Thoreson-McCosh Industrial Dryer TD-40

Check that all components are in place

Enter the amp draw of blower motors

Refer to wiring diagram, insert, and individual motor nameplate for amp draw details

Ensure the unit is powered off before starting the check.

Verify that the Blower Rotation Alarm is installed on the dryer.

Is the Blower Rotation Alarm activated?

If no alarm is present, is the blower motor rotating clockwise?

If rotation is incorrect, power off the unit.

Reverse any two of the three incoming power leads to the terminal block.

Is the process dew point within the acceptable range?

Check the system for air leaks in hoses

Check the system for air leaks in the hopper

Warning: Never attempt to measure the resistance of the sensor. This will damage the sensor.

Locate the sensor manifold assembly

Remove sensor and insert from manifold

Remove the insert from the sensor and place it onto the new sensor

Reverse steps 1-5 to complete the installation

Check that all parts are in place after reassembly

Is there a large percentage of broken pellets or dust?

Is there contamination from foreign matter?

Are most of the pellets discolored?

Regenerate a sample of desiccant in an oven at 600°F / 316°C for about two hours.

Place the desiccant into an air tight jar and allow it to cool down to room temperature for a minimum of 12 hours.

Pour 30ml of water into a small glass and record the temperature using a mercury thermometer.