Launching the refrigerator compressor through the capacitor

Connector compressor connection diagram with a capacitor and directly

The fundamental physical rule also acts in everyday life: heat is transmitted from the body with a higher temperature to a less heated. For the reverse process to occur, and cold is created in the household appliance, external energy in the form of mechanical work should be applied.

It is according to this scheme that refrigerators operate. Electricity drives a special device that creates pressure and compresses the gas.Shaped refrigerant to transfer it into a liquid state. Such a part is a compressor, which is often called the “heart of the refrigerator”. After all, if it ceases to work normally, the process of generating cold is impossible. In addition to compression, other varieties of installations (absorption, thermoelectric) are known, but in household solutions for the home they cannot be found.

By design, compressors are most often an electric motor that drives a single.Cylinder piston pump with a valve mechanism. Less commonly there are installations of a linear type, where there are no rotating parts, and the pump piston turns from the reciprocating movements of the core of the electromagnetic coil. However, these devices are not so common, there are practically no refrigerators on old models.

Another type of drive is a system with frequency control of engine speed, which are otherwise called inverter. Structurally, these are the same electric motors with windings, but the current supply circuit for them is much more difficult than the usual. Modern control electronic control boards convert the alternating voltage of the household network 50 hertz into direct current, which is then again transformed into a periodic form, but already changed parameters.

Inverter compressors are considered the most advanced type of technique, having a number of noticeable advantages over previous models. They are produced today by leading industry companies:

However, the flip side is their excessive complexity, which does not allow the diagnosis and repair of the system at home with your own hands.

When a refrigerator with an inverter compressor broke, do not try to do something with it yourself, contact qualified masters in the service. If the installation of a conventional type with direct power from 220V is a chance to start the jammed compressor of the refrigerator without resorting to outside help. The technique of domestic brands (Atlant “,” Sviyaga “) is traditionally more suitable for amateur repair).

Where is the compressor

The compressor engine, together with a piston pump, valve mechanism and receivers for freon, it is customary to install on damping springs inside a hermetically brewed metal casing inside. This part is usually painted black for better heat transfer and looks like a rounded tank with tubes emerging from it. It is placed in the rear wall of the refrigerator on a metal frame near the capacitor (scattering excess heat of the serpentine from the tubes).

The pressure inside the sealed body of the compressor during normal operation is 10 atmospheres. Power supply to the motor is supplied through contacts on the outer wall of the tank.

Checking the compressor for performance

The result of the compressor’s full.Time operation is the creation of the necessary refrigerant pressure in the tube system. For different models, this indicator varies, but fundamentally believe that at an output pressure less than 4 atmospheres, the device for operation is unsuitable.

Directly verify the operability of the motor, measuring the pressure, it will turn out only with a snack of freon tubes. After that, the refrigerant will disappear outward, and home repairs will become impossible. To again seize the highway and upload Freon to the Freon system, you will have to invite masters with equipment. Although some owners of old refrigerators make air pumps from their compression chambers for home needs. Working with a painting spray gun or swinging wheels. In these cases, the device check is made by direct measurement of pressure.

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If the purpose of the repair is an attempt to restore the normal operation of the refrigerator, the compressor condition will have to be assessed by indirect signs (noise, vibration). According to masters, the two most frequent breakdowns:

  • A malfunction of electrical equipment, including the refusal of a commissioning relay;
  • Jamming the mechanical part of the compressor (rotor of its engine or piston in the pump cylinder).
refrigerator, compressor, capacitor

The system is checked separately for each of these problems in order to understand which part requires repair or replacement. To do this, you need to directly start the compressor of the refrigerator without a relay.

Step.By.Step instructions for connecting

When the compressor starts, the load is carried out on the launch winding. For further work, switching to working. During the operation of the main winding, energy consumption was reduced, and starting is needed to withstand increased power. In addition to the electric motor, the compressor design provides for additional relay. They are located on the outside of the compressor and are needed to maintain the desired temperature regime.

How to test refrigerator compressor start relays

The standard connection by the factory scheme provides for the use of a cable with a standard fork. After it is included in the outlet, the current through the wires enters the relay housing. The relay is necessary in order to adjust the conflict of the polarity of the compounds, since the compressor is carried out on alternating current.

