What is the method for charging refrigerant into a car?
2 Answers
The method for charging refrigerant into a car is: 1. Prepare tools and materials such as a car refrigerant recovery and charging machine and refrigerant; 2. Connect the pipelines of the car refrigerant recovery and charging machine to the high and low pressure pipes of the car's air conditioning system; 3. Perform a vacuum process on the car's air conditioning system; 4. Set the charging capacity, time, and type on the refrigerant recovery and charging machine; 5. The refrigerant recovery and charging machine will automatically start adding refrigerant. The effects of overcharging refrigerant include: 1. Increased pressure in the air conditioning system, causing the car's air conditioning high-pressure alarm to trigger frequently and interrupting the compressor's operation; 2. Reduced cooling effect; 3. Damage to air conditioning components; 4. Bursting of the car's air conditioning pipelines.
The method I use to recharge the car's refrigerant is to first ensure safety by wearing goggles and gloves, as refrigerant is harmful to the skin and eyes. Then, check the air conditioning system for leaks. If the system is leaking, recharging the refrigerant won't help—it needs to be repaired first. Find a suitable charging gun and connect it to the high and low-pressure ports on the car. Next, start the air conditioning system and let it run in maximum cooling mode. Slowly add refrigerant from a can while monitoring the pressure gauge to ensure the pressure stays within the normal range. Too low or too high pressure will affect cooling performance. Stay calm throughout the process and avoid rushing, as filling too quickly can cause bubbles. After finishing, check if the air conditioning's cold air has returned to normal. This can save on repair costs, but there are risks—if done incorrectly, it could damage components, so I only DIY occasionally after gaining experience. I usually recommend using eco-friendly refrigerant, as protecting the environment is important.
