DIY refrigerator repair

In detail: do-it-yourself stinol refrigerator repair from a real master for the site my.housecope.com.

Stinol is a plant located in Lipetsk. The company is engaged in the production of refrigerators and freezers.

The refrigerator device from this manufacturer differs depending on the selected model:

Refrigerator Stinol 107. It is equipped with a freezer, which is located at the bottom of the refrigerator. Control system - electromechanical, with 1 compressor, 2 chambers and 2 doors. This model has a No Frost option (defrosting the freezer evaporator in automatic mode).
The scheme of the Stinol 102 refrigerator includes such elements as: supports, base, guides designed to drain excess liquid, control panel, lighting devices, compressor, suction and capillary pipes, evaporator, condenser, filter. The total volume of the refrigerating device is 320 l, of which 200 l is a cabinet and 120 l is a freezer.
Stinol 110. This is a white two-compartment refrigerator with 2 doors and 1 compressor. Electricity consumption class - C. A drip system for defrosting the chamber is installed here, there is an option for superfreezing. Inside there are 4 shelves and 2 opaque containers for storing fruits and vegetables. Dimensions - 0.6x0.6x1.85 m.
Stinol 103. This is a refrigerator with a total volume of 340 liters. The freezer is located in the lower part of the case, defrosting is manual (drip defrosting system). In the inner part on the door there are 3 shelves, and in the main part there are 4 shelves and 2 containers made of transparent plastic.

If the Stinol refrigerator is out of order, it is necessary to diagnose it in order to identify the cause of the malfunction.

Video (click to play).

Inspect the main components for corrosion of the main elements of the device, as well as mechanical damage, deformation, check the integrity of the protective coating.
Test 3 indicators of the refrigerator, such as: the temperature in the freezer, the temperature near the back of the cabinet, the level of power consumption.
Check the device for leaks, the strength of the fastening bolts and the automatic system devices.
Diagnose the system for leaks. If necessary, refill with freon.

You will need a leak detector to check for leaks. The procedure is carried out as follows:

When the unit is off, the check is carried out on the low pressure side.
With the equipment switched on, the check is carried out from the high pressure side.

You also need to check the condition of the electrical circuits:

Check resistance with a megohmmeter.
By turning on three times with a voltage reduced by 10%, it is necessary to check the reliability of the start.
Measure the resistance of the windings of the compressor starting system using an ohmmeter. It should not exceed the maximum indicator prescribed in the instructions.

There are 3 ways to check the thermostat in a refrigerator:

Thermostat contacts # 3 and 4 must be closed directly. This helps to maintain the integrity of the electrical circuit and the supply of mains voltage to the compressor input. If the supply voltage does not go to the compressor contacts, then it is necessary to inspect the entire circuit (starting from the mains socket). If the supply voltage reaches the contacts, then the power is turned off, and the contacts are pierced. In the event of a malfunction, the damaged part must be replaced.
Close the controller input contacts with a jumper.If at the same time the compressor device starts to function, then the cause of the failure lies in the regulator that needs to be replaced. If no click is heard when the switch is mechanically turned, the problem is with the thermostat compressor.
It is necessary to dismantle the thermostat and check it with a tester. The device must be switched to the continuity mode of electrical circuits. Before carrying out the procedure, the thermostat must be placed in a glass of cool water for 1 minute. After that, you can start the dialing procedure. If the number 1 appears on the monitor of the testing device, then the part is broken and needs to be replaced.

If you do not change the worn out thermostat, the compressor in the refrigerator will stop starting, which can lead to other breakdowns.

Refrigerators of the domestic brand Stinol with Italian origin are reliable equipment of the European level with excellent characteristics. Users noted such distinctive features of these household appliances as high-quality assembly, reliability, durability and democratic price. Despite the fact that the devices of this brand are no longer produced, Stinol units are still operating in many Russian families. But even with careful operation, over time, various malfunctions arise in the Stinol refrigerator. In this review, we will consider what difficulties the owners of different models of these kitchen units face.

