Nitrogen Gas Charging Kit Charging Device for Hydraulic Rock Hammer

Why Choose the Genuine SLYM Charging Device?

1. Zero-Leak Quick Connectors: Precision-machined interfaces ensure a 100% seal for accurate static pressure readings.

2. Vibration-Dampened Gauge: Built for harsh mining and construction environments, providing stable readings without needle flutter.

3. Reinforced High-Pressure Hose: Rated for safety even during accidental pressure spikes.

4. Professional 3-Way Valve: Allows for micro-adjustments during the charging and discharging process.

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Technical Service Guide: Nitrogen Maintenance

Back Head (Gas Chamber) Adjustment

To maintain steady performance, check your back head pressure every 2 weeks.

1. Check: Connect the 3-way valve, ensure the bleed valve is closed, and press the switch to read the pressure.

2. Refill: Connect to the N2 cylinder. Use the "3-Charge & 3-Discharge" principle—fill and release a small amount 3 times to purge air and ensure 100% Nitrogen Purity.

3. Accuracy: Refer to your model's manual for specific PSI/Bar settings.

Accumulator Pressure Management

The accumulator protects your system from hydraulic shocks. Check this monthly.

1. Standard Pressure: Usually 55-60 Bar (at room temperature).

2. Operation: Loosen the cap nut, turn the charging valve until the gauge moves, and adjust to the target level.

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⚠️ Safety & Warning Protocols

• Bolt Safety: NEVER remove through-bolts or the accumulator cover before using this device to completely discharge all N₂ gas.

• Gas Purity: Use ONLY pure Nitrogen (N₂). Using oxygen or other gases can lead to equipment failure or internal explosions.

• Seal Health: If the gauge shows "Black Oil" contamination during bleeding, your seal kits need immediate replacement.

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Packing List

• 1 x High-Precision Pressure Gauge (Dual Scale: PSI / Bar)

• 1 x Professional 3-Way Control Valve

• 1 x High-Pressure N₂ Charging Hose (1.0m)

• 1 x Rugged Heavy-Duty Carrying Case

• 1 x SLYM Technical Instruction Manual 

Q1: Why is the N₂ pressure different for the back head and the accumulator?

Technician's Answer: They serve different purposes. The Back Head pressure acts as a "gas spring" that drives the piston down for impact. The Accumulator pressure (usually 55-60 Bar) acts as a "cushion" to absorb hydraulic spikes and protect your excavator's pump. Using the SLYM Precision Gauge ensures you don't confuse the two.

Q2: Can I use compressed air instead of Nitrogen?

Technician's Answer: Absolutely not. Compressed air contains oxygen and moisture. Oxygen can cause an internal explosion when mixed with hydraulic oil under high pressure, and moisture will cause the internal cylinder and piston to rust. Always use 99.9% pure Nitrogen (N₂).

Q3: My gauge shows a reading, but the breaker still has no power. Why?

Technician's Answer: If your N₂ pressure is correct but the hit is weak, check the Chisel-to-Bushing gap. If the gap is over 5mm, the energy is being lost through vibration. Also, check your hydraulic oil temperature—if the oil is overheating, the breaker will lose efficiency regardless of gas pressure.

Q4: How do I know if the internal diaphragm in my accumulator is broken?

Technician's Answer: If you refill the accumulator to 60 Bar and the pressure drops to zero almost immediately, or if you see hydraulic oil leaking out of the N₂ charging valve, the diaphragm is likely ruptured. You should order a SLYM Replacement Diaphragm along with this charging kit.

Q5: Why does SLYM recommend the "3-Charge & 3-Discharge" method?

Technician's Answer: When you connect a hose, a small amount of air enters the line. By filling and releasing a small amount of gas three times, you "flush" out the atmospheric air, ensuring that only pure nitrogen remains in the chamber. This prevents internal oxidation and ensures consistent striking force.