Does car vacuuming extract high pressure or low pressure?
2 Answers
When evacuating a car's air conditioning system, both high and low pressure sides are vacuumed simultaneously to ensure thoroughness. Additional relevant information is as follows: 1. Evacuation duration: Since air and moisture must be completely removed from the refrigeration system, the typical evacuation time is 30 minutes. 2. AC malfunctions: Refrigerant leakage is the primary cause of car AC failures. After identifying and fixing leaks, a pressure test (typically 20-30 Bar) must be conducted to verify system integrity. Only when pressure stabilizes within this range - indicating resolved leaks and proper sealing - can vacuuming and refrigerant recharge procedures commence.
As a novice driver just starting out, I used to wonder which end of the car's air conditioning system should be vacuumed. When learning auto repair, I asked technicians who explained that vacuuming primarily targets the low-pressure side. This is because the low-pressure port of the AC system has lower pressure, making it easier for the vacuum pump to remove pesky air and moisture. When I tried doing it myself, I accidentally connected to the high-pressure side - the pump made strange noises and nearly got damaged. Through continued learning, I discovered that proper vacuuming of the low-pressure side significantly improves cooling performance. Now during summer road trips, the AC cools much faster, making drives far more comfortable. During every maintenance session, I carefully supervise the process to ensure proper procedure and avoid issues. Proper vacuuming is a crucial maintenance step - done correctly, it saves both hassle and money.