If one of the components of the scheme is faulty, the motor will not work. Further diagnosis provides for checking the components in the power circuit by excluding them from work. With a malfunction of the devices, such a check diagnoses a breakdown in one of the compressor compressor compressor.

How to connect a compressor from a refrigerator without a relay?

How to connect a compressor from a refrigerator without a relay?

Connect the refrigerator directly without a relay, starting with a general output. Then connect the terminal, and put the other to the working. You need to understand, focusing on the resistance of which it works. The figure will turn out not very large. If the value is high, then this is an indication of the starting.

How to connect a refrigerator without a relay, you need to understand, otherwise it will be very hot and quickly breaks down. Check the puncture of the technique so as not to get a shock. To do this, wrap the left terminal and connect it to the output winding, and the right one from the back. Check the rest of the terminals in the same way. If everything is in order with them, do not break through, you can use. And this compressor is working.

You are not sure that you can correctly turn on the refrigerator? Better to call the master at home. Remember that any incorrect handling of equipment can lead to a lot of repair.

Specifications of the master. Repair is not easy.

When repairing refrigeration equipment, both widespread tools and specific tools are used. What will be needed to eliminate malfunctions on their own and what tools are there in the set of a refrigerator repair master?

Problem After buying a compressor, I faced the problem of starting it in the garage. And this is not due to the compressor malfunction, but with the voltage in the garage. Electricity in it, so that the light is burning. At first, the compressor after several attempts to turn it on and off was launched when “warms up”. Then he began to turn on only when lighting was burning on the street, and then he generally refused to start.

FIAC CCS 50/338 m compressorThe volume of the receiver is 50 lions 55 kgchimity of 2.25 kwnings 220 as a reduction of 330 l/Ministry of Work 10 bar

The search for the causes of the problem showed that at the time of the launch of the asynchronous engine, the starting current increases, but the local network is not able to provide this power.There is an option to install a voltage stabilizer, but it should be powerful enough to withstand load surges. I decided to try this option and for my compressor with a capacity of 2.5 kW, I took the Rucelf SDW-10000-D stabilizer nominally with a capacity of 10 kW.The situation improved-the compressor began to start again after several attempts to turn on-off, but only dances with a stabilizer were added-when the compressor exits the “mode”, it turned off in protection. After the “heating” of the compressor. It was launched without “dancing”. But this is also not what you need.

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There is another option.Since the three.Phase engine of my compressor is included in a single.Phase network by connecting the third winding through a phase.Drive capacitor, so that the electric motor is launched “easier”, the capacitance of the condenser should change:. Launch. With a start.Up capacitor (due to large starting currents). After overclocking. Its launchers The capacitor is disconnected, leaving only the worker.If the start.Up capacitor is not disconnected, the engine will overheat and burn.I decided to try this option.

Scheme.The general scheme is quite simple.

At the start of the compressor, the launcher capacitor of the joint venture is connected parallel to the working SR. On the circuit the “Acceleration” button and after a certain time is disconnected.To automate the process, use the time relay. We connect it so that after turning on the compressor it turns off through the set time and turns off the start.Up capacitor (see. The scheme is further).

I found recommendations on the main parameters of such a scheme:. The operating time of the start.Up capacitor. About 3 seconds;. The tank capacity of the start.Up capacitor of 2 2.5 times more than the worker;. The permissible voltage of the starting capacitor should exceed 1.5 times the network voltage. For example, 450 V, ;. The start.Up capacitor must be made by a resistor R1 with a resistance of 200 500 kOhm, through which the remaining electric charge will drain “.

An engine is installed on the compressor: asynchronous, type 80 rover 230 V, 50hz 2 1

2850 rpm 12 Acos = 0.95 capacity 2.5 kWcondacitor 60 μF

Taking into account this information, I acquired the necessary components.

NEED: NOTE: Below are the that I remembered.-trigger capacitor DPS-0.45-120 (120 μF, 450 V)-; Note: there are launch capacitors and smaller ones, but I did not work out with it. When testing, he swollen through my fault.

-relay ST6P-4, operating voltage 220V, maximum current on contacts 5 A;

refrigerator, compressor, capacitor

If the place allows, then you can use the block for the relay and get rid of soldering.

Tool:-soldering iron;-screwdriver;-knife;-file;-drill;-drill with a diameter of 8 mm;-key / head 12-13;-“squimmer”-for compressing the terminals.

