignition button, the number of electric ignition discharges is equal to the number of times the electric ignition button is pressed. Accordingly, the frequency of discharges in manual mode is equal to the frequency of pressing the button. The discharge causes ignition (ignition) of the gas supplied to the selected burner. But since the scheme for generating a spark works from the mains (electricity), ignition has acquired the name of electric ignition. In the case when sparking occurs in an automatic mode, such an electric ignition is also called electronic.

THERE ARE TWO ELECTRIC IGNITION OPTIONS:

1. By pressing and releasing the electric ignition button, a single sparking occurs (at the moment the button is released).
2. By pressing the gas supply knob on the burner, continuous sparking occurs at a frequency of one second.

TWO ELECTRIC IGNITION OPTIONS ARE BASED ON TWO WIRING OPTIONS:

1. The first option (fig. 3) is based on a manual charge-discharge mode of a storage capacitor. It works like this:

(r1- 3.9k, c1- 2.2MkfX600V, d1- 1N4007) The circuit is connected as follows: The mains voltage is applied to the diode d1 (Figure 3.1). By pressing the electric ignition button, you apply the mains voltage to the capacitor c1 (Figure 3.2). The capacitor is charging. At the moment the button is released, the contact of the capacitor c1 (Figure 3.2) is connected to the transformer t1 through the contact (Figure 3.3). The reverse process takes place - the discharge of the capacitor through the primary winding of the high-voltage transformer t1. On the secondary winding of the transformer (Fig. 3.t1-1) and (Fig. 3.t1-2), an output voltage of about 10 kilovolts is formed. A spark is forming. By pressing and releasing the button, the process is repeated. The terminals of the transformer (fig3.t1-1) and (fig3.t1-2) on (fig1 and fig2) are marked with number 1. The conclusion (fig3.1) corresponds to numbers 5 and 2 (fig2). Conclusion (Figure 3.2) corresponds to numbers 7 and 3 (Figure 2). Conclusion (Figure 3.3) corresponds to numbers 6 and 4 (Figure 2).

2. The second option (Fig. 4) is based on the electronic control of the charge-discharge mode of the storage capacitor. It works like this:

When you press the electric ignition button, the charge - discharge occurs in automatic mode. The automatic mode depends on the circuit design of the electric ignition.

The circuit works as follows: with a positive half-wave of the mains voltage, capacitor C1 is charged through D2 and D3, with a negative half-wave through D1, the cathode S1 is connected to the "minus" half-wave, and through the resistor R3 a control current is supplied to the control electrode of the thyristor. The thyristor opens, the capacitor C1 is discharged to the high-voltage transformer, which induces an ignition spark. An output voltage of about 10 kilovolts is generated on the secondary winding of the transformer. By keeping the throttle knob pressed, the process repeats at a frequency of 50 Hz, or roughly one spark per second.

Electric ignition is more common with four and six-channel (Fig. 1 and Fig. 2) under number 1, the taps for connecting the electrodes are indicated on which you observe sparking. In other words, we have four ignition electrodes or six electrodes. The number of electrodes depends on the number of secondary windings of the step-up transformer. If there are two windings, then we have four outputs for four electrodes. If there are three windings of the step-up transformer, we have six outputs for six electrodes.

Electric ignition, which allows you to connect six electrodes, is usually used in gas stoves of a single design with an oven. And as a result, two of the six available electrodes are in the oven and are used to ignite gas in the oven. The appearance of electric ignition devices can be seen in (Fig. 1 and Fig. 2). They have some difference, but the circuit design and the principle of operation remain unchanged.

Below is a list of common malfunctions of electric ignition of gas stoves, and methods for their elimination. This information was accumulated over the years of practice, and acquired structural forms. The information will be useful to both novice craftsmen and those who are used to repairing everything with their own hands. Below is a list of six points characterizing the malfunction of the electric ignition of gas stoves. Knowing the contents of the items will make it easier to learn the secrets of the repair. Each item contains a detailed description of the logical troubleshooting paths of the item name. Knowledge will help fulfill DIY repair of electric ignition of gas stoves... Make repairs yourself.

