What problems need to be paid attention to when replacing an air conditioner compressor.

The lubricating oil must be inspected for deterioration before the compressor is replaced. The degree of deterioration of lubricating oil can be divided into mild and severe, when mild, the refrigeration system is not completely polluted, the color of the oil is transparent, if litmus test paper is used.

The test is light yellow (normal white), and the compressor can be replaced without treatment due to the light pollution of the system. If the lubricating oil is seriously polluted, you can smell the tar smell, the color is black, dip the litmus test paper in the oil, and the color of the test paper changes to reddish-brown after 5 minutes, at this time the lubricating oil has been seriously deteriorated, the following treatment must be carried out before replacing the new compressor:

1. Remove dirt from the relevant parts.

In the figure, solder joints), capillary and other throttling parts (in the figure, solder joints) and compressor suction and exhaust ports (in the figure, solder joints), high-pressure nitrogen is blown in from 7 and 2 o'clock, respectively, until the outlet is free of dirt.

Blow in high-pressure nitrogen from both ends of the capillary until there is no dirt at the outlet, if it cannot be blown clean, it is recommended to replace it with a capillary of the same specification. In addition, the filter drier needs to be replaced, and the ordinary filter can be cleaned with F113 cleaning solution.

2 Pour out the lubricating oil from the gas-liquid separator.

If it cannot be poured out completely, you can drill a small hole in the gas-liquid separation part, release the lubricating oil, dissolve and wash it with F113, and then blow it clean with high-pressure nitrogen, and finally weld it.

If the lubricating oil is not deteriorated or slightly polluted, and there are no impurities or dirt in it, it can be evacuated to add fluoride after replacing it with a new compressor.

Don't make a mistake about the type of press and the position of the fixed foot. Pay attention not to drop slag into the press after welding, and run dry to test the current and exhaust after changing, and add fluorine to the test machine!

The connecting wire of the compressor can not be rusted, and the capacitor is installed with the best ,。。 View the original post

If the compressor leaks fluorine (R134), or the compressor has no pressure, the refrigerant can be used.

If the compressor pulls the cylinder.

If there is scum inside, the coolant stool media should be replaced. And the lines must be cleaned, otherwise the compressor will be damaged again. In particular, the dross is prone to clogging the expansion valve.

Target. Generally, a small car doesn't require much freon.

Target. (A car is about 1kg, it is recommended not to use ** freon.) If used, it is best to allow it to settle for more than 24 hours. Don't think that changing the compressor is simple, in fact, it is a meticulous job. Pipeline cleaning, joint leak detection, sealing pressure testing, etc. are indispensable.

If there is no ** machine, you can only add it from the new injection, if there is, you can see the purity of the first to decide whether to change it. Now the machine is used to pump freon ** to reduce air pollution, there is no clear provision, and under normal circumstances, it will be discharged when the high and low pressure nozzles of the compressor are removed. Even if there is ** equipment, it is not recommended to retract (receive) and reuse, because if there is a lack of fluorine (no leakage) when checking the air conditioner in summer, fluoride will be added directly.

Impurities in the air conditioning lines sucked into the compressor and caused damage. Refrigerants.

or excessive refrigeration oil is added to cause the compressor to be damaged by "liquid shock" (there have been cases). Damage due to quality. With the long use time, the compressor is at high temperature and high pressure for a long time, resulting in carbon brushes.

Damage. If there is still refrigerant in the air conditioning pressure system, the refrigerant can be used to reuse it, and it can be recycled, and it also avoids guessing that the refrigerant will be discharged into the atmosphere to pollute the environment, which will also increase a lot of costs, and the quality of the original refrigerant is relatively good. This allows the refrigerant to be recycled and does not need to be replaced.

The compressor replacement on the car is to replace the freon. Because there is no first-class equipment, the high and low pressure pipes must be removed to replace the compressor, and the refrigerant will run away, so the refrigerant must be refilled. Of course, it is best to clean the air conditioning pipeline before replacing the new compressor, and the air conditioning drying tank should also be replaced, otherwise, because the magazine in the air conditioning pipeline is easy to cause the air conditioning compressor.

The second Xun is broken.

It is necessary to pay attention to check the wear and tear of the old compressor, generally it does not need to be replaced, only need to be refurbished.

It is forbidden to use the refrigeration compressor as a vacuum pump to empty the air when replacing the refrigeration compressor or other connections of Zhengzi, and it is necessary to check the cause of the damage to the source refrigeration compressor, and there is no need to blow nitrogen on the system.

