A708-01-880 Issue E
Page 70 © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
The gearbox/end cover 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/end cover oil before
restarting the pump (refer to
Section 5.8.1).
Have the seals in the pump failed? The seals must be replaced. Contact
the supplier or Edwards for advice.
The gearbox/end cover is noisy. Is the oil level low? Check the oil level and fill as
necessary (refer to Section 5.3.1).
The pump does not operate. Has the pump seized due to deposits
in the pump?
Flush the pump with cleaning
solution (refer to Section 5.9). If the
pump cannot be cleaned of deposits,
contact the supplier or Edwards.
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).
Tab le 1 6 - Fa u l t f in d in g ( co nt in u ed )
Symptom Check Action
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