This reading is called the static pressure reading. Most air conditioning systems require at least 50 pounds per square inch (psi) of static pressure for proper diagnostics.3. Start the vehicle and turn the air conditioning to "Max" and "Recirculate," with the doors closed and windows open. Reading the manifold gauge fix is relatively child's play once it is hooked up correct.
Instructions
1. Connect the high- and low-pressure hoses of the manifold gauge place to the work Trimmings on the air conditioning action. Diagnose the Trimmings by the humble valves located on the air conditioning lines. The high-pressure becoming is on the thin column and the low-pressure becoming is on the thicker string and matches the colour of the gauge bezel. The third hose of the manifold gauge establish is craven and used when charging the development with refrigerant. After connexion, extended both the high- and low-pressure valves on the manifold gauge set to start the reading.
2. Read the gauges with the engine turned off.Connecting air conditioning gauges, very called a manifold gauge locate, is one shot half of the battle of properly diagnosing a vehicle's air conditioning problems. Be trained to glance at these gauges properly to include what is going on inside the manner. Manifold gauge sets consist of two sides, a high-pressure side and a low-pressure side. The low-pressure side typically has a blue-outlined dial face and glum hose, whereas the high-pressure gauge bezel and hose are brick.
4. Read the pressures on both the high- and low-pressure gauges. This reading is the air conditioning system's operating pressure. Notice the pressure readings rise and fall as the compressor turns on and off as it cycles. These readings should not go higher than the maximum or go lower than the lowest specification for the vehicle being tested.
