If your displacement pump has not been used for a long time and is starting very slowly, there are a few steps you can take to resolve the issue and try to improve its performance: 1. Check for blockages: Check the suction and discharge lines of the pump for any blockages or obstructions. Debris or deposits that accumulate in the tubing can impede fluid flow and reduce pump performance. Remove any blockages found. 2. Lubrication: Check the lubrication level of the pump. Lubrication is critical to smooth operation, and a pump lacking proper lubrication can result in increased friction and sluggish performance. Consult pump manual to determine proper lubrication requirements and apply lubricant as needed. 3. Priming the pump: If the pump loses priming (meaning it is not full of fluid), it will have difficulty starting to pump effectively. Follow the manufacturer's instructions to properly prime the pump. The process usually involves filling the pump with the pumped liquid to create a vacuum and enable efficient pumping. 4. Check valves: Piston pumps usually have valves that control the direction of liquid flow. Make sure these valves are working properly and are not stuck or damaged. Valve failure can disrupt the pumping process and cause sluggish operation. 5. Inspect the plunger: Inspect the plunger for any signs of wear, damage, or corrosion. A worn plunger may not be able to form a proper seal, resulting in reduced efficiency. If you notice any problems with the plunger, it may need to be replaced. FR-R-074B-PC-20-NN-NN-N-3-K4B2-A1N-AAA-NNN-NNN FRR074BPC20NNNNN3K4B2A1NAAAANNNNNN FR-R-074B-PC-20-NN-NN-N-3-S1B2-A1N-AAA-NNN-NNN FRR074BPC20NNNNN3S1B2A1NAAAANNNNNNN FR-R-074B-PC-20-NN-NN-N-3-S1N2-A1N-AAA-NNN-NNN FRR074BPC20NNNNN3S1N2A1NAAAANNNNNNN FR-R-074B-PC-20-NN-NN-N-3-S1N4-A1N-AAA-NNN-NNN FRR074BPC20NNNNN3S1N4A1NAAANNNNNN FR-R-074B-PC-20-NN-NN-N-3-S1N4-A1N-NNN-NNN-NNN FRR074BPC20NNNNN3S1N4A1NNNNNNNNNN FR-R-074B-PC-20-NN-NN-N-3-S1R2-A1N-NNN-NNN-NNN FRR074BPC20NNNNN3S1R2A1NNNNNNNNNN FR-R-074B-PC-21-NN-NN-N-3-S1B2-A1N-NNN-NNN-NNN FRR074BPC21NNNNN3S1B2A1NNNNNNNNNN FR-R-074B-PC-21-NN-NN-N-3-S1C2-A1N-NNN-NNN-NNN FRR074BPC21NNNNNN3S1C2A1NNNNNNNNNN FR-R-074B-PC-23-NN-NN-N-3-S1A2-A3N-NNN-NNN-NNN FRR074BPC23NNNNN3S1A2A3NNNNNNNNNN FR-R-074B-PC-23-NN-NN-N-3-S1B2-A1N-NNN-NNN-NNN FRR074BPC23NNNNN3S1B2A1NNNNNNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4A2-A1N-AAA-NNN-NNN FRR074BPC25NNNNNN3K4A2A1NAAAANNNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4B2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3K4B2A1NAAAANNNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4C2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3K4C2A1NAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4N2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3K4N2A1NAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4N4-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3K4N4A1NAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4R2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3K4R2A1NAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-K4R2-A1N-NNN-NNN-NNN FRR074BPC25NNNNN3K4R2A1NNNNNNNNNN FR-R-074B-PC-25-NN-NN-N-3-S1A2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3S1A2A1NAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-S1N2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3S1N2A1NAAAANNNNNN FR-R-074B-PC-25-NN-NN-N-3-S1N2-A1N-NNN-NNN-NNN FRR074BPC25NNNNN3S1N2A1NNNNNNNNNN 6. Belt Tension (if applicable): For belt driven piston pumps, check belt tension. If the belt is loose or worn, it may not be able to transmit enough power to the pump, resulting in poor performance. Adjust or replace belts as needed. 7. Verify motor or engine performance: If the pump is motor driven or engine driven, check the performance of the motor or engine. Low power output will cause the pump to run slowly. If you suspect a motor or engine problem, consult a professional. 