1. Introduction and machine description This tractor-operated mobile dryer dries paddy, wheat, maize, soybean, pulses and seeds in 3,000 kg batches, using diesel-fired hot air. Its rated moisture window is 40% down to 14%. This manual covers operation, maintenance, service and spare parts. Read Section 3 (Safety) before first use. 1.1 How the machine works 1. Grain enters the bottom hopper and the bucket elevator lifts it into the drying column. A flexible screw conveyor is an optional extra for loading. Loading takes about 25-30 minutes. 2. A diesel burner heats the air. A digital PLC controller shows the hot air temperature (up to 100 °C) and holds the set point. 3. The blower forces the hot air through the grain. A rotor inside the column keeps the grain moving so the whole batch dries evenly. 4. Exhaust air passes through the cyclone dust collector silo on the chassis, which separates chaff, dust and ash from the air stream. 5. When the grain reaches target moisture, the burner is switched off. The blower and rotor keep running to cool the grain. 6. The dried grain is unloaded through the elevator in about 15-20 minutes. 1.2 Power The dryer is driven from a tractor PTO shaft (minimum 39 HP tractor) through belt drives and chain-andsprocket transmissions. An electric option is also listed: about 25 kW, three-phase, 440 V, 50 Hz.