English
Installation and operating instructions Wilo-VeroLine IP-E, Wilo-VeroTwin DP-E
85
• Pull the spacing ring (Fig. 5, Item 1.22) off the shaft.
• Pull the mechanical seal (Fig. 5, Item 1.21) off the shaft.
• Push the counter ring of the mechanical seal out of seating in the
motor flange and the clean the seating surfaces.
• Clean the seating surfaces of the shaft carefully.
Installation:
• Insert the new counter ring.
• Push the new mechanical seal (Fig. 5, Item 1.21) onto the shaft.
• Push the spacing ring (Fig. 5, Item 1.22) onto the shaft.
• Mount the impeller (Fig. 5, Item 1.11) onto the shaft.
• Push the new circlip (Fig. 5, Item 1.12) onto the pump shaft. -
• Insert a new O-ring (Fig. 5, Item 1.13).
• Insert the motor with impeller and shaft seal into the pump housing
and fasten using the flange screws (Fig. 5, Item 4).
• Install the pressure measuring lines of the differential pressure sensor.
• Connect the power cable.
• Open the check valves in front of and behind the pump.
• Reset the fuse.
• Observe the measures for commissioning (Section 9 “Commission-
ing” on page 80).
NOTE:
Observe the specified screw tightening torque for the thread type.
Screw tightening torque
10.2.2 Changing the drive
Increased bearing noise and unusual vibrations are a sign of bearing
wear. The bearing or motor must then be replaced. The drive may only
be replaced by the Wilo customer service.
Screw connection
Tightening
torque
Nm ±10 %
Installation
instruction
Pump hous-
ing
—
Motor
M6
M10
10
35
Tighten evenly and
diagonally
Control ter-
minals
0.5
Power ter-
minals
0.5
Cable clips
0.5
Cover
0.8