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Troubleshooting
Model 3410 Installation, Operation, and Maintenance Manual
73
Symptom
Cause
Remedy
The element turns hard or
has a rub.
The shaft is bent.
Straighten the shaft or replace it if necessary.
The running clearances between the wear
rings are incorrect.
Check for the proper clearances. Replace the casing or
impeller wear rings if necessary.
There is excessive pipe strain on the pump
casing.
Relieve the strain and check the alignment. Consult ITT if
necessary.
There is excessive runout on the shaft or
impeller rings.
Inspect the rotating element and bearings. Replace worn
or damaged parts as necessary.
There is dirt in the casing ring or between
the impeller and casing wear rings.
Clean and inspect the wear rings. Replace worn or
damaged parts as necessary. Isolate and relieve the
source of dirt.
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