What are the specific steps for recharging car air conditioning refrigerant?
1 Answers
Car air conditioning refrigerant recharge specific steps are: 1. Prepare intact and qualified refrigerant and charging tools; 2. Connect the car air conditioning system to the charging tool adapter; 3. Inject liquid refrigerant from the high-pressure side. Methods to determine whether car air conditioning needs refrigerant recharge: 1. When the air conditioner is running, continuous bubbles appear in the sight glass of the pipeline, indicating low refrigerant level; 2. No bubbles appear whether the air conditioner is running or stopped, indicating excessive refrigerant; 3. No bubbles appear when the air conditioner is running, but briefly appear when stopped, indicating normal refrigerant level; 4. Open the hood and check if there are oil stains at the air conditioning system joints - oil stains indicate refrigerant deficiency.