7 Servicing/Maintenance
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Vitacast / Vitacast Bloc
DANGER
Excessive temperatures as a result of bearings running hot or defective bearing
seals
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷
Regularly check the rolling element bearings for running noises.
CAUTION
Increased wear due to dry running
Damage to the pump set!
▷
Never operate the pump set without liquid fill.
▷
Never close the shut-off element in the suction line and/or supply line during
pump operation.
CAUTION
Impermissibly high temperature of fluid handled
Damage to the pump!
▷
Prolonged operation against a closed shut-off element is not permitted
(heating up of the fluid).
▷
Observe the temperature limits in the data sheet and in the section on
operating limits. (
While the system is in operation, observe or check the following:
▪
The pump must run quietly and free from vibrations at all times.
▪
Check the shaft seal. (
▪
In case of oil lubrication, ensure the oil level is correct. (
▪
Check the static sealing elements for leakage.
▪
Check the rolling element bearings for running noises.
Vibrations, noise and an increase in current input occurring during unchanged
operating conditions indicate wear.
▪
Monitor the correct functioning of any auxiliary connections.
▪
Monitor the stand-by pump.
To make sure that stand-by pumps are ready for operation, start them up once a
week.
▪
Monitor the bearing temperature.
– The bearing temperature must not exceed 90 °C (measured at the motor
housing).
– The bearing temperature must not exceed 100 °C (measured in the oil sump).
CAUTION
Operation outside the permissible bearing temperature
Damage to the pump!
▷
The bearing temperature of the pump (set) must never exceed 90 °C (measured
on the outside of the motor housing).