What Causes an Air Pump to Fail to Build Pressure?
1 Answers
An air pump's failure to build pressure can be caused by motor phase loss, damaged pump seals, or excessively low pressure limits. The specific reasons are as follows: Motor Phase Loss: Motor phase loss prevents the motor from delivering its rated power, thereby limiting the air pump's maximum output pressure (as pump pressure increases, motor load gradually rises, and power consumption increases accordingly). In this case, the electrical circuit should be inspected. Damaged Air Pump Seals: Particularly, piston head seal damage can cause air leakage between high- and low-pressure chambers. Most common air pumps are piston-type, resembling hydraulic cylinder structures. The piston head is equipped with seals, which over time can fail due to normal wear or aging, allowing air to bypass between high- and low-pressure chambers and preventing pressure buildup. This requires disassembling the air compressor and replacing the seals. This is the most common cause of air pump pressure failure. Excessively Low Pressure Limit Setting: For safety, pressure relief valves are installed at the output to prevent dangerous overpressure situations. If the valve's pressure setting is too low, the pump will automatically shut off each time pressure reaches the limit, manifesting as an inability to build pressure. However, the pump continues to operate normally otherwise.
