Failure of the vertical multi-stage pump and its soluti […]
Failure of the vertical multi-stage pump and its solutions:
Fault: The pump does not discharge water, and the pressure gauge and vacuum gauge pointer jump violently.
Cause: The water pumped into the pump is not enough and the inlet pipe leaks.
Remedy: Fill the pump with water again to block the leak.
Fault: The pump does not emit water, but the vacuum gauge shows a high vacuum
Cause: The bottom valve is not open or blocked, the suction pipe resistance is too high, and the suction height is too high.
Remedy: Level or replace the bottom valve, clean or replace the suction pipe, reduce the water absorption height.
Fault: The pump does not discharge water and the pressure gauge shows pressure.
Reason: The pump shaft rotation direction is wrong, the outlet pipe resistance is too large, the impeller is choked, and the number of revolutions is not enough.
Remedy: Correct steering, check the length of the pipe, clean the impeller, and increase the number of revolutions.
Fault: Reduced pump flow or head drop.
Cause: The impeller or pipe is clogged, the seal ring or impeller wears badly, and the number of revolutions is lower than the specified value.
Remedy: Clean the impeller or tubing, replace damaged parts, and adjust to the specified number of revolutions.
Fault: The pump consumes too much power.
Cause: The impeller or seal ring is worn and the flow rate is excessive.
Remedy: Remove mechanical friction and close the water outlet valve.
Fault: The sound in the pump is abnormal and it cannot absorb water.
Cause: The water absorption height is too high, the suction pipe leaks, the flow rate is too large, and cavitation occurs.
Remedy: Reduce the water absorption height, block the water leakage, and adjust the water gate valve to use in the specified working conditions.
Fault: The pump vibrates badly.
Cause: Pump cavitation, impeller imbalance, loose anchor bolts.
Remedy: Eliminate cavitation, balance the impeller and tighten the anchor bolts.
Fault: Bearing overheated.
Cause: Insufficient or excessive lubricating oil or deterioration.
Remedy: Check motor bearings, clean bearings and change oil.
绍兴市雪花机电有限公司创建于1998年(原绍兴市雪花电器水泵 厂);现位于新兴的绍兴袍江工业区:是一家集交、直流电机、水泵及精 密机械加工的机电一体化外向型生产企业:产品直接销往东南亚、中东地 区,和欧美国家:公司技术力量雄厚,生产设备先进,检测设施齐全;对 小功率电机和水泵等机电一体化产品具有一定的设计开发和大批量生产的能力。