What should I do if the motor of the high-pressure cleaning machine don't start?

The failure of the high pressure cleaning machine motor to not start can be resolved by the following systematic inspection process, ranked from high to low by priority:

A basic power supply inspection.

Check whether the power socket is working properly and verify the socket function using another device.

Make sure the power line is free of rupture, aging, or false linkage, and focus on checking the plug and machine interface.

A three-phase motor needs to check whether the voltage is balanced (a lack of phase causes the motor to ring and not start).

Water supply systems and protection mechanisms are tested.

Ensure that the water source is sufficient and the water pressure is adequate (the self-absorbing equipment needs to ensure that the pipes are completely immersed in water).

Expelling piping air: Disconnect the power supply and remove the jet head and remove the air bubbles manually until the water flow is stable.

Make sure that the pressure gun trigger is continuously pressed (the motor is not working when the pressure switch is not activated).

Machinery and component failure inspection.

Check whether the pump head and the motor are stuck: When the pump head is removed, turn on the electricity to test whether the motor is running empty.

Clean filters and nozzles: Long-term use may cause impurities to clog the inlet or nozzle.

Detection of capacitance and protective wire: single-phase motor need to check whether the starting capacitance bulging or leakage, replace the same specification capacitance (voltage 450 V above).

Circuit protection and reset operations.

Reset overheat protection: Stop cooling for 30 minutes and restart.

Check earth leakage protection switch or fuse for tripping / fusing.

Test pressure switch function: Apply a thin pin to the tiny switch to observe the motor response.

Professional repair advice

When completing the above screening and still not being able to start, there may be the following complex failures:

The motor burns: The coil disconnect and grounding condition is detected by a universal gauge, and the motor needs to be replaced if the resistance of the single-phase motor is abnormal or if the three-phase motor has a missing phase.

Soft starter / contactor damage: shows no reaction after being turned on, and needs to be replaced after inspection with a professional instrument.

Crankshaft clutch dies: Long-term failure to replace the oil causes the mechanical structure to become stuck, and the pump body needs to be removed to clean and replace the special lubricating oil.