6.4 Dismounting and changing burner motor
Cut off electricity from the burner and ensure that the motor has no
voltage.
Fan cross section
A416L ver. 3
1 Motor
2 Fan wheel
3 Fixing sleeve
4 Wedge
5 Fixing screw of fan wheel
6 Base bushing
7 Fixing screw of mounting flange
If necessary, lift the fan motor with a lifting device or strap.
To dismount motor and fan wheel:
1. Switch off the burner from the mains.
2. Disconnect the electrical cable of the motor.
3. If in use, detach the rotation speed sensor from the motor’s fan casing.
4. Screw off screws in the motor mounting flange and lift the motor away.
5. Screw off the fan wheel fixing screw and fixing sleeve.
6. Pull out the fan wheel from motor shaft using an extractor.
7. Loosen the wedge and base bushing.
To mount motor and fan wheel:
1. Place base bushing.
2. Set the wedge into the shaft slot.
3. Pull the fan wheel to its place using a binder plug. The fan wheel lies against base
bushing.
4. Place the fixing sleeve.
5. Screw down the fan wheel with a fixing screw to the motor shaft.
M4248 2316EN
99 (114)