First we collect the circuit. We connect the external capacitor and relay and put it all into the case.

In order to be able to turn off the circuit, I turned on the switch in the circuit.

Since the capacitor “turned out” is very large and with a screw for mounting. He chose the basis of the design. On it, using clamps, he fixed the case with the relay. To do this, I finalized the soup of the case.

Installation: The capacitor screw is attached to the compressor. For this, on the basis of the compressor in a suitable place, drill a hole with a diameter of 8 mm.

Connection: connection is quite simple. You need to connect three wires: 1. Connection of 2 wires to the working capacitor.- remove the capacitor. It is under the engine, and is attached with a nut;

Signs of compressor breakdown

Interruptions in the compressor are one of the most complex breakdowns that may occur during the operation of the refrigerator. Understand that the element under consideration has broken is possible according to the following signs:

  • The refrigeration unit completely stopped working, does not respond to turning on and off.
  • An uncontrolled increase in temperature in storage chambers occurs, but the backlight continues to burn.
  • Frequent compressor stops are observed.
  • The device is turned off after a short period of time after it is turned on.
  • Formation of ice on the back of the refrigerator.
  • The temperature in the cells does not decrease even after trying to forcefully change its readings using the switch.

If these signs are observed, this means that the compressor needs to be repaired.

Compressor Start With Starting Capacitor | Refrigerator Compressor Proper Testing in Hindi

Independent diagnosis of the compressor

When the compressor of the refrigerator turns on and immediately turns off, this is a good reason to diagnose. If you decide to check the compressor with your own hands, then you should not do it categorically. When an incompetent person interferes in the work of a technical device, this is fraught with serious consequences.

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If you are faced with a breakdown of the refrigerator, but do not know what exactly has broken, then in this case diagnostics is carried out. Only a person who is versed in the device of technically complex devices can conduct it independently. In other cases, it is necessary to call a specialist, since it is necessary to vacuum the compressor.

In addition, independent diagnosis is almost impossible, since it implies the presence of special equipment and tools that are not found in a regular apartment. Therefore, if the refrigerator does not freeze, rattles, then feel free to contact the service center. The sooner the diagnosis is carried out and repairs, the more money you will save. After all, it is much cheaper to repair the motor-compressor than spending funds to buy a new unit.

Refrigerator compressor connection diagram

The specialist and the user who serves his device should know it. This will help to find out the suitability of the motor for work. However, only a master can determine for what reason.

Picking

There are 3 conclusions on the engine housing, the cutting of which is indicated by the letters:

The tester should take turns connected to the terminals. First, the resistance of the start.Up and working winding is measured. The obtained values ​​are folded, then compared with the resistance between the two windings. It is measured by a tester. If the compressor is working, then these values ​​will be the same. A slight deviation is allowed.

Step.By.Step instructions for connecting

When the compressor starts, the load is carried out on the launch winding. For further work, switching to working. During the operation of the main winding, energy consumption was reduced, and starting is needed to withstand increased power. In addition to the electric motor, the compressor design provides for additional relay. They are located on the outside of the compressor and are needed to maintain the desired temperature regime.

The standard connection by the factory scheme provides for the use of a cable with a standard fork. After it is included in the outlet, the current through the wires enters the relay housing. The relay is necessary in order to adjust the conflict of the polarity of the compounds, since the compressor is carried out on alternating current.

refrigerator, compressor, capacitor

If one of the components of the scheme is faulty, the motor will not work. Further diagnosis provides for checking the components in the power circuit by excluding them from work. With a malfunction of the devices, such a check diagnoses a breakdown in one of the compressor compressor compressor.

Conclusions and useful videos

The simple design of the starting relay allows you to independently find malfunctions and easily eliminate them. This does not need deep knowledge in an electrician or a special tool.

However, it is necessary to observe punctuality, since the functionality of expensive equipment depends on the quality of the work carried out.

If you want to talk about how the starting relay was selected to restore the performance of the refrigeration unit? Make useful information of articles that you should share with visitors to the site? Please write Комментарии и мнения владельцев in the block below, place photos, ask questions.

The compressor with an electric drive installed in refrigerated machines provides a refrigerant circulation and maintain the required temperature in freezers. If the performance decreases or the problems with the launch of the motor, you should check the condition of the circuits, and then start the refrigerator compressor without a relay, which will make sure that the unit is serviceable.

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