Leroy-Somer — Accessing the revolving field coil and stator
Repair & overhaul · Rotor and stator
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- Take care not to knock the windings when refitting the rotor in the stator.
Procedure
- Follow the procedure for dismantling the bearings.
- Remove the coupling discs (single-bearing) or the DE bracket (two-bearing) and insert a tube of corresponding diameter on the shaft end.
- Rest the rotor on one of its poles, then slide it out; use the tube as a lever arm.
- After extracting the rotor, be careful not to damage the fan and place the revolving field on special V-shaped supports.
- If intervention is required on the revolving field coil, the rotor assembly must be rebalanced.
- Reassemble by following the dismantling procedure in reverse order.
- If the fan is replaced, respect the assembly guide; use a tube and a screw.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Leroy-Somer service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.