How to Install Mechanical Seals in Centrifugal Pumps
Introduction
Just fitting a centrifugal pump in your plant is not enough, you need to ensure its efficiency and longevity with smooth operation. To eliminate leakages and prevent early damage to the whole system, we recommend you install mechanical seals in your centrifugal pumps.
After installing mechanical seals in centrifugal pumps, you will be able to keep your pump system in a conveying motion. However, many manufacturers find difficulty in installing mechanical seals in centrifugal pumps.
To solve the installation issues, we are here to discuss the process of mechanical seal installation in centrifugal pump. Read the blog and get perfect guidance on installing mechanical seals in a centrifugal pump.
How Do Mechanical Seals Work in Centrifugal Pumps?
A mechanical seal in a centrifugal pump has two soft and flat surfaces. One surface rotates with the shaft, while the other stays still with the casing. The seals such as O-rings or gaskets keep both surfaces in place and help to manage misalignments and wear them with flexibility.
When the fluid is being pumped into the system, the mechanical seals lubricate the seal surfaces and reduce the leakage of the fluid in the centrifugal pumps.
How to Install Mechanical Seals in Centrifugal Pumps?
Installing a mechanical seal in a centrifugal pump has a systematic process to follow. From turning off the pump and removing the old seal to carefully placing a new mechanical seal in the pump, this process requires accuracy and care.
Here’s our step-by-step process on how to install mechanical seals in centrifugal pumps.
Process of Mechanical Seals Installation in Centrifugal Pumps
1. Turn Off the Power
Before you start, make sure the pump motor is turned off. Cut off the power supply to stop the pump while you install the mechanical seal.
2. Run the Pump Casing
Open the inlet and outlet valves to separate the pump. Take out the casing drain plug to empty any fluid in the pump. It will stop fluid leaks while taking apart the pump and mechanical seal.
3. Disconnect the Pump
Disconnect the pump from the motor shaft or take out the whole pump assembly to install the mechanical seal on a centrifugal pump.
4. Remove the Impeller
As per the design of the pump, you may need to remove the bolt that secures the impeller to the shaft for continuing the installation.
5. Remove the Old Seal
Now, remove the rotating parts from the shafts by using fixed screws. Then disconnect the fixed old seal while being careful and not to damage anything.
6. Clean and Inspect Components
Clean the shaft and all parts with a damp cloth before putting on the new mechanical seal. Make sure the new seal fits your centrifugal pump’s standards and has no faults.
7. Install the New Mechanical Seal
Now just fit the fixed part of the mechanical seal, making sure it’s aligned well. Apply a little lubricant to the shaft and slide the moving part of the seal above it to ensure its secure.
8. Reinstall the Impeller
After placing the mechanical seal, put the impeller back on. either screwing it on or using the impeller bolt, just ensure the new O-ring or gasket is correctly positioned.
9. Reassemble the Pump
Reassemble the centrifugal pumps by making sure all parts are aligned correctly and adhering to the pump’s installation manual.
10.Check Alignment and Vent
Once you put the pump back together, check if the pump and motor are aligned. They should be within standard tolerance to avoid seal problems.
11. Restart the Pump
Fill the pump casing again, open the inlet and outlet valves, reconnect the power, and turn on the centrifugal pump. Monitor for leaks, strange sounds, or vibrations. If you notice any problems, stop the pump and check the installation again.
12. Follow Safety Precautions
Always check the safety rules in the pump’s manual. Make sure to follow the manufacturer’s safety precautions.
Tips for Successful Mechanical Seal Installation in a Centrifugal Pump
- Clean your hands well to stop oils or dirt from touching the seal.
- Avoid touching the polished seal fronts to keep them in good condition.
- Use tissue paper in the work area to prevent dirt during installation.
- Do not place the seal on its front to stop leaks or corrosion.
- Clean the seal holes with soft tissue and a suitable cleanser before installing.
- Always follow the manufacturer’s instructions.
- Keep all parts of the seal clean and separate it from oily or dirty surfaces.
- Check the pump regularly after installation to ensure the mechanical seal works well.
- Ensure a clean environment during installation for the ideal performance.
Sujal Engineering – Your Reliable Centrifugal Pump Manufacturer
Sujal Engineering is your reliable choice for centrifugal pumps with mechanical seal installation. With more than 20+ years of experience in centrifugal pump manufacturing, we specialize in troubleshooting, selecting, applying, and repairing mechanical seals.
Connect with us for the best quality centrifugal pumps across industries like petroleum refining, chemicals, food and beverage, water and wastewater, power, etc. Our skilled in-house pump repair teams are certified to provide a range of industrial pumps with all kinds of mechanical seals.
Bottom Line
Following this installation process of mechanical seals in a centrifugal pump, you can make your pump system free and fair. However, there are many pumps operators who find difficulty in finding the right mechanical seal with numerous options available. Even the wrong mechanical seal can create further problems by not meeting the specific application of centrifugal pump.
But that’s not the case when Sujal engineering, a leading industrial pump manufacturer in India, is here to help you with selecting, installing, and maintaining your mechanical seals. Contact us today to find the best centrifugal pumps with leakage-free mechanical seals.