Almost all gas stoves provide gas ignition system... when the button is pressed, a spark gap is triggered near the comfort zone, a spark breaks through and the gas ignites. Of course, this is very convenient (after all, once it was necessary to carry out this entire procedure with the help of matches), only here there is one drawback - the spark generated by this device is single.

Using electronics, you can slightly modify this system and turn it into a multi-spark system.

This scheme of electric ignition of gas for a household gas stove almost similar to the one shown above, but contains a little more detail - here, instead of a triac, a thyristor is used.
The circuit works as follows: with a negative half-wave of the mains voltage (terminal L) through the diodes VD2 and VD4, the capacitor C1 is charged, and with a positive half-wave through the diode VD1, the thyristor VS1 opens and discharges the capacitor C1 to the high-voltage transformer, which forms an ignition spark. The VD3 diode serves to ensure the flow of current through the control electrode of the thyristor at a positive half-wave. The process is repeated at a frequency of 50 Hz and a powerful sheaf of sparks is formed on the ignition electrodes, instantly igniting the gas.

The circuit works as follows: with a positive half-wave of the mains voltage (terminal L) through the diodes VD2 and VD3, the capacitor C1 is charged, and with a negative half-wave through the diode VD1, the cathode of the thyristor VS1 is connected to the "minus" half-wave, and through the resistor R3, the control electrode of the thyristor is supplied control current. The thyristor opens and discharges the capacitor C1 to the high-voltage transformer, which forms an ignition spark. The process is repeated at a frequency of 50 Hz and a powerful sheaf of sparks is formed on the ignition electrodes, instantly igniting the gas.

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Before playing with sparks, you should know that high voltage is life-threatening, and besides, each spark is a source of the entire range of radiation, including radioactive ones.
Most modern gas devices use an electronic device that ignites the gas, here are a few of these from stoves

I became interested in these devices in order to make a home-made lighter on their basis or according to such a scheme, due to the lack of normal electric lighters for stoves on sale.
It turned out that this is not such a complicated device as it seems at first glance. It is enough to apply 220V to the terminals signed with the letters “L” and “N” and high-voltage pulses will appear on the terminals of the coils, about 10 kV from each coil. In order not to damage the device, it is necessary to put jumpers between the terminals of the coils so that the total clearance between the terminals of each coil is no more than 10 mm. Like on a picture.

It is from such a device that you can make a separate lighter powered by the network. It should not be built into the stove, since the completion and modernization of gas appliances is not a rewarding and very dangerous business.

Here is an approximate electric ignition diagram.

I assembled it on a VT138 triac R1 = 100R 2w, R2 = 22k 0.25w, R3 = 1k 0.125w, C = 3mf, on a ring ferrite (8 primary coils 50 secondary coils). She gave out sparks with a frequency of about 50Hz, which could not penetrate 1mm of air. You need to wind the transformer on a rod core and on a special frame or buy a ready-made device. And so, with a decrease in the turns of the primary, the force of the spark weakened, and then, with two turns, the triac burned out.
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I found the switching circuit of the Tor220-227 microcircuit, it is very similar to the ignition circuit

here the field-effect transistor works for the primary, but for some reason it is connected in series. When using a microcircuit, pulses of 300V are supplied to the primary, if you wind two secondary windings, one for feedback, the other boost, the output of which can be connected to a multiplier, the output of which is to spark.

It seems there should be a more reliable and simpler scheme of a lighter. Who knows, tell me.

On many models of gas stoves, designers install an automatic ignition, which is switched on with the supply of gas or from a separate button. This function is very convenient: you do not need to be in contact with an open flame in order to ignite the burner. If you suddenly find that the autoignition on the gas stove does not work, do not rush to call the service: it is quite possible to repair this malfunction with your own hands.

Based on the statistics collected, gas stove specialists have compiled an approximate register of common failures.

