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Le compresseur de ma micro-station est en panne, que faire?

The compressor of my micro-station has broken down, what should I do?

The failure of a compressor in a small wastewater treatment plant (air pump/compressor) can cause serious issues, compromising the proper functioning of your wastewater treatment system.

It is crucial to resolve this problem quickly to avoid performance issues and potential nuisances. What should you do when your small treatment plant's compressor breaks down? This article will guide you through the necessary steps to diagnose and resolve this issue, while explaining how the Foudebassin team can assist you.

Airthe compressor provides oxygen to the bacteria that treat the water
Diaphragmsthe most common wear part
4 checkscurrent, heat, noise, airflow
2 outcomesrepair with a kit or replace with an equivalent

Understanding the role of the compressor in a small treatment plant

The compressor is an essential part of your small wastewater treatment plant. It provides the air necessary for the biological process that breaks down the organic matter present in wastewater. A compressor failure can lead to a reduction in available oxygen, thereby disrupting bacterial activity and decreasing purification efficiency.

How air circulates in a small treatment plant

To diagnose correctly, you need to visualize the path of the air. The compressor (also called an air pump or blower) draws in ambient air and pushes it through a hose to one or more diffusers placed at the bottom of the aeration tank. Fine bubbles provide oxygen to the bacteria that degrade organic matter. Depending on the model of the treatment plant, air is sent continuously or in cycles controlled by an electrical cabinet.

Le trajet de l'air Compresseur hors de l'eau, au sec et ventilé tuyau d'air Cuve d'aération diffuseur bactéries Pannes fréquentes : filtre à air, membranes, tuyau plié ou percé, diffuseur colmaté
The compressor is just one link: a kinked hose or a clogged diffuser will give the same symptoms as a tired pump.

Steps to follow in case of a compressor breakdown

  1. Check the power supply: Ensure that the compressor is properly powered. Check fuses, circuit breakers, and electrical connections.
  2. Inspect the compressor: Look for visible signs of damage or wear, such as disconnected cables, burnt components, or broken parts. If the air pump (compressor) is too hot, that is not normal.
  3. Listen for abnormal noises: A faulty compressor may make unusual noises, indicating internal problems. Often, it will be a torn diaphragm or a worn valve that will damage the magnets or your pistons in the long run.
  4. Consult the manual: Your treatment plant's manual may provide specific instructions for diagnosing and resolving common compressor issues.
Safety first: always unplug the compressor before opening its cover or handling its connections. It is installed outdoors, often near water: never work on a device that is powered or wet. If you are in doubt about the electrical installation, call an electrician.

Rapid diagnosis based on symptoms

Most compressor failures can be identified by a specific symptom. This chart helps you narrow down your search before calling a technician or ordering a part.

Que fait votre compresseur ? Il ne démarre pas du tout Prise, disjoncteur, fusible, armoire de commande, câble → Contrôle électrique Il tourne, mais souffle peu ou claque Membrane déchirée, soupape usée, filtre à air encrassé → Kit membranes et soupapes Il chauffe ou sent le brûlé Bobine, aimant ou piston abîmé, surpression dans le circuit → Débrancher, faire contrôler Il tourne, mais pas de bulles Tuyau plié, percé ou débranché, diffuseur colmaté → Vérifier le circuit d'air
A compressor that blows "into the void" or against a blocked diffuser wears out much faster.
Note the brand and model shown on the compressor's nameplate, as well as its flow rate (in liters per minute), before contacting us. With this information, we can identify the right repair kit or an equivalent pump.

Solutions for a compressor breakdown

  1. Repair or replacement: Depending on the severity of the failure, you may need to repair or replace the compressor.
  2. Call in professionals: If you cannot solve the problem yourself, it is recommended to contact experts.

Repair or replace: how to decide?

