Wilo Atmos GIGA-N Mode D'emploi page 70

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9.5.2 Dismantling the bearing bracket
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Maintenance/repair
9.1 10
Fig. 22: Housing cover, mechanical seal
1. Remove the spacer (9.2).
2. Remove the rotating part of the mechanical seal (9.1).
3. Loosen the interior hexagonal head screws (15) and remove the housing cover (10).
4. Remove the stationary part of the mechanical seal (9.1).
4.5 4.3 4.2 4.4 5
Fig. 23: Bearing bracket
4.1A
Fig. 24: Shaft
1. Remove the key (3.3).
2. Pull off the thrower (4.5) and V-gaskets (4.3).
3. Remove the bearing cover (4.2) and retaining ring (4.4).
4. Loosen the hexagon head screw (8.2), remove the lock washer (8.3) and remove
the pump support foot (8.1).
5. Completely remove the shaft (3.1) from the bearing bracket (5).
6. Remove the roller bearings (4.1A) and (4.1B) from the shaft (3.1).
Neck rings
The pump is optionally equipped with exchangeable neck rings. During operation, the
gap backlash increases due to wear. The period of use of the rings depends on the op-
erating conditions. If the volume flow decreases and the motor shows signs of in-
creased current consumption, this could be caused by an impermissibly high gap back-
lash. In this case, replace the neck rings.
8.1 8.3 8.2
3.1
4.4 4.2 4.3 3.3
4.1B
WILO SE 2019-04