8. Run the pump: Sometimes, a pump that has not been used for a long time may take some time to regain its peak performance. Run the pump for a while and see if its performance improves with use. 9. Check the seals and gaskets: Check the pump seals and gaskets for signs of wear or damage. Leaky seals can reduce pump efficiency and cause slow priming. Replace any defective seals or gaskets to ensure proper and efficient seal operation. 10. Temperature and viscosity: Consider the temperature and viscosity of the pumped liquid. Low temperatures or high viscosities can make pump starting and smooth operation more challenging. If possible, heat the liquid or choose a pump that is more suitable for the specific conditions. 11. Pressure relief valve: Make sure the pressure relief valve is working properly. A faulty pressure relief valve can cause excessive resistance and slow the pump. Check the valve and repair or replace if necessary. 12. Suction line size: If the suction line to the pump is too small or restricted, it will restrict the flow of liquid to the pump. Check that the suction pipe is sized for the capacity of the pump and consider upgrading if needed. FR-R-074B-PC-25-NN-NN-N-3-S1N4-A1N-NNN-NNN-NNN FRR074BPC25NNNNN3S1N4A1NNNNNNNNNN FR-R-074B-PC-25-NN-NN-N-3-S1R2-A1N-AAA-NNN-NNN FRR074BPC25NNNNN3S1R2A1NAAAANNNNNNN FR-R-074B-PC-26-NN-NN-N-3-S1B2-A1N-AAA-NNN-NNN FRR074BPC26NNNNN3S1B2A1NAAANNNNNN FR-R-074B-PC-27-NN-NN-N-3-K4R2-A1N-NNN-NNN-NNN FRR074BPC27NNNNNN3K4R2A1NNNNNNNNNN FR-R-074B-PC-28-NN-NN-N-3-K4N2-A1N-AAA-NNN-NNN FRR074BPC28NNNNN3K4N2A1NAAAANNNNNNN FR-R-074B-PC-28-NN-NN-N-3-S1N4-A1N-AAA-NNN-NNN FRR074BPC28NNNNN3S1N4A1NAAANNNNNN FR-R-074B-RP-14-20-NN-N-3-K4B2-A1N-NNN-NNN-NNN FRR074BRP1420NNN3K4B2A1NNNNNNNNNN FR-R-074B-RP-14-20-NN-N-3-K4V2-A1N-NNN-NNN-NNN FRR074BRP1420NNN3K4V2A1NNNNNNNNNN FR-R-074B-RP-15-18-NN-N-3-S1B2-A1N-AAA-NNN-NNN FRR074BRP1518NNN3S1B2A1NAAANNNNNN FR-R-074B-RP-15-18-NN-N-3-S1B2-A1N-NNN-NNN-NNN FRR074BRP1518NNN3S1B2A1NNNNNNNNNN FR-R-074B-RP-17-20-NN-N-3-S1A2-A1N-AAA-NNN-NNN FRR074BRP1720NNN3S1A2A1NAAANNNNNN FR-R-074B-RP-17-20-NN-N-3-S1C2-A1N-AAA-NNN-NNN FRR074BRP1720NNN3S1C2A1NAAANNNNNN FR-R-074B-RP-17-20-NN-N-3-S1N2-A1N-NNN-NNN-NNN FRR074BRP1720NNN3S1N2A1NNNNNNNNNN FR-R-074B-RP-20-20-NN-N-3-K4N2-A1N-AAA-NNN-NNN FRR074BRP2020NNN3K4N2A1NAAANNNNNN FR-R-074B-RP-20-20-NN-N-3-K4R2-A1N-AAA-NNN-NNN FRR074BRP2020NNN3K4R2A1NAAANNNNNN FR-R-074B-RP-21-20-NN-N-3-S1B2-A1N-NNN-NNN-NNN FRR074BRP2120NNN3S1B2A1NNNNNNNNNN FR-R-074B-RP-21-20-NN-N-3-S1N2-A1N-AAA-NNN-NNN FRR074BRP2120NNN3S1N2A1NAAANNNNNN FR-R-074B-RP-21-20-NN-N-3-S1N2-A1N-NNN-NNN-NNN FRR074BRP2120NNN3S1N2A1NNNNNNNNNN FR-R-074B-RP-21-20-NN-N-3-S2C2-A1N-NNN-NNN-NNN FRR074BRP2120NNN3S2C2A1NNNNNNNNNN FR-R-074B-RP-25-15-NN-N-3-K4N4-A1N-AAA-NNN-NNN FRR074BRP2515NNN3K4N4A1NAAANNNNNN 13. Cavitation: Cavitation occurs when the pressure in the pump drops too low, causing air bubbles to form in the liquid. This may cause poor pump performance. Verify that the pump is not cavitating and adjust operating conditions accordingly. 14. Pump Condition: If the pump is very old or poorly maintained, it may be subject to internal wear and damage. In this case, you may need to service or replace the pump. 15. Professional inspection: If you have tried all troubleshooting steps and the pump still exhibits slow performance, you need to seek professional help. An experienced pump technician or service provider will be able to fully evaluate the pump, identify any potential problems, and make any necessary repairs or maintenance. 16. Regular maintenance plan: Make a daily maintenance plan for the pump. The plan should include tasks such as checking for leaks, inspecting seals and gaskets, monitoring lubrication levels, and verifying the condition of critical components. Regular maintenance can help prevent problems before they happen and keep your pumps running efficiently. 17. Proper storage: If you do not anticipate using the pump for an extended period of time, take proper storage precautions. Store the pump in a clean, dry and protected environment to prevent damage from dust, debris and moisture. 