The jamb cleaner cleans carbon and foreign materials from the oven jamb.

The steps the machine goes through to clean the jamb are as follows. First, a hydraulic cylinder raises and extends a cleaning head to a horizontal position. When the head extends about two inches, a high pressure solenoid de-energizes, causing the head to move slowly. At this point, the carriage travels up at high speed. The head continues to extend until it presses against the jamb(with low pressure). At about 8 inches before the upper limit, the carriage slows down to avoid damage. At the upper limit, the carriage reverses and cleans at high speed down the jamb. The carriage slows down when it is about 8 inches from the lower limit. When it starts slowing down for the lower limit, an air blast begins to clean the hearth plate. The carriage stops at the lower limit and waits for the air blow to stop. Then the carriage starts up in high speed, going to the home position. About 16 inches before the home position, it slows down. As the carriage approaches home position, the cleaning head retracts