Disclosed herein is an apparatus for manufacturing a polycrystalline silicon ingot for solar batteries having a door control device using a hinge. Slowing the processor clock provides significant savings in power usage. The outersole is designed to surround the periphery of the binding base and cover the area of attachment between the binding base and the binding upper. Once the leak reaches a predetermined level, the sealing ball is pressed against the sealing element by the force of the gas in the chamber. A non-coherent integral channel is formed from the received radiation. When the oxides occluded in an upstream or downstream NOx catalyst are reduced, the surrounding atmosphere of each NOx catalyst is changed between a reducing atmosphere and an oxidative atmosphere.