Operating instructions B-Series
Version 2.4, En Page 60 of 81 21-10-2005
Malfunction Cause Possible solution
To much wear of
packing
Purge line is blocked Clean purge line
The shafts are not precisely in line Align unit
The shaft is buckled Replace shaft
The bearings are worn Replace bearings
The shaft or bush is worn and/or the
bearing surfaces of the mechanical shaft
seal are damaged, or the elastomers are
not resistant to the liquid
Completely replace mechanical shaft seal
and check that the elastomers are resistant
to the liquid
The packing is not properly fitted Assemble properly and replace any
damaged packing
The shaft runs eccentrically with worn
bearings or poor alignment
Replace and align bearings
The turning parts are out of balance
(vibrating)
Find imbalance and remedy
An incorrect type of packing has been
used
Replace packing and check which
elastomers are resistant to the specific
liquid
Malfunction Cause Possible solution
Bearings
wearing too
quickly
The shafts are not precisely in line Align unit
The shaft is buckled Replace shaft
Turning parts run against stationary parts Adjust and align as necessary
The shaft runs eccentrically with worn
bearings or poor alignment
Replace and align bearings
The turning parts are out of balance
(vibrating)
Find imbalance and remedy
Ineffective lubrication or insufficient
lubricant in the bearing housings,
possibly as a result of a leak; noticeable
at increased temperature
Follow service plan
Insufficient lubrication Follow service plan
The bearings are soiled Replace bearings, prevent dirt penetration
Rust formation in the bearings due to
penetrated moisture
Replace bearings, prevent pump coming
into contact and with moisture with large
temperature differences.
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