A clogged suction coarse filter or a high pressure drop across the filter can cause a high suction vacuum in the piston pump. Here is the relationship between these factors: 1. Clogging of the oil suction coarse filter: The oil suction coarse filter is designed to capture the larger contaminants and particles present in the hydraulic oil before it enters the pump. Over time, the filter can become clogged or clogged with debris, reducing its effectiveness at filtering oil. When a filter clogs, it restricts the flow of oil, causing the pressure drop across the filter to increase. 2. High pressure drop: The pressure drop at both ends of the oil-absorbing coarse filter refers to the pressure difference between the upstream and downstream sides of the filter. If the filter becomes clogged or there are other restrictions in the oil flow path, a significant pressure drop can result. High pressure drop means the pump has to work harder to draw oil through the filter, resulting in a higher vacuum on the suction side. 3. High oil suction vacuum: When the oil suction coarse filter is clogged or the pressure drop at both ends of the filter is high, it will increase the resistance of oil flow into the pump. Therefore, the pump generates a higher vacuum on the suction side to compensate for the increased resistance and maintain the desired oil flow. This higher suction vacuum puts extra stress on the pump and can cause problems such as cavitation or reduced pump performance. ER-L-130B-LS-28-34-NN-F-3-S1CP-A1N-AAA-NNN-NNN ERL130BLS2834NNF3S1CPA1NAAANNNNNN ER-L-130B-PC-10-NN-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL130BPC10NNNNN3K5NPA1NNNNNNNNNNNN ER-L-130B-PC-10-NN-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL130BPC10NNNNN3S1CPA1NNNNNNNNNNNN ER-L-130B-PC-10-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BPC10NNNNN3S1NPA1NNNNNNNNNNNN ER-L-130B-PC-13-NN-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERL130BPC13NNNNN3K5NLA1NNNNNNNNNNNN ER-L-130B-PC-14-NN-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL130BPC14NNNNN3K5NPA1NNNNNNNNNNNN ER-L-130B-PC-16-NN-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL130BPC16NNNNNN3K5NPA1NNNNNNNNNNNN ER-L-130B-PC-17-NN-NN-N-3-S1NL-A1N-AAA-NNN-NNN ERL130BPC17NNNNN3S1NLA1NAAANNNNNN ER-L-130B-PC-17-NN-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL130BPC17NNNNN3S1NLA1NNNNNNNNNNNN ER-L-130B-PC-17-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BPC17NNNNN3S1NPA1NNNNNNNNNNNN ER-L-130B-PC-18-NN-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL130BPC18NNNNN3S1BPA1NNNNNNNNNNNN ER-L-130B-PC-20-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BPC20NNNNN3S1NPA1NNNNNNNNNNNN ER-L-130B-PC-20-NN-NN-N-3-S1RP-A1N-AAA-NNN-NNN ERL130BPC20NNNNN3S1RPA1NAAAANNNNNNN ER-L-130B-PC-20-NN-NN-N-3-S2NP-A1N-AAA-NNN-NNN ERL130BPC20NNNNN3S2NPA1NAAANNNNNN ER-L-130B-PC-20-NN-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERL130BPC20NNNNN3S4CPA1NNNNNNNNNNNN ER-L-130B-PC-21-NN-NN-N-3-K5NL-A1N-AAA-NNN-NNN ERL130BPC21NNNNN3K5NLA1NAAAANNNNNNN ER-L-130B-PC-21-NN-NN-N-3-K5WP-A1N-NNN-NNN-NNN ERL130BPC21NNNNNN3K5WPA1NNNNNNNNNNNN ER-L-130B-PC-21-NN-NN-N-3-S1CP-A1N-AAA-NNN-NNN ERL130BPC21NNNNN3S1CPA1NAAAANNNNNNN ER-L-130B-PC-21-NN-NN-N-3-S2CP-A1N-NNN-NNN-NNN ERL130BPC21NNNNN3S2CPA1NNNNNNNNNNNN ER-L-130B-PC-21-NN-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERL130BPC21NNNNN3S2NLA1NNNNNNNNNNNN ER-L-130B-PC-22-NN-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERL130BPC22NNNNN3S1BPA1NAAAANNNNNNN 4. Cavitation: High oil suction vacuum will cause cavitation in the pump. Cavitation occurs when the pressure drops too low, leading to the formation and subsequent collapse of vapor bubbles in the oil. These bursting air bubbles create intense shock waves that can corrode pump components, causing damage and reduced efficiency. Cavitation can also cause noise, vibration and reduce overall pump performance. 