Maintenance Tips for Pumps

Category: Blog

Pumps are vital in various industries, necessitating regular maintenance to prevent costly breakdowns and ensure efficient operation.

This guide highlights the importance of such maintenance, focusing on extending the pump lifespan and enhancing performance.

Tsurumi pumps, known for their robust design and reliability, require specific maintenance practices. This includes regular checks, adherence to operating ranges, and specialized care for components like impellers and electrodes.

Understanding and addressing these unique requirements is crucial for maintaining the efficiency and effectiveness of Tsurumi pumps, making them a long-term, reliable asset in any operational setting.


Regular Maintenance and Inspection

Regular maintenance of pumps is crucial for ensuring their longevity and efficiency. Routine checks and repairs prevent unexpected breakdowns, which can be costly and disruptive to operations.

Well-maintained pumps operate more smoothly, use less energy, and have a longer lifespan, providing significant cost savings over time.

Additionally, regular maintenance ensures safety in the operational environment, reducing the risk of incidents caused by equipment failure.

Inspection Schedule

  • Monthly Insulation Resistance Check

    Monthly checks are essential to ensure the insulation resistance remains above the recommended level of 1MΩ. This helps prevent electrical faults and enhances the pump’s safety and efficiency.

  • Half-Yearly or scheduled hours Oil Inspection

    Inspecting the oil every six months is critical for identifying potential issues. This should include checking for oil contamination or degradation, which can significantly affect pump performance.

  • Performance Monitoring

    Continual monitoring of pump performance is necessary to detect any declines in efficiency. A drop in performance greater than 15% warrants immediate inspection.

Specific Maintenance Recommendations

  • Oil Maintenance: Replace oil every 12 or 24 months. If the oil becomes milky, it indicates a need to replace the mechanical seal.

  • Component Replacement: Regularly inspect and replace components like packing, o-rings, v-rings, pump shaft sleeves, and mechanical seals (every 2 years) as needed.

General Maintenance Frequency Guidelines

  • Weekly: A brief 20-30 minute inspection to identify any immediate concerns.

  • Monthly: Another 20-30 minute check for a more thorough inspection.

  • Annually: A comprehensive 2-3 hour maintenance session, including tasks like visual inspection of oil levels, equipment wear and performance logging.

These maintenance frequencies are general guidelines and should be adjusted based on the pump’s operating conditions, duty, and importance in the system.

Regular maintenance is key to reducing unexpected failures and minimizing total ownership costs.

Operational Guidelines

In this section, we explore essential operational guidelines for pump maintenance, focusing on optimal operating conditions and best practices for handling and usage to ensure the longevity and efficiency of your pump system.

Running Pump Regularly

Regular operation of the pump is essential, even if it remains immersed in water. This prevents stagnation and ensures all parts remain in working condition. For pumps not in constant use, operating them at least once a week is advisable.

Operating within BEP Range

The Best Efficiency Point (BEP) is a critical parameter for pump operation. Running the pump within the BEP is essential for maintaining its efficiency and longevity. Operating outside this range can lead to premature wear, especially on the impeller.

Performance Monitoring

Monitoring the pump’s performance is crucial. A drop in performance of more than 15% should trigger an immediate check to diagnose and rectify any issues.

Voltage and Amperage Monitoring

Daily monitoring of voltage and amperage is a key aspect of pump maintenance, particularly for electrically powered pumps. Fluctuations in voltage or unusual amperage readings can indicate electrical issues that may affect pump performance.

By tracking these parameters daily, it’s possible to identify electrical problems early on, such as short circuits, overloads, or wiring issues. Addressing these electrical concerns promptly ensures the continued efficient and safe operation of the pump.

Handling and Usage

  • Correct Lifting Techniques: When moving a pump, it’s important to use proper lifting techniques. Avoid lifting the pump by the cable as this can cause damage. Instead, use designated lifting points or handles.

  • Monitoring Water Levels: Maintaining the correct water level is critical for pump operation. The water level should be equal to or above the Continuous Running Water Level (C.W.L) to ensure efficient functioning.

  • Long-Term Storage and Inactivity: If the pump is not going to be used for an extended period, it should be pulled up, allowed to dry, and stored indoors. Every two years, the pump should be rotated to check for oil leaks.

  • Impeller Maintenance: The impeller should be kept clear of debris and cleaned occasionally. Ensure the pump operates within the recommended pump curve to avoid undue stress and wear on the impeller.

  • Electrode Maintenance: Regular cleaning of the electrodes is important as they can become dirty over time, which may affect the pump’s ability to switch on or off correctly.

  • Component Replacement: Each time the pump is disassembled, it is recommended to replace the packing, o-ring, v-ring, and oil seal to ensure optimal performance.

By adhering to these operational guidelines, you can significantly extend the life of your pump and ensure it operates at peak efficiency.

Regular monitoring, proper handling, and adherence to recommended operational parameters are key to maintaining the health and efficiency of your pumping system.

Component-Specific Maintenance

In this section, we delve into component-specific maintenance, covering essential aspects such as overhaul cycles, targeted replacement of parts, and dedicated care for critical components like the pump impeller and electrodes to ensure optimal pump performance.

