Replacing The Motor - Wilo Stratos GIGA Serie Instrucciones De Instalación Y Funcionamiento

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10.2.2 Replacing the motor

10.2.3 Replacing electronic module
10.2.4 Replacing the fan wheel
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• Carry out steps 1 to 19 to dismantle the motor in accordance with
chapter 10.2 "Maintenance work" on page 50.
• Remove the screws (Fig. 7, Item 21) and pull the electronic module
vertically upwards (Fig. 7).
• Before reinstalling the electronic module, pull the new O-ring
between the module (Fig. 7, Item 22) and the motor (Fig. 7, Item 4)
onto the contacting chamber.
• Press the electronic module into the contacting of the new motor and
fasten with screws (Fig. 7, Item 21).
• Carry out steps 20 to 40 to install the motor in accordance with chap-
ter 10.2 "Maintenance work" on page 50.
DANGER! Danger of death!
There is a mortal danger through shock when working on electrical
equipment. Following removal of the module, a potentially fatal
shock voltage may be present at the motor contacts.
• Check for absence of voltage and cover or cordon off adjacent
live parts.
NOTE:
Increased bearing noise and unusual vibrations are a sign of bearing
wear. Then the bearing has to be changed by Wilo customer service.
WARNING! Danger of personal injury!
Opening the motor leads to high, suddenly occurring magnetic
forces. These can cause 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 end plate for maintenance and repair work.
DANGER! Danger of death!
If the rotor is driven by the impeller when the pump is in standstill,
dangerous contact voltage can arise at the motor contacts.
• Close the shut-off device in front of and behind the pump.
• Carry out steps 1 to 7 to dismantle the electronic module in accor-
dance with chapter 10.2 "Maintenance work" on page 50.
• Remove the screws (Fig. 7, Item 21) and pull the module from the
motor.
• Replace the O-ring.
• Installation in reverse order.
NOTE:
The module has to be pressed on as far as possible when it is installed.
Carry out steps 1 to 7 to dismantle the fan wheel in accordance with
chapter 10.2 "Maintenance work" on page 50.
• Lever the fan wheel down from the motor shaft with a suitable tool.
• For the installation of the new fan wheel, pay attention to the correct
bearing of the tolerance ring in the hub groove.
WILO SE 01/2014