Refrigerators of this brand consist of a metal cabinet of a standard rectangular shape with a built-in inner chamber. The freezer is made of durable polystyrene. Between the two blocks is filled with polyurethane foam, which is a powerful thermal insulation material. The capillary pipeline plays the role of throttling device... Thanks to this part, the refrigerator becomes sensitive to high humidity and dirt.

Depending on the line of the model range, there are 1-2 compressors installed in the equipment, which have a vertical axis of rotation. The part is located in the lower block of the cabinet. The device is a steel tube coil fixed in metal plates.

Exists two types of evaporator:

Static device. It is located on the shelves.
NoFrost system. It is located in a special compartment.

To find out the possible cause of the malfunction, it is necessary to carefully examine the unit for the operating condition of the elements:

check the main nodes for corrosion of parts, deformation, mechanical damage to components, violation of protective coatings;
examine the apparatus for tightness, strength of fastening of parts and automation devices;
check 3 functional parameters of the device: temperature in the freezer and near the back wall of the cabinet, power consumption.

The entire model line of refrigeration units is distinguished by reliability, functionality and high build quality. However, they, like the kitchen appliances of other brands, are not immune to various breakdowns. Let's consider typical malfunctions typical for the Stinol line.

If the cabinet is defective, a thin layer of frost will build up on the static evaporator. As a result, a significant amount of liquid accumulates in the condensate container.

The defects of this condition of the refrigerator are explained violation of the tightness of the chamber due to:

rupture or loose fit of the seal;
deformation of the structure of the refrigeration unit;
the presence of gaps between the rubber door seals and the surfaces of the freezer cabinet.

Possible malfunctions with sealing rubber restored with a hair dryer for drying and styling hair with a power of 1-1.5 kW. To do this, warm up the rubber seal in the place of contact with a hot stream. Then stretch it so that the shape of the part changes. After manipulation, the door must be closed.The refrigerator can be used after the seal has cooled down. If the protective layer is torn, it must be replaced.

Loose seal

Very frequent breakdowns occur with automation devices and electrical circuit components. These include:

faulty starting or thermal relay;
breakdowns of the compressor, fan and other components;
reducing the insulation resistance of the electrical circuit;
malfunction of the thermal fuse or defrost heater in equipment with the Nou Frost system;
defect of the freezer, timer;
breakdown of the evaporator pan heater;
clogging of the drainage system with small particles.

Troubleshooting automation in the Stinol refrigerator consists in identifying the defective element, repairing, and if it is impossible to repair the breakdown, replacing the part with a new spare part.

If the amount of refrigerant is overestimated when filling the device, then the temperature in the freezer is less than -18 0 С, the refrigerating chamber is cold, the return pipe is covered with condensate or a layer of frost. To normalize the working process of the device, after a two-hour run-in adjust the dose of freon.

If the filling dosage, on the contrary, is underestimated, the refrigerator is warm and the temperature is reduced by more than -25 0 C. At the same time, frost may partially form on the back wall. As in the previous case, it is necessary to dose the lack of refrigerant to the norm.

If happened freon leak, oily spots appear in these places. The elimination of this problem consists in filling the unit with freon or in replacing the assembly component with a new part.

Warning! Freon vapor is a poisonous gas, so it is taken from the refrigerator to special refrigerators. After any work with the refrigerant, the room is ventilated for at least 15 minutes.

There are several typical breakdowns of Stinol units, which manifest themselves according to certain signs. In the table, we will consider the main problems with refrigerators of this brand, and how they manifest themselves:

breakage of the compressor windings;

the thermostat or start-up relay does not function;

open circuit of the thermal fuse;

jamming of the timer in defrost mode;

there was a violation of contacts in the connection of the electrical circuit due to oxidation

the bimetallic plate of the protective relay or the coil of the starting relay does not work

the rubber of the seal has lost its elasticity and shape;

the compressor has reduced performance;

the capillary line or filter drier is clogged;

the integrity of electrical circuits is broken

thermostat knob not adjusted

there was a depressurization of the system

clogging of the discharge tube with small particles

Consider the most common malfunctions of some models

Two-chamber refrigerating device Stinol 102.

