ow to properly erect Twin Lobe Roots Air Blowers in STP/ETP, the problems caused by incorrect installation, and how to rectify issues like back pressure, oil leakage, overload, noise, and frequent breakdowns

How to Erect Twin Lobe Roots Air Blowers for STP/ETP – Avoid Failures with SVBLOWERS' Recommended Best Practices

you tube video link : https://youtu.be/drE09uKqvr0

Proper installation of twin or tri-lobe Roots air blowers is the foundation of reliable and efficient aeration in Sewage Treatment Plants (STP) and Effluent Treatment Plants (ETP). At SVBLOWERS, we emphasize manufacturer-recommended erection practices that ensure optimal airflow, reduced power consumption, and long blower life.

✅ Recommended Blower Erection Based on Tank Height

• For tanks up to 2–3 meters in height, blowers can be safely installed at the bottom of the tank. This maintains steady airflow without back pressure.

• For tanks above 3 meters, never install blowers at the bottom. Instead, erect them at the top of the tank to prevent resistance and ensure uninterrupted airflow.

❌ Problems Caused by Wrong Blower Installation

Improper erection—especially installing blowers at the bottom of tall tanks or using poor pipeline layouts—can result in:

🔴 1. Excessive Back Pressure

When a blower is installed below a tall tank, the resistance from water column height creates high back pressure. This can exceed the blower’s rated discharge pressure and cause:

• Drop in airflow volume.

• Overheating of blower components.

• Pressure surges, leading to vibrations.

🔴 2. Oil Leakage & Seal Failure

High internal temperatures due to back pressure can thin out gear oil, reducing its viscosity. This leads to:

• Seal damage.

• Gearbox overheating.

• Frequent oil leakage, especially from shaft seals.

🔴 3. Motor Overload & Power Trip

Back pressure increases the load on the motor, causing:

• Higher current draw.

• Motor overheating.

• Frequent electrical tripping and power overload issues.

🔴 4. Excessive Vibration & Noise

Improper airflow due to bends, pipe size reductions, and installation below water level increases:

• Mechanical stress.

• Heavy noise and high vibration, making the blower noisy and less stable.

🔴 5. Frequent Breakdowns and Service Calls

The combination of heat, oil failure, and overload leads to:

• Shortened blower life.

• More frequent spare part replacements.

• High service and maintenance costs.

🔧 How to Rectify These Common Blower Issues

✅ 1. Follow Correct Erection Height Guidelines

• Install blowers at tank top if tank depth is above 3 meters. This eliminates water head pressure and protects blower integrity.

✅ 2. Maintain Proper Pipeline Design

• Avoid sudden pipe diameter reduction.

• Prevent sharp bends or multiple elbows.

• Use non-return valves (NRV) and pressure relief valves (PRV) to manage flow and prevent pressure shocks.

✅ 3. Ensure Correct Lubrication

• Use high-quality SAE 90 or SAE 140 gear oil.

• Maintain oil level between MIN and MAX marks.

• Avoid running blowers without oil even for a minute.

✅ 4. Install Ventilation for Blower Rooms

• Ensure blowers are in a well-ventilated area.

• Avoid hot or enclosed rooms for air-cooled blower models.

✅ 5. Use Temperature-Based Control Systems

• Implement timer-based or temperature-based PLC control panels.

• Alternate between two blowers to prevent thermal buildup and extend life.

✅ 6. Regular Maintenance

• Daily: Check oil level, noise, and air discharge.

• Weekly: Inspect air filters and foundation bolts.

• Monthly: Check belt alignment, oil quality, and overall temperature.

• Annually: Perform gear inspection and overhaul seals and bearings.

🌟 Why SVBLOWERS?

With over 20 years of experience and 7000+ blowers in operation across India, SVBLOWERS offers:

• Correct installation support.

• Custom erection layout planning.

• Genuine spares and technical assistance.

• Blower selection guidance for STP, ETP, aquaculture, cement, and pneumatic systems.

📍 Serving all major cities: Chennai, Bengaluru, Coimbatore, Hyderabad, Kochi, and beyond.

📞 For expert support & service
🌐 Visit: www.svblowers.in
📧 Email: [email protected]

• how-to-erection-svblowers-2025.pdf 1 MB