DANGER
Incorrectly serviced shaft seal
Explosion hazard!
Fire hazard!
Leakage of hot, toxic fluids!
Damage to the pump set!
▷ Regularly service the shaft seal.
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
Excessive fluid temperature
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. (⇨ Section 6.2 Page 43)
While the pump is in operation, observe and check the following:
▪ The pump must run quietly and free from vibrations at all times.
▪ In case of oil lubrication, ensure the oil level is correct. (⇨ Section 6.1.2 Page 38)
▪ Check the shaft seal. (⇨ Section 6.1.8 Page 41)
▪ Check the static seals for leakages.
▪ 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.
▪ Cooling system
Take the pump out of service at least once year to thoroughly clean the cooling
system.
▪ Monitor the stand-by pump.
To make sure that the 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 on the outside of the
bearing bracket).
7 Servicing/Maintenance
KWP
47 of 78