Be sure not to bump the compressor when installing it, otherwise it may cause damage to the new compressor before it is installed.

Turn off the power to the air conditioner: Always turn off the power to the air conditioner before performing any repair or replacement work.

Discharge refrigerants: Use appropriate tools to discharge refrigerants and ensure that waste refrigerants are properly disposed of in accordance with local regulations.

Dismantling the original compressor: Dismantling the original compressor and removing it from the air conditioning system. At this point, other parts should be inspected for damage or need to be replaced.

Install the new compressor: Install the new compressor into the air conditioning system and ensure that the various pipes and wires are properly connected.

1.The air conditioner is not refrigerated, when the air conditioner A C switch is turned on, the engine speed will not increase, if you don't need the air conditioner very much, then remove the belt of the compressor, and the power can be enhanced by more than half a gear, which has no effect on the car. If the air conditioner compressor.

Hold it and it's scrapped. If it's bad, it's probably a refrigerant.

Water ingress or oil seals.

It breaks, causing incompressible liquid to enter the compressor and cause damage to the piston. However, it is not common, most of the compressors do not work mainly because of the electromagnetic clutch.

Causes. 2.The exhaust valve is damaged, and the electromagnetic clutch coil of the Weimo compressor is burned Generally speaking, the intake and exhaust valve is broken and the compressor can only be replaced, and the compressor electromagnetic clutch coil is burned and can be replaced.

However, some unscrupulous manufacturers do not care about the good ones and treat the good ones as bad, so the replaced compressors should be sent to other maintenance manufacturers for verification.

3.If the air conditioner compressor is broken, the air conditioner will not work or the refrigeration effect will be poor, and the more obvious symptoms are that the compressor does not rotate, there is abnormal sound in rotation, abnormal pressure, low pressure, and high low pressure.

4.The air-conditioner starts the compressor instead of running on electricity, but uses engine gears or belts to drive the air-conditioning compressor to rotate, and the compressor is idling when the air-conditioner is not on.

5.Damage to the air conditioning compressor can cause additional engine power to be applied to unnecessary power.

6.After damage, the compressor is generally not repaired, but is directly replaced. Replacement is best to replace the original parts.

7.The chances of it being bad are that the refrigerant is flooded or the oil seal is broken, causing incompressible liquid to enter the compressor and cause damage to the piston. However, it is not common, and most compressors do not work mainly because of the electromagnetic clutch.

8.Common damage characteristics of compressors: shaft seal leakage, which is compressor leakage. Internal breakdown, resulting in inability to compress and not refrigeration. The clutch is damaged, causing the compressor to not work.

The main content of automobile compressor repair and maintenance is to check the compressor belt tension, the belt tension is too large, and the limb key is easy to cause the early failure of the compressor pulley bearing, which is manifested as the high noise of the compressor, if it is not repaired in time, it will cause clutch damage, and the belt tension is too small to cause the belt to slip, resulting in a decrease in the speed of the compressor and poor refrigeration effect. Automobile compressor is the heart of the automotive air conditioning and refrigeration system, playing the role of compressing and transporting refrigerant vapor, the compressor is divided into two types: variable displacement and variable displacement, according to the different working principles, air conditioning compressor can be divided into fixed displacement compressor and variable displacement compressor. Hope, thank you!

The compressor of the car air conditioner does not work, and the compressor must be replaced in time, otherwise the car air conditioner will not be able to refrigerate. The automobile air conditioning compressor does not work, which may be due to the following reasons: 1. Insufficient refrigerant.

Usually refrigerant, refrigerant, freon, refrigerant and other names refer to air conditioning refrigerant. Solution: Add air conditioning refrigerant.

2. The tightness of the belt of the car air-conditioning stool is not suitable. If the belt is too tight, it will directly cause the compressor to get stuck and not run; Loose belts can cause the compressor to pass.

1.If the cylinder block of the compressor collapses, cracks appear on the sail min, and leakage occurs, the compressor needs to be replaced2The compression of the clump machine is not running well, and the compression produces steam at a higher temperature, which circulates back and forth, which will scorch the refrigeration oil and cause the compressor to be scrapped.

Resurrection piston compressor.

Then the type of compressor can be upgraded to make a distribution according to its structure, first of all, the reciprocating piston type. So this kind of structure is the most common model now, and it has very rich experience in technology and production. And the requirements for materials will be relatively low, the cost is relatively low, if the driver's car performance is poor.

And if it is not so high, you can choose such a compressor to match your car.

The reasons why the automobile compressor does not work are: 1. The internal wear and tear of the compressor is serious, resulting in the compressor not working normally. 2. The belt slips, causing the compressor to not work.