5. Reduced pump efficiency: When the suction vacuum is too high due to clogged filters or high pressure drop, the pump has to work harder to suck oil. This increased workload results in reduced pump efficiency and increased energy consumption. The pump may experience reduced flow, reduced overall performance, and possible overheating due to the additional strain. 6. Contaminant circulation: A clogged or high pressure drop in the suction coarse filter may bypass the filter and circulate the contaminant through the pump and hydraulic system. This condition can lead to wear and damage to other system components downstream, loss of system efficiency, and potential damage. 7. Precautions for maintenance: Regular maintenance and inspection of the oil suction coarse filter is very important to prevent the phenomenon of excessive oil suction vacuum. This includes cleaning or replacing filters as recommended by the manufacturer or according to specific operating conditions. Additionally, monitoring filter pressure drop and regularly inspecting filters for any signs of clogging or excessive contamination can help identify and address potential problems before they escalate. 8. Proper Filtration and Maintenance Practices: Implementing proper filtration practices, including the use of proper filter elements and regular filter maintenance, can help prevent high suction vacuums. This includes following recommended filter change intervals, monitoring and recording pressure drop measurements, and promptly addressing any filter clogging or degradation. ER-L-130B-PC-25-NN-NN-N-3-K5CP-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3K5CPA1NAAAANNNNNNN ER-L-130B-PC-25-NN-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERL130BPC25NNNNN3K5NLA1NNNNNNNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3S1BPA1NAAAANNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S1NP-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3S1NPA1NAAAANNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BPC25NNNNN3S1NPA1NNNNNNNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S2AP-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3S2APA1NAAAANNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S2NL-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3S2NLA1NAAAANNNNNNN ER-L-130B-PC-25-NN-NN-N-3-S4AP-A1N-AAA-NNN-NNN ERL130BPC25NNNNN3S4APA1NAAAANNNNNNN ER-L-130B-PC-28-NN-NN-N-3-S1CP-A1N-AAA-NNN-NNN ERL130BPC28NNNNN3S1CPA1NAAAANNNNNNN ER-L-130B-PC-28-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BPC28NNNNN3S1NPA1NNNNNNNNNNNN ER-L-130B-RP-10-20-NN-N-3-K5NL-A1N-AAA-NNN-NNN ERL130BRP1020NNN3K5NLA1NAAANNNNNN ER-L-130B-RP-17-12-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL130BRP1712NNN3S1NLA1NNNNNNNNNNNN ER-L-130B-RP-17-20-NN-N-3-S1NP-A1N-AAA-NNN-NNN ERL130BRP1720NNN3S1NPA1NAAANNNNNN ER-L-130B-RP-17-20-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERL130BRP1720NNN3S4CPA1NNNNNNNNNNNN ER-L-130B-RP-18-20-NN-N-3-S2CP-A1N-NNN-NNN-NNN ERL130BRP1820NNN3S2CPA1NNNNNNNNNNNN ER-L-130B-RP-18-20-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERL130BRP1820NNN3S2NLA1NNNNNNNNNNNN ER-L-130B-RP-19-20-NN-N-3-S2CP-A1N-NNN-NNN-NNN ERL130BRP1920NNN3S2CPA1NNNNNNNNNNNN ER-L-130B-RP-20-20-NN-E-3-S1NP-A1N-AAA-NNN-NNN ERL130BRP2020NNE3S1NPA1NAAANNNNNN ER-L-130B-RP-21-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL130BRP2120NNN3S1BPA1NNNNNNNNNNNN ER-L-130B-RP-21-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL130BRP2120NNN3S1NPA1NNNNNNNNNNNN ER-L-130B-RP-21-20-NN-N-3-S2CP-A1N-NNN-NNN-NNN ERL130BRP2120NNN3S2CPA1NNNNNNNNNNNN 9. Filter maintenance and replacement: Regular maintenance and replacement of filters is essential to prevent excessive suction vacuum. Depending on operating conditions and the type of contamination present in the hydraulic fluid, the suction coarse filter may need to be cleaned or replaced at certain intervals. Following manufacturer's guidelines and industry best practices for maintaining and replacing filters can help maintain proper oil flow and prevent high vacuum-related problems. 