This manual introduces the operation and maintenance of Geotech GTHDD Series Compressed Air Dryer
The Geotech GTHDD Series Desiccant Air Dryer utilizes the pressure swing adsorption method to dry compressed air. The system consists of two identical towers containing hygroscopic desiccant beds, controlled by a four-way solenoid valve and a solid-state timer. The process cycles every two minutes, alternating between drying and regenerating the desiccant beds to remove water vapor.
| Maximum operating pressure | 120 PSIG |
|---|---|
| Inlet air temperature limit | 100°F |
| Recommended inlet filter | 0.01 micron coalescing filter |
The total cycle time is 2 minutes, consisting of 60 seconds energized and 60 seconds de-energized.
A 0.01 micron coalescing filter must be installed before the dryer to remove particulates, liquid moisture, and oil.
Check for causes such as no power, high inlet temperature, excessive air flow, low inlet pressure, dirty filters, or a plugged purge orifice.