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Large Dehumidifying Dryers Controls 40
OVERDRY PROTECTION
(Overdry Protection Screen - 1 of 2)
This feature is used to prevent the overdrying of the plastic resin in the drying hopper.
RETURN TEMP provides the actual temperature of the process air leaving the drying
hopper.
Press the MORE button located in the top right corner of the Over-Dry Protection screen.
By pressing the MATERIAL OVER-DRY OPTION button, the operator can enable or
disable this feature.
(Overdry Protection Screen - 2 of 2)
The SET BACK SETPOINT is the lower process air temperature that will keep the
material ready for processing but not damage it over an extended period of time.
The SET BACK DELAY button prevents the control from going to the SET BACK
SETPOINT until the subject time period has elapsed.
When the return air temperature reading is above the SET BACK TEMPERATURE
the SET BACK SETPOINT is used on the process air setpoint.
When the return air temperature reading is below the SETUP TEMPERATURE, the
process air setpoint returns to normal.