Edwards nEXT240 User Manual

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Contents
B800-00-880 Issue A
Contents
Section Page
1 Introduction ....................................................................................... 1
1.1 Scope and definitions ................................................................................................... 1
1.2 General description ..................................................................................................... 2
1.3 Pump controller .......................................................................................................... 3
1.4 Operational features .................................................................................................... 3
1.4.1 Power limit setting ...................................................................................................... 3
1.4.2 Standby speed ............................................................................................................ 3
1.4.3 Timer ...................................................................................................................... 4
1.4.4 Analogue output ......................................................................................................... 4
1.4.5 Automatic vent options ................................................................................................. 4
1.4.6 Normal speed setting .................................................................................................... 5
1.5 Logic interface ........................................................................................................... 5
1.5.1 Parallel control and monitoring ....................................................................................... 5
1.5.2 Serial control and monitoring .......................................................................................... 5
1.5.3 Serial control with parallel monitoring ............................................................................... 6
1.5.4 Parallel control with serial monitoring or serial configuration ................................................... 6
1.5.5 Controller configuration (serial set-up) .............................................................................. 6
2 Technical data .................................................................................... 7
2.1 General ................................................................................................................... 7
2.2 Pumping media ........................................................................................................... 7
2.3 Vent gas specification and vent control data ......................................................................17
2.4 Purge gas specification ................................................................................................18
2.5 Cooling water ............................................................................................................18
2.6 Materials exposed to gases pumped .................................................................................18
2.7 Electrical data ...........................................................................................................19
2.8 Logic interface connector .............................................................................................19
2.9 Controller connector socket ..........................................................................................20
2.10 Indicator LEDs ...........................................................................................................23
2.11 Operating and storage environment .................................................................................23
3 Installation ....................................................................................... 25
3.1 Unpack and inspect .....................................................................................................25
3.2 Typical installation .....................................................................................................25
3.3 Connection to the vacuum system ...................................................................................26
3.3.1 Inlet-screen (supplied fitted on CF only) ............................................................................27
3.3.2 Mechanical fixing .......................................................................................................27
3.3.3 Inlet-connection and orientation .....................................................................................27
3.3.4 Base mounting ...........................................................................................................28
3.3.5 Backing connection .....................................................................................................28
3.3.6 Interstage connection (variants only) ...............................................................................29
3.4 Purge gas connection ...................................................................................................29
3.4.1 Connect the purge gas .................................................................................................29
3.4.2 Recommended purge gas flow ........................................................................................29
3.5 Electrical installation ..................................................................................................29
3.5.1 Introduction .............................................................................................................29
3.5.2 Earth (ground) connections ...........................................................................................29
3.5.3 Connect the logic interface to the TIC ..............................................................................29
3.5.4 Connect the logic interface to your control equipment ..........................................................30
3.5.5 Connect the electrical supply .........................................................................................30
3.6 Connection for parallel control and monitoring ...................................................................31
3.7 Connection for serial control and monitoring ......................................................................32
IA/030/03/09

Edwards nEXT240 Specifications

General

Brand	Edwards
Model	nEXT240
Category	Water Pump
Language	English