GRAIN DRYER & PARTS BOOK - Opico

Detailed Controller Operation
Assumptions - In this section it is assumed that the controller and the associated dryer are in good
working condition. The exception will be certain "error" conditions that may reasonably be expected to occur,
such as failure to fill because the grain source has been exhausted. See Section 6 for a discussion of controller
operation when failures occur.
Controller Options - The controller options which are available to the operator are shown in Figure 4A.
Figure 4A - RAB Keypad input options and their effects.
Drying Operation - While filling the grain bin may be commenced by the operator before drying parameters
are set, some of the options available to the operator when the unit is in the Idle state are not available
once the Fill state has been activated. The following discussion assumes all options are to be maintained, so
filling will not be commenced until other drying conditions have been established.
Initial Dryer Setup - The following steps will begin grain drying.
Turn the Unit On - After the dryer has been completely setup mechanically and electrically, including
providing a supply of wet grain and fuel, depress and release the ON key. The display will change from being
blank to
Hours xxxxx
where xxxxx will be a number between 000 and 25599. The number displayed will be the number of hours that
the controller has been in the operating state.
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