1. The reversing valve of the self feeding mixer truck is prone to wear of the valve core seal ring, damage of the valve seat and valve stem after a long time of use, resulting in gas leakage in the valve, slow action of the valve or abnormal reversing and other failures. Solution: replace the sealing ring, valve rod and valve seat, or replace the reversing valve.
2. If the reversing valve of the self feeding mixer can not reverse or the reversing action is slow, it is generally caused by the spring being stuck or damaged, poor lubrication, oil stain or impurities blocking the sliding part, etc. Solution: We should first check whether the oil atomizer of the self feeding mixer works normally and whether the viscosity of the lubricating oil is appropriate. Solution: Replace the lubricating oil of the self feeding mixer truck, clean the sliding part of the reversing valve, or replace the spring and reversing valve.
3. If the inlet and outlet holes of the solenoid pilot valve are blocked by oil sludge or other debris, the movable iron core is stuck, not tightly closed, and the circuit has a fault, etc., the reversing valve can not reverse normally. For the first three cases, the solution is to clean the oil sludge and impurities on the pilot valve and the movable iron core, and the circuit fault can generally be divided into circuit fault and solenoid coil fault.
Before checking the circuit failure of the self feeding mixer truck, turn the manual knob of the reversing valve a few times to see if the reversing valve can normally reverse at the rated air pressure. If it can, the circuit is faulty; During the inspection, the instrument can be used to measure the voltage of the solenoid coil to see whether the rated voltage is reached. If the voltage is too low, further check the power supply in the control circuit and the associated travel switch circuit. If the reversing valve can not reverse normally under the rated voltage, check whether the connector of the solenoid coil is loose or not in contact. Check method: unplug the plug and measure the resistance of the coil. If the resistance is too large or too small, the solenoid coil is damaged and needs to be replaced.
The above is a detailed introduction to the Zhongke self feeding mixer, and I hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude https://www.cnzkjf.com