Thoreson-McCosh Industrial Dryer TD-360

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?

Is the alarm light on and message displayed on the digital readout?

Manual Rotation Check (if no alarm)

Remove the side panel of the dryer

Is the process blower motor rotating clockwise?

Read instructions completely before attempting to remove the beds.

Set Off/Auto/On switch to On, Set key switch to 'Adjust Setpoints'.

Follow the procedure in Section 8.2 'Forcing a Bed Index'. When the beds are clear of the manifolds, remove power from the dryer.

Loosen the band clamps that hold the bed tight up against the turret plates, and remove the bed from the unit. Remove the band clamps.

Apply power and repeat the previous steps until all the beds have been removed.

Ensure the unit is powered off before starting the procedure

Avoid measuring the resistance of the sensor to prevent damage

Locate the sensor manifold assembly

Remove sensor and insert from manifold

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

Ensure the unit is powered off before starting the procedure.

Is the Blower Rotation Alarm included on the dryer?

Did the Blower Rotation Alarm activate?

Is there a message on the digital readout indicating incorrect phasing?

Remove the side panel to access the process blower motor.

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.