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The auto AC compressor VW Polo is accessible in numerous sorts, which are as per the following.
Reciprocating compressors
The VW Polo's oscillating compressor has a plunging activity component that incorporates pistons. The pistons shift for the most part in a chamber, making a vacuum to draw in and push air out. The number of cylinders in a chamber might change from one to six, contingent upon the plan. In any case, many individuals find VW Polo's reciprocating compressors very quiet and calm.
Rotary compressors
VW Polo's turning compressors involve an eccentric circle with one or two circles. The odd circle turns in a chamber that contains a fixed circle. As the eccentric circle pivots, it slides against the settled circle, making a tight fit between the internal parts. The tension between the moving and fixed circles changes, making the cooling gas's tension rise and fall.
Screw compressors
The VW screw compressor has two interlaced helical screws. The helical screws are placed in a lodging with admission and release ports. Both helical screws have a drive shaft, and one screw has a drive shaft with a pinion. The turning of the two screws draws air from the admission port and pushes it toward the release port. As the screws turn, the air moves through the screws in a smooth stream, diminishing the air pressure in the channel section and expanding pressure in the release segment. VW screw compressors are generally utilized for bigger climate control systems since they are extremely productive and have a high limit.
Scroll compressors
The scroll compressor in the VW Polo's air conditioner has two intertwining plates. One plate moves in a round design inside the other plate. The two plates are situated in a lodging with admission and release ports. The air conditioner of the VW Polo attracts air through the admission port, and the turning of the two plates moves the air internally from the admission port to the release port. As the two plates move, the space between them changes, decreasing the volume of the air space and subsequently expanding the tension. The tension change in the scroll compressor is consistent, bringing about a smooth and stable change.
Here are the specifications of the VW AC compressor.
1. Type:
The VW AC compressor is a rotary type, which is the most common type of compressor for mobile air conditioning. The rotary compressor has a continuous and smooth flow of refrigerant with little pressure drop. It also has a high specific refrigerating capacity.
2. Drive:
The compressor is driven by a belt and pulley connected to the engine's crankshaft. The belt and pulley system transfers mechanical energy from the engine to the compressor, allowing it to circulate refrigerant throughout the AC system.
3. Refrigerant:
The compressor uses R-134A refrigerant, a standard refrigerant for many car AC systems. R-134A is a hydrofluorocarbon (HFC) compound commonly used in new car models since it has a lower environmental impact than older refrigerants like R-12.
4. Capacity:
The VW AC compressor has a cooling capacity of around 5,000 to 6,000 BTUs per hour. This capacity is suitable for small cars and can cool the car quickly, even on hot summer days.
5. Voltage:
The compressor requires a 12V electrical system to power the clutch and other electrical components. The 12V system is standard for most small cars.
6. Mounting:
The compressor is mounted on the engine using a bolt-on system. The compressor is attached to a bracket bolted to the engine block. This system allows for easy installation and removal of the compressor for maintenance or replacement.
7. Oil:
The compressor uses a PAG (polyalkylene glycol) oil for lubrication. PAG oil is the most common type of oil used in R-134A AC systems. The oil is circulated throughout the compressor by the refrigerant to lubricate moving parts and ensure smooth operation.
8. Service interval:
The compressor should be serviced every 30,000 to 60,000 miles. Regular maintenance, such as checking the belt tension, replacing the oil, and cleaning the condenser, ensures the compressor runs efficiently and has a long life. Depending on the problem, the compressor may need to be replaced after 10 to 20 years.
Wholesale buyers need to know the factors that affect the choice of an AC compressor before they place their orders. Below are the main considerations:
Compatibility
Ensure that the compressor is compatible with the intended vehicle make, model, and engine type. For instance, the VW Polo AC compressor should match the specifications of the VW Polo.
Warranty
To reduce the risks associated with defective products, select AC compressors that have a lengthy warranty period.
