Used LEYBOLD HERAEUS WA 250 #9105220 for sale

LEYBOLD HERAEUS WA 250 is a rotary vane mechanical pump designed for use in high- and ultra-high vacuum applications. This type of pump is the preferred choice for many scientific and industrial processes because it provides a more reliable and efficient vacuum than other types of pumps. WA 250 features a standard speed of 825 RPM and a maximum capacity of 250 m3/h. Its motor is powered by a 3-phase, 400/690-V electrical cable. The motor is protected from overloads by a thermistor over-temperature protection and is equipped with a thermal motor protection switch. Additionally, this model features a pulse sensor to monitor the insulation and Hall Effect Transistor (HEMT) sensors to monitor the motor temperature. LEYBOLD HERAEUS WA 250 is built on a single-body heavy steel frame, designed to reduce vibration and ensure smooth operation. The pump features two bearings, encased in oil, to provide optimal support during operation. This model also comes with an isolated oblong oil chamber to reduce lubricating temperatures and avoid the accumulation of lubrication residues. Furthermore, this model has a built-in filter to remove oil mist and protect the motor's bearings. The pump also includes a double-layer carbon fiber rotors, which provide an unsurpassed compression ratio to handle moderate vapors. WA 250 offers a wide range of inlet and outlet connections, making it suitable for almost any installation. It can be connected to a variety of systems, including chamber systems, diffusion pumps, turbomolecular pumps, and ion pumps, thanks to its inlet valve connection, outlet flange, and outlet fitting. Moreover, the inlet valve connection can be upgraded with an isolation valve if needed. In terms of maintenance, LEYBOLD HERAEUS WA 250 requires only two different greases to lubricate its components. Its carbon fiber rotors need to be inspected and changed every 5,000 operating hours or at least once a year. The pump should also be cleaned regularly with a special cleaning solution to ensure optimal performance. Furthermore, it is recommended to carry out an annual function test and service interval to address any issues that may arise before problems occur. All in all, this pump provides a reliable and efficient vacuum for a wide range of industrial and scientific processes.