7 Servicing/Maintenance
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Vitacast / Vitacast Bloc
NOTE
After commissioning, increased temperatures may occur at grease-lubricated rolling
element bearings due to the running-in process. The final bearing temperature is
only reached after a certain period of operation (up to 48 hours depending on the
conditions).
7.2.2 Inspection work
DANGER
Excessive temperatures caused by friction, impact or frictional sparks
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷
Regularly check the cover plates, plastic components and other guards of
rotating parts for deformation and sufficient distance from rotating parts.
DANGER
Static charging due to insufficient potential equalisation
Explosion hazard!
▷
Make sure that the connection between pump and baseplate is electrically
conductive.
7.2.2.1 Checking the coupling
Check the flexible elements of the coupling. Replace the relevant parts in due time if
there is any sign of wear and check the alignment.
7.2.2.2 Checking the clearances
1. Remove pump casing 101.
2. Examine pump casing 101 and impeller vanes for signs of seizure or rubbing
contact.
3. Smoothen any signs of seizure or rubbing contact using a polishing cloth.
4. Remove any burrs from the impeller vane.
5. Re-adjust the axial clearance / distance between pump casing 101 and impeller
7.2.2.3 Cleaning filters
CAUTION
Insufficient inlet pressure due to clogged filter in the suction line
Damage to the pump!
▷
Monitor contamination of filter with suitable means (e.g. differential pressure
gauge).
▷
Clean filter at appropriate intervals.
7.2.2.4 Checking the flushing liquid
Periodically check the flushing liquid for contamination.
If necessary, drain the flushing liquid. Clean the flushing system and fill it with new
flushing liquid.
