Wilo -Stratos GIGA2.0-I Einbau- Und Betriebsanleitung Seite 231

19.2.2 Replacing the motor/drive
Installation and operating instructions • Wilo-Stratos GIGA2.0-I, Wilo-Stratos GIGA2.0-D • Ed.02/2022-07
16. If the screws (Fig. I, Item 4) of the electronic module have been removed, screw in the
screws again. Clamp the holder (Fig. I, Item 13) of the differential pressure sensor under
one of the screw heads (Fig. I/III, Item 10 or Fig. II, Item 29) on the side opposite the
electronic module. Screw in the screws (Fig. I/III, Item 10 or Fig. III, Item 29) all the way.
17. Move the transport lugs (Fig. I, Item 30) displaced in step 7 in the section "Dismantling"
back from the motor housing to the motor flange.
NOTICE
Observe the commissioning measures (see section "Commissioning"
[} 162]).
18. Re-clamp the connection cable of the differential pressure sensor/mains cable.
19. Refit the upper part of the electronic module and tighten the screws.
20. Open the shut-off devices upstream and downstream of the pump.
21. 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. Carry out steps 1 ... 21 to dismantle the motor in accordance with section "Replacing
the mechanical seal".
2. Before installing the electronic module, pull the new O-ring (Fig. I, Item 31) between
the electronic module (Fig. I, Item 1) and the motor adapter (Fig. I, Item 11) onto the
contacting chamber.
3. Press the electronic module into the new motor contacting and fasten with screws
(Fig. I, Item 4).
NOTICE
The electronic module must be pressed on as far as possible when it is
installed.
en
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