Fig. 18.26. Refilling the air conditioning system from a cylinder: 1 – valve open; 2 – valve closed; 3 – container with refrigerant; 4 – charging valve; 5 – transition valve; 6 – blue charging hose; 7 – quick release coupling (low pressure)
1. Unscrew the filling valve handle as far as it will go (the valve is open) and insert it into the filling cylinder (Fig. 18.26).
2. Unscrew the handle of the transition valve until it stops (the valve is closed) and insert it into the filling valve.
3. Connect the blue filling hose to the transition valve.
4. Connect the quick-release coupling (low pressure lines) to the blue filling hose.
5. Turn the filling valve handle all the way (valve closed) to pierce a hole in the cylinder.
6. Turn the handle of the transition valve and remove the air.
7. Connect the quick coupling (low pressure lines) to the low pressure service valve.
8. Start the engine.
9. Turn on the air conditioner and set the air temperature control knob to the maximum cooling position ("MAX COOL").
Attention! 10. Set the engine speed to 1500 min⁻¹
11. Close the handle of the transition valve (the valve is open) and fill the system with the required amount of refrigerant, observing its level through the sight glass.
Caution! Do not allow the filling cylinder to turn over, as this may cause liquid refrigerant to enter the compressor and damage it. Only installing the cylinder in a vertical position will ensure that the refrigerant is filled in a gaseous state.
12. After refueling is complete, unscrew the handle of the transition valve as far as it will go (the valve is closed) and remove the quick-release coupling.
Attention! If there is any refrigerant left in the filling cylinder, close the filling valve and transition valve completely and store the cylinder until the next filling.