Quality
Quality determines the durability of the AC compressor. Select AC compressors that are manufactured from quality materials and have quality construction. Additionally, quality influences the price of the AC compressor, with higher quality going at a higher price.
Installation
Consider how easy or difficult it will be to install the compressor. It might be a better choice to select compressors that are simple to install, as long as the specifications are met. This is because, even though it might be cheaper to install a difficult-to-install compressor as a DIY project, if one is unable to install it properly, one might need to call in a professional. This will result in additional, unplanned costs.
Performance
Consider the performance of the compressor, like how well it maintains the set temperature and how fast it does that. Also, think about its energy use.
Price
Various Auto AC compressors are available in the market at different price points. Settle for a compressor that meets the specifications required and is within budget.
Noise
AC compressors produce different levels of noise. Some people are more sensitive to noise than others. Therefore, when selecting an AC compressor, take into account the noise level.
Replacing the AC compressor can be a DIY-friendly task if one has the right expertise. Below are the steps to follow while replacing the compressor.
Prepare the Car
Firstly, one needs to park the car in a well-ventilated and clean workspace. They should also disconnect the battery's negative terminal to ensure safety. The next step involves draining the refrigerant. This step is very crucial and must be done by a certified technician. The technician will ensure that the refrigerant is drained completely since it is harmful to the environment when released. After ensuring that the car's interior is protected from the refrigerant, one can go ahead and remove the battery.
Remove the Existing Compressor
After removing the battery, the technician or the car owner should locate the compressor, which is usually found in the engine bay. They should disconnect all the electrical connections and the AC hoses linked to the compressor. Once done, they should remove the pulley and the belt that rotates the compressor. The last step in removing the existing compressor involves unbolting the old compressor from the mounting and carefully removing it.
Install the New Compressor
The technician or the car owner should carefully place the new compressor on the mounting and secure it with bolts. They should install the pulley and belt, ensuring they are properly aligned. After that, they should reconnect all the AC hoses to ensure there are no leaks. The last step involves reconnecting the electrical connections to the compressor.
System Preparation and Final Assembly
Once the new compressor is installed, one should fill the AC system with the recommended amount of refrigerant and oil. They should also ensure the levels are accurate by using a certified AC recharge machine. After that, they should reconnect the battery's negative terminal and start the engine. Before reassembling the car's components, one should allow the AC to run and ensure it is blowing cooler air. They should also check for any leaks or unusual noises from the AC system and address them immediately.
Q1: What are the signs of a failing AC compressor?
A1: The compressor is the heart of the air conditioning system, so it shows many signs when it is failing. First, the users will not get cold air or the desired temperature from the AC when the compressor is faulty. Secondly, there will be a noticeable noise when the compressor is running. The noises include grinding, rattling, or squealing. The other sign is that the compressor is cycling on and off frequently. Lastly, there is visible leakage of refrigerant around the compressor.
Q2: Can someone recharge the AC compressor themselves?
A2: Yes, it is possible to recharge the AC compressor auto AC by using a recharge kit that is readily available. However, it is advisable to let a professional do the recharging. This is because the professionals have the necessary tools to handle the refrigerant and are trained to repair any malfunction that may occur during the process.
Q3: Can a car run without an AC compressor?
A3: Yes, a vehicle can run without a working AC compressor. The compressor is vital for the air conditioning system to circulate refrigerant and cool air. If the compressor is not working, the car can still run, but the air conditioner will not be functional.
Q4: How long does it take to replace an AC compressor?
A4: The time it takes to replace an AC compressor varies depending on the skill level of the technician, the make and model of the car, and the accessibility of the compressor. On average, it can take anywhere from 2 to 5 hours. The time can be longer for complex models or if there are additional components that need to be removed.
Q5: Does the AC compressor need to be replaced every time there is a problem?
A5: No, it is not mandatory to replace the compressor every time there is a problem. The issues can sometimes be resolved by repairing the compressor. However, if the compressor is severely damaged or if the repairs are not effective, then replacement might be necessary.
