Wilo Yonos GIGA2.0-I Einbau- Und Betriebsanleitung Seite 211

18.2.2 Replacing the motor/drive
Installation and operating instructions • Wilo-Yonos GIGA2.0-I/-D • Ed.01/2023-03
26. Clamp the holder (Fig. I, Item 13) of the differential pressure sensor under one of the
screw heads (Fig. I, Item 29 or Fig. II, Item 10) on the side opposite the electronic mod-
ule. Finally, tighten the screws (Fig. I, Item 29 or Fig. II, Item 10).
NOTICE
Observe the commissioning measures (see section "Commissioning"
[" 150]).
27. Re-clamp the connection cable of the differential pressure sensor/mains cable.
28. Open the shut-off devices upstream and downstream of the pump.
29. Reset the fuse.
Increased bearing noises and unusual vibrations indicate bearing wear. The bearings or mo-
tor must then be replaced. The drive may only be replaced by the Wilo customer service!
DANGER
Risk of fatal electrical shock! Generator or turbine operation
during pump flow!
Even without the electronic module (without electrical connection),
there may be dangerous contact voltage at the motor contacts!
• Check for absence of voltage and cover or cordon off adjacent live
parts!
• Close the shut-off devices upstream and downstream of the pump!
WARNING
Personal injury due to strong magnetic forces!
Opening the motor leads to high, abruptly occurring magnetic forces.
This can lead to serious cuts, crushing injuries and bruises.
• Do not open the motor!
• Only allow Wilo customer service to dismantle and install the motor
flange and the bearing plate for maintenance and repair work!
NOTICE
The magnets inside the motor do not pose a risk to persons with pace-
makers provided that the motor is not opened and the rotor is not dis-
mantled. The motor/drive can be replaced without any risk.
1. To dismantle the motor, carry out steps 1 ... 8 according to section "Replacing the
mechanical seal" [" 207].
2. Remove the screws (Fig. I, Item 4) and pull the electronic module vertically upwards
(Fig. I, Item 1).
⇒ Version DN 32 ... DN 80, Fig. I
3. Remove the motor/drive with impeller and shaft seal from the pump housing by
loosening the flange screws (Fig. I, Item 29).
4. Removing the screws (Fig. I, Item 29) also detaches the differential pressure sensor
from the motor flange. Suspend the differential pressure sensor (Fig. I, Item 8) with the
holder (Fig. I, Item 13) from the pressure measuring lines (Fig. I, Item 7).
⇒ Version DN 100 ... DN 125, to 4.0 kW, Fig. II
5. To dismantle the motor, carry out steps 20 ... 30 according to "Changing the mechan-
ical seal" [" 207] section.
⇒ Version DN 100 ... DN 125, 5.5 kW ... 7.5 kW, Fig. III
6. To dismantle the motor, carry out steps 31 ... 34 according to "Changing the mechan-
ical seal" [" 207] section.
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