KRAL KV - Removing the Inner Rotor; Installing the Inner Rotor

12 Servicing
12.4 Replacing the magnetic coupling
5. Lift the motor off the pump bracket.
6. Depending on the motor size remove the threaded pin6 or the countersunk screw4.
7. Pull the outer rotor support5 and outer rotor7 off from the motor shaft using mounting levers.
8. Remove the socket screws8 between the outer rotor support and the outer rotor.
12.4.2 Removing the inner rotor
Personnel qualification: o Fitter
Personal protective equipment: o Work clothing
o Protective gloves
o Safety boots
Aids: o Hexagon key
o Anti-rotation screw
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.
Notice The containment can be dismantled more easily if it is heated to 80°C.
3
9
1
13
12
10
11
1
M
1. Remove the socket screws9 between the pump1 and pump bracket3 and remove the pump
bracket.
2. Remove the socket screws10 between the containment can11 and the pump and remove the
containment can.
3. To replace the inner rotor13, screw two screwsM into the empty threaded holes of the tension-
ing element12 as anti-rotation screws.
4. Remove the screws of the tensioning element.
5. Turn the screws back into the existing threaded holes.
ð This loosens the tensioning element from the inner rotor and from the pump shaft.
12.4.3 Installing the inner rotor
Personnel qualification: o Fitter
Personal protective
equipment:
o Work clothing
o Protective gloves
o Safety boots
Aids: o Oil without molybdenum sulphide additive (e.g. multifunction spray WD-40)
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.
32
OIK 09en-GB Edition 2019-11
Operating instructions