Chapter 4: Control Panels
• The Dry Timer sets the amount of time the burner operates during a drying cycle. The setting is
based on the moisture content of the grain being dried. Refer to TopDry Terminal Drying Capacities,
page 24.
• The Unload Timer sets the amount of time the dump chutes are open during a dump cycle. This set-
ting is based on the size of the TopDry. Initial settings are given in Initial Dryer Start-Up, page 58.
• The Batch Cool Timer can be used if the dryer is being operated in autobatch mode, and cool grain
is desired during the autobatch dump cycle. It is also available when Dry and Hold Mode is on.
• The Purge Timer is the amount of time the fan(s) must operate before the burner will light on initial
startup. For domestic dryers, this timer will always be set to 30 seconds.
• The Cool Down Timer allows grain to cool for the pre-set time if an error condition occurs. Error
conditions that apply are:
• The Out-of-Grain Timer is activated when the chamber high level switch no longer senses grain,
signaling that the fill system needs to refill the dryer. If the Out-of-Grain Timer goes to 0 before the
dryer has refilled, the dryer will shut down with an out-of-grain warning.
To change the setting on any timer:
1. Click the Timers icon shown on the main menu.
The Timers and Delays window will be displayed, providing access to all of the timer settings.
2. Click the dark blue (upper portion) of the button to launch the keypad.
NOTE: The light blue portion on any of the buttons displays the time remaining on that timer. If the
dryer is momentarily stopped for any reason, the timers will stop, but will continue counting
down when the dryer is restarted.
3. Enter the desired time using the keypad and click the “Enter” key (lower right hand button) which will
enter the new value into the TopDry Terminal memory.
4. Click Exit to return to the main menu.
Setting the Delays
By clicking the Timers icon on the main menu, you can set the time for the Fan Off Delay, Fan Start
Delay, Wet Supply Switch Delay, Low Level Switch Delay, High Level Switch Delay, Load 1 Delay, and
Load 2 Delay.
What You Should Know
The delays perform the following functions:
• The Fan Off Delay sets the amount of time the fan(s) and burner(s) shut off during a dump cycle.
Shutting off the fan(s) during a dump cycle prevents the drying floor from becoming excessively dirty
when there is a large amount of foreign material in the grain being dried. Setting the Fan Off Delay
time higher than the Unload Time will allow the dust and fines to settle before the fans turn on.
• The Fan Start Delay sets the delay between the start of multiple fans in a two fan TopDry, thus
reducing the starting electrical current. This delay has to be set short enough (usually 3 seconds or
less) to prevent the second fan from rotating and starting in a reverse rotation.
• The Wet Supply Switch Delay sets the amount of time the optional wet supply grain level switch
can be uncovered before the dryer will shut down. If this optional switch is not used, the delay
should be set to 0.
42 Pneg–4900 TopDry Terminal™
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