In the hot summer, it is actually more prone to heat dissipation from the main engine. The outside temperature is high and the temperature difference is small. Therefore, the heat generated during the operation of main engine cannot be diffused in time. The increase in temperature will affect the operation of brewer's grain spent dryer and reduce the work. The efficiency is also the friction inside the mainframe, the friction is hot, so we have to arrange the work time reasonably, avoid the overload operation to increase the heat production, and the regular maintenance and repair, add grease, reduce wear, This not only reduces the frequency of heat dissipation problems on the main unit, but also ensures efficient operation of brewer's grain spent dryer.