1. When the burner control knob or the dedicated separate button is pressed, the electric ignition does not occur.
2. The automation of the product in the gas stove works constantly, clicks are heardbut there is no spark - the gas is not ignited.
3. Releasing a button or knob does not turn off the system.
4. The device continues to operate continuously, even when the button is not pressed.
5. Knocks out a machine gun protection in the apartment panel at start-up.
6. The circuit of piezo ignition or electric ignition of the stove is closed.

Electric ignition can only be used on gas stoves. Its main function is to ignite blue fuel at the moment it leaves the burner plate installed on the gas stove. It happens automatic and mechanical type... In the first version, special piezoelectric elements ignite the gas-air mixture when you turn a switch on the control panel, and in the second case, the user must press a special button. The spark ignites the gas and cooking can begin. An automatic gas ignition device is the most capricious and unreliable device from the entire arsenal that a modern gas stove is equipped with.

Very important! Never try to turn on the system with the burners removed - breakdown to the body is guaranteed.

Taken together, the entire operation of this system looks like this:

• the user presses the button, thereby supplying voltage to the capacitor, which begins to charge;
• the level on the thyristor gradually increases, when it reaches the set threshold, then the capacitor is discharged;
• a voltage arises at the output of the entire system, which activates a special device - an arrester;
• the spark ignites the gas.

The whole system works much faster than we are talking about it. The spark is supplied to the burner that is currently on (in older models it was supplied to all devices, but the one where the gas was accessible was ignited). The start buttons are located under the controls. Electric ignition powered by mains with an alternating current of 220 volts and is vulnerable to voltage surges that occur quite often. After a power surge, it can constantly click, which indicates a breakdown.

The system will work only if the plug of a separate cable is connected to the home electrical network, which many users forget and call the service with complaints.

Why does the electric ignition of the gas stove not work? There are several reasons for a malfunction in this device.

1. There is no spark on the electrodes.
2. Moisture or grease has come into contact with the interior of the system or the surface of the plug.
3. A crack or a burst of ceramic candle insulation has appeared.
4. Burnt out transformer - spark generating unit.
5. The contacts of the power button have oxidized or carbon deposits have formed on them as a result of a short circuit (short circuit).

Some malfunctions can appear after wet cleaning the hob, when moisture gets into the inside of the hob. To eliminate them, it is enough to do prophylaxis: cleaning contacts, drying candles - almost the same measures are done by motorists.

If only one burner does not ignite, then the reason may be damage to the high-voltage wire to the ignition electrode, the ignition device itself, or a malfunction of the channel of the entire unit.

When you have made an inspection, found out the cause and diagnosed the problem, you can start to repair the gas stove yourself. It is carried out similarly for all models. The famous Italian brand Ariston or the Belarusian Hephaestus stove, which is in great demand among Russians - there is no difference, the ignition systems are almost identical except for purely individual nuances.

Refresh your knowledge by reading the instructions for use of the product before starting work. Knowledge of the principle of operation and the device of a gas stove is necessary for its successful repair.

1. We ignite the faulty burner using a third-party source of open fire, matches or a special lighter - the flame must be even and distributed over the entire circumference of the divider. Flame yellow means the wrong concentration of gas and air: it is necessary to clean the nozzle or replace it. It is possible that the holes in the divider are clogged or moisture has entered. It is necessary to do preventive maintenance, blow out all the holes, remove the burner body and inspect it.
2. All electrodes and switches are connected in parallel. Each electrode is powered from a single ignition unit, but their activation comes from different buttons. To make sure that only this button does not work, and the control unit is normal, you need to turn on the next hotplate. If gas is ignited - repair the button, and everything else in the system is working properly.
3. If the ignition device cracks constantly, then it is necessary check contacts - they could stick from the ingress of fat or carbon deposits formed as a result of oxidation. Before repairing, do not forget to disconnect the stove from the mains, then carefully dismantle, clean the contacts or dry them with a hair dryer. Compliance with safety guidelines will protect you from injury.

