Preventive Maintenance Guide for Weighing Mixers: Accuracy and Cost Both Guaranteed!

The material distribution doors and valves must open and close freely, quickly, and completely.

Check the sliding door track for wear. Check whether the cylinder positioning adjustment properly closes the sliding door.

The sliding door should be inspected for wear, closure, and responsiveness.

Check whether the U-shaped pin connecting the cylinder is intact, with no fractures or wear.

Check whether the air pressure is correct, the fittings are secure, and the air hose is damaged or kinked.

Blow off all contaminants with compressed air.

Depending on the dustiness of the materials you typically handle, contamination of the load cell may be an ongoing issue for the mixer, and a more refined load cell enclosure from the manufacturer may be required.

Although the free movement of the weight sensor is slight, it is crucial and material buildup cannot be tolerated.

The weighing box must be freely floating to allow the load cell to perform its function.

Check whether the discharge valve, baffle, or gate operates smoothly.

The pivot points of these institutions should not wear out.

The valve device should not drip when closed, and it should not drip even when closed to prevent particle leakage.

The valve mechanism should accommodate the static accumulation of particles without interfering with the cessation of material flow.

Check whether the valve is fully closed.

Carefully inspect all parts of the weighing box and its supporting frame to ensure that nothing is in contact with any fixed parts of the mixer, and that its weight is fully supported by the load cells, just as designed.

All sides of the weighing box should be left with gaps to prevent inaccurate weight measurements.

Touching the box causes the weight reading on the controller to change. Once the touch is removed, the reading returns to its original value, with an error margin of 1 gram or 0.1 gram.

Usually, according to the display accuracy specified by the manufacturer, only the last digit will drift or change, and the variation will not exceed one digit.

If any interference is detected in the weighing box, it must be repaired.

Check if the blades are bent or noticeably sharp, as these conditions are caused by material wear during the mixing process. Bent blades may break and severely damage your process screw.

Sharp blades pose safety hazards and can also lead to a gradual decline in mixing performance.

Worn and sharp mixing blades are not only dangerous, but may eventually break and fall into the machine. Moreover, they are also unable to mix materials effectively.