KRAL KV - Page 33

12 Servicing
12.4 Replacing the magnetic coupling
Notice The inner rotor can be mounted more easily if it is heated to 80°C.
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14
15
12
13
12
13
14
1. Carefully clean the contact surfaces of the inner rotor13, oil the tensioning element12 lightly.
2. Manually turn out the screws of the tensioning element by a few turns and insert the tensioning
element in the inner rotor.
3. Carefully clean the sealing surfaces.
4. Clean and lightly grease the O-ring15. Insert the O-ring and slide the distance sleeve14 onto the
pump shaft.
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5
2
12
13
14
5. Place the inner rotor with the premounted tensioning element onto the pump shaft and tighten the
screws of the tensioning element crosswise by hand.
6. Check the position of the tensioning element: The tensioning element has to lie flat on the dis-
tance sleeve and inner rotor. Otherwise loosen the screws and reposition the tensioning element.
7. When the position is correct, first tighten the screws of the tensioning element with half the torque
crosswise. Subsequently tighten several times crosswise with the full tightening torque Ä Ap-
pendix,Page58.
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10
3
9
8. Press the containment can11 onto the pump flange and tighten with socket screws10 using
torque.
9. Place the pump bracket3 on the pump and tighten the socket screws9 with torque.
Operating instructions
OIK 09en-GB Edition 2019-11
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