Sterling STT40, STT70 manual First Aid, Corrective Maintenance, Symptoms of Worn Desiccant

STT40 / STT70

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.

5.3.1. 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 material moisture content, plasticizer vapors in the return air, and number of regeneration cycles.

Your dryer may need new desiccant if it exhibits any of the following symptoms:

•The process air dew point measured with a portable dew point monitor is higher than -10°F (-23ºC) throughout the process drying cycle.

•Noticeable amounts of desiccant in the beds is a medium-brown color or darker.

If you notice any of these signs, replace the desiccant in the desiccant beds. Desiccant replacement kits are available from the Parts Department. If you want, a technician can repack desiccant beds at your site.

•Handling desiccant material is HAZARDOUS.

Wear an N-100 type safety filter mask or equivalent to avoid prolonged breathing of desiccant dust. Wear safety goggles and gloves to avoid contact with eyes and skin.

•Handle with adequate ventilation.

•Wash hands thoroughly after handling.

✚ FIRST AID ✚

In case of eye contact, immediately flush eyes with plenty of water for at least 15 minutes.

SEE A PHYSICIAN IMMEDIATELY IF IRRITATION PERSISTS.

Maintenance 5-7