HAOMEI Concrete pump machinery can be common to many, usually the main problem is in the concrete pump rotational speed of the main motor can not reach or can not start,(used concrete pump and mixer) the problem is particularly troubled for many construction business, The following article will teach us how to Solve Concrete Pump Main motor failure:

We must first understand that the main concrete pump motor does not start up or launched, first check whether the closed QF1, QF1 if unable to close, you should check circuit troubleshooting. If you press the start button the main motor, motor shell operation, but less than the required speed, then you should first check whether the normal power supply voltage, the transformer capacity is sufficient, and then determine whether the diameter of the supply line to meet the requirements, ensure that the voltage drop within a predetermined range within you can relieve the problem. In addition, if the improper operation of the hydraulic system will cause difficulty in starting, so that the pump should first check the power, and then check the stirring motor operating handle is in the neutral position, (concrete pump mixer truck)the pumping button is closed. If you still can not start the pump pressure is necessary to check the master control solenoid valve is normal, should ensure that when starting the main pump in unloading state.

Finally, remind the construction business, there is an important question is, (concrete pump with mixer)concrete pump master cylinder top, if not the master cylinder should check the commutation limit switch and its associated line; if normal, you should check the master cylinder operation control solenoid valves and hydraulic valve if stuck. Also check the hydraulic oil pressure hydraulic valve control is adequate, if not enough can not promote the spool movement, the cylinder will not change direction.