B753-03-880 Issue F
Page 34 © Edwards Limited 2008. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Service, spares and accessories
7.3.3 Interstage-port seal (EXT255HVi pump only)
The EXT255HVi pump is supplied with a fluoroelastomer 'O' ring seal for the interstage-port. The Item Number of a
replacement interstage-port seal is given below.
7.3.4 WCX water-cooler
A water-cooler can be fitted to the EXT pump. Please refer to Section 3 to check the suitability of water cooling for
a particular application. Pumps with a Conflat flange are supplied with a water-cooler.
7.3.5 Inlet-flange seals
EXT pumps are supplied with an inlet seal. The Item Numbers of replacement seals are given below.
7.4 Accessories
7.4.1 Installation
The accessories available for use with the EXT turbomolecular pumps are described in the following Sections. Figure 9
shows how the accessories are fitted to an EXT pump.
7.4.2 EXC controller
The Edwards EXC Controllers provide the facilities necessary for operating a pumping system based on an EXT255H,
EXT255Hi or EXT255HVi pump. The Item Numbers of the EXC Controllers are given below.
7.4.3 Pump-to-controller cable
You must fit a pump-to-controller cable between an EXC Controller and the EXT pump. A cable is not supplied with
the EXT Pump or the EXC Controller (except EXC100L). The following cables are available:
Interstage-port size Item Number
DN40NW C105-16-395
Water-cooler Item Number
WCX500 B580-61-001
Inlet-flange Inlet seal Item Number
DN100ISO-K ISO100 trapped 'O' ring, fluoroelastomer B271-58-171
DN100CF Copper compression gasket (pack of 5) C082-00-008
Controller Voltage Item Number
EXC100E 90 - 264 V a.c. D396-20-000
EXC100L 90 - 264 V a.c. D396-22-000
EXC120 90 - 264 V a.c. D396-16-000
EXC300 90 - 132/180 - 264 V a.c. D396-14-000
Cable Length Item Number
Pump-to-controller 1 m D396-18-010
Pump-to-controller 3 m D396-18-030
Pump-to-controller 5 m D396-18-050
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