Stinol 103. Refrigerators of this model have a typical problem - the failure of the temperature controller. This is due to the technical characteristics of thermoelements, which are designed for a five-year service life. Due to this defect, the temperature in two chambers may be overestimated, as a result of which the unit will behave unstably.Over time, electrical connections may be disrupted due to oxidation or burning of contacts, various breaks and other breakdowns. If the starting or thermal relay is out of order, the compressor does not turn on.

Stinol 110 Is the most common model. Refrigerators consist of a spacious refrigerator compartment and a small freezer, which is equipped with a NoFrost system. Typical breakdowns of this unit are no different from those of the 102nd model. The temperature regulator T1, timer TIM-0 may be faulty.

The temperature regulator often fails. This is due to the fact that the thermostat of the German company Ranko, which were installed in a refrigerator, have a small working resource - about 5-6 years. If the temperature regulator in the refrigerator is not working, the compressor will not start. To exclude other breakdowns, it is necessary to check the serviceability of this part.

At home, it is difficult to check whether a device is working or not. However, there are 2 ways to determine the working state.

Regulator contacts numbers 3 and 4 (in the diagram of the 103rd model they are designated as TH 1 or TH 2) must be closed. This maintains the integrity of the electrical circuit and the supply of mains voltage to the compressor input (in CO 1 or CO 2). It is necessary to determine whether the supply voltage goes to the regulator contacts. If it is not there, then the integrity of the entire circuit from the electrical outlet is checked, if there is, the power is turned off and the contacts are called. In case of breakage, the part must be replaced.
Can also be shorted with a jumper thermostat input contacts... If the compressor works, then the regulator is defective. Otherwise, the failure did not happen to him. The malfunction is also determined by ear: when the thermostat switch is mechanically turned, a click occurs. If it is not there, then the probability of a part malfunction is high.

Any malfunctions of the refrigeration unit, whose service life is more than 10-15 years, require a thorough examination by a specialist. Repair of Stinol refrigerators most often consists in replacing a worn out part. If you buy high-quality original spare parts and have experience in electrical work, you can replace the spare part yourself. If breakdowns occur too often, you should think about buying a more modern version of the refrigeration appliance.

Very often household appliances, which are subjected to daily intensive use, fail. A private foreman for the repair of refrigerators can assign a fairly round sum, but fortunately, all the work can be done by hand.

Before starting repair work, you need to find out the place and reason for the strip. The simplest, most accessible, but at the same time, and dangerous indicator is water, which can flow under the freezer or flow out directly from the refrigerator. If a Soviet refrigerator is leaking, then there may be two reasons:

Drainage is clogged;
The container in which the condensate collects is overfilled;
The drain pipe is leaking.

It will not be difficult to eliminate such breakdowns, but we will tell you more about this below. If the water does not flow, and the Electrolux, Nord, Ariston and others simply stopped working, then you need to carry out a comprehensive diagnosis.

Urgent repairs of even the most complex refrigerator can be done at home with your own hands. Let's take a look at step-by-step instructions on how to troubleshoot the most common problems in refrigeration systems.

Video: how to repair a refrigerator with your own hands

Refrigerator repair prices depend on the type of problem and the specific company. Sometimes different consumables and urgent call of specialists are also separately taken into account. Consider the price list for replacing the compressor motor:DIY refrigerator repair video

It's no secret that STINOL refrigerators are widely used in Russia. High technical and consumer characteristics, as well as low price have made this brand truly popular. However, the experience of operating such refrigerators shows that after 5-7 years temperature regulators (or thermostats) fail in them. The most common reason for this is a violation of the tightness of the bellows (thermosensitive element in the regulator). The reason is that the service life of these devices, produced by the German company RANCO, is about 5 years. In this article, we will focus on troubleshooting the K series thermostats in Stinol-101/103 refrigerators, as well as the procedure for replacing them.

Possible defects of refrigerators, in which a check is required, and, if necessary, replacement of temperature controllers

2. The compressor of the refrigerator runs continuously even when the temperature control knob is OFF. The temperature in the freezing and refrigerating chambers (MK and HC) is significantly below normal.

