First, you need to use dry nitrogen gas to pre-charge the accumulator, as it is an inert gas that does not react with hydraulic oil or other chemicals. Never use oxygen or compressed air, as they can cause fire or explosion when mixed with hydraulic oil. Second, you need to use a charging rig that matches the type and style of the accumulator.
Accumulators are crucial components in hydraulic systems, providing energy storage and pressure regulation. Proper maintenance, including nitrogen charging, ensures optimal performance and longevity. This guide outlines the nitrogen charging procedure for accumulators, ensuring safe and efficient operation.
This guide outlines the nitrogen charging procedure for accumulators, ensuring safe and efficient operation. Accumulators store hydraulic energy by compressing a gas (usually nitrogen) in a chamber. This energy is then released to maintain pressure, absorb shocks, and compensate for fluid leakage or thermal expansion.
NEVER use air or oxygen, due to the danger of combustion/explosion. Accumulators must be pre-charged with dry nitrogen for correct functioning. Pre-charging may be performed prior to or following installation. Hydraulic pressure must not be introduced into accumulators prior to pre-charging, especially bladder-type accumulators.
Regular nitrogen charging is vital for maintaining accumulator performance and extending the lifespan of your hydraulic system. By following this detailed procedure and adhering to safety precautions, you can ensure efficient and safe nitrogen charging for your accumulators.
The hose connects the charging rig to the nitrogen bottle, the gauge displays the pre-charge pressure, the gas chuck attaches to the accumulator’s gas valve, and the bleed valve releases excess nitrogen. Third, you need to release any pressure at the accumulator inlet and drain any oil from the accumulator.