Alfa Laval LeviMag, Instruction Manual, Page: 26 / 68

5 Maintenance
Assembly drawings with position numbers (#) can be found in section 10.3 Drive unit - WP50 and in section 10.4 Drive unit -
WP81. Tightening torques can be found in section 8.9 Tightening torque for screwed connections.
5.4 Disassembly of the drive unit
Step 1
Unscrew the four screws (8.3).
Remove the protection cap (8.2).
4307-0033
Step 2
Fasten the Drive Rotor with a hook wrench (A) and unscrew the
screw (10) and remove washer (9) and Fastening element (8.1) (B).
NOTE
The Drive Rotor (1) can be fastened for rotation using a hook
wrench that is inserted into the hole (Ø6 for Size WP50 and Ø7
for Size WP81) above the two screws (2).
4307-0034
A
B
Step 3
Pull out the shaft (6) - including keys (5) and (7) - and Drive Rotor
(1) with screws (2).
4307-0035
Step 4
Unscrew the screws (2) (A) and pull of the Drive Rotor (1) (B).
A
B
4307-0036
NOTE
Assemble reverse as dismantling.
Ensure clean surfaces during assembling and lubricate shaft fits (gear motor and Drive Rotor) with anti-corrosion grease.
Ensure magnetic drive rotor run-out is maximum 0.2 mm.
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