3. The temperature in the MC and HC is above normal even at the maximum position (extreme clockwise) of the temperature control knob.

Using the example of the "Stinol-103" refrigerator, we will consider the procedure for replacing the XK type K-59 thermostat (the type marking and pin numbers are printed on its body). The replacement steps are shown in Fig. 3-9.

Using an awl or a thin screwdriver, pry off the temperature control knobs and remove them (Fig. 3 shows the left knob).

The "Stinol-101" refrigerator has only one temperature control knob.

Then remove the decorative strip 2. The strip has 6 projections that hold it in the dashboard. Two protrusions are located on the sides of the lining and two (bottom and top) at a distance of 17 cm from its edges. Since the cover is made of a fragile material, be careful when removing it. Having removed the cover, unscrew the nuts 1 for fastening the temperature regulators (Fig. 4). Then, the hex screws securing the dashboard are unscrewed. It should be noted that when removing the panel, the last to unscrew the fastening screws of the door hinge plate 1 (Fig. 5). In this case, the door must be supported.After unscrewing all the screws, raise the panel and remove the door. Then, on the back of the refrigerator, the fastening screws are unscrewed and the top cover is removed.

Take out the thermostat from the dashboard (Fig. 6), having previously disconnected the contact connectors from it. In order not to mix up the connectors when

connecting a new regulator, they should be marked.

In the HK, unscrew the plastic cover 1 (Fig. 7) and release the capillary tube 2. Remove the lighting unit 1 (Fig. 8), having previously unscrewed the screw recessed in its housing. Pull the capillary tube of the thermostat outward through hole 2.

Install and connect a new thermostat. When doing this, pay special attention not to damage the capillary tube. There is a section at the end of the tube where there is no insulation material. When installing the tube, make sure that this end is completely hidden under the decorative strip 1 (Fig. 7). To maintain the tightness of the HC, close the hole on the back of the refrigerator, formed during the installation / dismantling of the capillary tube, with plastic mass 1 (Fig. 9). Since the length of the capillary tube is much longer than necessary, it is carefully placed in the free cavities under the top cover of the refrigerator.

It is clear that it is impossible to check thermostats at home; this requires special equipment. However, there is a simple way to check these devices "by eye". At room temperature, contacts 3 and 4 of the "K" series thermostats must be closed. If there are signs of malfunction 1 (see at the beginning of the article), close with a jumper its contact. 3 and 4. If the compressor then turns on, it can be concluded that the thermostat is defective and must be replaced.

It should be noted that the thermostats have adjustment screws. They are usually painted over and adjusting them without special equipment is not recommended.

The table shows the technical characteristics of the "K" series thermostats.

Refrigerators Stinol are the brainchild of perestroika. Novolipetsk plant began production in 1993, in 1995 a line with an electronic control system was introduced. Later, in the same area, the production of refrigerators of another Italian brand Indesit was organized, but spare parts for Stinol continue to be produced. This is important, the refrigerators have worked for more than 10 years, the units need to be replaced.

All devices have a standard metal case and an inner chamber. A heat-insulating layer of polyurethane foam is laid between them. There is also a capillary pipeline and a filter drier. The system is moisture and pollution dependent. Possible malfunctions of the Stinol refrigerator are often associated with this circumstance.

The number of compressors is 1 or 2. A vertical shaft is used. Static evaporators are in the form of tubes attached to the shelves. The Know Frost system is located behind the chambers, heat transfer is carried out by an air flow directed by a fan.

They characterize the normal operation of any Stinol refrigerator, the ratio of the temperature in the freezer, close to the back wall of the cabinet and the power consumption. To detect a malfunction of the Stinol 102 two-chamber refrigerator, it is necessary to examine it for corrosive wear and the integrity of the case. The tightness and strength of the fastening of the assemblies will prevent vibration, which means the destruction of the overall structures. For the 102 series with two compressors, a frequent malfunction is the failure of the TH1 and TH2 thermostats.

