A419-00-880 Issue F
Page 58 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
6.5 Service the EPX pump
The service interval for the EPX series of dry pumps is shown in Table 16. Major service is outside the scope of this
manual and must be carried out by qualified Edwards Service personnel: contact your supplier or Edwards to arrange
a major service.
For removal of the pump for maintenance refer to Section 7.
Table 16 - Maintenance plan
Operation Frequency
Refer to
Section
Inspect the pipelines and connections Annually or as part of a preventative maintenance
schedule
6.3
Cleaning the pump Annually or as part of a preventative maintenance
schedule
6.4
Service the EPX L/LE pump
Service the EPX N/NE pump
Service the EPX TWIN pump (all
variants)
Pump service requirements are largely determined by
the pump’s operating environment and application.
Service intervals range from 2 to 5 years
*
. Please
contact your local Edwards service representative for
further advice on a suitable maintenance schedule.
*
Main factors that will affect the service intervals of the EPX pump are:
z The ambient temperature in which the pump runs - Higher ambient temperatures will result in shorter
service intervals (refer to Ta b l e 6 for the ambient operating temperature range)
z The temperature and flow rate of the cooling water delivered to the pump - higher water temperatures and
a lower flow rates will result in shorter service intervals (refer to Ta b le 9 for cooling water supply details)
z Rapidity of cycling - rapid cycling applications will result in shorter service intervals
z Application - processes that require a Nitrogen purge (EPX N-series pumps) will typically result in shorter
service intervals
6.5
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