Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service page 122

English
10.2.3 Replacing the electronic module
10.2.4 Replacing the fan wheel
116
• Before reinstalling the electronic module, pull the new O-ring
between the electronic 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).
NOTE:
The electronic module has to be pressed on as far as possible when it
is installed.
• Carry out steps 20 to 40 to install the drive in accordance with chapter
10.2 "Maintenance work" on page 111.
DANGER! Risk of fatal injury!
There is a risk of fatal injury from electric shock when working on
electrical equipment. Following removal of the electronic 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.
• Close the shut-off device upstream and downstream of the pump.
NOTE:
Increased bearing noises and unusual vibrations indicate bearing
wear. Then the bearing has to be changed by Wilo customer service.
WARNING! Risk of 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 bearing plate for maintenance and repair work.
NOTE:
The magnets inside the motor pose no risk to persons with pacemak-
ers provided that the motor is not opened and the rotor is not
removed. The electronic module can be replaced without any risk.
DANGER! Risk of fatal injury!
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 upstream and downstream of the pump.
• Carry out steps 1 to 7 to dismantle the electronic module in accord-
ance with chapter 10.2 "Maintenance work" on page 111.
• Remove the screws (Fig. 7, Item 21) and pull the electronic module
from the motor.
• Replace the O-ring.
• Proceed further (restore pump to operational standby) as described in
chapter 10.2 "Maintenance work" on page 111 in reverse order
(steps 5 to 1).
NOTE:
The electronic module has to be pressed on as far as possible when it
is installed.
NOTE:
Observe the measures for commissioning (chapter 9 "Commission-
ing" on page 106).
Carry out steps 1 to 7 to dismantle the fan wheel in accordance with
chapter 10.2 "Maintenance work" on page 111.
• 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.
• The fan wheel has to be pressed on as far as possible when it is
installed. Only press here in the area of the hub.
WILO SE 10/2017