G. How to charge nitrogen gas into back head and accumulator

a) Back head gas charging

1. Open valve cap. 2. Connect hose to adapter.

3. Close gas cylinder valve, connect gas 4. Fit adapter on the inlet port by tightening charging kit to gas cylinder, close middle section of adapter. 3-way valve and drain cock.

5. Tighten top section of adapter. 6. Open gas bottle valve SLOWLY.

Quick valve opening may cause damage on the gauge.

7. Open 3-way valve slowly, charge N2 8. Drain the gas to 16~18 kg/cm² upon gas up to 20 kg/cm², close the valve. ambient temperature of job site.

9. Close inlet port by loosening top section 10. Disassemble adapter from the inlet of adapter. port by loosening middle section of adapter.

11. Assemble valve cap to the inlet port.

b) Accumulator gas charging

Accumulator gas charging valve is same as back head gas charging valve. Charging accumulator gas can be done in the same way as illustrated earlier for back head.

NOTE! Carry out gas charging only after the breaker has been sufficiently cooled down. Ensure that the breaker is lying on the floor and work tool shall not be pushed into power cell.

NOTE! When storing gas bottle, ensure the bottle is not exposed to the sun and its valve is always closed.