Abstract: The disclosure relates to a paint supply system for a coating installation (e.g. painting installation) comprising a ring line for circulation of a coating agent, a ring line tapping point in the ring line for extraction of the coating agent from the ring line, a consumer and a tap line leading from the ring line tapping point to the consumer. The disclosure provides a device for alternately moving the coating agent forward and backward in the tap line to avoid settling of the coating agent in the tap line.

Abstract: The disclosure relates to an atomizer for the application of a multi-component paint, with a master paint connection, a hardener connection, a mixer, a hardener line leading in the atomizer from the hardener connection to the mixer, a master paint line, which in the atomizer leads from the master paint connection to the mixer, and with a main valve for controlling the paint delivery, the main valve being arranged downstream of the mixer and controlling the flow of the multicomponent paint to an application element, in particular to a rotatable bell cup. The atomizer according to the disclosure is characterized by a first return connection for returning the multicomponent paint from the atomizer to a return system. For this purpose, the atomizer has a first return line which branches off in the atomizer between the mixer and the main valve and opens into the first return connection.

Abstract: The circuit arrangement includes a transformer having a primary side included in at least one phase conductor of a polyphase supply for the load. A control circuit is connected to the secondary side of the transformer and includes a threshold circuit receiving a control signal from the transformer, a memory circuit receiving a threshold signal from the threshold circuit, a bistable switch connected to the threshold circuit and the memory circuit and switched, by the threshold signal, to a position preventing the stored signal from being passed on from said memory circuit, and a controlled electronic switch inserted in the phase conductor and controlled and opened by the stored signal. A resetting switch is operable to reset the control circuit to the initial state, and a delay device may be interposed between the memory circuit and the controlled electronic switch to delay opening of the latter until after a subsequent operation of the repetition-blocking device.