Machine for the manufacture of containers, notably bottles, made of thermoplastic, comprising at least one moulding unit which comprises at least two mould holders mounted such that they can move between an open position and a closed position, and a mould comprising at least two moulding elements each fixed removably to an associated mould holder by fixing means, the said moulding unit comprising: - a moulding unit opening/closing device comprising a control member for moving the mould holders between the said open and closed positions; - a moulding unit locking device comprising a control member for controlling the locking means (58, 60) which are able to move between: • a locked position in which the mould holders of the moulding unit are kept in a closed position by the said locking means (58, 60), and • an unlocked position in which the mould holders are free to be parted from the closed position to the open position characterized in that the machine comprises a control module able to occupy at least: - a standby state associated with one mode of operation of the machine, known as the production mode, in which the machine manufactures containers, and - a state of use associated with another mode of operation of the machine, known as the intervention mode, in which at least the mould of the moulding unit can be changed, and able selectively to control the moulding unit locking device and opening/closing device according to the state occupied by the module, the said module comprising at least: - a first device intended selectively to actuate the moulding unit locking device and mounted able to move between: • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the state of use and in which the first device is able to collaborate with the locking device control member under the action of means causing relative movement between the module and the machine, - a second device intended selectively to actuate the moulding unit opening/closing device control member and which is mounted such that it can move between: • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the service state and in which the second device is able to collaborate with the opening/closing device control member under the action of means causing relative movement between the module and the machine, - and a chassis supporting said first and second devices (76, 78) of the module. - a moulding unit opening/closing device comprising a control member for moving the mould holders between the said open and closed positions; - a moulding unit locking device comprising a control member for controlling the locking means (58, 60) which are able to move between: • a locked position in which the mould holders of the moulding unit are kept in a closed position by the said locking means (58, 60), and • an unlocked position in which the mould holders are free to be parted from the closed position to the open position characterized in that the machine comprises a control module able to occupy at least: • a locked position in which the mould holders of the moulding unit are kept in a closed position by the said locking means (58, 60), and • an unlocked position in which the mould holders are free to be parted from the closed position to the open position characterized in that the machine comprises a control module able to occupy at least: - a standby state associated with one mode of operation of the machine, known as the production mode, in which the machine manufactures containers, and - a state of use associated with another mode of operation of the machine, known as the intervention mode, in which at least the mould of the moulding unit can be changed, and able selectively to control the moulding unit locking device and opening/closing device according to the state occupied by the module, the said module comprising at least: - a first device intended selectively to actuate the moulding unit locking device and mounted able to move between: • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the state of use and in which the first device is able to collaborate with the locking device control member under the action of means causing relative movement between the module and the machine, • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the state of use and in which the first device is able to collaborate with the locking device control member under the action of means causing relative movement between the module and the machine, - a second device intended selectively to actuate the moulding unit opening/closing device control member and which is mounted such that it can move between: • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the service state and in which the second device is able to collaborate with the opening/closing device control member under the action of means causing relative movement between the module and the machine, • a rest position occupied when the module is in the standby state, and • a work position occupied when the module is in the service state and in which the second device is able to collaborate with the opening/closing device control member under the action of means causing relative movement between the module and the machine, - and a chassis supporting said first and second devices (76, 78) of the module.