Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 140

en-US
• Avoid flow in the pump during dismantling/installation work!
• Close the existing shut-off valves in front of and behind the pump!
• If no shut-off valves are fitted, drain the system!
Dismantling the motor
1. Remove sensor cable carefully from the electronic module.
2. Loosen motor fastening screws.
CAUTION
Property damage!
If the motor head is separated from the pump housing during maintenance or repair work:
‣ Insert the O-ring between the motor head and pump housing!
‣ Install the O-ring without torsion in the edge of the bearing plate facing toward the im-
peller!
‣ Make sure the O-ring has been installed correctly!
‣ Carry out a leak test at the highest permissible operating pressure!
Installing the motor
The motor is installed in reverse order of dismantling.
1. Tighten motor fastening screws diagonally. Observe the tightening torques! (Table, see the "Aligning
the motor head [" 25]" section).
2. Insert sensor cable into the electronic module interface.
NOTICE
If access to the screws on the motor flange is not guaranteed, the electronic module can be
separated from the motor (see "Aligning the motor head" [" 25] section).
In case of twin-head pumps, the twin-head pump cable, which connects the motors, must
be loosened or inserted.
For the commissioning of the pump, see "Commissioning" [" 46] section.
If only the electronic module has to be moved into another position, the motor need not be removed from
the pump housing completely. The motor can be rotated in the pump housing into the desired position (fol-
low permissible installation position). See the "Aligning the motor head" [" 25] chapter.
NOTICE
In general, turn the motor head before the system is filled.
Perform an impermeability test!
15.2.2 Dismantling/installing the electronic module
Take the "Shutdown" section into account before dismantling/installing the electronic module!
140 Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10