A371-32-880 Issue C
Page 28 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Service, spares and accessories
7.4.2 Inlet dust filter
*
The inlet dust filter protects the pump against abrasive dust.
7.4.3 Inlet desiccant trap
*
Use a desiccant trap when you pump limited quantities of water vapour at high pumping speeds to a low vapour
pressure.
7.4.4 Inlet chemical trap
*
The inlet chemical trap protects the pump against chemically active gases.
7.4.5 Solenoid operated gas-ballast control valve
The valve provides remote or automatic on/off control of gas-ballast. The valve can be connected to shut-off ballast
to prevent the return of air to the vacuum system when the pump is switched off.
7.4.6 Foreline trap
*
Use a Foreline trap on a clean pumping system to prevent back-migration of rotary pump oil vapour into your vacuum
system.
7.4.7 Solenoid operated pipeline valve
*
Fit the pipeline valve between your vacuum system and the pump inlet to provide additional system protection when
the pump is switched off.
Product Item Number
ITF20K Inlet dust filter A442-15-000
Product Item Number
ITD20K Inlet desiccant trap A445-10-000
Product Item Number
ITC20K Inlet chemical trap A444-10-000
Product Electrical supply Item Number
EBV20 gas-ballast control valve 220/240 V, single-phase, 50/60Hz A500-06-930
100/120 V, single-phase, 50/60Hz A500-06-984
Product Item Number
FL20K Foreline trap A133-05-000
Product Electrical supply Item Number
PV10EK valve 200/240 V, single-phase, 50/60Hz C411-01-000
110/127 V, single-phase, 50/60Hz C411-03-000
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