Overhaul and Replacement

It’s recommended to conduct a thorough overhaul of the pump every 3 to 5 years. This involves a detailed inspection and servicing of all major components, even if the pump appears to be operating normally.

Component Replacement Recommendations

Specific components should be replaced periodically to maintain optimal performance. This includes:

  • Replacing the mechanical seal every two years or when oil becomes milky.

  • Replacing packing, o-rings, v-rings, and shaft sleeves when disassembled or worn.

  • Keeping a check on the condition of other critical parts and replacing them as needed.

Impeller Maintenance

  • Debris Clearance: Regularly check and clear the impeller of any debris. Accumulated debris can impede the pump’s function and cause damage.

  • Ensuring Correct Operation within Pump Curve: Ensure that the pump operates within its recommended pump curve. Operating outside this range can lead to premature wear and inefficiency of the impeller, impacting the overall performance of the pump.

Electrode Maintenance

  • Regular Cleaning: Electrodes should be cleaned regularly as they can become dirty over time, affecting the pump’s ability to switch on or off correctly.

  • Performance Checks: Regular performance checks of the electrodes are important to ensure they are functioning properly. This includes monitoring their responsiveness and effectiveness in controlling the pump’s operations.

Each component plays a vital role in the overall functionality of the pump. Adhering to these maintenance guidelines for specific parts will significantly enhance the pump’s reliability and extend its service life.

Long-Term Storage and Inactivity

  1. Clean and Inspect: Before storing the pump for an extended period, thoroughly clean and inspect it for any signs of wear or damage. Address any issues to prevent further deterioration during storage.

  2. Drain Fluids: Drain any fluids from the pump to prevent corrosion or damage from stagnant liquids.

  3. Protective Coating: Apply a protective coating or lubricant to exposed metal parts to prevent rust and corrosion.

  4. Proper Packaging: Store the pump in a protective covering, ideally in its original packaging, to shield it from dust and moisture.

Maintenance During Inactivity

Store the pump in a dry, temperature-controlled environment to prevent moisture buildup and temperature-related damage.

Biennial Rotation and Oil Leakage Checks

Every two years, rotate the pump manually to ensure moving parts haven’t seized. Also, check for any signs of oil leakage, which could indicate seal deterioration.

Check Seals and Gaskets

Inspect seals and gaskets for brittleness or cracking. Replace if necessary to maintain the pump’s integrity when it’s put back into use.

Regular Visual Inspections

Even during inactivity, periodically inspect the pump for any signs of rust, corrosion, or damage.

By following these guidelines for long-term storage and inactivity, you can ensure that your pump remains in good condition and is ready for operation when needed.

Proper preparation and ongoing care during periods of inactivity are key to preserving the functionality and extending the life of your pump.

Emergency Preparedness

Having a spare pump on hand is a crucial aspect of emergency preparedness. This ensures that operations can continue seamlessly in the event of a sudden failure or necessary maintenance of the primary pump.

A spare pump not only minimizes downtime but also provides peace of mind, knowing that a backup is readily available to maintain continuity in critical processes.

Emergency Performance Checks

Regular emergency performance checks are vital to ensure that the pump is always ready for immediate use.

These checks should include a thorough inspection of all components, testing for functionality, and ensuring that the pump operates within its recommended parameters.

In the event of noticeable performance drops or other issues, immediate action should be taken to rectify these problems, ensuring the pump is always in a state of readiness for unexpected situations.

Adherence to Manuals and Guidelines

Adhering to the operation manuals provided by pump manufacturers is critical for ensuring the proper maintenance and use of the equipment.

These manuals contain specific instructions tailored to the unique design and operational requirements of each pump model. By following these guidelines, users can avoid common mistakes that may lead to premature wear or failure.

The manuals also offer invaluable information on safety precautions, troubleshooting, and optimal operating conditions, which are essential for maintaining the pump’s efficiency and longevity.

Customized Maintenance Schedules

While operation manuals provide a general framework for maintenance, it’s also important to develop customized maintenance schedules that cater to the specific conditions and usage patterns of each pump.

Factors such as the pump’s environment, frequency of use, and the nature of the fluids being pumped should influence routine maintenance.

Customizing the maintenance schedule ensures that each aspect of the pump receives attention at the appropriate intervals, preventing over-maintenance or neglect.

This tailored approach not only prolongs the life of the pump but also optimizes its performance, ensuring reliability and efficiency in its operation.

Troubleshooting and Performance Issues

Being able to identify drops in pump performance is crucial for timely troubleshooting and maintenance. Signs of performance decline can include reduced flow rates, unusual noises, vibration, or increased energy consumption.

It’s important to regularly compare current performance metrics with baseline data to detect any deviations. Early identification of these issues allows for prompt corrective actions, preventing further deterioration and potential system failures.

Regular performance assessments help in diagnosing and rectifying issues before they escalate into major problems.


In summary, effective pump maintenance hinges on regular inspections, specialized care for different models, and adherence to detailed maintenance schedules. Emphasizing emergency preparedness and prompt troubleshooting ensures reliability and longevity.

By diligently following these guidelines, pump operators can achieve optimal performance and durability, minimizing downtime and maximizing the lifespan of their essential equipment. This approach is vital for maintaining pumps as key assets in diverse industrial and commercial settings.