Situation Our advice
Low flow, rattling noise, recent compressor Replace diaphragms and valves with the kit adapted to the model
Magnet or mechanical parts damaged by a torn diaphragm Workshop repair if parts are still available
Old model, parts unavailable, internal electrical failure Replace with an equivalent pump (same flow rate, same pressure)
Repeated failures Check the location, ventilation, and air circuit before replacing

Choosing a replacement pump is not just about the brand: the air flow rate and operating pressure must match the specifications of your treatment plant's manufacturer. Our article how to choose an air pump for a wastewater treatment plant details these criteria, and our list of compressors by station helps you find the equivalent. You can also browse our entire range of air pumps and compressors for wastewater treatment plants.

During the breakdown: the right reflexes

Without air, the aerobic bacteria in the treatment plant slow down: the discharged water is less well-treated, and odors may appear. A few reflexes can limit the inconvenience while waiting for repairs.

  1. Act quickly. The longer the plant goes without aeration, the longer the biological restart will take.
  2. Moderate discharges. Avoid large laundry loads and major drainings if possible while aeration is not restored.
  3. Do not pour anything aggressive. Bleach, chemical drain cleaners, and solvents further inhibit bacteria.
  4. Notify your installer or maintenance service if your contract provides for it, especially if an alarm has been triggered on the cabinet.

If you find that there is simply no pump on your installation, read our article I have no pump in my treatment plant.

Preventing the next breakdown

A treatment plant compressor runs for many hours, often all year round. Its environment matters as much as its quality.

  • Install it in a dry, elevated, and ventilated area: never in a manhole that can fill with water. See our article where to place the compressor of a small treatment plant.
  • Regularly clean the air intake filter: a clogged filter puts strain on the pump.
  • Listen to it from time to time: a change in noise often indicates a worn diaphragm.
  • Plan for the preventive replacement of diaphragms and valves. For its pumps, Secoh advises maintenance about every 5 years, for example.
  • Keep a spare repair kit: it prevents leaving the plant without air for several days.

To learn more, check out our guide how to repair an air pump or aeration system.

Why choose Foudebassin for your wastewater treatment plant needs?

At Foudebassin, we understand the importance of a reliable wastewater treatment system. Here is why we are your best choice:

  1. Large stock of spare parts: We have the largest stock of spare parts for small wastewater treatment plants. Whether you need a new compressor or other components, we have what you need.
  2. Equivalent pumps for your treatment plant: Our team can help you find the current equivalent pump for your treatment plant, ensuring optimal compatibility and performance.
  3. Repair workshop near Brussels: Located just 25 km from Brussels, our repair workshop is equipped to handle all kinds of treatment plant repairs. Our experienced technicians can diagnose and repair your compressor quickly and efficiently.
  4. Expert customer service: Our team of specialists is always ready to help. Whether you need troubleshooting advice or wish to discuss your repair or replacement options, we are here to assist you.

Get in touch with the Foudebassin team

Do not let a compressor failure compromise the operation of your treatment plant. Contact us today for help:

  • Phone: Call us at 003210860354 to speak directly to an expert.
  • Email: Send us an email at support@foudebassin.com with the details of your problem and we will respond quickly.

Conclusion

A compressor failure in a small wastewater treatment plant requires rapid intervention to avoid issues and maintain good water treatment quality. By following the steps outlined in this article and utilizing Foudebassin's services, you can quickly resolve this problem and ensure the proper functioning of your system. With our large stock of spare parts, our expertise, and our repair workshop near Brussels, we are ready to help you every step of the way.

For more tips and services, visit our blog or contact us directly.

Frequently asked questions

How do I know if my compressor diaphragm is torn?

The compressor runs but the air flow drops significantly, it often makes an unusual rattling or vibrating noise, and the bubbles in the aeration tank decrease. Visual inspection is done with the compressor unplugged and the cover open.

Can I replace the diaphragms myself?

Yes, on most models, with the kit adapted to the exact brand and model, by following the instructions. Always unplug the device before working on it. If a magnet or a mechanical part is damaged, a workshop repair is preferable.

Can I use a compressor from another brand on my treatment plant?

Yes, provided that the air flow and operating pressure match those specified by the plant manufacturer. Our team can help you find an equivalent pump.

What happens if the treatment plant remains without air?

The bacteria that treat the water need oxygen. Without aeration, purification degrades and odors may appear. Air must therefore be restored quickly.

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