10. Proper Fluid Contamination Control: Implementing effective fluid contamination control measures can help minimize the likelihood of filter clogging and subsequent high suction vacuum. This includes using an appropriate filtration system, such as an additional fine filter or depth filter, to supplement the suction coarse filter and remove smaller particles from the hydraulic oil. Regular fluid sampling and analysis can also help identify potential contaminants and guide maintenance practices. 11. System flushing and cleaning: If the suction strainer is severely clogged or the pressure drop is too high, a system flushing or cleaning procedure may be required. This includes removing the filter and thoroughly cleaning the fuel lines, tank and other components to remove accumulated debris. System flushing should follow the manufacturer's guidelines and use a suitable cleaning agent to ensure proper removal of contaminants without causing damage to the system. 12. Proper filter size and design: It is critical to ensure that the suction coarse filter is sized and designed for the specific application. This includes consideration of factors such as expected flow rates, type and size of contaminants, and required filtration efficiencies. Using a filter with the proper surface area and micron rating will help optimize filtration performance and reduce the chance of filter wear. ER-L-130B-RP-21-20-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERL130BRP2120NNN3S4CPA1NNNNNNNNNNNN ER-L-130B-RP-23-20-NN-N-3-S2AP-A1N-NNN-NNN-NNN ERL130BRP2320NNN3S2APA1NNNNNNNNNNNN ER-L-130B-RP-23-20-NN-N-3-S2BP-A1N-NNN-NNN-NNN ERL130BRP2320NNN3S2BPA1NNNNNNNNNN ER-L-130B-RP-23-20-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERL130BRP2320NNN3S2NLA1NNNNNNNNNNNN ER-L-130B-RP-25-20-NN-N-3-S1AP-A1N-AAA-NNN-NNN ERL130BRP2520NNN3S1APA1NAAANNNNNN ER-L-130B-RP-25-20-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERL130BRP2520NNN3S1APA1NNNNNNNNNNNN ER-L-130B-RP-25-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL130BRP2520NNN3S1BPA1NNNNNNNNNNNN ER-L-130B-RP-25-20-NN-N-3-S1NL-A1N-AAA-NNN-NNN ERL130BRP2520NNN3S1NLA1NAAANNNNNN ER-L-130B-RP-28-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL130BRP2820NNN3S1CPA1NNNNNNNNNNNN ER-L-130B-RP-28-20-NN-N-3-S1RP-A1N-AAA-NNN-NNN ERL130BRP2820NNN3S1RPA1NAAANNNNNN ER-L-130B-TG-31-20-NN-N-C-K5NL-A1R-NNN-ANS-NNN ERL130BTG3120NNNCK5NLA1RNNNANNSNNN ER-L-130B-TG-31-20-NN-N-C-S1NL-A1R-NNN-ANS-NNN ERL130BTG3120NNNCS1NLA1RNNNANNSNNN ER-L-130B-TG-31-30-NN-N-C-K5NL-A1R-NNN-ANS-NNN ERL130BTG3130NNNCK5NLA1RNNNANNSNNN ER-L-147C-AF-10-20-NN-N-3-S4NL-A1N-NNN-NNN-NNN ERL147CAF1020NNN3S4NLA1NNNNNNNNNNNN ER-L-147C-AF-14-20-NN-N-3-S4NL-A1N-NNN-NNN-NNN ERL147CAF1420NNN3S4NLA1NNNNNNNNNNNN ER-L-147C-AF-23-17-NN-N-3-S1NL-A1N-AAA-NNN-NNN ERL147CAF2317NNN3S1NLA1NAAANNNNNN ER-L-147C-AF-23-17-NN-N-3-S1RP-A1N-AAA-NNN-NNN ERL147CAF2317NNN3S1RPA1NAAANNNNNN ER-L-147C-AG-23-17-NN-N-3-S1NL-A1N-AAA-NNN-NNN ERL147CAG2317NNN3S1NLA1NAAANNNNNN ER-L-147C-AK-26-20-NN-F-3-S1CP-A1N-NNN-NNN-NNN ERL147CAK2620NNF3S1CPA1NNNNNNNNNN ER-L-147C-AW-16-25-NN-F-3-S1BP-A1N-NNN-NNN-NNN ERL147CAW1625NNF3S1BPA1NNNNNNNNNNNN ER-L-147C-AW-26-20-NN-E-3-S1BP-A1N-NNN-NNN-NNN ERL147CAW2620NNE3S1BPA1NNNNNNNNNNNN 13. Monitoring and alarm system: Implement a monitoring system to continuously monitor the pressure drop of the oil suction coarse filter, which can provide early warning signals of filter clogging or high pressure drop. With an integrated alarm system, maintenance personnel can be alerted to potential problems in real time, allowing proactive maintenance measures to prevent high suction vacuums. By considering these additional points and implementing proper maintenance and filtration practices, the risk of high suction vacuum due to clogged suction coarse filter or high pressure drop can be minimized. Regular inspection, maintenance and adherence to manufacturer's guidelines are essential to ensure optimum performance and life of your piston pump and overall hydraulic system.