After unloading of small concrete mixer truck, the unloading door is closed, but there is no door closing signal, causing the program to stop running. What is the matter? How to solve it?
The proximity switch of the discharge door of the small concrete mixer truck can sense the signal only when the proximity distance between the rotary handle pointer on the discharge door is no more than 5mm. When the discharge door fails to meet the requirements due to the pressure of the oil pump or the discharge door is stuck by the residues in the small concrete mixer truck when it is closed, the proximity switch cannot reach the rotary handle pointer and has no signal. When the proximity switch or the rotary handle pointer is loose, the proximity switch cannot sense the signal when the proximity distance exceeds 5 mm. If the proximity switch is damaged, there is no signal output.
1. Check whether the working pressure of the hydraulic system of the discharge door meets the requirements (13Mpa)
2. Switch to manual mode, open the discharge door of small concrete mixer truck, and close it after the stuck residue falls
3. Check whether the proximity switch and the rotary handle pointer are loose
4. Check whether the proximity switch is damaged
It is a kind of maintenance required for small concrete mixer if it is left idle for a long time or sealed for storage. The maintenance mainly includes cleaning, cleaning, lubrication, protection, etc. Its purpose is to prevent or reduce the adverse effects of various harsh conditions on the machine during storage, and ensure that the vehicle is always in good standby state.
The reason why there is no signal when the discharge door of the small concrete mixer is closed and the handling content have been explained. If you encounter similar problems and cannot solve them, please contact us ！