How to fill the high-pressure end of automobile air-con […]
How to fill the high-pressure end of automobile air-conditioning refrigerant
The refrigerant will inevitably not decrease after the automobile air conditioner is used for a long time. The high pressure Car Refrigerant charging pipe end charging method means that the refrigerant is added to the system from the high pressure end of the air conditioning system.
① As shown in the figure, connect the manifold pressure gauge group with the system maintenance valve and refrigerant tank.
② Use the refrigerant to remove the air in the connecting hose. The specific method is: first close the high and low pressure manual valves, disconnect the high pressure end inspection valve and the hose connection, then open the high pressure manual valve, and finally open the valve. When the refrigerant gas is discharged from the hose, quickly connect the hose to the maintenance valve and close the high-pressure manual valve. Use the same method to remove the air in the connecting hose at the low pressure end, and then close the high and low pressure manual valves and the valves on the refrigerant cylinders.
③ Put the refrigerant tank upside down on the scale and record the initial mass.
④ Open the valve on the refrigerant bottle, and then slowly open the high-pressure manual valve. The refrigerant is injected into the system. When the scale indicates that the specified quality is reached, the refrigerant valve is quickly closed.
⑤ Close the high-pressure manual valve and the filling ends.