DeLUX DPX12T, Installation & Operation Manual

Page: 27 / 383

Page | 3 05/06/13
Initial Start-Up From Factory (Auto-Tuning)
***THIS PROCEDURE MUST BE DONE DURING INITIAL START-UP FROM FACTORY***
The temperature controller must be auto-tuned after shipping from the factory to the
customer. Not performing the auto-tune may result in the plenum temperature becoming
unstable during operation. To perform the auto-tune, follow the steps below:
1) Must have power & fuel to the dryer.
2) The dryer must be full of grain.
3) Adjust the target plenum temperature on the controller to 180
°F (60 °C).
4) Turn main panel power “ON”.
5) Hold momentary fan switch “ON” until all fans have started.
6) Turn burner switch to “ON”
7)
To start the auto-tuning process, press the advance (green) key 4 (four) times to reach
the following screen:
8) Use the UP or DOWN key to change the upper display to “
yes
”
.
Press the RESET key to
return to the main screen. The controller will begin to flash “
attn
” in the lower display
and “
tun1
” in the upper display, indicating that the auto-tuning is in progress.
9) The temperature will cycle both above and below the temperature setpoint (180
°F)
to
check the responsiveness of the system. This process may last several minutes. Once the
controller has stopped flashing “
attn
” in the lower display and “
tun1
” in the upper
display the auto-tuning process is complete (Note: It is important that the controller is
not disturbed until the process is complete) . The temperature should increase slowly up
to the setpoint (180
°F)
and become stable (as long as the temperature seems stable,
you may now adjust the set point to the desired drying temperature).
10) At this time the modulating motor (located on the valve train to the left of the panel
box) should be moving in small increments, advancing slowly to the target plenum
temperature.
11) Give the system ample time to zero in on the desired plenum temperature (minimum of
20 minutes).
12) It may be necessary to repeat the process with changing variables outside the system,
but not needed every time starting the dryer.