Most of the breakdowns that led to the failure can be eliminated on their own - they are not dangerous for the user, but it must be remembered that gas stoves are potentially dangerous products, so even preventive work must be performed carefully.

Sometimes a breakdown of the ignition button leads to the fact that the repair will not help - a complete replacement is required. In this case, it is better to go to special stores and purchase a similar option.

Cheap printed circuit boards that make up the electronic stuffing of household equipment cost $ 10. The consumer avoids repairing budget gas stoves with electric ignition with their own hands. A price exceeding $ 30 unwittingly provokes the thought of saving money. You visit the forum of radio amateurs: you see ... Ready-made electrical circuits of ignition devices. Wind step-up transformers, look for capacitors, solder, smoke equipment at your own peril and risk.

In contrast to most household appliances, repairing gas stoves with electric ignition forces you to master the technique of replacing resistors. A frequent, ongoing process. Newcomers challenging the appropriateness of the event cause general indignation among members of the forum. They call the dilettante offensive phrases, condescendingly explain, inside the high-voltage unit:

1. High voltage transformer.
2. Capacitor.
3. Diode.
4. Resistor.

The electrical circuit is specially filled with compound, the burdock will not get inside. You pick it up, saving your hard-earned $ 30. The self-taught ignore the manufacturer's thoughts about protecting products against unauthorized access.

The gas stove electric ignition unit optionally contains control elements - thyristors, triacs. It takes a long time to explain the exact principle of operation of the components of the electric ignition. It is worth noting: the behavior of semiconductor products resembles a key (a tap - plumbers are more accustomed to think). Semiconductor electronic elements are used to drive a power line through a voltage of 5-12 volts.

The analogy of a water valve is complete. A person makes a symbolic effort, opening the tap, releases the incredible power of the pump. The scanty voltage of the control electrode reaches the operating point, the thyristor opens, starting the electric ignition circuit. There are two positions: open, closed. Pure digital microelectronics. Any processor is formed by semiconductor keys - miniature, indistinguishable by the human eye. The PC is considered a logical evolutionary continuation of electronic circuits.

The high-voltage transformer increases the voltage (units of kilovolts) of the output winding, the slot of the burner arresters illuminates the electric arc.Gas is supplied by the handle of the same name, starting the electric ignition circuit. There are other models of devices. Thanks to the spark, the gas ignites:

• pressing the button, the cook charges the capacitor with rectified voltage;
• the capacity begins to accumulate electrons;
• the voltage level of the control thyristor rises when it reaches the threshold value, the capacitor discharges, warming up the primary winding of the transformer;
• the output of the electric ignition circuit generates a voltage that causes the arrester to operate;
• the spark ignites the gas.

The principle of operation of electric ignition is based on charging a capacitor through a rectifying diode to a certain level. The specific implementations of the schema vary. Be ashamed to study an electrical engineering textbook: repairing the electric ignition of a gas stove with your own hands is easier than a steamed turnip. Know a couple of rules, be able to solder.

The mentioned resistor of the electric ignition circuit is more often with a nominal value of 3.9 kOhm. The dissipation power is 0.5, less often 1 W. The size of the capacity has long been known (according to the opinion of members of the forum) - a couple of fractions above 2 microfarads (the numbers go in jumps according to the rows given by GOST, it will not be possible to find exactly 2 microfarads, except from the E24 series) with an operating voltage of 250 volts. The radio amateur will not notice the difficulties. There were times when TVS were manually rewound!

The average person wants to know the sequence of actions. First, it is necessary to disconnect the electric ignition of the gas stove from the voltage source. The second step is to remove the electronic, high-voltage blocks. The design comes with separate printed circuit boards, a single substrate. There are other options.

Begin inspection by evaluating the quality of the tracks, soldered joints. The conductor layer, which looks like a silver stripe, is covered with a layer of varnish. Made to protect the electric ignition circuit from external factors, primarily moisture. The varnish reliably covers the conductive layer. Do you have nail polish at home? It will do one hundred percent.

