Maguire Weigh Scale Blender WSB-444

Test slide valve movement during LOTO without air pressure

Check for wear on the slide valve guide rods

Check cylinder clevis adjustment for correct closing of the valve

Check the clevis pin connecting the air cylinder for wear

Inspect mix blades for damage or wear

Replace damaged, worn, or sharp mix blades

Verify the load cell cable is plugged into the side of the controller.

Ensure the weigh bin is resting on the load cells freely and does not make contact with anything around it.

Check that the air line to the weigh bin’s dump valve is connected as it would be during normal operation.

Ensure the load cells and bin are not jammed. Test by lightly touching the bin and observing the display change.

Perform zero weight calibration routine.

Check the physical condition of the load cell components

Inspect for any visible damage or corrosion

Record the current zero reading

Is the zero reading within acceptable range?

Is the full weight reading within acceptable range?

Pneumatic and Electrical Lockout/Tagout (LOTO)

Ensure blender is pneumatically and electrically locked out

Disconnect compressed air supply

Is the pneumatic valve actuator manually operated?

Use lockout/tagout valve for pneumatic lockout/tagout if applicable

Disconnect blender from air supply if directly connected

Dissipate stored/residual energy from pneumatic system using Manual Operations screen

Is the blender equipped with an electrical LOTO box?

Locate the adjustment screw at the rear of the sensor

Use a very small regular screwdriver for adjustment

Turn the adjustment screw clockwise until the LED turns ON

Turn the adjustment screw counter-clockwise until the LED turns OFF

Continue turning counter-clockwise for one full revolution after the LED turns off

Does the LED turn on when material is present in front of the sensor?

Note any additional adjustments made due to material dust or static

Sensor Position Adjustment (200 and 400 Series Models Only)