KRAL KV - 12 Servicing; 11.5 Maintaining the magnetic coupling; 12.1 Dangers during servicing

12 Servicing
11.5 Maintaining the magnetic coupling
1. Check the pump visually and acoustically every four weeks.
2. If there are signs of wear, eliminate the cause Ä Servicing,Page29.
11.5 Maintaining the magnetic coupling
Personnel qualification: o Fitter
DANGER
Magnetic field.
Risk of death for persons with cardiac pacemaker, metallic implant or neurostimulator.
► Under no circumstances may persons with cardiac pacemakers, metallic implant or
neurostimulator perform work on the pump/pump unit.
6
3*
5
4
2*
1
Check the tightening torques of the following parts of the magnetic coupling once a year. Repla-
cing the magnetic coupling Ä Servicing,Page29. Tightening torques Ä Appendix,Page58.
Item No. Part
1 Tensioning element
2* Threaded pin outer rotor support
3* Countersunk screw outer rotor support
4 Socket screws pump bracket– pump
5 Socket screws outer rotor support– outer rotor
6 Socket screws containment can– pump
* Depending on motor size
Tab.10: Magnetic coupling: Parts to be maintained
12 Servicing
12.1 Dangers during servicing
The following safety instructions must be observed strictly:
o Have all work carried out only by authorized qualified personnel.
o Before beginning work on the pump ensure that the electrical power supply is deenergized and is
secured against being switched back on.
o Before beginning work, let the pump unit cool down slowly to the ambient temperature. Avoid
rapid temperature changes.
o Pumped liquids can be hot, poisonous, combustible and caustic. Use corresponding protective
equipment.
o Ensure that the pump is depressurized and that shut-off devices are not operated uncontrolled.
o Collect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
o Ensure that the collection tank for discharging pumped liquids is sufficiently large.
o Observe the tightening torques Ä Appendix,Page58.
o Observe the operating instructions and data sheets of the components.
Operating instructions
OIK 09en-GB Edition 2019-11
29