A313-01-880 Issue A
Page 34 © Edwards Limited 2008. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
Absorbed power is too high. Has debris or foreign material
entered the pump?
Strip down, clean and repair the
pump as necessary.
Is the inlet filter blocked? Clean or replace the filter.
Is the pump unsuitable for your
application?
If necessary, redesign your system to
comply with the capabilities of the
pump, or fit a different pump which
provides the necessary performance.
Is the motor or drive/transmission
system faulty?
Check that your motor or drive and
transmission system is operating
correctly, and that it is correctly
fitted to the pump: refer to the
Motor Manual supplied and to
Section 3.7.
The pump cannot reach its specified
ultimate vacuum pressure.
Is there a leak in the inlet pipeline? Check the inlet pipeline for any
valves open to atmosphere, or for
leaking connections.
Is the pump leaking? Check that all of the oil filler plugs
are fitted and are tight, and that the
inlet/outlet flange connections are
secure and do not leak.
Has the incorrect oil been used? Drain the pump and refill with the
correct oil: refer to Section 5.7.
Is the pump worn or damaged? Contact your supplier or Edwards for
advice.
- - If you have made the checks/actions
as described above and you still
cannot identify the cause of a fault,
or if you cannot rectify a fault,
contact your supplier or Edwards for
advice.
Table 12 - Fault finding (continued)
Symptom Check Actions
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