Malfunctions in the electrical circuit and automation in any models, including the Stinol RF 305A 008 refrigerator, are eliminated after troubleshooting - searching for the causes of equipment failure. RF 305A 008 is a single compressor model with two evaporators. A typical breakdown of the device is a refrigerant leak in the door heating circuit.The repair consists in laying a new circuit to replace the worn one.

It is known that part of the freon evaporates from the system during a year of operation. After many years of operation of the Stinol two-chamber refrigerator, a shortage of refrigerant will become a guaranteed malfunction. An excess of it is as harmful as a lack. If a fistula appears in copper pipes or in the evaporator, an oil stain is visible from the leak.

The Stinol 101 series of two-compartment refrigerators has one compressor for the cold cabinet and the freezer compartment. If the refrigerator does not turn on, there are possible reasons:

malfunction in the wiring or lack of power in the network;
open circuit of the fuse;
the compressor does not work;
low voltage in the network.

You can make sure that there is no voltage if the indicators do not turn on, the inner light does not light up when the refrigerator door is open.

If one of the cabinets of the Stinol 101 refrigerator does not work well, the reason is a malfunction:

thermostat of one cabinet;
lack of refrigerant;
air leaks into the chamber;
the quick freeze button is jammed (the refrigerator is freezing).

The freezer is located at the bottom, with a lack of freon, the temperature remains below zero, in the refrigerator it rises.

A drip system for defrosting the refrigerator compartment is used, if the drain hole is clogged, water can collect. The freezer needs to be thawed regularly. With ice build-up, the temperature will begin to rise, and electricity consumption will increase.

Refrigerators Stinol 102 and 103 are similar in design, have 2 compressors, electronic control and drip defrost for a cold cabinet, the freezer is cleared of ice manually.

A typical reason for the malfunction of the Stinol 103 refrigerator after 5-7 years of operation is the exit from the standing thermostats TH1 and TH2. The manufacturer has put a 5-year resource in these nodes. Signs of a malfunction of the thermostat of a two-chamber refrigerator are:

the compressor does not turn on at any position of the regulator, when it is turned to the "off" position there is no relay click;
the motor is constantly running, with any switching on and off of the thermostat;
the temperature in the chamber does not drop even at the maximum setting.

Replacing the thermostat in this case is the only way to restore camera operation.

Often the reason for the failure of one of the chambers of the Stinol refrigerator can be a compressor malfunction. If, after starting, the power unit turns off immediately, you need to check the condition of the motor winding, the starting relay. Eliminate the problem by replacing the motor compressor. After that, you will need to check the system for leaks and fill it with freon.

The model of the Stinol 104 KShT-305 (NF3304T) refrigerator is three-chamber, a drawer has been added to the refrigerator and upper freezer. Defrost No Frost is used only for the upper chamber. The cooling system has one compressor, independent evaporators for the chambers.

Typical refrigerator malfunctions include:

Freon leakage from the unit circuit with accompanying signs - ice freezing in the upper corner of the refrigerator, temperature rise, non-stop compressor operation and cold condenser.
Clogging of the capillary pipe of the refrigerator will let you know with similar signs with a freon leak, but the first knee of the condenser will be hot, the rest will be heated to room temperature. If the refrigerator is turned off in the first seconds, the temperature of the filter drier will drop.
The filter drier is clogged - the symptoms are the same as if there is no refrigerant in the system - it does not pass.
The compressor can run idle without liquefying the gas, the signs of this malfunction are an increase in temperature in the cold chamber, the residual resource may be enough for the freezer.
Defective thermostat - the temperature does not hold in the chambers, the mode adjustment remains unaffected, the compressor works without stopping or does not turn on.

Determine the malfunction, carry out diagnostics, the master must use the devices, removing the decorative panels. You can change the light bulb yourself, clean the condensate drain hole or replace the seal on the door.

Refrigerator single-compressor, two-chamber with Know Frost for the freezer and a "crying" wall for the cold cabinet. The unit has a complex electrical circuit due to the use of two defrosting systems.

Diagnostics of malfunctions of the Stinol 107L refrigerator and creation of conditions for their elimination. The temperature in the refrigerator depends on the thermodynamic balance of the system that contains the components of the dual refrigerant system. The balance will change if it happens:

Freon leak from the refrigeration unit.
Clogged capillary piping of the refrigeration unit is a problem for all refrigerators of this brand.
Clogged filter drier.
Loss of compressor motor performance.

