KRAL C Series - Replacing the Mechanical Seal (Inner Bearing); Removing the Mechanical Seal

12 Servicing
12.4 Replacing the mechanical seal (inner bearing)
9 2 3
11
10
X
2. Ensure that the fixing screw11 of the pump-side coupling half10 is loosened.
3. Slide the pump-side coupling half onto the shaft until it stops and tighten the fixing screw.
4. Tighten the socket screws9 between the pump2 and pump bracket3 with torque.
5. Measure and write down the distanceX between the face of the coupling claws and the fitting
surface of the pump bracket.
1 2 73
6
5 84
6. Ensure that the fixing screw6 of the motor-side coupling half5 is loosened.
7. Slide the motor-side coupling half onto the shaft end of the motor7.
X-E
8. Check the distance between the face of the coupling teeth pump-side and the fitting surface of
the motor flange. The distance has to be adjusted to the measured valueX minus coupling dis-
tanceE, see table of limit values for aligning the shaft coupling Ä Connection,Page20.
9. Tighten the fixing screw on the motor-side coupling half and insert the coupling intermediate
ring4.
10. Secure the motor with eye bolts/hoisting equipment so that the motor can be pushed exactly hori-
zontally into the pump bracket and the coupling halves interlock.
11. Tighten the socket screws1 between the motor and pump bracket with torque.
12.4 Replacing the mechanical seal (inner bearing)
12.4.1 Removing the mechanical seal
Personnel qualification: o Fitter
Personal protective equipment: o Work clothing
o Protective gloves
o Safety boots
Aids: o Plastic hammer
o Extractor
Requirement:
ü Coupling removed
32
OIC 18en-GB Edition 2020-01
Operating instructions