Failures and solutions for corrosion-resistant and wear-resistant multistage pumps

Category: Water pump knowledge

2025-04-16

Corrosion-resistant and wear-resistant multi-stage pumps are crucial equipment widely used in chemical, pharmaceutical, and metallurgical industries. Their primary function is to transport liquids from low to high positions. However, due to complex working environments, these pumps may experience various malfunctions. Below are some common faults and their solutions.

I. Malfunction: Insufficient Flow Rate

Possible Cause: The impeller channels are clogged with corrosion products or other substances. Solution: Clean and unclog the obstruction. If the damage is severe, replace the impeller. Additionally, check the pump's installation location to ensure it's positioned higher than the minimum liquid level to prevent insufficient flow due to air intake.

II. Malfunction: Large Pressure Fluctuations

Possible Cause: The pump base is not firm, or internal pump components are loose. Solution: Reinforce the base and tighten the internal pump components. Also, check for stable pump speed to avoid pressure fluctuations caused by speed variations.

III. Malfunction: High Noise or Unusual Sounds

Possible Cause: Severe bearing wear or loose parts. Solution: Replace the bearings or tighten loose parts. Additionally, check the pump's drive mechanism (e.g., motor or drive belt) for stability to prevent noise from drive problems.

IV. Malfunction: Leakage

Possible Cause: Worn seals or cracks in the pump casing. Solution: Replace the seals or repair cracks in the pump casing. Also, check the pump's installation position to ensure correct installation and good sealing performance.

V. Malfunction: Overheating

Possible Cause: Excessive frictional losses or pump overload operation. Solution: Check the pump's speed and load to ensure operation within a reasonable range. Also, check the condition of the bearings and seals for wear and replace them as needed. Additionally, ensure that the motor's supply voltage is stable to avoid overload operation due to voltage fluctuations.

VI. Malfunction: Failure to Start or Difficulty Starting

Possible Cause: Power supply problems or internal pump jamming. Solution: Check the power supply and cable connections to ensure normal power supply. Also, check if the rotating parts of the pump are jammed; remove any foreign objects if present. Check if the pump drive is working properly. Using the above methods can effectively solve common problems with corrosion-resistant and wear-resistant multi-stage pumps to ensure normal operation and a long service life.

Previous: Working principle and structure of corrosion-resistant and wear-resistant multi-stage pumps

Next: Installation and dismantling steps of corrosion-resistant and wear-resistant multi-stage pumps

Contact Us

Free Hotline:0086-13307481676

Fixed telephone:0086-13307481676      

Mobile:0086-13307481676(WeChat)

E-mail:sales@sanchangpump.com