Airtac Solenoid Valve FAQ and Troubleshooting Suggestions

I. Common Issues During Equipment Operation

Solenoid valves often encounter several typical issues during operation, including:

  1. Noticeable valve body overheating;

  2. Intermittent operation;

  3. System air leakage;

  4. Slow response or failure to actuate;

  5. Abnormal control signal.

These phenomena are often related to installation, air quality, or electrical connection. The following sections will address these issues one by one.

II. What to Do About Valve Body Overheating?

Coil heating is normal during continuous operation. However, if the surface temperature exceeds the specified value (approximately $70^\circ\text{C}$), you should:

  • Check if the voltage is stable.

  • Ensure proper heat dissipation and ventilation.

  • If the operating frequency is high, consider using the Airtac high-frequency, heat-resistant coil version.

 

III. Solenoid Valve Fails to Actuate or Acts Slowly

 

Possible causes include:

  • Unstable power signal.

  • Spool jamming or affected by contaminants.

  • Air pressure is too low.

Suggested solutions:

  • Test the continuity of the control signal.

  • Clean the valve body interior.

  • Ensure air source pressure is $\geq 0.15 \text{ MPa}$.

If the problem persists, replacing the spool assembly may restore sensitivity.

 

IV. How to Troubleshoot System Air Leakage

 

Leakage points typically occur at the ports, seals, or valve plate connections. Troubleshooting methods:

  1. Use the foam detection method to identify the leakage point.

  2. Replace old seals with original Airtac spare parts.

  3. Inspect the threads for damage.

Long-term leakage not only wastes energy but also affects the accuracy of cylinder action.

V. Coil Damage or Electrical Abnormalities

If the coil burns out, you need to confirm:

  • Whether the voltage exceeded the rated range.

  • Whether the control system experienced current spikes (surges).

  • Whether the installation location is close to high magnetic field equipment.

Airtac coils support quick replacement, with options for waterproof or integrated plug-in types for easier maintenance.

 

VI. How to Maintain Long-Term Stable Operation of Solenoid Valves

 

  1. Use clean, filtered compressed air.

  2. Regularly drain moisture from the air source.

  3. Maintain stable air pressure.

  4. Test the actuation response speed quarterly.

  5. Install dust covers to prevent environmental particles from entering.

VII. Purchasing and After-Sales Advice

Airtac has a complete global distribution network and technical support system. If you encounter a fault that cannot be resolved on your own, it is recommended to contact an officially authorized distributor or service center for professional inspection and original part replacement.

VIII. Summary

Mastering the identification and handling of common faults is key to ensuring stable equipment operation. Thanks to high-quality design and comprehensive after-sales service, Airtac solenoid valves provide users with a durable and reliable automation control solution.

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