B722-20-880 Issue D
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
WCX water-cooler
A water-cooler can be fitted to the EXT pump. Please refer to
to check the suitability of water cooling for
a particular application. Pumps with a Conflat flange are supplied with a water-cooler.
7.3.4
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.
shows how the accessories are fitted to an EXT pump.
7.4.2
EXDC drive modules
There are two EXDC drive modules, the EXDC80 24 V and the EXDC160 24 V. The EXDC80 24V drive should be used in
conjunction with the EXT70H/Hi 24 V pumps - an EXDC160 should not be used with this family of pumps. It is
recommended that the EXT255H/Hi 24 V pumps are driven by the EXDC160 24 V module. However an EXDC80 24 V
may be used, although this will result in significantly extended ramp times and reduced performance.
7.4.3
BX bakeout band
A BX bakeout band accelerates the degassing of the pump to enable it to achieve lower pressures. It may also be used
to protect the pump from condensation of contaminants. The bakeout bands are available in 110-120 V or 220-240 V
versions.
Water-cooler
Item Number
WCX500
B736-01-036
Inlet-flange
Inlet-seal
Item Number
DN63ISO-K
ISO63 trapped ‘O’ ring (fluoroelastomer)
B271-58-17F
DN40NW
DN40NW Co-Seal (fluoroelastomer)
B271-58-453
DN100ISO-K
ISO100 trapped ‘O’ ring, fluoroelastomer
B271-58-171
DN63CF
63CF copper compression gasket (pack of 5)
C081-00-003
DN100CF
100CF copper compression gasket (pack of 5)
C082-00-003
Drive Module
Item Number
EXDC80 24 V
D396-45-000
EXDC160 24 V
D396-46-000
Pump
Bakeout band
Item Number
EXT70H/Hi 24 V
BX70 (110 V)
B580-52-040
BX70 (240 V)
B580-52-060
EXT255H/Hi 24 V
BX250 (110 V)
B580-52-041
BX250 (240 V)
B580-52-061
