Motor; 9.1.1 Changing The Motor; Tightening Torque; Installation Instructions - Wilo VeroLine-IPL Serie Einbau- Und Betriebsanleitung

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9.1

Motor

9.1.1 Changing the motor

Dismantling
Installation
Screw tightening torques
Screw connection
Impeller — shaft
Pump housing — motor
flange
9.2

Mechanical seal

36
• When performing installation and maintenance work, protect the
pump components against falling.
• Never stand underneath a suspended load.
DANGER! Risk of burns or freezing to the pump when body parts
come into contact with the pump!
Depending on the pump or system operating conditions (fluid tem-
perature), the entire pump can become very hot or very cold.
• Keep a safe distance during operation!
• In the case of high water temperatures and system pressures, allow
the pump to cool down before all work.
• Always wear protective clothing, protective gloves and protective
goggles when working.
Increased bearing noises and unusual vibrations indicate bearing
wear. The bearing or motor must then be changed.
Changing the motor, see fig. 1/2.
• Disconnect the system from the power and secure it against being
switched on.
• Close the check valves in front of and behind the pump.
• Depressurise the pump by opening the vent plug (item 2.1)
WARNING! Danger due to extremely hot or extremely cold pressu-
rised fluid!
Depending on the temperature of the fluid and the system pres-
sure, when the venting screw is opened completely, extremely hot
or extremely cold fluid in liquid or vapour form may escape or shoot
out at high pressure.
• Always exercise caution when opening the venting screw.
• Disconnect the motor connection cables.
• Loosen the motor fastening screws (item 4) on the motor flange and
lift the motor with the impeller and shaft seal from the pump using
suitable hoisting gear.
NOTE
When tightening screw connections in conjunction with the work
described in the following: Observe the screw tightening torque for
the thread type (see section "Screw tightening torques" on page 36).
• Slowly insert the motor with impeller and shaft seal into the pump
housing using suitable hoisting gear and screw it into place.
• Connect the motor cable.

Tightening torque

Nm ± 10 %
M10 30
M12 60
M16 100
There may be a slight amount of drip leakage during the running-in
period. However, a weekly visual inspection is required. If there is
clearly detectable leakage, the seal is to be changed. Wilo offers a
repair kit which contains the necessary parts for replacement.

Installation instructions

Tighten evenly and diagonally
WILO SE 11/2017