Typically, the hot coolant circuit around the door is made of rusting steel. Over the years, the problem manifests itself as a freon leak, a new circuit is created during repairs. Rinse the capillary tubes, determine the functionality of the assemblies and carry out repairs by specialists.

In the Know Frost system, a malfunction or an open in the evaporator defrost circuit, fan defect may occur. Incorrect timer operation and clogging of the drain hole can lead to freezing of surfaces and a violation of the temperature regime in the chambers. Defects are found and corrected by the master.

The reason for the incorrect operation of the Styrene 107L refrigerator may be the failure of the thermostats. This is one of the most common faults. Sensor failure accompanies and is similar in signs to the absence of freon, faulty heating element Nou Frost, compressor malfunction. You can preliminarily determine the malfunction of the temperature sensor yourself, the device does not respond to commands, there is no click when setting the "off" mode.

We offer you to watch a video about malfunctions and their elimination in Stinol 107L refrigerators.

The model of Stinol 110 refrigerators with an overhead freezer compartment turned out to be the most reliable of the entire line. One compressor circulates the refrigerant through two evaporators, the thermostat is an electromechanical timer, providing the mode and turning on the heater between cycles.A common cause of malfunction in the Stinol 110 refrigerator, after many years of operation, the craftsmen determine the clogging of the capillary tubes. As a result, the temperature in the refrigerator compartment is high. A characteristic feature is that the unit turns off spontaneously, it has to be turned on forcibly. For the same reason, a "fur coat" can form. A specialist can fix the problem by eliminating the plug.Failure of the thermostat is the main cause of equipment failure. This is the reason why the constant alarm on the control panel can be explained. The lamp is on because the temperature in one of the chambers is not low enough. A defective thermostat could be the cause. As a consequence, the compressor cycle changes.Refrigerators Stinol 110 are venerable age, the last one was released in 2005. Therefore, temperature incontinence may be dependent on the seal, it must be washed off with boiling water or replaced - elasticity and tightness are lost. If there are traces of rust around the seal, the circuit will soon need to be replaced due to the leakage of freon through microcracks in the tubes.In order to have a complete understanding of the electrical circuits of refrigerators, we need to go back to the 70s of the last century, where in our domestic technical literature it was possible to find out a detailed description of all types of refrigerators of those years.In modern circuits, we can observe: a cold storage chamber thermostat with grounding, a temperature compensation switch, a heater, an overheating protection relay, a compressor with grounding, an overcurrent protection device, a door contact and a lamp. The overcurrent protection device is the principle of operation of an electromagnet, with overcurrents, the rod in the winding is attracted to the poles of the magnetic circuit, the contact opens, and a break occurs in the electrical circuit. When the current stabilizes, the return spring brings the rod to its original position and the contact closes the electrical circuit.refrigerator condenser coilThe overheating protection relay works on the principle of the mobility of the bimetallic plate until a certain heating, the temperature heating is set in the heating resistor that gives off heat to the bimetallic plate, and a certain heating of the resistor creates a current.From electrical engineering, we know that the less resistance in the electrical circuit, the greater the current, which means the resistor has its own specific resistance to the temperature regime. So the plate was deformed under the influence of heat, - the contact opened.The heating temperature of the plate has decreased - the plate has taken its original position, - the electric circuit is closed. The heater is made in the form of an ordinary incandescent spiral. The compressor is installed in refrigerators, single-phase, with a squirrel-cage rotor. The circuit also has a lamp connected in parallel in the electrical circuit, with a contact brought out on the refrigerator door, the contact closes when the door is opened.Refrigeration circuit operationFor floor-standing refrigerators, the refrigeration unit has a lower motor-compressor arrangement. The sealed refrigeration unit mainly consists of:

motor - compressor;

capacitor;

