| Faults | Causes | Solutions |
| Air leakage of solenoid valves | Foreign matters found in valves | Blow air into the valve in a reverse direction for repeatedly test |
| Wear of valve components | Replace worn parts |
| Solenoid valves fail to work | Poor contact of valve wires | Re-plug or repair poor contact parts to enable good contact |
| Damaged control circuit boards | Replace control circuit control boards |
| An inadequate amount of air injection for solenoid valves | Solenoid valves are not switched to the assigned location | Re-adjust or replace solenoid valves |
| Air pressure is too low | Check the pressure gauge and corresponding air piping
|
| Rice leaps on rice channels | The water content in rice is excessively high | Dry the rice for re-sorting |
| Ashes on rice channels cake | Clean the rice channel with a piece of soft cloth |
| Scratches occur on rice channels | Replace rice channels with new ones |
| Frequent action of color sorting indicator lights and
electromagnetic valves (fluorescent lamps) | Fluorescent lights are burn out | Replace fluorescent lamps with new ones |
| Color sorting modes are not set correctly | Set color sorting modes correctly |
| Damaged power supplies for fluorescent lamps | Replace power supplies |
| Background plates get stuck | Restore stuck boards |
| Rice sorting waves are not correctly set | Re-adjust background plates |
| Fluorescent lamps are not lightened | Re-lighten fluorescent lamps |
| Circuit fault reminders appear | Circuit fault | Please contact us |
| Poor rice sorting results on channels at both sides | Fluorescent lamps are black at both ends | Replace fluorescent |
| The equipment don’t work at all | Sensitivity is too low | Adjust sensitivity |
| Background plates are improperly adjusted | Adjust background plates
|
| Sorted grains are increasingly inferior ones during a certain
period | Dust accumulates on glass plates in the sorting chamber | Wipe off dust with a clean piece of cloth |
| Parameters of sensitivity and background plates change | Re-set parameters |
| Rice channels are unheated | Check the heating system |
| Dust wipers are damaged and aged | Replace dust wipers |
| Poor sorting results on a single side of the system | Poor cleaning results due to inappropriate action of rod less
cylinders | Adjust the wiping speed of dust wipers |
| Color Sorters often shut down | Excessively high sensitivity; re-adjust the sensitivity | Background plates (or wave forms) are not adjusted properly |
| Re-adjust Background plates | Excessively high content of yellow grains |
| Reduce output | Inadequate air supply pressure |
| Check the air pressure and air passage to find out they are proper;
re-adjust the air passage | Protection of air pressure often occurs |
| Try to make pipes unblocked | clean or replace relative filter elements |
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