March 25, 2011 How to choose a vacuum pump for your car Shop
A vacuum pump has several uses for the air conditioning mechanic and automotive auto business. A vacuum pump to remove the main purpose of the system of air and moisture from the air-conditioning systems automobile. The humidity is a serious threat to your car air conditioning. The moisture will move through the line of refrigerant as a fine mist and crystallize when it expands. In addition, if the humidity is mixed with refrigerant, it is extremely corrosive. You will not notice this damageuntil it is too late. A vacuum pump removes moisture, creating a vacuum in the air conditioner. The low pressure cook the moisture content at very low temperatures. This evaporates the water and vent out through the system.
Now the next question is, what type and size of the vacuum pump to better use. First, there are two guys who you meet. The cheapest is a venturi vacuum pump that goes from your shop air compressor. Venturi pumpare popular with mechanics at home together, because they are cheap and easy to use. However, they are limited to the fact that the vacuum is very difficult to cook, pumping out a lot of moisture with these types. It just does not want to pull an empty well, as you need. The most popular and best shop vacuum pumps are provided in a professional machine is a good electric vacuum pump. Any professional air conditioning mechanics and auto shop have at least one. You now haveto decide what to buy or rent a brand and model. Most pumps have a CFM rating on the box. This shows how much the volume of air you can remove the pump from the system. The pump can move more air, the faster it will reach the correct vacuum.
There are also two-stage and single stage pumps. The two-stage pumps faster and more efficient, but a single stage is to do the job. They are equipped with a vacuum pump for a car up to 10 tonnes, a 1.2cfm pump work. If you are working on a system of air conditioning in a large truck or camper, you probably need to spend 4 to a model CFM. Now you have chosen the right shop vacuum pump for your car, you need to properly maintain equipment. The main thing is to change often the oil of the vacuum pump. You should immediately change the oil if:
1. They have air conditioning, which was evacuated with contaminatedHumidity.
2. The air conditioning had a compressor burnout and evacuated the system.
The third vacuum pump oil looks "cloudy" or "milky".
4. Vacuum pump does not pull your work evaluated the micrometer.
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