The main business of the company is: bladder accumulator, Diaphragm accumulator, Piston Type Accumulator, oxygen cylinder, CO2 cylinder, gas cylinder, nitrogen gas cylinder, Welcome to inquire and negotiate cooperation by phone.
About    |    Contact


Basic fault diagnosis and handling of accumulator

Accumulators in hydraulic systems are essential for energy storage, pulsation dampening, and shock absorption. Proper fault diagnosis and handling are critical to maintaining system efficiency and safety. Here is a structured approach to diagnosing and handling accumulator issues:

Fault Diagnosis

  1. Pressure Problems:
    • Symptom: System pressure too low or too high.
    • Possible Causes:
      • Incorrect pre-charge pressure.
      • Leaks in the hydraulic system.
      • Faulty pressure relief valve.
    • Diagnosis:
      • Measure pre-charge pressure with a pressure gauge.
      • Inspect the system for visible leaks.
      • Test the pressure relief valve to ensure it is functioning correctly.
  2. Fluid Leakage:
    • Symptom: Fluid visible around the accumulator.
    • Possible Causes:
      • Worn or damaged seals/bladders.
      • Cracks or damage in the accumulator shell.
    • Diagnosis:
      • Perform a visual inspection of seals, bladders, and the shell.
      • Conduct a pressure test to identify the source of leaks.
  3. Unusual Noises:
    • Symptom: Knocking or hissing sounds.
    • Possible Causes:
      • Air entrapped in the hydraulic fluid.
      • Loose internal components.
    • Diagnosis:
      • Bleed the hydraulic system to remove air.
      • Inspect internal components and ensure they are secure.
  4. Slow System Response:
    • Symptom: Delayed hydraulic system response.
    • Possible Causes:
      • Accumulator not discharging properly.
      • Blockages in hydraulic lines.
    • Diagnosis:
      • Check the discharge rate of the accumulator.
      • Inspect hydraulic lines for any blockages or restrictions.
  5. Overheating:
    • Symptom: Accumulator or hydraulic system running hotter than normal.
    • Possible Causes:
      • Excessive use leading to overheating.
      • Incorrect hydraulic fluid viscosity.
    • Diagnosis:
      • Monitor the system’s temperature.
      • Verify that the hydraulic fluid viscosity matches the manufacturer’s specifications.

Handling and Maintenance

  1. Regular Inspections:
    • Schedule routine inspections for wear, damage, and leaks.
    • Regularly check and adjust pre-charge pressure as necessary.
  2. Proper Pre-Charge Procedures:
    • Use nitrogen gas (never use oxygen or air) for pre-charging.
    • Follow manufacturer’s specifications for pre-charge pressure.
    • Use the correct tools and safety equipment during pre-charging.
  3. Leakage Management:
    • Immediately replace damaged seals, bladders, or other faulty components.
    • Apply appropriate sealing compounds and techniques as recommended by the manufacturer.
  4. Maintaining Cleanliness:
    • Keep the hydraulic system clean to prevent contamination.
    • Use clean, filtered hydraulic fluid and change it as recommended.
  5. System Monitoring:
    • Install sensors and gauges to continuously monitor pressure, temperature, and fluid levels.
    • Set up alarms to alert for critical conditions.
  6. Safety Protocols:
    • Always follow safety protocols due to the high pressures involved.
    • Depressurize the system before performing maintenance or repairs.
    • Wear appropriate personal protective equipment (PPE).
  7. Training:
    • Ensure personnel are trained in the proper handling and maintenance of accumulators.
    • Provide regular training updates to keep up with the latest maintenance and safety procedures.

Troubleshooting Guide

SymptomPossible CauseDiagnostic StepsCorrective Action
Pressure too lowIncorrect pre-charge pressureCheck pre-charge with gaugeAdjust pre-charge pressure
Fluid leakageDamaged seals/bladdersVisual inspectionReplace seals/bladders
Unusual noiseAir in systemBleed systemBleed air from system
Slow responseBlocked hydraulic linesInspect lines for blockagesClear blockages
OverheatingExcessive use/improper fluidMonitor temperatureAllow cooling/use proper fluid


Effective diagnosis and handling of an accumulator require regular inspections, maintaining correct pressure levels, ensuring system cleanliness, continuous monitoring, adhering to safety protocols, and regular training of personnel. These practices ensure the hydraulic system operates efficiently and safely.



Leave a Reply