18. Keep it clean: Make sure the pump is kept clean and free of dirt, grime and other contaminants. Clean the exterior regularly and, if possible, use air or water to remove any buildup around critical components. 19. Use Compatible Fluid: Be sure to use the correct type of fluid specified by the pump manufacturer. Using incompatible or unsuitable fluids may cause performance problems and damage the pump. FR-R-074B-RP-25-25-NN-N-3-S1N2-A1N-AAA-NNN-NNN FRR074BRP2525NNN3S1N2A1NAAANNNNNN FR-R-074B-RP-26-20-NN-N-3-K4N2-A1N-AAA-NNN-NNN FRR074BRP2620NNN3K4N2A1NAAANNNNNN FR-R-074B-RP-26-20-NN-N-3-S1A2-A1N-NNN-NNN-NNN FRR074BRP2620NNN3S1A2A1NNNNNNNNNN FR-R-074B-RP-26-20-NN-N-3-S1A2-A3N-NNN-NNN-NNN FRR074BRP2620NNN3S1A2A3NNNNNNNNNN FR-R-074B-RP-28-30-NN-N-3-S2N2-A1N-AAA-NNN-NNN FRR074BRP2830NNN3S2N2A1NAAANNNNNN FR-R-074B-SD-22-NN-NN-R-E-S1N2-A1N-NNN-NNN-NNN FRR074BSD22NNNNRES1N2A1NNNNNNNNNN FR-R-074B-TB-18-20-NN-N-C-S1R2-A1R-AAA-ANS-NNN FRR074BTB1820NNNCS1R2A1RAAAANSNNN FR-R-074B-TC-31-24-NN-E-C-S1B2-A1R-NNN-ANS-NNN FRR074BTC3124NNECS1B2A1RNNNANNSNNN FR-R-074B-TD-31-24-NN-N-C-S1B2-A1R-NNN-ANS-NNN FRR074BTD3124NNNCS1B2A1RNNNANNSNNN FR-R-074B-TD-31-24-NN-N-C-S1C2-A1R-NNN-ANS-NNN FRR074BTD3124NNNCS1C2A1RNNNANNSNNN FR-R-074B-TD-31-24-NN-N-C-S2C2-A1R-NNN-ANS-NNN FRR074BTD3124NNNCS2C2A1RNNNANNSNNN FR-R-090C-AH-18-10-NN-E-3-S1A2-A1N-AAA-NNN-NNN FRR090CAH1810NNE3S1A2A1NAAANNNNNN FR-R-090C-AL-23-20-NN-F-3-S1B2-A1N-AAA-NNN-NNN FRR090CAL2320NNF3S1B2A1NAAANNNNNN FR-R-090C-AN-25-20-NN-N-3-S1N4-A1N-NNN-NNN-NNN FRR090CAN2520NNN3S1N4A1NNNNNNNNNN FR-R-090C-AR-15-20-NN-N-3-S1N2-A1N-NNN-NNN-NNN FRR090CAR1520NNN3S1N2A1NNNNNNNNNN FR-R-090C-AR-18-15-NN-N-3-S1N4-A1N-NNN-NNN-NNN FRR090CAR1815NNN3S1N4A1NNNNNNNNNN FR-R-090C-AR-24-15-NN-N-3-S1N2-A1N-AAA-NNN-NNN FRR090CAR2415NNN3S1N2A1NAAANNNNNN FR-R-090C-CN-12-20-NN-N-3-S1B2-A1N-AAA-NNN-NNN FRR090CCN1220NNN3S1B2A1NAAANNNNNN FR-R-090C-CN-14-20-NN-E-3-K4N2-A1N-AAA-NNN-NNN FRR090CCN1420NNE3K4N2A1NAAANNNNNN FR-R-090C-CN-20-20-NN-N-3-K4N2-A1N-AAA-NNN-NNN FRR090CCN2020NNN3K4N2A1NAAANNNNNN 20. Pump protection: Consider protective devices such as pressure gauges, temperature sensors, and vibration monitors. These devices can help you identify abnormal operating conditions early and take corrective action before major problems arise. 21. Training and Documentation: Ensure that operators and maintenance personnel are adequately trained to operate and maintain piston pumps. Keep detailed records of maintenance activities, repairs and any problems encountered, as this information can be very valuable for future troubleshooting. 22. Replacement of worn parts: If any worn or damaged parts are found during inspection, replace them immediately with original and compatible replacement parts. Use of substandard or incorrect parts may affect pump performance and service life. 23. Avoid overloading: Pay attention to the capacity of the pump and avoid overloading beyond its design capacity. Running a pump beyond its capacity can cause premature wear and failure. 24. Monitor performance: Monitor pump performance regularly to detect gradual decline in efficiency. This may include reduced flow rates, increased power consumption, or unusual noises. Early detection of performance issues can help prevent catastrophic failures. 25. CONSULT MANUFACTURER GUIDES: Always follow the manufacturer's guidelines, recommendations, and specifications for the specific model of displacement pump you are using. They provide valuable information on operating parameters, maintenance intervals and troubleshooting procedures. By implementing these practices, you can improve the performance and reliability of your displacement pump, whether it is idle for extended periods of time or is part of your daily operation. Remember, addressing issues promptly and investing in regular maintenance can prevent costly breakdowns and downtime, saving you time and money in the long run.