evaporator

and is a circulating closed system.refrigeration circuit with two motor - compressorsFreon refrigerant is used for circulation. When the motor - compressor is operating, freon vapors are sucked from the evaporator through the suction pipe into the casing of the motor - compressor and then the freon enters the cylinder.Further, hot vapors of freon from the compressor cylinder are injected under pressure into the condenser. Due to the small section of the capillary tube, the freon pressure in the condenser increases. The refrigerant condenses at high pressure and freon in a liquid state accumulates on the end turns of the condenser coil.refrigeration unit deviceThrough a capillary tube from the condenser, freon enters the evaporator. Getting into the evaporator, the liquid freon begins to boil, since a low pressure is created in the evaporator. Heat is absorbed from the environment, that is, from the refrigerating chamber.The absorbed heat, together with the refrigerant, is fed back through the motor-compressor to the condenser coil.Refrigerator wiring diagramrefrigerator scheme StinolThis diagram contains the following connections:- connected in series in an electrical circuit. Two light bulbs are connected in parallel in the circuit:

indicator lamp SL1;

refrigerator compartment lighting lamp L1

The reasons for not turning on the refrigerator can be different:

the single-pole circuit breaker in the group panel is turned off,

the machine is turned off above the electric meter in the apartment,

there is no contact between the plug and the socket,

the temperature regulator in the refrigerator is not turned on,

the refrigerator overheating protection relay has tripped and you immediately turned on the refrigerator again.

refrigerator thermostat StinolA malfunction of the thermostat affects the operation of the refrigerator:

duration of work;

prolonged non-inclusion;

continuity of work.

Usually, this reason for a malfunction of the refrigerator thermostat is the oxidation of the contacts.In the event of a breakdown, malfunction of the thermostat, it should be disassembled and the contacts of the bimetallic plate should be cleaned.If the starting relay fails, it may fail:

starting winding of the motor - compressor;

working winding of the motor - compressor,

- depending on the nature of the malfunction.starting protection relay for motor - compressorelectrical diagram of starting and protective relayThe protective relay is an overcurrent fuse for the motor - compressor motor. A failure of the protective relay leads to failure of the electric motor or shutdown as such, the shutdown of the electric motor without the influence of the thermostat.Or in other words, with a sharp increase in the current strength, a voltage surge in the electrical network and a malfunction of the protective relay, the stator windings of the electric motor burn out.Also, for refrigerators, such a malfunction is typical as the frequent activation of the protective relay, which leads to the switching on and off of the motor - compressor without the participation of the thermostat.Repair, with the subsequent installation or replacement of a motor - compressor for a refrigeration unit, is a more voluminous performance of work. In general, soldering and welding are used when repairing a refrigeration unit.motor - refrigerator compressorSteel and copper pipes are connected together by soldering with silver solder.The cover of the casing of the motor - compressor is welded with a steel electrode.Depending on the nature of the work carried out during the repair of the refrigeration unit, the following types of connections can be used:

tin soldering;

butt welding;

arc welding;

argon arc welding;

brazing with copper;

soldering with silver solder.

Such work, for the repair of the refrigeration unit, requires, in some cases, specialized conditions, that is, they are carried out in the workshop premises.gas torch for brazing copper pipesEvaporator and condenser coil made of aluminum, - connected to copper pipes through copper-aluminum transition pipes. The aluminum side of the pipe is TIG welded to the evaporator. The copper side of the branch pipe is soldered with silver solder.copper and bronze solder fittingsArgon arc welding is performed with a special torch using filler material. The parts to be welded are pre-cleaned with a wire brush and degreased with gasoline.When welding the casing of the motor - compressor, work should be carried out as quickly as possible so as not to overheat the cover with contacts.To carry out butt welding of individual parts, a household welding machine with a 220V power supply is quite suitable.welding machine FUBAG TR 220The place of Freon leakage from the refrigeration unit is determined in a workshop, - under air pressure.

Video (click to play).

It should also be remembered that with a reduced voltage in the electrical network, the contacts of the starting relay at the moment the engine is turned on, the motor-compressor may not close, as a result of which the starting winding will not be connected. For this reason, the rotor will not be able to turn, and a short-circuit current will flow through the working winding. The electric motor in this example is likely to burn out.