Edwards EXT Series - Page 4

B753-03-880 Issue F
Page ii © Edwards Limited 2008. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
6 Storage and disposal ........................................................................... 31
6.1 Storage ...................................................................................................................31
6.2 Disposal ...................................................................................................................31
7 Service, spares and accessories .............................................................. 33
7.1 Introduction .............................................................................................................33
7.2 Service ....................................................................................................................33
7.3 Spares .....................................................................................................................33
7.3.1 ISX inlet-screen .........................................................................................................33
7.3.2 Inlet-strainer (EXT255Hi pump only) .................................................................................33
7.3.3 Interstage-port seal (EXT255HVi pump only) .......................................................................34
7.3.4 WCX water-cooler ......................................................................................................34
7.3.5 Inlet-flange seals ........................................................................................................34
7.4 Accessories ...............................................................................................................34
7.4.1 Installation ...............................................................................................................34
7.4.2 EXC controller ...........................................................................................................34
7.4.3 Pump-to-controller cable ..............................................................................................34
7.4.4 EXDC drive modules ....................................................................................................35
7.4.5 BX bakeout band ........................................................................................................35
7.4.6 FL20K foreline trap .....................................................................................................35
7.4.7 TAV vent-valve and vent-port adaptor ..............................................................................37
7.4.8 ACX air-cooler ...........................................................................................................37
7.4.9 Vibration isolators ......................................................................................................37
7.4.10 PRX purge-restrictor ....................................................................................................37
7.4.11 VRX vent-restrictor .....................................................................................................37
For return of equipment, complete the HS Forms at the end of this manual.
Illustrations
Figure Page
1 Cross-section view of EXT255H pump ................................................................................. 4
2 Cross-section view of EXT255HVi pump .............................................................................. 5
3 Maximum allowed rise in backing pressure against time for controlled venting:
system pressure (mbar/Pa) against time (s) ......................................................................... 9
4 EXT255H/EXT255Hi dimensions (mm) ...............................................................................12
5 EXT255HVi dimensions (mm) ..........................................................................................13
6 Typical pumping system with an EXT255H pump ..................................................................16
7 Typical pumping system with an EXT255Hi/EXT255HVi pump ...................................................17
8 Correct installation of the inlet-screen ............................................................................18
9 Installation of optional accessories (and spares): EXT255Hi shown .............................................36
Tables
Table Page
1 Technical data ........................................................................................................... 9
2 Checklist of items .......................................................................................................15
3 Vent-restrictor orifice diameter (with atmospheric pressure at the inlet of the vent-valve) ..............20
4 Fault finding .............................................................................................................28