What are the troubleshooting methods for vacuum preloading submersible pumps?

What are the troubleshooting methods for vacuum preloading submersible pumps?

Vacuum preloading submersible pump is a device used for drainage, commonly used for pumping concrete, sewage, and other liquids. During use, various malfunctions may occur and require troubleshooting. Here are some common troubleshooting methods for vacuum preloading submersible pumps.

If the air pump cannot be started, check if the power supply and cables are connected properly. After confirming that the power supply is normal, the motor coil can be checked for short circuits or open circuits, and a multimeter needs to be used for measurement. In addition, it is necessary to check if the fuse is blown. If so, a new fuse needs to be replaced.

If the noise of the air pump is too loud during operation, it may be caused by overload or damage. Check the load condition of the air pump to ensure that it does not exceed the rated load. If the load is normal, it is necessary to check whether the bearings and mechanical seals of the air pump are damaged, and dismantle and replace them.

Excessive vibration of the air pump may be caused by imbalance or looseness. To check if the foundation of the air pump is firm, if there is any looseness, it needs to be tightened. If there are no issues with the foundation, it may be that the impeller of the air pump is unbalanced and needs to be disassembled and balanced.

Air pump leakage may be caused by damaged or loose seals. Check if the seal of the air pump is intact. If it is not, replace it with a new seal. In addition, it is necessary to check whether the pressure in the sealing chamber is normal. If the pressure is too high, it may be caused by a blockage in the exhaust pipe and needs to be cleaned.

The decrease in air pump displacement may be caused by blockage of the intake valve. The air pump needs to be disassembled and the intake valve cleaned to ensure unobstructed flow. In addition, it is necessary to check if there is any air leakage in the intake pipeline. If there is any air leakage, it needs to be repaired.

The high operating temperature of the air pump during operation may be caused by overload or bearing damage. Check the load condition of the air pump to ensure that it does not exceed the rated load. If the load is normal, it is necessary to check whether the bearings of the air pump are well lubricated and add an appropriate amount of lubricating oil.

The lack of pressure in the air pump may be caused by damage to the exhaust valve or abnormal intake valve of the air pump. It is necessary to check whether the exhaust valve is intact. If it is not intact, a new exhaust valve needs to be replaced. In addition, it is necessary to check the opening and closing of the intake valve to ensure normal operation. If the intake valve does not function properly, it may need to be repaired or replaced.