SCREW COMPRESSORS designed for non-stop operation SCREW COMPRESSORS Electronic controller The user-friendly interface safely manages all functions of the device via a microprocessor, from safety alarm control (oil temperature, electric motor, electric cooling fan control, maintenance time) to command systems (start-stop, alarm reset). Access to all controller parameters is password protected (only available to authorised personnel). Speed control with frequency converter High performance electric motors (option) Compact screw block integrated in one system Inverter technology is a characteristic feature of VS series screw compressors. The compressor has a built-in electric motor, PREMIUM EFFICIENCY IE3, which ensures compliance with the minimum performance requirements (MEPS) set by the EU. The state-of-the-art pumping system with an integrated unit ensures extremely reduced overall dimensions, combining the following components: The speed control system of the electric motor and screw element follows the changing needs of compressed air production. Therefore, it achieves the best optimization of energy consumed from the electrical network in proportion to the production of compressed air required by the system. This first-class performance ensures energy savings over time and the best reliability of the certified product. - screw block with oil injection - minimum pressure valve - thermostatic valve - suction valve - separator vessel Exceptional compactness Reduced external dimensions High ecological sustainability Low noise level Easy and affordable maintenance Low operating costs Longer product life cycle Sound insulation Heat exchanger for air/oil Drive system The SD VS series has a built-in suction pre-filter, which provides maximum protection of internal components by filtering the entire amount of air supplied to the compressor. The use of insulated panels with a closed cell structure, care in assembling components, and the absence of transmitted vibrations results in such a low noise level that you can install our compressor in any work environment. Its design with a large heat transfer surface allows the maintenance of low airflows even in high ambient temperatures. The heat exchanger is made of aluminum alloy with highly efficient pipe parts. Compressors with a direct drive in a ratio of 1:1. This means that the screw element and the motor, which are directly connected via a clutch, rotate at the same speed. This not only reduces energy consumption and maintenance needs, but also reduces noise levels. The use of highly efficient motors *provides savings compared to the performance of conventional compressors. An electric fan with a high flow rate, almost noise-free, directs the entire amount of air to just one point and maintains proper thermal balance for all internal components. * In combination with a direct drive. 950471 - 13/5/2022

PRINCIPLE OF OPERATION oil removed from the air by the separator filter (11) flows through the oil return pipe from the separator to the screw compressor. The amount of oil can be monitored through the sight glass. • In the initial start-up phase, the electric motor (14) (with “star” power supply) rotates slowly. The solenoid valve is not powered, and therefore the suction valve (3) remains closed. For VS models, during the initial start-up phase, the electric motor accelerates to reach the appropriate speed. The solenoid valve is powered and the suction valve (3) is open, enabling the passage...