After commissioning, when it is ensured, that the pump is installed stress free and running without cavitation, the vibrations
should be measured and recor
ded. Excessive vibrations will reduce the life span of the bearings. An increase in vibrations may
indicate that the bearings should be replaced.
Bearing temperatures depend on several factors incl. the temperature of the surroundings. Consequently it is not possible to
state an absolute temperature. If however an increase in temperature above that of normal recorded takes place, it may be an
indication that the bearings should be replaced. Temperatures above 100°C will significantly reduce the life span of the grease.
Please notice that some motor bearings are permanently greased whilst others need regular relubrication. Please always refer to
the manual for specific information on bearing types and required maintenance.
The above guidelines may not apply in all working conditions. Please contact Alfa Laval for information relating to specific
applications.
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