Wilo VeroLine-IPL Serie Notice De Montage Et Mise En Service page 16

English
shaft seal off pumphousing by means of suitable
lifting gear.
• Unscrew the impeller fixing-nut (pos. 1.11) toge-
ther with the plain washer (pos. 1.12) and pull off
the impeller (pos. 1.13) from the pumpshaft.
• Remove mechanical seal (pos. 1.21) from shaft.
• Carefully clean fitting/seat area of shaft.
• Remove the stationary ring of the mechanical seal
with seal collar from its seat in the lantern flange,
remove the o-ring (pos. 1.14) and clean the seat
areas.
• Press the new stationary ring of the mechanical
seal with seal collar on its seat in the lantern
flange. Use ordinary liquid soap for lubrication.
• Insert new o-ring into the groove on its seat of the
lantern.
• Push new mechanical seal up to the end of the
conical seat right onto shaft. Use ordinary liquid
soap for lubrication.
• Refit impeller with plain washer and nut, fix by the
outer impellerdiameter. Handle carefully to save
the mechanical seal.
Observe screw tightening torque regula-
ATTENTION!
tions (see 7.3).
• Remount the motor with impeller and shaft seal by
means of suitable lifting gear and secure the
motorflange connection with bolts.
Observe screw tightening torque regula-
ATTENTION!
tions (see 7.3).
• Rewire power leads to motor terminals.
7.2 Motor
Increasing bearing noise and undue vibrations
indicate a worn bearing. The bearing or the com-
plete motor then needs replacing.
14
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ATTENTION!
Screw Connection
Impeller -
Shaft
Pump
Housing
Motor-
flange
Exchange of the motor (Fig. 4, 5):
• Switch off power supply and secure against unau-
thorized switching.
• Close isolating valves at both pump ports.
•
• Lower the pressure of the pump by opening the air
vent plug (pos. 2.1).
Beware of scalding!
In the event of hot liquids.
• Disconnect wires from motor terminals
• Unscrew the motor fixing-screws (pos. 4) at
motorflange and lift the motor with impeller and
shaft seal off pumphousing by means of suitable
lifting gear.
Observe screw tightening torque regula-
tions (see 7.3).
• Rewire power leads to motor terminals.
7.3 Screw tightening torque
Tightening
Torque
±
Nm 10%
M 10 30
M12 60
M16 100
-
Mounting
Instructions
tighten the
screws
equally
crosswise
Wilo AG 10/2005