Shop Charging & Maintenance

Accumulator charging and maintenance kits are tools designed to safely pre-charge and maintain accumulators in hydraulic systems. These kits allow you to pressurize the gas side of the accumulator, ensuring it operates efficiently. We strongly recommend using high-purity dry nitrogen for pre-charging, as it’s safe and effective. Never use shop air or oxygen, as this could lead to dangerous explosions. Accumulators typically ship with a pre-charge of 25 psi for safety, but the ideal nitrogen pre-charge pressure varies by application. These kits are essential for keeping your accumulator in top working condition.

Energy Storage: 90% of the minimum system operating pressure

Shock Absorption: 60% to 75% of the normal working pressure

Pulsation Dampening: 60% to 80% of the normal working pressure

To ensure optimal and reliable accumulator performance, it's crucial to pre-charge and maintain the correct nitrogen pressure. Pre-charge pressure should be adjusted for operating temperatures and checked within the first week of operation. Regular maintenance is recommended every 3 to 6 months, depending on the application’s severity, with high cycling and high-temperature systems requiring more frequent checks. Always pre-charge the accumulator to the required pressure before starting the system to avoid bladder failure. Charging and gauging kits, which are designed to fit standard nitrogen bottles, come with detailed instructions to ensure safe operation. Regularly monitoring and maintaining the nitrogen pre-charge will extend the life of your accumulator.

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Still need help? Give us a call at 281.941.2310 or email us at sales@onehydraulics.com for technical support.