The assembly has a powerful yet low-noise internal gear pump that is powered by an electric motor. The pump can fill a 5 l diaphragm accumulator in storage charge mode. The control operates as a function of pressure and, as required by EN 12514, has low oil and line break safety trips. The built-in non-return valve secures the intake line against unwanted pressure rises and prevents backflow of the operating medium. An integrated oil catch pan with leak monitoring offers additional security. The system has a suction filter already integrated, as well as a status display that visually represents the operating status. An easily removable dust cover protects the device from dust and moisture. The suction and pressure connection is designed for 10 x 1 mm copper pipes. The device is supplied with mounting material and a mains plug.