How to troubleshoot insufficient discharge of J-series metering pumps?

When the J-series metering pump shows insufficient discharge, it directly affects dosing accuracy.

The first common cause is partial blockage in suction pipeline. Deposits or crystallized medium can reduce flow area, requiring thorough pipeline cleaning with specialized tools.

Foreign objects stuck in check valves is another major factor. The solution involves disassembling valve cover, cleaning ball and seat components with solvent, and replacing damaged parts if necessary.

Worn valve components cause internal leakage. Measurement with thickness gauge and roundness tester is required, with replacement threshold at 2mm remaining thickness for seats or 0.05mm roundness error for balls.

Insufficient motor speed due to power supply issues or motor faults also leads to discharge reduction. RPM measurement, voltage check, and motor bearing inspection are essential troubleshooting steps.