Carbon deposits are cleaned with a zero skin, degreased with alcohol, varnished on top. The peeled, torn tracks of the electric ignition circuit are repaired.

Example. The conductive layer is torn. Both edges are slightly cleaned with emery, tinned, connected with solder. A varnish is applied on top of the cooled solder, alcohol is applied as needed. For wiping the PCB, of course.

Burnt resistor is black. The denomination is indicated above. It is not forbidden to put an element more powerful. Eyewitnesses unanimously say: the further process of exploitation is going excellently. Let's give the plate circuit a 9 kΩ resistor. It is better to take the dissipation power equal to greater than the analogous parameter of the original element. 1 watt will do.

The breakdown of the capacitor is visible from afar. Some (electrolytic) ones swell, the swollen keg cannot be missed by an attentive master. Regarding the denominations, it is recommended to ask the members of the forum. Modern marking of resistors with multi-colored rings is more complicated than the existing alphanumeric inscription. Tolerance was expressed as a percentage.

Repairing the electric ignition of a gas stove can be a simple matter. If the transformer windings are burnt out, you will have to buy a new one. Do you want to check the localization of the fault? For each output we find a pair that rings. The resistance (use a multimeter) is hundreds of ohms. There were "legs" hanging in the air: rather, there was a problem with the installation of the transformer. Rewinding a lesson is not easy. The vastness of the network will provide you with valuable information. A core of the form of the letter Ш is used. There are dozen primary turns, the secondary winding will have to be taken seriously.

After examining the circuit boards of the gas stove, pay close attention to the state of the button. Control panel element that initiates the process of ionization of the spark gap. The contacts of the electric ignition button are powered by the voltage of the centralized network of 230 V. Brass contacts with a short circuit of the circuit are easily melted by the welding arc.It is recommended to clean the pads, check the performance of the switch with a multimeter (ringing).

A product that can withstand the operating voltage is suitable. Electric ignition will not work any worse. At times, installation is accompanied by technical difficulties. The button does not fit the installation dimensions of the case. Modify with a file.

The main thing is to solder the jumper correctly, the necessary spare parts are often sold separately.

Each burner is equipped with a candle, a combustion control device (thermocouple). Electric ignition of a gas stove schematically differs little from an ordinary car. Do you want to check if the gas stove spark plug is working? Turn off the gas. Remove the reflectors, the baffles of each burner (round things that form tongues of fire), look ... When the ignition is pressed, the products give a good spark. 1 candle broken? The cause of the breakdown of the electric ignition of the gas stove has been found.

The combustion control circuit is composed of a thermocouple (temperature sensor of an arbitrary type). It happens that the electric ignition works 100%, the gas refuses to burn. The point is rather in this node. The command closes the blue fuel supply path. A properly beating spark of a gas stove is powerless to set fire to air devoid of a combustible mixture.

The electric ignition unit is equipped with 4 or 6 outputs, the literature ignores the reason for the need for the specified number of contacts. We assume 1 pair is used by the oven, grill. Modern trends oblige the manufacturer to produce two-in-one models. A gas stove with an electric ignition of the oven is convenient: you will find models where the opportunity is not realized, and those where you will have to modify the circuit with a copper core. Will need help from her husband.

We will be ashamed to call the electrical circuits for igniting a gas stove complex. Hams make it easier. The getinax board is etched out, the necessary elements are soldered. The original composition of the electric ignition of a gas stove provides a ready-made transformer, the button discussed above.

An experienced engineer can usually improve this by the manufacturer. The Internet gives an interesting scheme for the electric ignition of a gas stove, formed by a triac, striking a simple one.

The electric ignition Zanussi gas stove will make you forget the look of a matchbox. This is what company officials say. The business class segment is represented by products from Gorenje (Slovenia). Despite the abundance of brands, an almost complete list belongs to the Electrolux concern (headquartered in Stockholm). The mentioned Zanussi belongs to the category.