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E-mail
15093177890@163.com
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Phone
15093177890
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Address
B06-1 Qidi Zhenghang Intelligent Manufacturing Industrial Park, Intersection of Xinxiang Road and Luoning Road, Shangjie District, Zhengzhou City, Henan Province
Zhengzhou Kewangda Biological Instrument Co., Ltd
Common troubleshooting and preventive measures for coolant circulation pumps
Date: 2025-06-16Read: 14
The coolant circulation pump is an important component of industrial and automotive systems, used to circulate coolant in the cooling system of equipment or engines, taking away excess heat and ensuring that the system temperature remains within an appropriate range. It is commonly used in various fields such as engine cooling systems, air conditioning refrigeration systems, chemical equipment, etc. Its good working condition directly affects the stability and efficiency of the equipment or system.
1、 Working principle
The coolant circulation pump uses mechanical energy to drive the flow of coolant, usually using centrifugal force or other methods to pressurize the coolant. The pump body pushes the liquid through the pipeline and radiator to achieve heat exchange and dissipation. The pump sucks in coolant, brings it into the rotating area of the impeller, and accelerates the liquid out through the high-speed rotation of the impeller, forming a stable liquid flow.
2、 Common problems and their causes
Equipment is prone to various problems when used for a long time or maintained improperly. Here are some common questions and their possible causes:
1. The pump does not start or cannot start
Root cause analysis:
Power failure: unstable power supply voltage, wiring issues, or damaged electrical components.
Control system issue: Switch, relay, and control circuit malfunction causing the pump to fail to start.
Motor damage: The motor is burnt out or malfunctioning.
resolvent:
Check the power supply to ensure that the voltage is normal and the power wiring is reliable.
Check if the control system is working properly and ensure the proper functioning of components such as switches, relays, sensors, etc.
If the motor malfunctions, it needs to be repaired or replaced.
2. The pump cannot achieve the expected flow rate or the flow rate is insufficient
Root cause analysis:
Damage to pump impeller: Wear or damage to the impeller leads to low pump efficiency and insufficient flow.
Pipeline blockage: Foreign objects or sediments in the pipeline block the flow channel.
There is a problem with the suction port of the pump: the suction port is covered or contaminated with air, causing the pump to be unable to suction water properly.
resolvent:
Check whether the impeller is worn or damaged, and replace it in a timely manner.
Clean the pipeline and check for sediment or foreign object blockage.
Check the suction port to ensure it is unobstructed and prevent air from entering.
3. Abnormal pump noise
Root cause analysis:
Bearing damage: Long term use can cause bearing wear or lack of lubrication, resulting in noise.
Foreign objects inside the pump body: There are foreign objects inside the pump body that affect the rotation of the impeller or cause friction.
Unbalanced pump operation: The pump impeller is unbalanced or not securely installed, resulting in unstable operation.
resolvent:
Check the condition of the bearings and promptly add oil or replace damaged bearings.
Clean the debris inside the pump body to ensure smooth rotation of the impeller.
Check the installation position of the pump to ensure it is level and stable, and avoid imbalance.
4. Pump overheating
Root cause analysis:
High coolant temperature: The coolant temperature exceeds the design range of the pump, causing overheating.
Damaged pump body seal: Poor sealing causes coolant leakage, affecting the cooling effect of the pump.
Excessive pump load: The pump operates under high load for a long time, resulting in overheating.
resolvent:
Check the coolant temperature to ensure it is within the appropriate operating range.
Check the seals and replace damaged seals or gaskets in a timely manner.
Reduce pump load or replace with a higher power pump as needed.
5. Coolant leakage
Root cause analysis:
Poor sealing: The aging, damage, or improper installation of the pump's sealing components can cause coolant leakage.
Loose pipeline connections: Loose or damaged pipeline interfaces can cause liquid leakage.
Aging of pump body: Long term use can cause the material of the pump body to age or corrode, resulting in cracks or leaks.
resolvent:
Check the seals to ensure they are intact and undamaged, and replace them with new ones if necessary.
Check the pipeline connections to ensure that the interfaces are tight.
Replace aged or corroded pump bodies or their components to prevent coolant leakage.
3、 Preventive measures for coolant circulation pump
Regular inspection and maintenance are particularly important to avoid the occurrence of the above-mentioned problems. Here are some preventive measures:
1. Regular inspection and maintenance: Regularly check the working status of the pump, including the electrical system, pump body, pipelines, coolant, etc., and promptly identify and eliminate hidden dangers.
2. Cleaning and replacing coolant: The coolant may deteriorate or contain impurities over time. Regularly clean and replace the coolant to ensure the normal operation of the system.
3. Regular lubrication: Regularly lubricate the pump bearings and other components that require lubrication to reduce wear.
4. Install protective devices: Install temperature and pressure sensors and overload protection devices to prevent the pump from stopping due to overload or abnormal temperature.
By regular inspection, scientific maintenance, and timely resolution of problems, the service life of the coolant circulation pump can be extended and the stable operation of the system can be ensured.
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