Why Hydraulic Breakers Need Nitrogen and How to Charge Them

For excavator operators who frequently use hydraulic breakers, nitrogen filling is an essential process. However, many operators are unsure of how to properly add nitrogen. In this article, we'll explain why nitrogen is needed, how much to add, and the correct procedure for charging your hydraulic breaker.

 

Why Do We Charge Hydraulic Breakers with Nitrogen?

To understand the importance of nitrogen, we first need to look at the accumulator. The accumulator, which is filled with nitrogen, plays a crucial role in the performance of the hydraulic breaker. It stores the remaining energy from the previous blow and the energy from the piston recoil. During the next strike, it releases this stored energy, increasing the striking power. In essence, nitrogen helps to boost the breaker’s energy and performance. Therefore, the amount of nitrogen directly affects the hydraulic breaker’s efficiency and power.

 

 

 

How to Charge Nitrogen?

 

Follow these steps to properly charge your hydraulic breaker with nitrogen:

1. Connect the pressure gauge
   
    to the three-way valve, and turn the handle counterclockwise.
2. Attach the hose
   
    to the nitrogen cylinder.
3. Remove the screw plug
   
    from the breaker and install the three-way valve on the charging valve of the cylinder. Ensure the O-ring is properly installed on the three-way valve.
4. Connect the hose
   
    from the nitrogen cylinder to the three-way valve.
5. Release the nitrogen
   
    by turning the valve handle on the nitrogen cylinder counterclockwise. Then, slowly turn the three-way valve handle clockwise to set the specified pressure.
6. Close the three-way valve
   
    by turning the handle counterclockwise, and turn the nitrogen cylinder valve clockwise to close.
7. Remove the hose
   
    from the three-way valve, ensuring it is tightly closed.
8. Recheck the cylinder pressure
   
    by turning the three-way valve handle clockwise.
9. Detach the hose
   
    from the three-way valve and install the valve tightly on the charging valve.
10. Check the pressure
    
     by turning the three-way valve handle clockwise; the pressure value will be shown on the gauge.
11. Adjust nitrogen pressure
    
    : If the nitrogen pressure is too low, repeat steps 1-8 to reach the correct pressure. If the pressure is too high, slowly turn the regulator counterclockwise to release nitrogen until the pressure reaches the specified level.
12. Ensure proper sealing
    
    : Always check that the O-ring is installed on the three-way valve and that the pressure remains within the specified range.

 

By following these steps, you can ensure that your hydraulic breaker operates at its best, providing optimal performance for your excavator and enhancing productivity.

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