Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service page 120

English
10.2.3 Replacing the electronic module
120
NOTICE:
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 motor/drive can be replaced without any risk.
• Carry out steps 1 to 10 to dismantle the motor/drive in accordance
with chapter 10.2 "Maintenance tasks" on page 117.
NOTICE:
To dismantle and assemble the electronic module, observe the
enclosed instructions on the spare part.
• When installing the motor, follow steps 25 and 31 in chapter 10.2
"Maintenance tasks" on page 117.
NOTICE:
Observe the specified screw tightening torque appropriate for the
thread type (see Table 10 "Screw tightening torques" on page 119).
NOTICE:
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.
DANGER! Risk of fatal injury!
There is a risk of fatal injury from electric shock when working
on electrical devices. Following removal of the electronic module,
a potentially fatal shock voltage may be present at the motor
contacts.
• Ensure system is voltage-free, cover or screen off adjacent live
parts.
DANGER! Risk of fatal injury!
If the rotor is driven by the impeller when the pump is at a stand-
still, dangerous contact voltage can arise at the motor contacts.
• Close the shut-off devices upstream and downstream of the pump.
• Separate the motor shaft from the coupling unit by loosening the
coupling screws.
NOTICE:
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 danger.
• Carry out steps 1 to 6 and 8 to 9 to remove the electronic module in
accordance with chapter 10.2 "Maintenance tasks" on page 117.
NOTICE:
To dismantle and assemble the electronic module, observe the
enclosed instructions on the spare part.
• Proceed further (restore pump to operational standby) as described
in chapter 10.2 "Maintenance tasks" on page 117 in reverse order
(steps 9 to 1).
WILO SE 04/2020