Specifications

Portable Drying/Conveying Systems Chapter 4: Operation 28 of 76
NOTE: At this display, before you change any of the settings, you need to test the
thermocouple readings in Ice water (32°F at sea level, and boiling water 212°F at sea
level). Then you may change these settings accordingly to make sure the controller is
displaying the correct temperature.
Setting Values
By pressing and holding the numbers in the LOW TEMP ALARM or the HIGH TEMP
ALARM buttons, the following screen will be displayed:
Enter the values you would like to set in the screen by pressing the number keys. Press ENT
(Enter) when you are finished to set the new values or CLR (Clear) to erase the current
values and reenter new ones. To set the values in the next field, press ENT (Enter) to close
the screen shown above. Then select the next number field to enter new values.
When these settings have been made, the operator now has a choice of returning to the
DRYER MENU, or BACK (takes you back to the DRYER SETUP 2 of 3).
Over-Drying Protection
The PROCESS RETURN AIR TEMPERATURE displays the air temperature as it leaves
the drying hopper. If this temperature is above 150°F, an aftercooler is required.
By pressing the DISABLE or ENABLE the operator disable or enable this feature of the
dryer.
This feature is used to prevent the over drying of the plastic resin in the drying hopper.
At this point the operator has the choice of pressing MAIN MENU, DRYER MENU, or
MORE to access the screen 2 of 2 of the OVERDY PROTECTION for adjusting values.
SET BACK VALUES;
The SETPOINT is the secondary drying temperature set point. This is the temperature at
which the drying temperature will be reduced to after a certain delay time and when the
return air temperature has exceeded its set point..