A705-61-880 Issue M
Page 44 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
The gearbox and oil are
contaminated with the process
substances pumped.
Has the shaft-seal purge failed ? Check the pressure of the air or
nitrogen purge flow to the shaft-
seals; if necessary adjust the air or
nitrogen pressure. Change the
gearbox oil before you restart the
pump (refer to Section 5.7).
Have the seals in the pump failed ? The seals must be replaced. Contact
your supplier or Edwards for advice.
The gearbox is noisy. Is the oil level low ? Check the oil level and fill as
necessary (refer to Section 5.3).
The pump does not operate. Is the pump-motor faulty ? Make all the other appropriate
checks in this table. If there is no
other apparent cause for failure of
the pump to operate, check the
pump-motor and if necessary replace
it (refer to Section 5.11).
- - If you cannot rectify a problem, or if
you cannot identify the cause of a
problem, contact your supplier or
Edwards for advice.
Table 16 - Fault finding (continued)
Symptom Check Actions
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