Sterling 60 cfm Corrective Maintenance, Cleaning with Compressed Air, Symptoms of Worn Desiccant

Cleaning with Compressed Air

Blow clean, dry compressed air up and down the pleats, blowing out the filter from the inside out. Remove loose dirt from the filter with compressed air or vacuum from the outside.

Caution! DO NOT clean/wash filter with water!

After each cleaning:

•Inspect the filter element. Briefly hold a light bulb behind the element and look for any fatigued paper or residual dirt. Inspect for holes and tears by looking though the filter toward a bright light. Check for damaged gaskets or dented metal parts. Do not re-use a damaged filter!

•Check the gasket for damage. A damaged gasket allows contaminants into the process. Replace as needed.

Servicing the Dew Point Monitor

The accuracy of the dew point monitor on mini dryer systems depends on proper operation of the dew point sensor and the control board. The dew point sensor is in the process air stream and is therefore susceptible to contamination.

Dew point sensor life depends on:

•Air temperature and flow passing over the sensor.

•The amount of fines (dust) in the process air.

•The amount of plasticizer vapor in the process air.

Once every six months, the dryer operator should monitor the initial dew point sensor readings and establish a periodic replacement schedule as needed.

Caution! Do not attempt to check the continuity or resistance of the dew point sensor.

5-3 Corrective Maintenance

This section provides you with the information necessary to correct or repair any issues which might appear during the normal operation of your dehumidifying dryer. Although we have listed how to perform these procedures, it is recommended that you call the Service Department to have any in-depth maintenance performed.

Symptoms of Worn Desiccant

The moisture absorption capacity of the desiccant used in your dehumidifying dryer degrades after an indefinite period of time. Useful life depends on variables such as the condition of the process filter, how much dust and fines have been passed through the filter and got into the desiccant chamber, and plasticizer vapors in the return air.

15, 30, & 60 cfm Compact Dryers 31