1. Water conditions

Water level depth

• The depth of the water level in the well directly affects the suction range and efficiency of the pump. If the water level is too low, the pump may not be able to suction properly or lead to cavitation phenomenon (vaporization of the liquid produces bubbles that impact the surface of the impeller).

• Suggestion: Select the appropriate pump type according to the actual water level, or adjust the installation depth of the pump.

Water quality and sand content

• Sediment and suspended solids in the water will accelerate the wear of the impeller and the guide casing, reducing the efficiency and service life of the pump.

• Suggestion: In water with high sand content, increase the screen or use the pump body made of wear-resistant material.

Water Temperature

• High temperature water may lead to accelerated aging of the pump body seals, while affecting the motor heat dissipation.

• Suggestion: For high temperature water source, choose high temperature resistant sealing materials and heat dissipation design.

2. Pump body structure

Impeller design

• The shape, material and size of the impeller directly affect the pump head and flow. For example, closed impeller has high efficiency but is easy to be clogged, and open impeller is suitable for impurity-containing water sources.

• Suggestion: choose the right type of impeller according to the water conditions.

Pump body material

• Materials need to be corrosion-resistant (such as stainless steel, cast iron) and wear-resistant (such as high chromium alloy). If the material is not selected properly, the pump body will be easily corroded or worn.

• Suggestion: choose the right material according to the water acidity and alkalinity and sand content.

Seal performance

• The reliability of the mechanical seal or packing seal directly affects the leakage and life of the pump. Seal failure can lead to lubricant leakage or well water entering the motor.

• Suggestion: Check the seals regularly and replace the aging or worn seals in time.

3. Operating conditions

Power supply voltage and frequency

• Voltage instability or frequency deviation will lead to changes in motor speed, which in turn affects the pump flow and head. For example, too low a voltage may lead to motor overload.

• Recommendation: Ensure that the power supply voltage is stable, and equip with voltage stabilizing equipment if necessary.

Load and flow regulation

• The load of the pump needs to match the actual demand. If the flow rate is too large or too small, it will lead to a decrease in efficiency.

• Suggestion: Make the pump run in the high efficiency zone by valve adjustment or frequency converter control.

Starting method

• Direct start may lead to large current impact, affecting the life of the motor; soft start or frequency conversion start can reduce the impact.

• Suggestion: choose suitable starting method according to motor power.

4. Environmental factors

Installation environment

• Unstable installation of the pump body or loose foundation will lead to vibration and noise, and even damage to the pump body.

• Suggestion: Make sure the installation foundation is solid and the pump body and motor are well centered.

Ambient temperature and humidity

• High temperature and high humidity environment may lead to motor insulation degradation and increase the risk of leakage.

• Suggestion: Enhance the protection level of the motor (e.g. IP68) in harsh environments.

Space constraints

• Insufficient installation space may lead to deformation of the pump body or poor heat dissipation.

• Suggestion: Reserve enough space for installation and maintenance according to the size of the pump.

5. Maintenance Management

Regular maintenance

• Long-term non-maintenance can lead to impeller clogging, bearing wear, seal failure and other problems.

• Suggestion: Establish a regular maintenance program, including cleaning the pump body, replacing lubricating oil, checking seals, etc.

Operation specification

• Frequent start-stop or no-load operation will accelerate pump wear.

• Suggestion: Standardize the operation procedure and avoid running the pump under non-designed working conditions.

Spare parts management

• Lack of key spare parts (e.g. impeller, bearing, seal) will lead to failure that cannot be repaired in time.

• Suggestion: Reserve common spare parts to shorten the repair time.