Main Dryer Components
Last updated
Dryer Operations
Last updated
The following rendered image shows an overall view of the dryer with some of the main components highlighted. The pages following will explain these components or assemblies more in depth as well as explain the function of any associated parts.
The Rotary Fill Switch is located in the wet hopper of the tower and on the opposite end of the fill tube, or on the end of a gravity fill hopper for profile dryers. It is powered by 24V. The switch is motorized and will rotate a paddle until wet grain comes in contact with the paddle. Once this happens, grain stops the rotation and proves the level of grain in the hopper.
The Plenum RTD (Resistance Temperature Device) is a temperature sensing device located in the plenum used to send a signal to the PLC to establish and maintain plenum temperature.
The two Mid-Grain RTD (Resistance Temperature Device) Assemblies are located around the perimeter of the dryer and are used to detect the temperature of the grain in the column. Each of these two RTD assemblies is equipped with a 4-20mA transmitter which provides an analog input signal sent to the PLC.
The Proximity Switch is used to detect the rotation of the discharge metering system for profile dryers and the sweep for tower dryers, by sensing the proximity of a detector on the discharge metering shaft for profile dryers and on the shaft of the sweep motor for tower dryers. If the rotation of the shaft goes undetected for a set duration of time, the machine will be shutdown.
The Control Power Transformer is used on profile dryers to transform a portion of the incoming electrical power to reliable 120V control power which is used to supply power to various electrical components including the PLC. These are only used on 575V dryers.
The infeed moisture sensor is mandatory for AccuDry grain dryers, and optional for TruDry grain dryers. This sensor monitors incoming grain in real-time so that the AccuDry prediction model can react to incoming grain moisture changes. On an optional TruDry grain dryer, this will only display on the main screen, and will not affect the operation of the grain dryer
