1. If there is a slight leakage after the pump is started, it should be observed for a period of time. If the leakage does not decrease after 4 hours of continuous operation, the pump should be stopped for inspection.
2. The operating pressure of the pump should be stable, and the pressure fluctuation should not exceed 1 kg/cm².
3. During the operation of the pump, the pumping should be avoided to avoid dry friction on the sealing surface and damage to the seal.
3. The sealing condition should be checked frequently. During operation, when the leakage exceeds the standard, the heavy oil should not exceed 5 drops/min, and the light oil should not exceed 10 drops/min. If there is no improvement trend within 2-3 days, the pump should be stopped to check the sealing device.
