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STT40 / STT70
Functional description 6-17
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Figure 9: Functional diagram of STT40 / STT70
All functions are fully automatic.
The dryer is equipped with two drying cells. One drying cell is part of the drying cycle; the other
drying cell is regenerated simultaneously.
Part of the dehumidified air is used for regenerating the moist drying cell. At the beginning of
regeneration, it is heated by the regeneration heater. After the end of the heating period, the
drying cell is cooled off by using dehumidified air. After the switch-over time is reached, the
regenerated drying cell is included in the drying cycle, and the cycle starts again.
1 Drying cell
2 Regenerating heater
3 Drying hopper
4 Diaphragm
5 Return air filter
6 Blower
7 Valve
8 Drying heater
9 Suction box
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