3. The leakage of refrigerant leads to the lack of system pressure, which triggers the compressor protection switch and causes the compressor to not work. 4. The temperature sensor of the automobile air conditioner is faulty, resulting in the compressor not working, etc.

Detailed analysis of the reasons why the compressor of the automobile air conditioner does not work:

1. The internal wear of the compressor is serious, resulting in the inability to work normally.

You must know that the compressor can play a vital role in the air conditioning system, and its main job is to compress and deliver cold air, which causes the compressor to be in a state of high-speed rotation for a long time, so this is also one of the reasons why the compressor cannot work normally.

2. Check to see if there is a leak in the refrigerant, and if there is no air conditioning compression or transportation, of course, it will not work.

3. The reason why the car air conditioning compressor cannot work normally due to circuit system failure is also very common, you can check whether the circuit is smooth and check the temperature sensor solenoid valve.

Automobile air conditioner compressor does not work for other reasons for failure.

1) Due to the loosening of the plug of the control circuit of the air-conditioning compressor, resulting in poor contact, the voltage of the supply electromagnetic coil drops, and the current is unstable, resulting in the electromagnetic clutch of the air-conditioning compressor sometimes engaged and sometimes separated, and the clutch and electromagnetic coil will be burned out after working for such a long time.

2) The clearance of the electromagnetic clutch of the air-conditioning compressor is generally designed as follows, if the clutch clearance is less than the specified value, and at the same time is affected by the engine temperature, the air-conditioning compressor clutch steel plate installed next to the engine will produce thermal expansion, resulting in the clutch clearance is too small, so that the clutch is inseparable or slipping after the air conditioner is turned off, which is also easy to burn out the electromagnetic coil, bearing, clutch and parts in the refrigeration system.

I hope that the subject and netizens will thank you.

Unless it is a problem such as poor lubrication or no lubrication resulting in jamming, slight leakage of refrigerant, slippage and abnormal noise, etc., if the compressor has serious leakage or electromagnetic clutch burnout, it is generally recommended to replace it directly, otherwise the amount of maintenance work will be greater.

The most obvious manifestation of the compressor change is that the air conditioner does not refrigerate or the cooling effect becomes worse, and it can also be tested by a simple method, that is, whether the engine speed will increase after turning on the air conditioner refrigeration switch. If the engine speed is not rising, then the compressor must be faulty.

Use an air conditioner to avoid compressor failure:

1. The refrigerant should be filled in an appropriate amount, too little should be filled, too much should be released, otherwise air conditioning should not be used;

2. When parking and idling, it is best not to turn on the air conditioner for a long time;

3. Do not turn on the air conditioner for a long time under sun exposure;

4. When the air conditioning system fails, the fault should be checked in time, otherwise it will lead to serious failure if it is used for a long time.

If it is determined that the compressor is damaged, it cannot be repaired, and the compressor can only be replaced with a new one.

Whether replacement is necessary depends on the degree of wear and tear of the compressor. When the parts of the compressor are replaced and the air conditioner can be used normally, the original compressor can not be replaced. Instead, the compressor needs to be replaced to keep the machine running. When the air conditioner compressor.

In these cases, there is no need to replace the compressor. 1. a terminal.

The wire is burned out and the carbon deposits on the terminals are cleaned up.

Spray rust remover first.

After that with a file.

File off the carbon deposit, and then use the rust remover to further clean the finish, wipe the terminal, install the compressor line, and cover the lid. 2. The vibration and noise of the compressor will often occur during maintenance, and the general refrigeration performance has little impact, but the user feels abnormal, mainly because the pipeline and the casing collide, the shock absorber block falls off and the fixing bolt of the compressor is loose. 3. If the suction and exhaust valves of the compressor are not closed tightly, even if the suction and exhaust valves of the compressor are damaged, even if the refrigerant.

Sufficient systems cannot establish high and low pressures or it is difficult to establish qualified high and low pressures, and the system is not refrigerated or the cooling effect is very poor. In this case, replace the suction and exhaust valves. 4. The damage of the thermal protector is generally due to the small operating temperature point or open circuit.

Circuit breaking will cause the compressor to not work; The small operating temperature point will cause the compressor to stop after working for a period of time and repeat this, which is easy to be confused with a slight short circuit between the winding turns, which can be distinguished by the normal working current when the thermal protector is damaged, and the current is too large when the winding is short-circuited. When it is determined that the thermal protector is a problem, it needs to be repaired or a component replaced.