The working chamber with one entrance has a closed space where the shot blasting process takes place. The chamber is dismountable and consists of columns, beams, panels, cross stays, inner wall protection. The outside surface of the chamber and of the roof has a galvanized sheet coating.  The product is transported into the chamber through a double-wing door which is opened pneumatically.
The door closing is controlled by limit switches mounted on pneumocylinders. There is a observation window in one of the wings to follow the operator’s state in the chamber.
There is a door at the chamber side wall to enter the chamber. The door closing is controlled by a limit switch. To do the shot blasting convenient the chamber has 2 jack-lifts and a stationary gallery. The carriages move along the chamber on guides at the chamber wall sides. Inside  the chamber  there are lamps with polycarbonate light diffusers. Since the chamber stands over the pit, the door is covered with a grate. Through this grate the shots fall and the operator can go on it. The system of shot circulation is intended to collect shots thrown by the blaster, to separate it and to return it to the blaster.
The system of shot circulation consists of belt conveyors, an elevator and a separator. The belt conveyors transport the shot and dust mixture on the spiral conveyor and include driving, tension and intermediate sections as wee a belt.
 The bucket belt elevator with centrifugal discharge is intended to transport the shot and dust mixture In the separator vertically. Used shots fall through chamber hopper into the elevator. The elevator is situated a little bit lower the zero point. The elevators transport the shots transport the shots upwards from the chamber base into the separator. The elevator belt is activated by a motor mouted on the elevator top. At the elevator the buckets are fixed which transport the abrasive material upwards from the chamber base into the separator. The separator separates the shots from dust and other restrictions. The separator type is pneumo-mechanical. The separator has channels to feed the cleaned shots to the blasters and one channel to bring shot excess from the separator hopper to the elevator. The separator is equipped with a choke to regulate air.
Air cleansing system
The ventilation system consists of a filter unit, radial airways, an operating floor and sucks off dusty air out of the chamber, cleans it and discharges into the air.
The jack-lifts elevate and carry one worker with tools providing safety and convenient working conditions.
Electrical control unit consists of a metal cabinet which includes the entire electrical equipment needed for work and safety of the chamber in accordance to valid regulations, The electrical equipment is intended for control of mechanisms and assurance of safety interlock to provide work and maintenance.
The control system is based on universal logical LOGO modules produced by Siemens. It is distinguished by high reliability and low costs, compact dimensions, simple programming, installation and operation.