How to read the car air conditioner plus fluoride meter
As the temperature rises in summer, the frequency of automobile air conditioners also increases. When the air conditioner is not refrigerated, it may be that the refrigerant (fluorine) is insufficient. At this time, it is necessary to use a fluorine meter to detect and replenish. This article will introduce in detail how to correctly read the fluoride table of the car air conditioner and attach relevant data to help car owners and maintenance personnel operate better.
1. Basic structure of automotive air conditioner plus fluoride meter
Automobile air conditioner fluoride meter is usually composed of a high-pressure gauge and a low-pressure gauge, which is used to measure the pressure on the high-pressure and low-pressure side of the air conditioner system, respectively. Here are the main components of the fluoride table:
| Part Name | Function description |
|---|---|
| High voltage gauges | Displays the pressure on the high-pressure side of the air conditioning system, usually with a red scale |
| Low voltage meter | Displays the pressure on the low-pressure side of the air conditioning system, usually in blue scale |
| Connecting hose | Used to connect fluoride meter and air conditioning system |
| valve | Control the flow direction of refrigerant |
2. How to read the data of the fluoride table
When reading a fluoride meter, you need to pay attention to the values of high-pressure meter and low-pressure meter and compare it with the standard values. The following are the air conditioning pressure reference values for common models:
| Car model | Low-pressure side pressure (PSI) | High Pressure Side Pressure (PSI) |
|---|---|---|
| Family car | 25-45 | 150-250 |
| SUV | 30-50 | 160-270 |
| Business car | 35-55 | 170-290 |
Notes:
1. When reading data, make sure the engine is in operation, the air conditioner is turned on and adjusted to maximum cooling mode.
2. The ambient temperature will affect the pressure value. It is recommended to conduct testing in an environment of 20-30 degrees Celsius.
3. If the pressure value is abnormal, it may indicate that there is leakage or blockage in the air conditioning system, and further inspection is required.
3. Judgment of abnormalities in fluoride table
Through the reading of the fluoride meter, the cause of the failure of the air conditioning system can be preliminarily judged. The following are common abnormalities and possible causes:
| Anomaly | Possible Causes |
|---|---|
| Low pressure side pressure is too low | Insufficient refrigerant, failure of expansion valve |
| Excessive pressure on the high pressure side | Poor heat dissipation of the condenser and excessive refrigerant |
| The pressure on both high and low pressure sides is too low | There is a leak in the system |
| The pressure on both high and low pressure sides is too high | Excessive air or refrigerant in the system |
4. Operation steps
1.Connect the fluoride table:Connect the fluoride meter hoses to the high-voltage and low-voltage interfaces of the air-conditioning system respectively.
2.Start the engine:Turn on the air conditioner and adjust to the maximum cooling mode to keep the engine speed at 1500-2000 rpm.
3.Read data:Observe the readings of high and low pressure gauges and compare them with the standard values.
4.Refrigerant supplement:If the pressure is too low, refrigerant can be replenished through the low pressure side until the pressure returns to normal.
5.Check for leaks:If the pressure is abnormal, check whether there is any leakage in the system and repair it if necessary.
5. Safety precautions
1. Wear protective gloves and glasses during operation to avoid refrigerant from touching the skin or eyes.
2. Refrigerant is a flammable and explosive substance and needs to be kept away from the fire source.
3. If you are not familiar with the operation, it is recommended to seek help from professional maintenance personnel.
Summarize
Correct reading of the fluoride meter of the car air conditioner is a key step to ensure the normal operation of the air conditioner system. Through the introduction of this article, I hope you can master the use of fluoride tables and pay attention to safety in actual operation. If you encounter complex problems, it is recommended to contact professional maintenance personnel in time to avoid greater losses due to improper operation.
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