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STT40 / STT70
Functional description 6-20
6.2.1. Hopper Heater
Each drying hopper has its own heater. The temperature of the dehumidified air is adjusted by
means of the temperature controller. The setting range is from +140°- +356°F (+60 - +180 °C).
The current temperature can be read off the digital display (= actual value). If you are drying at a
process temperature above 250°F you must use a return air cooler.
) The temperature controller is factory-programmed. Nevertheless,
you have to set specific values which are dependent on the
processed material.
Increasing setpoint value
Reducing setpoint value
“EXIT” key.
Aborting the input
Process display
drying temperature
“PGM” key. Selecting
operating level or
parameter selection
Setpoint display
drying temperature
Figure 12: Temperature
controller