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Under normal conditions, reliable data on whether the pump needs repair can be obtained every few months if the tests, records, and periodic summary records are kept accurate.
In addition to monitoring the pump at a specified time, the following maintenance is frequent:
a. Check the pump base, pump, motor is tight, if loose will cause the pump vibration.
b. Check the condition of instrument and lead, check whether the pipeline is leaking or loose, or other damage, and repair it immediately if it needs to be repaired.
c. Packing gland can not be pressed too tight, otherwise it will affect the life of packing.
d. Bearing lubricant change every 1000 hours of work.
Zhonglian Pump Co., Ltd. for our customers finishing on the wear-resistant multi-stage centrifugal pump common fault performance, causes and solutions. Hope that our customers friends in the use of wear-resistant multi-stage centrifugal pump encountered such failures can be promptly resolved.
Wear seven multi-stage centrifugal pump common symptoms, causes of failure and troubleshooting.
Multi-stage wear-resistant centrifugal pump failure phenomenon: non-water pump categories:
The performance of wear-resistant multistage centrifugal pump does not absorb water, pressure gauge and the vacuum gauge pointer violently beating. Or wear-resistant multistage centrifugal pump does not absorb water, vacuum gauge that a high degree of vacuum. There is to see the pressure gauge pump outlet there is pressure, but the pump does not water.
The reason may be injected into the water pump is not enough, water pipes and instrumentation, etc. leaks. At the end of the valve is not open or has been blocked, suction pipe resistance is too large, absorbent height is too large. Outlet resistance is too large, the direction of rotation is not correct, impeller siltation, or damage to the pump, the number of revolutions is not enough.
The solution is followed by water should be poured into the pump, tighten the plug leak. Correct or replace the bottom valve, wash or replace the suction pipe to reduce the water absorption height. Check or shorten the water pipe, check the motor, remove the water pipe joints, cleaning or replacement of impeller, increase the number of revolutions.
Wear multi-stage centrifugal pump failure phenomenon: the pump consumes too much power.
Wear multi-stage centrifugal pump fault causes: packing gland is too tight, packing room fever, impeller wear, pump water supply increased.
Solution: Loosen the packing gland or replace the filler to replace the impeller, increase the resistance of the outlet pipe to reduce the flow.
Multi-stage wear-resistant centrifugal pump failure phenomenon: abnormal internal sound pump, the pump is not on the water.
Wear multi-stage centrifugal pump Fault causes: flow is too large, the suction pipe resistance is too large, the suction height is too large, there is air infiltration at the suction, the suction liquid temperature is too high.
Solution: increase the resistance of the outlet pipe to reduce the flow, check the suction pipe and the bottom valve, reduce the suction height, tighten the blockage leak.
Wear multi-stage centrifugal pump failure phenomenon: pump vibration.
Wear multi-stage centrifugal pump fault reason: the pump shaft and the motor axis are not in the same center line, dirt or water immersed in the bearings.
Solution: The pump and motor shaft centerline alignment, cleaning bearing replacement grease.
Multi-stage wear-resistant centrifugal pump failure phenomenon: insufficient flow wear-resistant multi-stage centrifugal pump fault causes: pump blockage, seal ring friction too much, the number of revolutions is insufficient.
Solution: clean the pump and pipe, replace the seal ring, increase the number of revolutions.
Wear multi-stage centrifugal pump fault phenomenon: bearing overheating.
Wear multi-stage centrifugal pump Fault reason: grease dry or dirty, the pump shaft and the motor shaft is not in a center line.
Solution Check or clean the bearing body, change the grease and align the shaft center.
Wear multi-stage centrifugal pump failure phenomenon: balance water interruption. Balance room fever, motor power increases.
Wear multi-stage centrifugal pump Fault reason: pump in high flow low lift operation. Balance plate and balance plate produce grinding.
Solution Small gate valve to the design state of operation, remove the balance plate for inspection.
Wear multi-level centrifugal pump common fault handling
Wear-resistant multi-stage centrifugal pump regularly check the performance of the pump (such as flow, head, vibration, etc.) and to be recorded, according to these records to analyze whether the pump is working properly, whether it needs maintenance, or to determine which part to repair.