Vacuum Catalogue - Edwards

GXS industrial Dry Screw PumpDesigned for high reliability Edwards patented screw-rotor designdelivers excellent pumping speed and is part of an advanced thermalmanagement system that maximizes pump performance and life ofthe seals, bearings, and motor to ensure long pump service life.Adaptable to a wide range of applications GXS pumps are offeredwith a range of purge options, filters, catchpots, inlet isolation valvesand silencers; together with our special high flow purge and solventflush accessory enabling the inside of the pump to be kept cleanwithout disassembly.Long service intervals and easy swap-out Long-life non-oxidizinggearbox oil enables service intervals of up to 5 years to be achieved.Quick-connect utility interfaces provide for rapid pump installationand exchange to improve factory up-time.Low cost of ownership Custom high-efficiency motor and drivesystem with advanced seal technology provides for greatly reducedpower consumption. Minimal cooling water and purge gasrequirements coupled with improved powertrain technology providefor long service intervals and near maintenance-free operation.Minimum workplace and environmental impact GXS pumps areincredibly compact. Edwards advanced screw-rotor design providesfor remarkably quiet, low vibration operation even without a silencer.Simple to install and operate GXS pumps are easily wheeled or forkliftedinto position, coupled to the process and services using thesupplied mating connectors and run at the push of a button.Ideal for integration into larger systems GXS pumps andcombinations are supplied with serial (RS232) communication andLAN-based web-serving capability as standard. Optional modules areavailable to add Parallel (digital I/O) and Profibus control functionality.At your service Edwards has highly skilled applications specialistswho will advise on the optimum configuration for your process orapplication.GXS innovative technologyBearing and Lubrication• Oil lubricated gears eliminate grease and the need for periodicmaintenance.• Advanced quality bearings and special purpose oil is used, withlow vapour pressure for application compatibility and greatlyimproved life.Double ended shaft support• Non-cantilever design provides secure rotor support for extremelylow vibration and superior starting reliability, especially on harshprocesses.• In tests superior liquid and powder handling has demonstrated thata five litre water slug and one kilogram fine powder slug handlingcapability.Built in control panel• All pumps are fitted with a built-in control panel for direct localcontrol of the pump.• Full start / stop control with indication of running mode and state ofthe pump with a connector for an optional Pump Display Terminal(PDT) for improved diagnostic and configuration capability.Advanced shaft sealing technology• Non-contacting long-life seals with integral oil blocking labyrinthseal provides for highly effective sealing.• Combined with a four litre per minute seal purge the gearbox isprotected from contamination and the vacuum space is kept free ofoil.World leading motor and drive technology• Extremely high efficiency motors with electronic drives delivermaximum torque performance for difficult processes.• Hermetically sealed motor eliminates oil leaks and improves pumpreliability.• Water-cooled motors and drives provide for improved reliability andlong life to reduce service costs.Advanced pumping mechanism design• Enhanced screw-type rotor design results in smooth, gradualcompression along the length of the rotor for improved thermalcontrol and optimised pumping at all inlet pressures.• Integrated heat management and unique rotor and stator designfeatures provide argon gas pumping capability at full concentration.• Advanced machining techniques and design features eliminate theneed for rotor coatings while maintaining superb ultimate vacuumperformance.• Improved manufacturing technology and design contributes to lowvibration and extremely quiet running of