User manual FLUKE VACUUM PUMP DOWNSTREAM INTERCONNECT KIT FOR MOLBLOC-S INSTALLATION

[. . . ] Installation and Use of Vacuum Pump Downstream Interconnect Kit for molbloc-S® P/N 401882 Installation Instructions The use of a vacuum pump, connected downstream of the molbloc-S®, increases the usable flow range of each element. The purpose of this kit is to provide the plumbing components required for the typical installation of the molbloc-S system with the medium flow vacuum pump, part number 401940 and 401883. [. . . ] This kit includes 2 conical reducers with the ISO-KF Style Vacuum Flange ends. When connecting a single molbloc-S to the vacuum pump, use both the 40 mm x 25 mm, and the 25 mm x 16 mm conical reducers. When utilizing the downstream tee assembly (DHI P\N 401884) only the 40 mm x 25 mm conical reducer is required. For the sake of flexibility this interconnection kit includes a coil of 1 1/2 in. This hose can be cut to the precise length required in each application. Hose barb fittings slip inside the hose and are secured by worm drive clamps. stainless steel flanges. These mating flange surfaces compress a Viton® O-ring that is held in place by the centering ring. The overpressure ring keeps the O-ring in place, and maintains a leak free connection when the system is subjected to internal pressures above vacuum level. This connection is reusable, rotatable, and can operate leak free in vacuum applications up to -8 10 Torr. When an overpressure ring is used, KF25 or smaller flange connections can operate leak free to positive pressure beyond 600 kPa (87 psia) VACUUM SHUT-OFF VALVE The vacuum shut-off valve is provided so that the operator can continue to run the vacuum pump while changing the Device Under Test (DUT) or the molbloc-S between calibration runs. It is not recommended to start and stop the pump more than a few times per day. Therefore continue to run the pump with the gas ballast valve open and the vacuum shut-off valve closed. [. . . ] The seal is effected by the uniform application of pressure by the clamp on the 15° surface of the mating molbloc-S and molbox are trademarks, registered and otherwise, of DH Instruments, Inc. Document 560052 021119 DH Instruments, Inc. 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA Tel 602. 431. 9100 Fax 602. 431. 9559 dhi@dhinstruments. com www. dhinstruments. com [. . . ]